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Патент USA US3037556

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June 5, 1962
s. F. GARDNER
_
3,037,546
PRESS
Filed March 8. 1960
4 Sheets-Sheet 1
INVENTOR.
?iewar iEGardnen
WI
Gig/‘,5.
June 5, 1962
3,037,546
S. F. GARDNER
PRESS
Filed March 8. 1960
4. Sheets-Sheet 2
f3
f7
INVEN TOR.
15>
Stewart Gardner
BY
.
Ma [wan/‘2&3
June 5, 1962
s. F. GARDNER
_
3,037,546
PRESS
Filed March 8. 1960
4 Sheets-Sheet 3
A)
a
.
‘
43
-
‘
JNVENTOR.
SZ’ézuarfGardnev;
BY
/
United States Patent 0 'ice
3,037,546
Patented‘ June '5,‘ 1962
2
3,037,546
PRESS ‘
Stewart F. Gardner, % The Stewart Coach
Industries, Inc, Bristol, Ind.
Filed Mar. 8, 1960, Ser. No. 13,498
20 Claims. {CL 153-2)
The present invention relates to a sheet metal forming
press, and more particularly to such a press for forming
both. inner and outer panels for doors.‘
In the manufacture of doors,‘ such as doors for mobile
homes, formed of inner and outer panels ?anged and
43
tions of a ‘metal sheet into either upstandingi?anges or
rebent' ?anges, the die part including die members se
lectively securable in one or the other of said die parts
to provide for the formation of either an upstanding flange
or rebent ?anges thereby.
Another object is the provision of a sheet metal form
ing press having'complementary relatively movable die
structures‘ including shearing die block means for cutting
corner portions from a sheet or panel which employ
alternate sets of such means for cutting either triangular
or square corner portions from the panel; and also the
optional provisionv of shear blocks employable in either
set of die block means by selective securement of such
connected along their edges to provide a hollow shell
blocks in either of two positions thereof.
which may have thermal insulation or the like applied
A further object of the invention is the‘provis‘ion of
therein, and‘ with openings cut in the panels for insertion
complementary shearing die elements in cooperating rela
of windows and of latches .or locks, it has heretofore
tively movable die parts for cutting portions from a panel
been a relatively slow, expensive, and tedious operation
to‘ provide openings therein, in which at least certain of
to perform the various steps necessary for so forming the
the shearing elements are formed with curved cutting
panels. The press of the present invention reduces to one
simple operation the several separate steps previously re 20 edges to facilitate the cutting of the apertures by effecting
a progressive shear.
quired, and by reason of the resulting simpli?cation re
It is another object to provide readily reversible means
duces the time, labor, and costs involved to a minimum. To
for effecting relatively reverse formation of panels in rela
this end, the ?xed and movable parts of the press are pro
tively movable complementary die means.
vided with complementary die structures which in one
It is also an object of the invention to provide a sheet
operation‘ of the press perform all of the bending and 25
metal forming press including novel ejector means for
cutting necessary to form the panel as desired. In addi
facilitating removal of the formed panel from the press.
tion, the press incorporates in its die parts elements or
Other and further objects, advantages, and features of
members ‘selectively and alternatively attachable in dif
the invention will be apparent to‘ those skilled in the art
ferent' positions so as to bend the inner and outer panels
of the different respective forms thereof. Similarly, the 30 from the following detailed description, taken in con
junction with the accompanying drawings, in which:
two panels have corner portions of different shapes cut
FIG. 1 is a front elevational view of a press according
therefrom. The cutting of the several corner portions
to the invention, in its open or loading position;
is accomplished by cooperating shearing die blocks re
FIG. 2 is a fragmentary View similar to FIG. 1, but
movably secured on the press bed and platen as portions
showing the press in'its closed or forming position;
of the complementary die parts, the blocks being readily
FIG. 3 is a horizontal sectional view taken substantially
removed and replaced when the press is to operate upon
as indicated by the line 3-3 of FIG. 1, showing the
an inner or outer panel after having been used to form
movable platen of the press in plan;
the other panel. The arrangement is such as to permit
FIG. 4 is a perspective view showing the two panels
the use of at least one of the ‘shearing die blocks in a
prior to assembly;
plurality of positions so as to cooperate in the cutting
FIG. 5 is an enlarged fragmentary detail view in
off of either square or triangular corner portions, if de
perspective of one corner-cutting die construction of the
sired.
press in the open position thereof;
In the cutting of apertures, such as a window aper
FIG. 6 is a view of the construction of FIG. 5 in the
ture, or a door lock aperture, in a panel,'cooperable
shearingdie elements are provided on the bed and platen 45 forming position of the press;
FIG. 7 is an enlarged plan view of the platen-mounted
for preferably simultaneous cutting of all sides of the
portion of another corner-cutting die structure;
aperture. To facilitate the ‘shearing or cutting action,
FIG. 8 is an enlarged perspective view of; another
and reduce the power required to cut the desired portions
corner-cutting die construction of the press in the open
from the panel‘ or sheet, at least certain of the shearing
position thereof;
die elements have cutting edges formed with a slight curve
FIG. 9 is an enlarged cross-sectional view taken ‘sub
so that the movement of the cooperating shear elements
stantially as indicated by the line 9——9 of FIG. 3, showing
toward each other with the sheet therebetween results in a
the upper and lower die parts in the open oridle position;
progressive cutting or shearing of the panel from the point
FIG. 10 is a view similar to FIG. 9, but showing the.
or points at which the curved cutting edges ?rst contact
parts in the closed or completed forming position;
the sheet. In this connection, at least certain of the aper
FIG. 11 is a view similar to FIG.*10, but showing the
tures must be cut in opposite portions of the two panels
parts in a different arrangement to impart ‘a different
as they are respectively and similarly positioned in the
form to the panel; and
,
press, since in assembly one of the panels must be re
FIG. 12 is a fragmentary perspective view of shearing
versed from its forming position in order .to engage prop
erly with the other, and registration of corresponding
die means of the press for cutting an opening in the
apertures would‘ not occur if the apertures were not cut as
panel.
explained. The invention‘ providesieasily transposable
cutting means to allow the relative reversal of location of
the openings.
It is accordingly an object of the invention to provide
a sheet metal forming press for forming different shapes
of panels assemblable to-provide a hollow door construc
tion in which either panel may be formed with equal
facility, and which is adaptable with a minimum ex
penditure of effort and time to form either type of panel. 70
Another object is the provision of a panel-forming press
having complementary ‘die parts for bending edge por
_
Referring ?rst to FIG. 4, there are shown an inner
panel I and an'outer panel 0 which'may be assembled
and secured together to form a door. The panel 0 has
upstanding ?anges formed along the four edges thereof,’
all of substantially the same height. The ?ange H along
one longitudinal edge of the panel which is to correspond
to' the hinge edge of the ?nished door has its ends’
substantially squared or perpendicular to the bend line
of the ?ange, and the adjacent ends of the ?anges F on
the transverse edges of the panel are similarly formed.
These ends of the transverse ?anges F are disposed sub
3,037,546
3
4
stantially in the plane of the inner face of the ?ange H,
while the ends of the ?ange H are spaced inwardly rela
such as spot welding, may be employed to further secure
tive to the bend line of the transverse ?anges by sub
stantially the height of the ?anges. This relationship of
the panels together. It will be evident that the out
turned portions B of the inner panel, with the enveloping
edge portions of the panel 0, provide a ?ange about three
edges of the door, on which suitable weather stripping or
the ?anges and ends at the corners of the panel between
which the ?ange H extends is effected by cutting from
these corners of the sheet S rectangular corner portions
each having an extent longitudinally of the sheet or panel
substantially twice the ?ange height, and a transverse
extent substantially equal to the height of the ?anges. 10
At their other ends, the transverse ?anges F are inclined
panels, which may be backed by a wooden or like secur
or angled, at substantially 45°, to the intersection of
the bend lines of the transverse ?anges with the bend line
ing to the invention, generally rectangular in plan and
other gasket means may be mounted to assure weather
tightness.
The overlapping ?anges H in each of the
ing strip, provide for the hinged mounting of the door
and may also carry gasket or weather strip means.
Referring now to FIG. 1, there is shown a press accord
comprising a supporting framework formed in any suit
able manner. The framework is shown as having a lower
of the ?ange F formed on the other longitudinal edge
of the panel, the ends of the longitudinal ?ange F simi
supporting portion including corner uprights 20 and hori
larly being angled from the edge thereof to the junctions
of the bend lines of the adjacent ?anges F. The angled
ends of the ?anges F are obtained by cutting off triangular
zontal, diagonal, and vertical brace elements 21, and an
upper rigidifying portion spaced above the lower frame
portion and de?ned by lower horizontal members 22 and
suitably formed and disposed bracing members 23. The
upper frame portion is spaced and supported above the
corner portions of the sheet at the two corners between
which the longitudinal ?ange F extends.
The inner panel I is formed with an upstanding ?ange
H substantially identical to the ?ange H of the outer
panel 0 as already described, rectangular corner portions
as described in connection with the outer panel being cut
from the corners between which the ?ange H extends.
