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Патент USA US3037483

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June 5, 1962
L. v. WHISTLER, sR., ETAL
3,03 7,473
ADJUSTABLE DIE APPARATUS
Filed March 4, 1959
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Lawrence V. Whistler, Sr. 8 '
F|G _2 . Lawrence V. Wh istler, Jr.
BY
ATTORNEYS
June 5, 1962
L. v. WHISTLER, sR., EI‘AL
3,037,473
ADJUSTABLE DIE APPARATUS
Filed March 4, 1959
4 Sheets-Sheet 2
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INVENTORS
Lawrence V. Whistler, 8:18
FIG'IO' Lawrence V. Whistlegdr.
BYJ
ATTORNEYS
June 5, 1962
1.. v. WHISTLER, 5a., ETAL
3,037,473
ADJUSTABLE DIE APPARATUS
Filed March 4, 1959
4 Sheets-Sheet 3
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INVENTORS
Lawrence V. Whistler, Sr.8
Lawrence V. Whistler, Jr.
ATTORNEY-5
June 5, '1962
1.. v. WHISTLER, sR., ETAL
3,037,473
ADJUSTABLE DIE APPARATUS
Filed March 4, 1959
4 sheets-sheet 4
W
W
7
/
INVENTORS
Lawrence V. Whistler, Sr.8\
Lawrence V. Whistler, Jr.
ATTORNEYS
C
United States Pate
is
3,337,473
Patented June 5, 1962
2
1
upper surface of the adapter members forming the upper
3,037,473
ADJUSTABLE DIE APPARATUS
Lawrence V. Whistler, Sr., 259 Doncaster Road, and
Lawrence V. Whistler, Jr., 251 Doncaster Road, both of
Kenmore, N.Y.
Filed Mar. 4, 1959, Ser. No. 797,075
15 Claims. (Cl. 113-49)
pressure pad are elongated and extend obliquely to the
side portions and end portions thereof, thereby permit
ting relative movement of the adapters with respect to
one another and with respect to the punch shoe in order
to obtain the desired degree of adjustment.
Openings are also provided in the lower surface of the
adapters forming the upper pressure pad, and bolts ex-'
tend through these openings for retaining a die ring se:
The present invention relates to a new and novel ad
justable die apparatus, and more particularly to a die 10 cured to the under surface of the upper pressure pad
apparatus which is especially adapted to be adjusted to
vary the shape and size thereof.
The present invention relates to die operations such as
drawing, trimming, flanging, blanking, and hole punching
adapters.
Openings are also provided in the upper surface of the
adapters forming the lower pressure pad, and bolts extend
through these openings for securing a pressure ring to the
operations, and is especially adapted for use in drawing, 15 upper surface of the lower pressure pad.
At this time, it is pointed out that the terms “die ring’
trimming, and blanking and is described in connection
and “pressure ring” as employed herein are intended to
with such operations, although the basic principles of the
denote generically the ring which is secured to the under
invention may be employed with other similar die opera
surface of the upper pressure pad and the ring which is
ations. The cost of construction of draw dies and the
r
like is a costly item, and has long been the source of ex
cessive cost when it is necessary to change the size or
the shape of dies employed quite often or when small
production runs are to be made. It has long been a com
mon practice to construct individual dies for each par
secured to the upper surface of the lower pressure pad
respectively, regardless of whether such rings are em
ployed in a drawing operation, a trimming operation, or
a blanking operation and the like.
a
The lower pressure pad is mounted upon resiliently
ticular job, and this is true even where similarly shaped 25 supported pressure pins and is normally supported above
the upper surface of a die shoe which is spaced below the
objects are to be made wherein the size of the objects
punch shoe in a conventional manner. The adapters of
may be slightly different.
the upper pressure pad as well as the lower pressure pad
It is accordingly evident that it is highly desirable to
de?ne central openings therein, and the die ring and pres
provide an arrangement wherein it is not necessary to con
sure ring also de?ne central openings. A knock-out
struct a completely new die for each particular size or
means is mounted within the central opening de?ned by
shape to be made with the die apparatus. Accordingly,
the upper pressure pad, and a support means is mounted
the present invention is speci?cally designed with this in
mind such that only a relatively inexpensive die ring and
within the opening de?ned in the lower pressure pad,
pressure ring need be made for each particular job, the
some sort of a forming means being mounted on the
remaining components of the apparatus being adjustable
upper end of the support means, this forming means
generically indicating a member such as a ‘draw punch or
and interchangeable such that they can be used over and
over again when performing dieing operations to produce
objects of different sizes and shapes.