On the other three edges of the panel, rebent ?anges are
lower frame portion by four vertical columns or rods 24
at the corners thereof. A horizontal ?xed bed 25 in the
form of a rectangular plate or the like facing down
wardly and backed by the members 22, is secured at the
upper ends of the columns or rods 24. The rods 24 are
secured at their lower ends to a horizontal table 26 ?xed
on the lower frame portion. Mounted on the table 26
are means for applying the forming pressure in opera
tion of the press, shown as a number of hydraulic cylin
formed, each including an upstanding portion U of sub
stantially the same height as the ?ange H, and an out
wardly bent portion B extending at substantially right
angles to the portion U and having a width substantially 30 ders 27, in this case six, each of which has telescoped
equal to the height of the portion U. The upstanding
therein an upwardly projectable piston 28. The pistons
portions of the transverse rebent ?anges have the inner
carry a movable bed or platen 29 of the press for move
faces thereof substantially in the common transverse
ment thereof toward and from the ?xed bed 25 by opera
planes of the corresponding ends of the ?ange H and the
tion of the cylinders. The platen has apertures in its
rebent ?ange on the other longitudinal edge of the panel. ' corner portions in which are mounted guide bushings or
The upstanding portion of the longitudinal rebent ?ange
sleeves 3t) slidable on the frame rods 24, which thus
is disposed substantially in the plane of the adjacent ends
serve also to guide the vertical movements of the platen.
of the transverse rebent ?anges. The adjacent ends of
At each end of the press, two transversely spaced pairs
the upstanding portions of the rebent ?anges and of the
of toggle links 31 connected by a common horizontal
upstanding ?ange H thus substantially meet along lines 40 pivot rod 32 are provided, one link of each pair being
substantially perpendicular to the plane of the panel,
pivoted to the table 26 and the other to the underside of
while the outwardly bent portions B of the rebent ?anges
the platen. Only one pair of links 31 is shown at each
lie in the same plane parallel to the panel. To provide
end of the press. A longitudinally extending horizontal
for this relationship of the rebent ?anges, square corner
tie member connects the rods 32 to provide a toggle link
portions are cut from the corners between which the
In the
present case, the tie member is shown 'as comprising a
' age for steadying the movements of the platen.
longitudinal rebent ?ange extends, each side of the square
corner portions having a length or width substantially
U of the rebent ?anges, or in other words an extent equal
to the combined width of the portion B and height of the '
tubular element 33 having extending longitudinally there
of a pair of rigidifying plate elements 34 welded thereto
in diametrically opposed relation and disposed in a verti
cal plane. The cylinders 27 are supplied with ?uid under
portion U.
pressure from a suitable source, not shown, through a
Each of the door panels I and O is provided with a
window aperture W and a lock aperture L, the corre
it may be moved to connect said source to branched con
twice the height of the ?ange H or the upstanding portion
sponding apertures of the two panels being disposed in
substantial registry in the completed door to accommo Cl Ct
date a window, screen, or like insert in the opening pro
vided by the apertures W, and a suitable door lock in the
opening afforded by the apertures L. An opening for a
control valve 35 having an operating lever 36 by which
duit means 37 leading to the several cylinders to cause
projection of the pistons, or to connect the conduit means
to exhaust so as to effect collapse or retraction of the
cylinders and pistons.
An actuating cylinder 38 is
mounted on the supporting framework adjacent the con
lock or latch bolt may be punched in any suitable manner
trol valve 35, adapted to be operated by any suitable
in the upstanding portion U of the longitudinal rebent 60 pressure ?uid which may be that employed for cylinders
?ange of the inner panel.
27, and having a piston rod 39 pivotally connected to
In forming the door, suitable material such as wood
may be disposed in the interior of panel I about the aper
tures W and L, and the remainder of the panel substan
tially ?lled with heat and sound insulating material, suit
able adhesive being employed to secure these core or
?ller materials to the panel.
The panel 0 is disposed
the operating lever 36 of the valve, so that movement of
piston 39 in one direction or the other may effect connec
tion of the cylinders 27 to pressure or exhaust. Suitable
electrical means, not shown, may be employed to effect
operation of the cylinder 38 in response to actuation of
over the open side of panel I with the two ?anges H over
a manual pushbutton or like switch to move the valve to
a position connecting the pressure source to cylinders 27 ,
lapping, adhesive being applied to effect securement of
panel 0 to the ?ller materials, and the ‘assembly held
matic means to move the valve 35 to a position exhaust
under pressure until the adhesive has set. The three up
standing ?anges of the outer panel are then bent over the
outwardly extending portions B of the rebent ?anges of
and to cause reverse operation of the cylinder by auto
ing the cylinders 27. In this manner, a cycle of the press
may be set in motion by manually controlled means to
effect the desired forming movement of the platen 29
the inner panel so as to overlap and envelop the same,
toward the bed 25 and the reverse movement to the open,
and thus interlock the two panels. Any suitable means,
idle, or loading position.
‘3,037,546
6
5
ture generally indicated at '40, suitably arranged for coop
corresponds to the space between the inner face‘ of the
block it abuts ‘and the plane of the-‘cutting face of'the
eration with a complementary die structure suitably se
cured 1on the ?xed bed 25. As best shown generally in
lFIG..3," and in detail inFIGS/S to 8, the die structure
40 ‘comprises a number of die parts including a break
?ange F or ?ange portion'U. On the'bed 25 are secured
two shearing .die blocks, not shown, but similar to the
blocks 48 inform, location relative to the pairs of blocks
On the movable platen 29 is secured a forming die struc
or die member 42 extending adjacent onelongitudinal
edge of the platen 29, another bending die member 43
parallel to member 42 disposed adjacent the opposite
platen edge, and a pair of die. members 44 similar to the
member 43 extending at right angles to the members
42 and 43 adjacent the ends thereof, transversely of the
other block, which space is equal to the height of the
50, and operation. The die block structure just described
operates to cut the square corner portions ‘from the sheet
in forming of a panel I.‘
At the right end of die member 43 as‘ viewed in‘iFIG. 3,v
a die block structure for cutting av triangular'corner por
tion from sheet S in forming an outer panel 0 is' shown.
FIGS. 5 and 6 illustrate this structure in greater detail,
and show the loading and the shearing positions of the
platen. The members 42and 43 terminate short of the
transverse planescf the members .44, and the members
44 similarly ‘do not extend to the planes of the inner 15 parts. In respectively abutting relation to the adjacent
ends of the die members 43 and 44, die blocks 52 are
faces of the members 42 and 43, as will be clear from
secured. The blocks ‘52 are generallyv similar to the
FIG. 3. The die member 42 is employed in forming
rectangular or cubical blocks 45, 46 and 50 previously
the ?anges H of the panels I and O, and the die mem
shown and described, but each has a triangularproject
bers 43 ‘and 44 in bending the other three ?anges of
each panel. Die blocks 45 secured on the platen 29 20 ing portion 53 de?ned by the inner face thereof and a
diagonally extending surface. The blocks 52 are ar
abutting the ends of the members 44 adjacent the die
ranged with their inner faces ?ush with the inner faces of
member 42 in effect extend those members to the plane
the die members they abut, and with the apices of the
of the inner face of member 42. Similar die blocks 46
triangular portions substantially in contact, so that the
are secured at the ends of the member 42, but do not
extend to the planes of the inner faces of the die mem 25 diagonal surfaces extend in a common plane diagonally
of the corner de?ned by the inner block faces. A shear
bers 44, the spacing, being substantially equal to the
height of the upstanding ?ange F or ?ange portion U.
die block 54 of rectangular form is mounted on the press
bed 25 in a position such‘ that one of its cutting faces
The blocks in each case have plane bending faces flush
extends substantially in the same .plane as the diagonal
with the inner faces of the die member-s which they abut,
and shearing faces directed toward the planes of the ad 30 surfaces of the triangular portions 53 of blocks '52, as
best shown in FIG. 5, so that it may cooperate there-v
jacent die members. A shearing strip 47 is secured
with to shear o? a triangular corner portion of the sheet
extending between the lower portions of each pair of
S as the die parts move relative to each other from the
blocks 45 and 46, with an outer face in the common plane
position of FIG. 5 to that of ‘FIG. 6. The die block 54
of the bending face ‘of block 46 and the shearing face of
the block 45, as will be clear from FIGS. 3 and 8. Two 35 may, if desired, be the same block employed for coopera
tion with the die blocks 50, being removably mounted on
shearing blocks 48 are secured on the ?xed bed 25, each
the bed 25 to allow of its positioning either in the di
having a pair. of rectangularly related shearing faces and
agonal position of FIGS. 5 and 6‘ or a position substan
being located. to have these faces cooperate with the
tially like that of the block 48 in FIG. 8, with faces‘
shearing faces of one of the pairs of blocks 45 and 46
and the associated strip 47. One of the blocks 48 is 40 parallel to the planes of the shearing faces of the‘co
operating die blocks v50.
shown in ‘FIG. 8. The die block construction at each
It will be appreciated that both the die block struc
end of member 42, with the cooperating block 48, cuts
tures incorporating the blocks 50‘ and the blocks 52 are
off the rectangular corner portion hereinabove described
not actually used at the same time, two similar structures
from a rectangular sheet S from which the panel is
formed. The sheet S is of metal or other suitable self 45 with the blocks 50 being employed when an inner panel
is to be for-med, and two structures with the blocks 52
sustaining material, such as aluminum, stainless steel,
being used when an outer panel is to be formed. By
ordinary steel ‘sheet, or- the like, and is shown in FIG. 3
in phantom by broken line, in position supported on the
die members 42, ‘43,. and 44, ready for the forming op
the use of bolts or like means to secure the various parts,
as well known inthe art, the several blocks and asso—
ciated parts may easily be mounted and removed.
Within the rectangular space de?ned by the die mem
bers 42, 43, and 44 there is disposed an ejector plate 55
having one longitudinal edge in the plane of the inner
face of the die member 42, the other three edges thereof
in FIG. 4. Stops 49 are provided on the die member
43 and one of the members 44 to assure proper position 55 being equally spaced from the inner faces of the members
43 and 44. The ejector plate 55 is of less thickness or
ing of the sheet.
height than the member-s 42, 43, and 44, and has a num
Die blocks are also secured at the adjacent ends of die
ber of ejector rods 56 depending therefrom. The rods
members 43 and 44, the particular form depending upon
56 are secured to the plate 55 vby the screwing of reduced
which of the panels I and O is to be formed. In FIG. 3,
blockconstructions for cutting both square and triangular 60 threaded upper- ends thereof in threaded apertures 57
eration. Depending upon the particular form and ar
rangement of the die means employed on the platen and
bed, the sheet S is folrned either into the inner door panel
I or the outer door panel 0, both substantially as shown
corner portions are shown.
At the corner de?ned at
the left end of member '43 as viewed in the ?gure and
the adjacent end ‘of the adjacent member 44, and as
shown more clearly in FIG. 7, there is provided a pair
extending through the plate, as clearly shown in FIGS. 9
and 10.‘ The rods extend through suitable apertures in
the platen 29‘ and through guide‘ tubes 58 secured as by
welding to the lower face of the platen in registry with
of substantially rectangular die blocks 50, one at each 65 the apertures. An enlargement or collar 59 is provided
on each rod below the associated tube .58 to limit upward‘
of the adjacent ends of members 43 and 44. The outer
end face of each block ‘59 serves as a shearing or cutting
movement of the rod relative to the platen by engagement
face and is spaced from the plane of the inner or bending
with the tube, the arrangement. being such that the high
estrelative level of the ejector plate is the plane of the
face of the die member toward which it is directed, the
inner ‘face of each block 50 being substantially ?ush with
upper surfaces of the die members 42, 43, and 44. When
the die member which it abuts. A pair of shearing strips
the press is in open or loading position, the rods 56,- of
51 similar to strip 47 are employed in a similar manner,
which four are employed in the present instance, engage
each strip abutting the inner face of one ‘of the blocks
on the table 26 and hold the ejector plate 55 elevated to.
5%) and extending with an outer face in the plane of the
the level of the upper faces of the diernembergwhile
cutting face of the block. The length ‘of each strip 75 when the platen 29 is raised ina forming operation, the
3,037,546
8
rods 56 are lifted off the table 26 and the ejector plate
thus brought to a position resting on the platen. This
will be clear from FIGS. 9 and 10, in which the lowered
and raised positions of the platen, and the corresponding
positions of ejector plate 55, are illustrated. In its ele
vated position level with the top surfaces of the members
42, 43, and 44, the ejector plate aids in supporting the
metal sheet S. The sheet S is somewhat larger than the
area de?ned by the members 42, 43, and 44, projecting
outwardly of the inner faces of these die members by a 10
distance substantially equal to the height of the ?anges
F and H or upstanding ?ange portion U to be ‘formed
on the edges. The ejector plate member has a rectangu
lar aperture 60 formed therein corresponding to aperture
W to be cut in the sheet S. A smaller rectangular aper
ture 61 is also provided in the plate 55, corresponding
to the door lock aperture L of the panel. Another aper
ture 62 similar to apertures 60 may be provided, if
desired. Within the outline of the aperture 60, and in
slight clearance relation therewith, there is secured on 20
the platen 29 a rectangular shearing die 63 provided by
plane of the outer face of the corresponding side of die
63, as clearly shown in FIGS. 9, 10, and 12. The die
members 71 cooperate with the shearing die 63 to cut a
portion S’ (FIG. 10) from the sheet to form the opening
W. It will be noted that as exaggeratedly shown in
FIG. 12, each of the members 71, only one of which is
fully shown, has a lower cutting edge 72 which at its cen
tral portion is slightly curved, the curved portion merging
with straight portions of the edge which extend outwardly
and upwardly at a slight angle. By this construction,
each of the members in the forming movement of the
press ?rst engages the sheet S at substantially a point for
holding contact therewith, then cuts the sheet at this point
of contact, continuing the cutting in a progressive shear
ing action as the remainder of the edge engages the sheet.
Drawing of the sheet material during the cutting oper
ation is avoided, and easier and smoother cutting of the
sheet, and a cleaner cut, are provided by this construc
tion and action. The shearing die 63 may have its shear
ing edges similarly formed. The shear die members 71
suitable plates or bars of somewhat greater thickness or
are shown in the present instance as secured to the bed
25 by means of a suitable mounting plate 73 so that
height than the ejector member 55, as best shown in
FIGS. 9 and 10. Within the outline of the aperture 61
they may quickly and easily be attached and removed as
a unit, although of course any appropriate means may
is a shear block 64 of slightly smaller dimensions, se
cured on the platen, and like the die 63 having a some
be employed for this purpose.
Similar shear die mem
bers, not shown, are provided for cooperation with the
shear block 64 to cut the aperture L in the sheet, al
what greater height than the ejector plate. The aper
ture 61, as evident from FIG. 3, is located midway of
the end die members 44, or midway of the length of the
sheet S when disposed in forming position as indicated
by the broken lines in the ?gure, and is spaced slightly
from the die member 43.
The die parts structure, generally designated 65, se
portion cut from the sheet thereby. A rectangular strip
per 74 (FIGS. 9 and 10) is provided disposed within
the area de?ned by the die members 71 and presenting
four edges each substantially engaging against the inner
though the same edge formation is not necessarily em
ployed in view of the relatively small size of the sheet
cured on the bed 25 of the press, as already indicated,
‘face of one of the shear die members 71 to prevent the
complements the die structure 40 on the platen 29 just
described, and engages therewith upon upward movement
of the platen to engage the parts ‘for forming the sheet S
disposed therebetween into an inner panel I or outer panel
portion S’ from remaining frictionally engaged with the
members 71. The stripper 74 is arranged for vertical
0, as the case may be. The structure 65 includes die
means cooperating with each of the several die members
and elements mounted on the platen 29. Speci?cally, in
addition to the shearing or cutting blocks already men
tioned, there is secured on the lower face of the bed 25
tending upwardly therefrom through suitable registering
an elongated bending die member 66 extending parallel
to and spaced inwardly relative to the bending die mem
ber 43, the spacing being substantially equal to the thick
ness of the sheet S, as will appear from FIGS. 9 to 11
movement relative to the bed 25, having a suitable num
ber of guide rods 75, only one of which is shown, ex
apertures in the mounting plate 73 and bed 25, the rods
sliding in the apertures to allow corresponding move
ment of the stripper and having enlarged heads 76 or the
like on their upper ends to limit the downward move
ment of the stripper. Suitable means such as a plurality
of coil springs 77, only one of which is shown, are en
gaged between the mounting plate 73 and the stripper 74
to urge the stripper positively away from the mounting
plate so as to overcome any friction tending to hold the
inclusive. A pair of similar die members 67 are secured
sheet portion 8' within the shear die members 71. The
on the bed in substantially the same relationship to the
stripper 74, as will be clear from FIG. 10, moves rela
end die members 44, as shown in FIGS. 5 and 8. An
other generally similar member 68 is provided on the 50 tively upward in the cutting action, by reason of the
shearing die 63 forcing the sheet portion S’ and the
bed parallel to the die member 42, the outer face of
stripper upwardly above the level of the die members 71.
member 68 being spaced inwardly of the plane of the
In operation of the press, the rectangular sheet S
inner face of member 42 by the thickness of sheet S.
is disposed as shown in FIG. 3 on the die parts or mem
Each of the die members 66 and 67 has a rabbet 68
formed in the lower outer corner edge thereof, the rabbet CA' 61 bers mounted on the platen, in the lowered position there
of corresponding to the open or loading condition of the
being de?ned by a pair of rectangularly related surfaces
press, and the control valve 35 is operated by means of
each of a width substantially equal to the ?ange height.
the actuating cylinder 38 and its electrical control cir
A die bar 70 of substantially square cross section is re
cuit to effect ?ow of ?uid under pressure to the cylin
movably secured in the rabbet of each member 66 and
ders 27 so as to cause projection of the pistons 28, lifting
67, the die bar 70 having each of its sides of such width
the platen with the die means thereon and the sheet S
that it ?ts in the rabbet with two adjacent faces engaging
overlying the same upwardly into pressing engagement
against the rabbet surfaces and its other two faces flush
with the die means on the bed 25. As will be readily
with the outer and lower surfaces of the die member 66
evident from ‘FIGS. 5 to 8 inclusive, the corner portions
or 67 to which ‘it is secured. The rabbets 69 and die
of the sheet will be sheared away by the cooperating die
bars 70 extend for the full length of the respective die
blocks on the platen and bed, as previously described. In
members 66 and 67, which are of lengths equal to the
the case of the square and rectangular corner portions,
full distance between the die members between which the
the shearing is not completed until the upper edges of
members 66 and 67 extend. That is, the die members 66,
the strips 47 or 51 have moved upwardly past the lower
67 and 68 engage each other at their respectively adja
edges of the die blocks on the bed. The die blocks 45
cent ends to de?ne closed corners, as best shown in
and 46 and the shear strip 47, with the cooperating die
FIG. 8.
block 48, by which rectangular corner portions of the
Also secured on the press bed 25 are four shear die
members 71 rectangularly arranged for cutting coopera
sheet are cut away at the ends of the hinge-edge forming
ation with the shearing die 63, each of the die members
die portions are the same for either the inner panel I or
71 being mounted with the inner face substantially in the 75 the outer panel 0, and need not be changed when one or
3,037,546
10
the other panel is to be formed. The pairs of die blocks
52 and the cooperating block 54 on the bed for shearing
off the triangular corner portions of the sheet when an
outer panel is to be formed therefrom, however, must
be replaced by the pairs of die blocks 50 on the platen
and the cooperating die blocks on the bed which serve to
sever the square corner portions from the sheet when
the inner panel I is to be formed therefrom. Of course,
the reverse is true when an outer panel 0 is to be formed
after the press has been employed to form an inner door
panel I. Similarly, the die bars 70 must be secured in the
the springs 77, to effect the progressive shearing or cut"
ting of the several sides of the opening. The door'lock
opening is similarly cut at this time, and in'substantially
the same manner.
This completes the forming ‘of the panel prior to the
employment thereof in the ?nal door assembly, and the
platen 29 now is caused to descend, preferably by an
tomatic means which actuate the cylinder 38 to cause
movement of the control valve‘ 35 to.a position effecting
exhaust of the pressure ?uid from the cylinders‘ 27, so
that the pistons 28 are retracted. If desired, of course,
manually controlled means may be employed to'act-uate
the cylinder 38, or the cylinder and its connection to the
valve operating lever. ‘36 may be eliminated altogether,
15 and the valve manually operated as and when desired.
rabbets 69 of the bending die members 66 and 67 on the
bed when an outer door panel is to be formed, and
mounted on the inner faces of the die members 43 and 44
on the platen, as shown in FIG. 11, when an inner panel
As the platen descends, the springs 77 urge the stripper 74
I is to be formed. It will be evident, that each of the
downwardly to force the portion S’ of the sheet which
strips 47 and Sll might be formed integral with the asso
has been severed therefrom in the formation of the win
ciated block 45 or 50, and in any case may be considered
dow opening W downwardly out of engagement with the
as in effect forming a cutting portion thereof.