A particular advantage of the present invention is the
a cutting punch.
I
A further modi?cation of the invention is the provi
sion of a substantially annular boss which may be pro
40 vided about the central opening in the die ring, this boss
fact that the construction is such that it permits the draw
extending upwardly within the central opening de?ned by
ing or trimming and the like of objects which may be
the upper pressure pad adapters and being of particular
round, oval, square, rectangular or various other special
utility when drawing thin-walled stampings so as to pre
‘shapes, thereby enabling the structure to be extremely
vent the stamping from bulging at the center of the side
?exible in its use. The objects of the present invention
are accomplished by the provision of a number of novel 45 wall and sticking in the die when it is desired to knock
out the workpiece when the punch shoe is on the up
adapters which are employed for forming an upper and
arlower pressure pad.
_
Each of the novel adapters of the present invention
comprises a member including substantially ?at end and
side portions, the side portion having an elongated slot
formed therethrough, and the end portion having open
ings formed therein. The upper pressure pad and the
lower pressure pad are each constructed of a plurality of
such adapters, preferably four in number, the adapters
stroke.
.
-
An object of the present invention is to provide a new
and novel adjustable die apparatus which eliminates the
necessity of providing a completely new die for each
individual job. _
>
Another object is the provision of an adjustable die
apparatus which is especially adapted for dieing opera
tions of varying size and shape.
being identical with one another and interchangeable, if 55 A further object of the invention is to provide an ad
justable die apparatus which is adaptable for use in draw
desired. The adapters of each pressure pad are disposed
ing, trimming, blanking and similar operations.
such that the end portions thereof are in abutting rela
Yet another object of- the invention is to provide an
tionship with the side portions of adjacent adapters, bolts
adjustable die apparatus incorporating an automatic
extending through the slots in the side portions and into
the openings in the end portions for rigidly securing the 60 knock-out mechanism and further to provide an adjust
a'ble die apparatus which can be quickly. and easily as
adapters in ?xed relationship to one another. The elon
gated slots in the side portions‘permit relative adjustment
of the adapters to de?ne varying sized openings in the
center thereof, and in addition, to provide varying shapes.
sembled or disassembled.
‘
~
A still further object of the invention is to provide an
adjustable die apparatus which is simple and inexpensive
The adapters comprising the upper pressure pad are 65 in construction, and yet which is ef?cient and reliable in
operation.
.
additionally provided with slots in the upper surface there
Other objects and many attendant advantages of the
of, the under surface of the associated punch shoe being
invention will become more apparent when considered in
‘provided with T-shaped slots whereby T-bolts may be in
connection with the speci?cation and accompanying draw
serted through the aligned slots in the adapters and punch
shoe for supporting the upper pressure pad from the punch 70 ings, ‘wherein:
FIG. 1 is a plan view of the apparatus with the punch
shoe. In this connection, an important feature of the
present invention is the fact that the slots formed in the
shoe removed;
3,037,473
4
3
tional pair of elongated slots 55 and 56 through the wall
45 opposite wall 46. It should be understood that all the
adapter elements may be provided with slots 55 and 56,
or the adapters comprising the lower pressure pad may
eliminate the slots.