Assuming that an outer panel 0‘ is to be formed and 20 shearing die members 71, so that this portion of the sheet
will descend with the remainder of the sheet. As has al
that the die means have been employed as described,'the
ready been indicated, the portion of the sheet severed in
sheet S on the platen is raised by'upward movement of
the formation of the door lock opening, due to its rela
the platen from the full-line position of FIGURE. 9 to
tively small size, does not necessarily require a stripper
the dotted-line position, in the course vof which the ejec
tor member is engaged by .the platen ‘and raised thereby. 25 construction because it may readily be withdrawn from
the shearing structure by hand if it becomes lodged there
In this raised position, the sheet S supported on the die
in, but a stripping arrangement generally similar to that
of the stripper 74 may be provided if desired. When the
platen reaches its lowermost position, it is halted by the
bers 71 and the stripper 74, as well as with the shear die 30 full retraction of the pistons 28 within the cylinders 27,
‘and also by engagement of the lower ends of the tubular
members which cooperate with the shear block 64 to form
guides 58 on the collars 59 of the ejector rods 56 depend
the door lock aperture L. At this same point in the up
ing from the ejector plate or member 55, the lower ends
ward movement of the sheet on the platen, the corner die
of the rods engaging on the table .26, so that a positive
blocks 48 and 54 on the press bed are also in contact
with the upper surface of the sheet, ready to begin the 35 and steady positioning of the platen in its lowermost
means on the platen has just come into contact with the
bending die members 66,67, and 68 of the bed,'.includ
ing the die bars 70, and also with the shearing die mem
shearing of the rectangular and triangular portions. As
position is obtained. ‘During the descent of the platen,
the upward movement of the sheet continues from the
asv the rods 56 come into engagement ‘with the table 26,
momentary contacting position just .described, the two
the ejector plate 55 is held against further downward
movement, while the platen and the die means thereon
pairs or sets of corner die blocks‘ 45 and 46'and the strips
47 cooperate with the die blocks 48 to effect shearing 40 are free to continue their movement until the ejector guide
of the rectangular corner portions from the sheet, the
shearing however not being complete'until each block
tubes 58 engage the rod collars 54, with the result that
the ejector plate and the sheet S, now in the form of the
panel 0, is brought to the level of the upper surfaces of
the die members 42, 43, and 44, so that it may readily
48 comes into shearing relation with the shear strip.47
which spans the gap between the associated blocks 45
and 46. At the same time, each die block ‘54 with its 45 be removed from the press. After removal of the por
tions cut from the sheet in the formation of the window
diagonally arranged shearing edge cooperates with the
diagonal shearing face or edge provided by the triangular
and lock openings, another sheet 8 may be disposed on
the platen-carried die means and the cycle repeated to
form another outer door panel 0, in the manner just
corners of the sheet, to sever the triangular ‘corner por
tions therefrom which provide the angled ends of the 50 described.
If an inner panel I is to be formed from the sheet S,
longitudinal upstanding ?anges F of the outer panel.
the die bars 70 are secured on the inner faces of the re
While the several corner portions are being severed,'the
spective bending die members 43 and 44, as shown in
?anges F and H of the outer panel 0 are being formed
FIG. 11, and the pairs or sets of corner die blocks 50
by cooperation of the bending die members 42, 43, and 44
on the platen and the corresponding die members 68, 66, 55 and shear strips 51, with the cooperating blocks of the
die means 65, are secured on the platen and bed. When
and 67 on the bed. By reason of the slight spacing be
the control valve is operated to effect projection of the
tween the planes of the outer faces of the die members
pistons 28 from the cylinders 27 to raise the platen, the
on the bed and the inner faces of the corresponding die
ejector member or plate 55 is engaged from beneath and
members on the platen, as shown in FIGS. 9 andlO, the
edge portions of the sheet extending outwardly beyond 60 raised by the platen, the sheet as it is raised by the die
means on the platen having the rectangular and square
the inner faces of the bending die members on the platen
corner portions cut therefrom ‘by the several die. block
are not sheared, but are bent upwardly, as shown in
structures already described, substantially in the manner
FIGS. 9 and 10, in which the longitudinal ?ange \F is
described in connection with the forming of the outer
shown as being formed by bending of this marginal
panel 0. Substantially simultaneously or contemporane~
portion of the sheet as the longitudinal die member 43
ously with the severing of the corner portions, the rebent
moves upwardly beyond the lower face of the die mem
?anges are formed of the marginal portions of the sheet
ber 66. It will be understood that the folding of the
by the cooperation of the rectangularly related surfaces
other ?ange F and of the ?ange H is effected in the same
of the rabbets 69 of the die members 66 and 67 on the
manner as shown and described in connection .‘with the
longitudinal ?ange F. The cutting of the window and 70 bed and the inner ‘and upper faces of the die bars 70
mounted on the die members 43 and 44,v substantially
lock apertures in the sheet does not begin until the platen
as shown in FIG. l‘l. It will be apparent that by reason
has moved to the point at which the shearing die 63 ‘en
of the slight spacing between the planes of the. outer
gages the lower vsurface of the sheet ‘and continues up
faces of the members 66 and 617 and the inner faces of
wardly to force the sheet against the curved cutting edges
72 of the shearing die members‘ 71,‘ against the force of 75 the die ‘members 43 and 44, the die bars when secured on
portions 53 of the die blocks 52, at each of the other
8,087,546
12.
11
the die members 43 and 44 will similarly have a space
substantially equal to the thickness of the sheet between
the planes of their inner faces and the planes of the ver
tical rabbet-de?ning surfaces, and the bars 70 are se
cured at such a level that their upper faces are similarly
spaced from the horizontal rabbet-de?ning surfaces of
the members 66 and 67 when the lower faces of those
it on the platen at a position such as to come within the
outline of the opening 61, substantially in the manner of
the shear die 63 in connection with the window open
ing 60.
Where herein the various parts of the inventive struc
ture have been referred to as located in a right or left, or
an upper or lower position, it will be understood that this
is done solely for the purpose of facilitating the descrip
tion, and that such references relate only to the relative
face of the sheet in opposition to the upper surface of
the ejector plate 55 which underlies the sheet. The cut 10 positions of the parts as shown in the drawings.
Also, it is to be understood that the illustrated em
ting of the Window and lock openings in the sheet is ef
bodiment of the invention is exemplary, and that many
fected in the manner already described in connection
changes and modi?cations may be made therein without
with the formation of the outer door panel 0. The low
departing from the invention, and that the invention is
ering of the platen and the positioning of the sheet by
members have come into engagement vwith the upper sur~
the ejector plate a convenient level for removal follows as 15 not to be limited except as required by the scope and
spirit of the appended claims.
in the case of the outer panel.
I claim:
It is pointed out that it is necessary to reverse the sheet
1. In a press having complemental die members rel~
from which an inner panel is to be formed relative to the
atively movable opposedly into engaged relation for bend
sheet from which an outer panel is formed. The panels
ing marginal portions of adjacent edges of a metal sheet
must be so formed that when they are in the assembling
to provide thereon either upstanding ?anges of prede
relation generally indicated in FIG. 4, the ?anges F and
termined height having at least one end inclined or rebent
H of panel 0 extend toward the upstanding ?ange por
?anges each having an upstanding portion of substantial
tions U and ?ange H of panel I, and in planes parallel
ly said height and an outturned portion extending from
thereto, with the ?anges H at corresponding edges of the
panels and the apertures W and L of the two panels in 25 said upstanding portion a distance substantially equal
to said height, for cutting off a corner portion of the
respectively registering relation. Since as explained
sheet between said adjacent edges prior to the forming
ereinabove both panels are formed ‘with the ?anges H
of said ?anges, and for contemporaneously cutting a sub
at the same side or edge of the die means and the up
standing ?ange portions and ?anges of both are formed
stantially rectangular opening in the sheet, ?rst bending
by folding of the sheet edges upwardly, it will be ap
die means on a ?rst of said die members having substan
parent that if each panel were also formed with the aper
tially parallel to the direction of said relative movement
ture W at the left-hand portion thereof as viewed in
a plane surface of an extent in said direction at least equal
FIG. 3, the panels could not be assembled as explained
to said height, second bending die means on the second
hereinabove. To provide for the necessary relative re
die member having a ?rst plane face parallel to the plane
versal of one panel relative to the other without requir 35 of said plane surface and spaced therefrom by substan
ing a time-consuming and tedious rearrangement of the
tially the thickness of said sheet and also having a sec~
die means on the platen and on the bed, the ejector mem~ _
ond plane face normal to said ?rst face, said second
ber or plate 55 and the shearing die 63 associated with
‘bending die means having therein a dihedral rabbet de
‘the opening 60 thereof are arranged for ready reposi
?ned by a pair of rectangularly related surfaces each
tioning on the platen. In order properly to form either 40 having a width substantially equal to said height with
an inner or outer panel after the press has been used to
one extending substantially parallel to said ?rst face and
form the other type of panel, with the ejector plate 55 in
the other substantially parallel to said second face, a
the position shown in FIG. 3, having the opening 60 at
die bar of substantially square cross section each side of
the left end portion thereof, the member 55 is reversed
which has a width substantially equal to said height, said
in position so that the opening 60 is at the right hand
bar tbeing selectively mountable either on said second
portion thereof, or in other words at the right hand por
die means in said rabbet with two adjacent sides there
tion of the platen. This is accomplished by unscrewing
of substantially ?ush with the corresponding faces of said
the ejector rods 56 from the threaded openings 57 in the
second die means or on said ?rst die means projecting
ejector plate, so that the ejector member may be re
from the plane surface with one side substantially nor
moved from the platen, turned about its transverse axis
mal thereto and a Side adjacent said one side parallel to
to position the previously upper face thereof as the lower
the plane surface and spaced by substantially the thick
face, then replacing the ejector plate on the platen, and
ness of said sheet from the plane of said ?rst rabbet sur
again screwing the upper ends of the ejector rods 56 into
face, means for detachably mounting said bar selectively
the threaded openings 57 of the ejector, this time from
on one of said bending die means, means on at least one
the opposite face of the plate 55. The opening 60 now
of said ?rst and second die means for supporting there
of course is located at the right-hand portion of the
between in a plane substantially normal to the planes of
forming structure. The die 63, being bolted or other
said plane surface and said ?rst face a metal sheet edge
wise removably secured on the platen, may readily be
portion which measured from said plane surface to the
detached and secured in its new position within the out
adjacent sheet edge has a width substantially equal to
line of aperture 60 either before or after the reversed 60 said height, said bar when mounted in said rabbet coop
ejector 55 is disposed in its new position. It will be noted
erating with said plane surface upon said die member
that the threaded apertures through the ejector member
movement to bend said edge portion into an upstanding
are spaced the same distance from ‘the adjacent ends of
?ange of said predetermined height and when mounted
the member, and from the transverse bending die mem
on said plane surface cooperating with said rabbet-do
bers 44, so that there is no di?iculty in the repositioning r ?ning surfaces upon said die member movement to bend
of the ejector plate, and the plate is ‘located in exactly
the same relation to the die members 42,, 43, and 4-4 rc
gardless of the position of the opening 60.
In the present instance, the lock opening 61 is shown
the portion of the sheet adjacent said edge portion to
a position substantially normal to the edge portion and
to the body of the sheet to provide the upstanding por
tion of a rebent ?ange having said edge portion as the
as located exactly half-way between the ends of the 70 outturned portion, rectangularly arranged ?rst cutting die
ejector plate 55, so that it is not necessary to make any
means on one of said die members de?ning an outline
provision with regard to it because of the reversal of the
corresponding to an opening to be cut in the sheet and
ejector plate. If the opening 61 were not midway of
affording support for the sheet inwardly from said out
the length of the ejector member, however, it would be
line, second cutting die means on the other of the die
necessary only to remove the shear block 64 and relocate
members rectangularly arranged to telescope in close-?t~
3,087,546
1.3.
114
ting relation with said?rst cutting ,die means upon said
die bar of substantially square cross section each side
of which has a width substantially equal’ to said. height,
said bar being selectively mounted either on said second
die means in said rabbet with two adjacent sides thereof
die member movement to cut the sheet along said out
line for severing therefrom a portion of the sheet to pro
vide said opening therein, at least one of said ?rst and
second cutting die means comprising shear elements each
having a curved cutting edge affording a progressive shear
ing of the sheet, two pairs of cutting elements selectively
disposable on one of said die members positioned to have
substantially ?ush with the corresponding faces of .said
second means or on said ?rst die means projecting from
the plane surface with one side substantially normal. there
to and a side adjacent said one side parallel to the. plane
surface and spaced Iby substantially the thickness of said
said sheet corner portion disposed adjacent thereto upon
insertion of said sheet in the press, one of said pairs when 10 sheet from the plane of‘ the rabbet surface parallel to
disposed on said die member having the cutting elements
thereof presenting a pair of rectangularly related plane
said ?rst face of the second die means, means for de
tachably mounting said bar selectively on one of said
surfaces each parallel to the direction of movement of
bending die means, means on at least one of said ?rst
and second bending die means for supporting therebe
the die members and extending in a plane parallel to the
line of one of said adjacent edges and intersecting the 15 tween in a plane substantially normal to the planes of
said plane surface and said ?rst face a metal sheet edge
line of the other edge, the projected planes of said plane
portion which measured from said plane surface to the
surfaces de?ning on the sheet a square corner portion
adjacent sheet edge has a width substantially equal to
of an extent inward from each of said edges substan—
said height, said bar when mounted in said rabbet co
tially equal to the combined height and width of said
operating with said plane surface upon said die member
upstanding and outturned portions respectively of said
movement to bend said edge portion into an upstand
rebent ?ange, the other of said pairs of cutting elements
ing ?ange of said predetermined height and when mount~
when disposed on said one die member having the cut
ed on said plane surface cooperating with said rabbet
ting elements thereof presenting a pair of aligned plane
de?ning surfaces upon said die member movement to
surfaces extending diagonally relative to said adjacent
sheet edges, the projected planes of said diagonal plane 25 bend the portion of the sheet adjacent said. edge portion
to a position substantially normal to the edge portion
surfaces de?ning on the sheet a triangular corner por
and to the body of the sheet to provide the upstanding
tion of an extent along each of said edges substantially
portion of a rebent ?ange having said edge portion as
equal to said height, a cutting die block on the other
the outturned portion, rectangularly arranged ?rst shear
of said die members having a pair of rectangularly re
lated plane surfaces each parallel to said direction of 30 ing die means on one of said die members de?ning an
die member movement and of at least said corner por
tion
said
said
tion
extent, said die block being detachably securable on
other die member selectively in one position with
plane surfaces thereof respectively in shearing rela~
with the plane surfaces of said one pair of cutting
elements or in a second position with one of said plane
surfaces thereof extending diagonally relative to said
adjacent edges in shearing relation with said diagonal
plane surfaces of the other pair of cutting elements,
outline corresponding to an opening to be cut in the.
sheet, second shearing die means on the. other of the die
members rectangularly arranged to telescope in close
?tting relation with said ?rst shearing die means upon
said die member movement to cut the sheet along said
outline for severing therefrom a portion of the sheet to
provide said opening therein, at least one of said ?rst
and second shearing die means comprising shear ele
ments each having a curved cutting edge affording a pro
means for selectively securing said pair of cutting ele 40 gressive shearing of the sheet, two pairs of cutting ele
ments detachab-ly on said one die member, and means for
ments selectively disposable on one of said die members
detachably securing the cutting die block on said other
positioned to have said sheet corner portion disposed ad
jacent thereto upon insertion of said sheet in the press,
die member selectively in one of said positions, where
one of said pairs when disposed on said diermember pre
‘by preliminary to formation of rebent ?anges on adjacent
edges of the sheet the ?rst cutting element pair may co 45 senting a pair of rectangularly related plane surfaces each
parallel to the direction of movement of the die members
operate with said die block in said ?rst position thereof
and extending in a plane parallel to the line of one of said
to shear said rectangular corner portion from the sheet,
u
and prior to formation of upstanding ?angesron said edges
said other cutting element pair may cooperate With the
die block in said second position thereof to shear said
triangular corner portion from the sheet.
2. In a P ress having com lemental die members rela- '
tively movable opposedly into engaged relation for bend
ing marginal portions of adjacent edges of a metal sheet
to provide thereon either upstanding ?anges of predeter
mined height having at least one end inclined or rebent
adjacent edges and intersecting the line of the other edge,
the projected planes of said plane surfaces de?ning on
the sheet a square corner portion of an extent inward
from each of said edges substantially equal to the com
bined height and width of said upstanding and- outturned
portions respectively of said rebent ?ange, the other of
said pairs of cutting elements when disposed on said one
die member presenting a pair of aligned plane surfaces
extending diagonally relative to said adjacent sheet edges,
the projected planes of said diagonal plane surfaces de
?anges each having an upstanding portion of substan
?ning on the sheet a triangular corner portion of an extent
tially said height and an outturned portion extending
along each of said edges substantially equal to saidheight,
from said upstanding portion a distance substantially
equal to said height, for cutting off a corner portion of 60 a pair of cutting die blocks selectively securable ‘on'the
other of said die members, one or said die blocks hav
the sheet ‘between said adjacent edges prior to the form
ing a pair of rectangularly related plane surfaces each
ing of said ?anges, and for contemporaneously cutting
parallel to said direction of’ die member movement and of
a substantially rectangular opening in the sheet, ?rst
at least said rectangular corner portion extent along said
bending die means on a ?rst of said die members hav
edges, the other of said die blocks having a plane surface
ing substantially parallel to the direction of said relative
parallel to said direction of movement and extending di
movement a plane surface of an extent in said direction
agonally relative to said. adjacent sheet edges with the
at least equal to said height, second bending die means
plane thereof de?ning \with said ‘edges a ‘triangle corre
on the second die member having a ?rst plane face par
sponding to said triangular corner portion, said one die
allel to the plane of said plane surface and spaced there
block being detachably securable on said other die mem
from by substantially the thickness of said sheet and
‘her in position with saidv plane surfaces thereof respec
also having a second plane face normal to said ?rst face,
tively in shearing relation with the plane surfaces of
said second bending die means having. therein a dihedral
rabbet de?ned Iby‘a pair of rectangularly related surfaces
said one pair of cutting elements, said other die block
each' extending substantially parallel to one of said faces
being detachably securable on the other die member with
and having a width substantially equal to said height, a 75 said plane surface thereof in shearing relation with said
3,037,546
16
15
diagonal plane surfaces of the other pair of cutting ele
ments, means for detachably securing said cutting ele
second die elements comprising shear elements each hav
ments selectively on said one die member, and means for
of the sheet.
5. In a press having complemental die members rela
ing a curved cutting edge a?ording a progressive shearing
detachably securing the die blocks selectively on said
other die member whereby the ?rst cutting element pair
tively movable opposedly into engaged relation for bend
ing a marginal portion of a metal sheet to provide thereon
may cooperate with said one die block to shear said square
either an upstanding ?ange of predetermined height or a
corner portion from the sheet and said other cutting ele
rebent ?ange having an upstanding portion of substan
ment pair may cooperate with the other die block to shear
tially said height and an outturned portion extending from
said triangular corner portion from the sheet.
3. Structure substantially as de?ned in claim 2, in 10 said upstanding portion a distance substantially equal to
said height and contemporaneously cutting an opening in
which each of the cutting elements of said one pair is
spaced from said plane surface of the other cutting ele
ment thereof, and including a shear strip having a plane
face ?ush with the plane surface of one of the cutting ele
the sheet, ?rst die means on a ?rst of said die members
having substantially parallel to the direction of said rela
tive movement a plane surface of an extent in said direc
ments of said one pair and of appreciably less extent than 15 tion at least equal to said height, second die means on
the second of said die members having a plane face paral
such plane surface in said direction of movement and ex
lel to the plane of said plane surface and spaced therefrom
tending from said one element at least to the plane of the
by substantially the thickness of said sheet, a dihedral rab
plane surface of said other cutting element.
bet de?ned in said second die means having therein a pair
4. In a press having complemental die members rela
of rectangularly related surfaces one of which extends
tively movable opposedly into engaged relation for bend
substantially parallel to said face and has a width substan
ing a marginal portion of a metal sheet to provide thereon
either an upstanding ?ange of predetermined height or a
tially equal to said height, a die bar of a cross section
rebent ?ange having an upstanding portion of substan
tially said height and an outturned portion extending from
said upstanding portion a distance substantially equal to
said height and contemporaneously cutting a substan~
tially rectangular opening in the sheet, ?rst die means
providing two adjacent sides corresponding to said rabbet
surfaces and a third side parallel to one of said two sides,
said bar being selectively mounted either in said rabbet
with said two adjacent sides thereof engaging said rab
bet surfaces and said third side substantially ?ush with
on a ?rst of said die members having substantially par
said face of said second means or on said ?rst die means
allel to the direction of said relative movement a plane
projecting from the plane surface with one of said two
surface of an extent in said direction at least equal to 30 sides substantially normal thereto and said third side
parallel to the plane surface and spaced by substantially
said height, second die means on the second of said die
members having a ?rst plane face parallel to the plane
the thickness of said sheet from the plane of said one
of said plane surface and spaced therefrom by substan
rabbet surface, means for detachably mounting said bar
tially the thickness of said sheet and also having a sec
selectively on one of said die means, means on at least
ond plane face normal to said ?rst face, said second die 35 one of said ?rst and second die means for supporting
means having therein a dihedral rabbet de?ned by a pair
therebetween in a plane substantially normal to the planes
of rectangularly related surfaces each extending substan
of said plane surface and said plane face a metal sheet
tially parallel to one of said faces and having a width sub
edge portion which measured from said plane surface to
stantially equal to said height, a die bar of substantially
square cross section each side of which has a width sub
the adjacent sheet edge has a width substantially equal to
40 said height, said bar when mounted in said rabbet co
stantially equal to said height, said bar being selectively
mounted either on said second die means in said rabbet
operating upon said die member movement with said
plane surface to bend said edge portion into an upstand~
with two adjacent sides thereof substantially flush with
ing ?ange of said predetermined height and when mounted
the corresponding faces of said second means or on said
on said plane surface cooperating upon said die mem
ber movement with said rabbet surfaces to bend the por
?rst die means projecting from the plane surface with one
side substantially normal thereto and a side adjacent said
one side parallel to the plane surface and spaced by sub
stantially the thickness of said sheet from the plane of
the rabbet surface parallel to said ?rst face of the second
die means, means for detachably mounting said bar se- '
lectively on one of said die means, means on at least one
of said ?rst and second die means for supporting there
between in a plane substantially normal to the planes of
said plane surface and said ?rst face a metal sheet edge
tion of the sheet adjacent said edge portion to a position
substantially normal to the edge portion and to the body
of the sheet to provide the upstanding portion of a rebent
?ange having said edge portion as the outturned portion,
?rst shear die means on one of the die members corre
sponding in outline to an opening to be cut in the sheet,
and second shear die means on the second of the die
members, said ?rst and second shear die means being ar
ranged to telescope in close-?tting relation upon relative
portion which measured from said plane surface to the '
movement of the die members toward each other to sever
adjacent sheet edge has a width substantially equal to
a portion from the sheet to provide said opening therein.
6. In a press having complemental dic members rela~
tively movable opposedly into engaged relation for bend
ing marginal portions of adjacent edges of a metal sheet
said height, said bar when mounted in said rabbet co
operating with said plane surface upon said die member
movement to bend said edge portion into an upstanding
?ange of said predetermined height and when mounted on
said plane surface cooperating with said rabbet-de?ning
surfaces upon said die member movement to bend the
portion of the sheet adjacent said edge portion to a posi
tion substantially normal to the edge portion and to the
body of the sheet to provide the upstanding portion of a
rebent ?ange having said edge portion as the outturned
portion, rectangularly arranged ?rst die elements de
?ning an outline corresponding to an opening to be cut
in the sheet and affording support for the sheet inwardly
from said outline, second die elements on the other of
to provide thereon either upstanding ?anges of predeter
mined height or rebent ?anges each having an upstand
ing portion of substantially said height and an outturned
portion extending from said upstanding portion a dis
tance substantially equal to said height and for cutting
' off a corner portion of the shcet between said adjacent
edges, ?rst die means on a ?rst of said die members hav
ing substantially parallel to the direction of said relative
movement a plane surface of an extent in said direction
at least equal to said height, second die means on the
second of said die members having a ?rst plane face paral
lel to the plane of said plane surface and spaced therefrom
close-?tting relation with said ?rst die elements upon said
by substantially the thickness of said sheet and also hav
die member movement to cut the sheet along said outline
ing a second plane face normal to said ?rst face, said sec—
for severing therefrom a portion of the sheet to pro
ond die means having therein a dihedral rabbet de?ned
vide said opening therein, at least one of said ?rst and 75 by a pair of rectangularly related surfaces having a width
the die members rectangularly arranged to telescope in
3,037,546
17
18
substantially equal to said height With one extending sub
stantially parallel to said ?rst face and the other sub
stantially parallel to said second face, ‘a die bar of sub
ing marginal portions of adjacent edges of a metal sheet
to provide thereon either upstanding ?anges of predeter
stantially square cross section each side of which has a
?anges each having an upstanding portion of substantially
mined height having at least one end inclined or rebent
width substantially equal to said height, said bar being se
said height and an outturned portion extending from said
lectively mounted either on said second die means in said
upstanding portion ‘a distance substantially equal to said
rabbet with two adjacent sides thereof substantially ?ush
height, and for cutting off a corner portion of the sheet
with the corresponding faces of said second means or on
between said adjacent edges prior to the forming of said
?anges, ?rst die means on a ?rst of said die members hav
said ?rst die means projecting from the plane surface
with one side substantially normal thereto and a side ad 10 ing substantially parallel to the direction of said relative
movement a plane surface of an extent in said direction ‘at
jacent said one side parallel to the plane surface and
least equal to said height, second die means on the second
spaced by substantially the thickness of said sheet from
die member having a plane face parallel to the plane of
the plane of said one rabbet surface, means for detach
said plane surface and spaced therefrom by substantially
ably mounting said bar selectively on one of said die
means, means on at least one of said ?rst and second 15 the thickness of said sheet, a dihedral rabbet de?ned in
said second die means by a pair of reetangularly related
die means for supporting therebetween in a plane sub
surfaces one of which extends substantially parallel to said
stantially normal to the planes of said plane surface and
face and each having a width substantially equal to said
said ?rst face a metal sheet edge portion which measured
height, ‘a die bar of a cross section providing two adjacent
from said plane surface to the adjacent sheet edge has a
width substantially equal to said height, said bar when 20 sides corresponding to said rabbet surfaces and a third
side parallel to one of said two sides, said bar being selec
mounted in said rabbet cooperating with said plane sur~
tively mounted either in said rabbet with said two adjacent
face to bend said edge portion into an upstanding ?ange
sides thereof engaging the rabbet surfaces and said third
of said predetermined height upon said die member move
side substantially ?ush with said face of said second means
ment and when mounted on said plane surface cooperat
ing upon said die member movement with said rabbet 25 or on said ?rst die means projecting from the plane sur
face with one of said two sides substantially normal thereto
surfaces to bend the portion of the sheet adjacent said
and said third side parallel to the plane surface and spaced
edge portion to a position substantially normal to the
by substantially the thickness of said sheet from the plane
edge portion and to the body of the sheet to provide the
of said one rabbet surface, means for detachably mount
upstanding portion of a rebent ?ange having said edge
portion as the outturned portion, two pairs of cutting ele 30 ing said bar selectively on one of said die means, means
ments selectively disposable on one of said die members
on at least one of said ?rst and second die means for
supporting therebetween in a plane substantially normal
to the planes of said plane surface ‘and said plane face a
metal sheet edge portion which measured from said plane
one of said pairs when disposed on said die member
presenting a pair of rectangularly related plane surfaces 35 surface to the adjacent sheet edge has a width substantially
equal to said height, said bar when mounted in said rabbet
each parallel to said direction of movement and extending
cooperating upon said die member movement with said
in a plane parallel to the line of one of said adjacent
plane surface to bend said edge portion into an upstanding
edges and intersecting the line of the other edge, the
?ange of said predetermined height and when mounted on
projected planes of said plane surfaces de?ning on the
sheet a rectangular corner portion of an extent inward 40 said plane surface cooperating ‘with said rabbet surfaces
upon said die member movement to bend the portion of
from each of said edges substantially equal to the com
the sheet adjacent said edge portion to a position sub
bined height and Width of said upstanding and outturned
stantially normal to the edge portion ‘and to the body of
portions respectively of said rebent ?anges, the other of
the sheet to provide the upstanding portion of a rebent
said pairs of cutting elements when disposed on said one
die member presenting a pair of aligned plane surfaces ex 45 ?ange having said edge portions as the outturned portion,
two pairs of cutting elements selectively disposable on one
tending diagonally relative to said adjacent sheet edges,
‘of said die members positioned to have said sheet corner
the projected planes of said diagonal plane surfaces de?n
disposed adjacent thereto upon insertion of said sheet in
ing on the sheet a triangular corner portion of an extent
the press, one of said pairs when disposed on said die
along each of said edges substantially equal to twice said
member having the cutting elements thereof presenting a
height, a pair of die blocks selectively securable on the
pair of rectangularly related plane surfaces each parallel
other of said die members, one of said die blocks having a
to the direction of movement of the die members and
pair of rectangularly related plane surfaces each parallel to
extending in a plane parallel to the line of one of said lad
said direction of die member movement, said one die block
jacent edges and intersecting the line of the other edge,
being detachably sccurable on said other die member in
a position with said' plane surfaces thereof respectively in 55 the projected planes of said plane surfaces de?ning on the
sheet a square corner portion of an extent inward from
shearing relation with the plane surfaces of said one pair
each of said edges substantially equal to the combined
of cutting elements, the other die block having a plane
height ‘and width of said upstanding and outturned por
surface parallel to said direction of movement, said other
tions respectively of said rebent ?ange, the other of said
die block being detachably securable on said other die
pairs of cutting elements when disposed on said one die
member in ‘a position with said plane surface thereof ex
member having the cutting elements thereof presenting a
tending diagonally relative to said adjacent edges in shear
pair of aligned plane surfaces extending diagonally rela
ing relation With said diagonal plane surfaces of the other
positioned to have said sheet corner portion disposed ad
jacent thereto upon insertion of said sheet in the press,
pair of cutting elements, means for detachably securing
tive to said adjacent sheet edges, the projected planes of
said diagonal plane surfaces de?ning on the sheet a tri
said cutting elements selectively on said one die member,
and means for detachably securing the die blocks on said 65 angular corner portion of ‘an extent ‘along each of said
other die member selectively in said respective positions
thereof, whereby prior to formation of rebent ?anges
on adjacent edges of the sheet the ?rst cutting element
edges substantially equal to twice said height, a pair of die
blocks selectively securable on the other of said die mem
bers, one of said die blocks having a pair of rectangularly
related plane surfaces each parallel to said direction of
pair may cooperate with said one die block to shear said
square corner portion from the sheet, and prior to for 70 die member movement, said one die block being detach
ably securable on said other die member in a position with
mation of upstanding ?anges on said edges said other cut
ting element pair may cooperate with the other die block
to shear said triangular corner portion from the sheet.
7. In a press having complemental die members rela
said plane surfaces thereof respectively in shearing rela
tion with the plane surfaces of said one pair of cutting
elements, the other die block having a plane surface
tively movable opposedly into engaged relation for bend 75 parallel to said direction of movement and being detach
3,0325%
19
20
ably securable on said other die member in a position with
of elements de?ning on the sheet a rectangular corner
portion, and a third die block secured on said other die
said plane surface thereof extending diagonally relative
to said adjacent edges in shearing relation with said diag~
onal plane surfaces of the other pair of cutting elements,
means for detachably securing said cutting elements selec—
member having a pair of rectangularly related plane sur
faces each parallel to said direction of movement and in
shearing relation with one of the cutting surfaces of the
third pair of cutting elements.
tively on said one die member, and means for detachably
securing the die blocks on said other die member selec
10. In a press for cutting off corner portions of a sheet
tively in said respective positions thereof, whereby prelim
and cutting a substantially rectangular opening in the
inary to formation of rebent ?anges on adjacent edges of
sheet in the forming of a panel from the sheet and hav
the sheet the ?rst cutting element pair may cooperate with 10 ing complementary die members relatively movable op
said one die block to shear said square corner portion
posedly into engaged relation to effect said cutting of a
from the sheet, and prior to formation of upstanding
sheet disposed therebetween, ?rst shear die means on a
?anges on said edges said other cutting element pair may
?rst of said die members corresponding in outline to the
cooperate with the other die block to shear said triangular
opening to be cut, second shear die means on the second
corner portion from the sheet.
15 of said die members, said ?rst and second shear die means
being arranged for close-?tting telescoping movement to
8. Structure substantially as de?ned in claim 7, in which
each of the cutting elements of said one pair is spaced
cut said sheet upon movement of the die members rela
from said plane surface of the other cutting element
tively toward each other, two pairs of cutting elements
thereof, and including a shear strip having a plane face
selectively mountable on one of the die members in posi
flush with the plane surface of one of said cutting elements 20 tion to have disposed adjacent thereto a sheet corner de
of the one pair and of appreciably less extent in said direc~
?ned by adjacent edges of the sheet, one of said pairs
tion of movement and extending from said one element at
when mounted on the die member having the cutting ele
least to the plane of said plane surface of said other
ments presenting a pair of rectangularly related cutting
cutting element.
surfaces each parallel to the direction of movement of
9. In a press for cutting off corner portions of a sheet 25 the die members and extending in a plane parallel to the
and cutting a substantially rectangular opening in the sheet
in the forming of a panel from the sheet and having com
plementary die members relatively movable opposedly
of said surfaces de?ning on the sheet a square corner por
into engaged relation to effect said cutting of a sheet dis
tion, the other pair of cutting elements when mounted on
line of one of said adjacent edges of the sheet and inter
secting the line of the other edge, the projected planes
posed therebetween, ?rst shear die means on a ?rst of 30 the die member having the cutting elements presenting a
pair of aligned cutting surfaces extending diagonally rela
said die members corresponding in outline to the opening
to be cut, second shear die means on the second of said die
tive to said sheet corner, the projected planes of said
members, said ?rst and second shear die means being ar
diagonal cutting surfaces de?ning on the sheet a triangu
ranged for close-?tting telescoping movement to out said
lar corner portion, a pair of cutting die blocks selectively
sheet upon movement of the die members relatively to 35 securable on the other of said die members, one of said
ward each other, two pairs of cutting elements selectively
die blocks having a pair of rectangularly related plane
surfaces each parallel to said direction of die member
mountable on one of the die members in position to have
disposed adjacent thereto a sheet corner de?ned by ad
movement and extending transversely of one of said ad
jacent edges of the sheet, one of said pairs when mounted
jacent sheet edges, the other of said die blocks having a
on the die member having the cutting elements presenting 40 plane surface parallel to said direction of movement and
a pair of rectangular related cutting surfaces each parallel
extending diagonally relative to said adjacent sheet edges,
to the direction of movement of the die members and
said one die block being detachably securable on said
extending in a plane parallel to the line of one of said
other die member in position with said plane surfaces
adjacent edges of the sheet and intersecting the line of the
thereof respectively in shearing relation with the plane
other edge, the projected planes of said surfaces de?ning as L) surfaces of said one pair of cutting elements, said other
on the sheet a square corner portion, the other pair of cut
die block being detachably securable on the other die
ting elements when mounted on the die member having
member with said plane surface thereof in shearing rela~
the cutting elements presenting a pair of aligned cutting
tion with said diagonal plane surfaces of the other pair
surfaces extending diagonally relative to said sheet corner,
of cutting elements, means for detachably securing said
the projected planes of said diagonal cutting surfaces de 50 cutting elements selectively on said one die member, and
?ning on the sheet a triangular corner portion, a pair of
means for detachably securing said die blocks selectively
cutting die blocks selectively securable on the other of
on said other die member.
said die members, one of said die blocks having a pair of
11. Structure substantially as de?ned in claim 9, in
rectangularly related plane surfaces each parallel to said
which at least one of the cutting elements of said one
direction of die member movement and extending trans
pair and third pair is spaced from said plane surface of
versely of one of said adjacent sheet edges, the other of
the other die element of the pair and includes a shear
said die blocks having a plane surface parallel to said
strip having a plane face ?ush with the plane surface of
direction of movement and extending diagonally relative
said one cutting element and of appreciably less extent
to said adjacent sheet edges, said one die block being
in said direction of movement and extending from said
detachably securable on said other ‘die member in position 60 one element at least to the plane of the plane surface of
with said plane surfaces thereof respectively in shearing
the other cutting element of the pair.
relation with the cutting surfaces of said one pair of
12. In a press having complemental die members rela
cutting elements, said other die block being detachably
tively movable opposedly into engaged relation for bend
securable on the other die member with said plane surface
ing a marginal portion of a metal sheet to provide there
thereof in shearing relation with said diagonal cutting sur 65 on either an upstanding ?ange of predetermined height
faces of the other pair of cutting elements, means for
or a rebent flange having an upstanding portion of sub
detachably securing said cutting elements selectively on
stantially said height and an outturned portion extend
said one die member, means for detachably securing said
ing from said upstanding portion a distance substantially
die ‘blocks selectively on said other die member, a third
equal to said height, ?rst die means on one of said die
pair of cutting elements secured on said one die member 70 members having substantially parallel to the direction of
presenting a pair of rectangularly related cutting surfaces
said relative movement a plane surface of an extent in
parallel to said direction of movement and each extend
said direction at least equal to said height, second die
mg in a plane parallel to the line of one edge of the
means on the other die member having a ?rst plane face
sheet and intersecting the line of an intersecting edge, the
parallel to the plane of said plane surface and spaced
projected planes of said cutting surfaces of said third pair 75 therefrom by substantially the thickness of said sheet and
l
3,037,546
21
also having a second plane face normal to said ?rst face,
said second die means having therein a dihedral rabbet
de?ned by a pair of rectangularly related surfaces each
extending substantially parallel to one of said faces and
having a width substantially equal to said height, a die
bar of substantially square cross section each side of
which has a width substantially equal to said height, said
bar being selectively mounted on said second die means
in said rabbet with two adjacent sides thereof substan
22
mined height and when mounted on said plane surface
cooperating with said rabbet-de?ning surfaces upon said
die member movement to bend the portion of the sheet
adjacent said edge portion to a position substantially
normal to the edge portion and to the body of the sheet
to provide the upstanding portion of a rebent ?ange hav
ing said edge portion as the outturned portion.
14. In a press for cutting a sub-stantially rectangular
opening in a metal sheet and having complementary op
tially ?ush with the corresponding faces of said second 10 posed die carriers relatively movable perpendicularly of
die means or on said ?rst die means projecting from the
each other into engaged relation to effect said cutting, rec
plane surface with one side substantially normal thereto
and a side adjacent said one side parallel to the plane
tangular ?rst die means on one of said die carriers corre
surface and spaced by substantially the thickness of said
sponding in outline to the opening to be cut and ‘afford
ing support for a metal sheet inwardly from said outline,
sheet from the plane of the rabbet surface parallel to 15 and second die means on the other of said die carriers
rectangularly arranged to receive therewithin in close-?t
ting slidable relation said ?rst die means whereby to out
tachably mounting said bar selectively on one of said die
said sheet upon relative engaging movement of the die
means, and means on at least one of said ?rst and second
carriers with said sheet therebetween, said second die
die means for supporting therebetween in a plane sub
stantially normal to the planes of said plane surface and 20 means comprising four cutting elements each extending
along one side of a rectangle corresponding to a side of
said ?rst face a metal sheet edge portion which measured
the opening, each of said elements having a slightly
from said plane surface to the adjacent sheet edge has a
curved cutting edge for cutting through the sheet with a
width substantially equal to said height, said bar when
progressive shearing action to de?ne one side of the open
mounted in said rabbet cooperating with said plane sur
face upon said die member movement to bend said edge 25 ing.
15. In a press for cutting a substantially rectangular
portion into an upstanding ?ange of said predetermined
opening in a metal sheet and having complementary op
height and when mounted on said plane surface cooperat
posed die carriers relatively movable perpendicularly of
ing with said rabbet-de?ning surfaces upon said die
each other into engaged relation to effect said cutting,
member movement to bend the portion of the sheet ad
rectangular ?rst die means on one of said die carriers cor
jacent said edge portion to a position substantially nor
responding in outline to the opening to be cut and afford
mal to the edge portion and to the body of the sheet to
ing support for a metal sheet inwardly from said outline,
provide the upstanding portion of a rebent ?ange having
rectangular second die means on the other of said die
said edge portion as the outturned portion.
carriers; said ?rst and second die means being arranged
13. In a press having complemental die members rela
tively movable opposedly into engaged relation for bend 35 to telescope in close-?tting slidable relation whereby to
out said sheet upon relative engaging movement of the
ing a marginal portion of a metal sheet to provide there
die carriers with said sheet therebetween, at least one of
on either an upstanding ?ange of predetermined height
said die means comprising four cutting elements each ex
or a rebent ?ange having an upstanding portion of sub
tending along one side of a rectangle corresponding to a
stantially said height and an outturned portion extending
from said upstanding portion a distance substantially equal 40 side of the opening, and at least one of said elements
said ?rst face of the second die means, means for de
to said height, ?rst die means on one of said die members
having a slightly curved cutting edge for cutting through
having substantially parallel to the direction of said rela
the sheet with a progressive shearing action to de?ne one
side of the opening.
16. In a press having complemental die members rela
the other die member having a plane face parallel to 45 tively movable opposedly into engaged relation for bend
ing portions of adjacent edges of a rectangular metal sheet
the plane of said plane surface and spaced therefrom by
to provide thereon either upstanding ?anges having in
substantially the thickness of said sheet, a dihedral rabbet
clined angled ends or rebent ?anges each having an up
de?ned in said second die means by a pair of rectangu
standing portion and an outturned portion, means for
larly related surfaces with one thereof extending sub
tive movement a plane surface of an extent in said di
rection at least equal to said height, second die means on
stantially parallel to said face and each having a width 50 cutting off a corner of the sheet between said adjacent
substantially equal to said height, a die bar of a cross
section providing two adjacent sides rectangularly related
edges preliminarily to the forming of said ?anges, said
means comprising two pairs of die elements selectively
disposable on one of said die members positioned to have
said sheet corner disposed adjacent thereto upon insertion
a third side parallel to one of said two sides, said bar
being selectively mounted either on said second die means 55 of said sheet in the press, one of said pairs when dis
posed on said one die member having the die elements
in said rabbet with said two adjacent sides thereof en
and corresponding in width to said rabbet surfaces and
gaging on the rabbet surfaces and said third side sub—
stantially flush With said plane face of said second die
means or on said ?rst die means projecting from the
plane surface with one of said two adjacent sides en
gaging thereon and the other substantially normal thereto
and said third side disposed parallel to the plane surface
and spaced by substantially the thickness of said sheet
from the plane of the rabbet surface parallel to said plane
thereof presenting a pair of rectangularly related plane
surfaces each parallel to the direction of movement of the
die members and extending in a plane parallel to the line
of one of said adjacent edges and intersecting ‘the line of
the other adjacent edge, the projected planes of said plane
surfaces de?ning on the sheet a rectangular corner por
tion of an extent inward ‘from each of said edges substan
tially equal to the combined height and width of said up
face of the second die means, means for detachably 65 standing and outturned portions respectively of said re
bent flange, the other of said pairs of die elements when
mounting said bar selectively on one of said die means,
‘isposed on said one die member having the die elements
and means on at least one of said ?rst and second die
thereof presenting a pair of aligned plane surfaces extend
means for supporting therebetween in a plane substan
ing diagonally relative to said adjacent sheet edges, the
tially normal to the planes of said plane surface and
said ?rst face a metal sheet edge portion which measured 70 projected planes of said ‘diagonal plane surfaces de?ning
on the sheet a triangular corner portion of an extent along
from said plane surface to the adjacent sheet edge has
each of said edges substantially equal to twice the height
a Width substantially equal to said height, said die bar
of said upstanding ?anges, a die block on the other of
when mounted in said rabbet cooperating with said plane
said die members having a pair of rectangularly extending
surface upon said die member movement to bend said
edge portion into an upstanding ?ange of said predeter 75 plane surfaces each parallel to said direction of die mem
3,037,5ae
23
die member selectively either in one position with said
surfaces of said one die element pair may cooperate with
said surfaces of said one die block to shear said square
corner portion from the sheet upon said relative die
plane surfaces thereof respectively in shearing relation
member movement, and preliminary to formation of up
with the plane surfaces of said one pair of die elements
standing ?anges on adjacent sheet edges said diagonal
or in a second position with one of said plane surfaces
surfaces of said other die element pair may cooperate
with said diagonally extending surface of said other die
block to shear said triangular corner portion from the
her movement and of at least said corner portion extent,
said die block being detachably securable on said other
thereof extending diagonally relative to said adjacent
sheet edges in shearing relation with said diagonal plane
sheet upon said relative die member movement.
surfaces of the die elements of said other pair, means
18. Structure substantially as de?ned in claim 17, in
for detachably securing said die elements on said one die 10
which each of said die elements of said one pair is spaced
member, and means for detachably securing the die block
from said plane surface of the other die element of the
on said other die member selectively in one of said posi
pair, and including a shear strip associated with each of
tions, whereby preliminary to formation of rebent ?anges
said die elements of appreciably less extent in said direc
on adjacent edges of a sheet said surfaces of said one die
element pair may cooperate with said die block surfaces 15 tion of movement than said die elements and having a
plane face ?ush with said plane surface of the associated
to shear said rectangular corner portion from the sheet
die element and extending from the associated die element
upon said relative die member movement with the die
to the plane of said plane surface of the other die element.
block secured in said ?rst position, and preliminary to
19. In a press for forming sheets into assemblable
formation of upstanding ?anges on adjacent sheet edges
said surfaces of said other die element pair may coop 20 panels of two differing complemental shapes each in
cluding an eccentrically located aperture and requiring
erate with said one diagonally extending die block sur
relative reversal for assembly thereof and register of the
face to shear said triangular corner portion from the sheet
apertures, die structure for forming both shapes of
upon said relative die member movement with said die
panels including alternative die parts for selective incor
block secured in said second position thereof.
17. In a press having complemental die members rela N) Ur poration therein in accordancerzith the shape of panel
tively movable opposedly into engaged relation for bend
ing portions of adjacent edges of a rectangular metal
sheet to provide thereon either upstanding ?anges having
> to be formed, said die structure comprising a pair of die
carriers relatively movable toward each other into en
gaged relation to form a sheet therebetween into a panel,
?rst shear die means on one of said carriers located ec
inclined angled ends or rebent ?anges each having an up
standing portion and an outturned portion, means for cut 30 centrically of the panel and de?ning an outline corre
sponding to that of 'an aperture to be cut in the panel,
ting off a corner of the sheet between said adjacent edges
second shear die means on the other carrier, said ?rst
preliminarily to the forming of said ?anges, said means
and second shear die means being arranged for close
comprising two pairs of die elements selectively disposa
?tting telescoping cooperation to out said aperture in
ble on one of said die members positioned to have said
sheet corner disposed adjacent thereto upon insertion of I the panel upon movement of the die carriers into engaged
relation, a panel ejector member movable between and
said sheet in the press, one of said pairs when disposed
in the same plane as said die carriers for engagement
on said one die member presenting a pair of rectangular
with a formed panel to support such panel clear of the
ly related plane surfaces each parallel to the direction of
die carriers, said ejector member corresponding generally
movement of the die members and extending in a plane
in dimensions and shape to the panel and having an open
parallel to the line of one of said adjacent edges and in
tersecting the line of the other adjacent edge, the pro
jected planes of said plane surfaces de?ning on the sheet
a square corner portion of an extent inward from each
of said edges substantially equal to the combined height
and width of said upstanding and outturned portions re
spectively of said rebent ?ange, the other of said pairs
of die elements when disposed on said one die member
presenting a pair of aligned plane surfaces extending
diagonally relative to said adjacent sheet edges, the pro
jected planes of said diagonal plane surfaces de?ning on
ing located eccentrically thereof accommodating the shear
die means therein, means for guiding the ejector member
for movement in said plane including elongated means
extending substantially normal to one face of the ejector
member, means for detachably securing said elongated
means selectively to either face of the ejector member
to permit face-for-face reversal thereof for reversing
the location of said opening relative to the center of the
ejector member, and means removably attaching said
shear die means to the respective die carriers within the
the sheet a triangular corner portion of an extent along
outline of said opening selectively at said eccentric loca
each of said edges substantially equal to twice the height
of said upstanding ?anges, a pair of die blocks selective
tion or said reversed location thereof.
20. In a press for forming two assemblable panels
of differing complemental shapes each including an eccen
trically located formation and requiring relative reversal
for assembly thereof and registration of said formation,
surfaces each parallel to said direction of die member
die structure for forming both shapes of panels includ
movement and of at least said corner portion extent, said
ing alternative die parts for selective incorporation there
one die block being detachably securable on said other
in in accordance with the shape of panel to be formed,
die member in a position with said plane surfaces there
of respectively in shearing relation with the rectanguiarly 60 said die structure comprising a pair of die carriers rela
tively movable toward each other into engaged relation
related plane surfaces of said one pair of die elements,
to form a panel therebetween, ?rst and second die means
the other of said die blocks having a plane surface paral
respectively on one and the other of said carriers located
lel to said direction of movement and extending diagonal
eccentrically of the panel and arranged for telescoping
ly relative to said adjacent edges with the plane thereof
de?ning with said edges a triangle corresponding to said 65 cooperation to de?ne said formation in the panel upon
movement of the die carriers into engaged relation, a
triangular corner portion, said other die block being de
panel ejector member movable between and in the same
tachably securable on said other die member in a posi
plane as said die carriers for engagement with a formed
tion with said diagonally extending surface thereof dis
panel to support such panel ‘clear of the die carriers, said
posed in shearing relation with said diagonal plane sur
ejector member corresponding generally in dimensions
faces of the die elements of said other pair, means for
and shape to the panel and having an opening located
detachably securing said die elements on said one die
eccentrically thereof accommodating said die means there~
member, and means for detachably securing the die
through, means for guiding the ejector member for move
blocks on said other die member selectively in the re
ment in said plane including elongated means extending
spective positions thereof, whereby preliminary to forma
tion of rebent ?anges on adjacent edges of a sheet said 75 substantially normal to one face of the ejector member,
ly securable on the other of said die members, one of said
die blocks having a pair of rectangularly extending plane
3,037,546
25
26
means for detachably securing said elongated means se
References Cited in the ?le of this patent
lectively to either face of the ejector member to permit
face-for-face reversal thereof for reversing the location
of said opening relative to the center of the ejector mem
her, and means removably attaching said die means to 5
the respective ‘die carriers Within the outline of said
formation selectively at said eccentric location or said
reversed location thereof.
UNITED STATES PATENTS
134,726
1,780,433
2,289,584
2,754,906
Bowers ______________ __ Ian. 14,
McGregor ____________ __ Nov. 4,
MacMillin et a] ________ __ July 14,
Gundlach ____________ __ July 17,
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