Elongated slots 55 and 56 have a particular relation
ship to the side and end portions of the adapters, and
FIG. 2 is a sectional view of the apparatus taken along
line 2~—2 of FIG. 1 looking in the direction of the arrows;
FIG. 3 is a sectional view of the apparatus taken along
line 3—~3 of FIG. 1 looking in the direction of the arrows;
FIG. 4 is a bottom view of a punch shoe;
FIG. 5 is a sectional view illustrating the guiding con
nection between the punch shoe and the die shoe;
FIG. 6 is a perspective view of one of the adapter ele
ments of the present invention;
FIG. 7 is a side view of the upper pressure pad as
sembly;
as seen most clearly in FIG. 1, for example, slots 55 and
56 of each adapter extend obliquely to the side and end
10
FIG. 8 is an enlarged view of a modi?ed form of the
portions thereof. A recessed portion 60 is provided
about the upper portion of each of slots 55 and 56 which
permits the enlarged head of the T-bolt to be rotated so
that the T-bolts can be inserted Within the T-slots in the
invention;
punch assembly after the upper pressure pad has been
FIG. 9 illustrates the manner of forming a square open
ing within the adapters;
moved into contact with the lower surface of the punch
shoe. As seen in FIGS. 2 and 3, T-bolts indicated by
reference numeral 61 are inserted in operative position
with the enlarged heads 62 thereof within the T-slots in
the punch shoe 20, and with bolts 63 threaded on the
lower ends thereof for maintaining the upper pressure
FIG. 10 illustrates a modi?cation illustrating the ap
paratus arranged for a trimming operation; and
FIG. 11 illustrates a modi?cation arranged for a blank
ing operation.
Referring now to the drawings, wherein like reference
characters designate corresponding parts throughout the
pad in operative position relative to the punch shoe.
several views, FIGS. 1-3 illustrate the general overall ar
rangement including a punch shoe 20 which is normally
raised and lowered by the ram of the press, and a die shoe
21 which may be ?xed to the bed of the press. An upper
Referring again to FIG. 1, it is seen that in assembled
position, the adapters 40 are disposed such that the end
portions 41 thereof are in abutting relationship with the
side portions 42 of an adjacent adapter, a pair of bolts
65 extending through the slots 53 in the side portions of
the adapters and threaded into the openings 48 and 49
in the end portion of an adjacent adapter.
Laterally extending projections 51 are formed at the
ends of each of the adapters, these laterally extending
-
pressure pad indicated generally by reference numeral 22
is supported from the under surface of the punch shoe,
and a lower pressure pad indicated generally by reference
numeral 23 is supported upon a plurality of pressure pins
24 which are resiliently mounted in a conventional man
ner for cushioning the lower pressure pad. As seen most
clearly in FIG. 4, the under surface 30 of the punch shoe
20 is provided with a plurality of T-slots indicated by
reference numerals 31 and 32 respectively, T-slots 31
being similar to one another and T-slots 32 being similar
to one another. Sockets indicated by reference numeral
projections having arcuate surfaces 52, and as seen espe
cially in FIG. 1, when the adapters are in assembled
position, they cooperate to de?ne a substantially circular
opening which, of course, is particularly suited for sup
i porting a draw die ring having a circular opening for
drawing a round con?guration.
The disposition of the elongated slots 55 and 56 per
chining the T-slots since this enables the T-slots to be
mits the adapter elements to be adjusted in the direction
made in the most effective and inexpensive manner. It
indicated by the arrows A-—-A in FIG. 1 and it is evi
is noted that each of the T-slots is substantially parallel 40 dent that these adapter elements may be so adjusted
to the adjacent side edge of the punch shoe, T-slots 31
relative to one another and to the die shoe as to provide
extending all the way to the edge portions of the punch
varying sized circular or oval shapes. In order to pre
shoe, and T-slots 32 being of substantially less length than
vent rotation of the upper pressure pad during operation,
slots 31, a central opening 35 is provided through the
a stop means indicated generally by reference numeral
central portion of the punch shoe for a purpose herein
70 is provided, said stop means having a notched end
after described.
portion 71 receiving a corner of one of the adapter mem
33 are ‘cast in the die shoe to provide clearance for ma
A pair of openings 36 are provided through the punch
shoe and as seen most clearly in FIG. 5, a bushing 37 is
pressed in each of these openings. A pair of guide posts
38 are pressed into a pair of suitable openings 39 formed .
in die shoe 21 and extend upwardly and slide within the
hollow boss formed in the guide bushings 37 for guiding
the movement of the die shoe relative to the punch shoe
during operation of the apparatus.
Referring now to FIG. 6 of the drawings, one of the
adjustable adapters is illustrated and indicated generally
by reference numeral 40, this particular adapter being
especially adapted to form circular or oval openings there
with. Adapter element 40 as shown also in FIGS. 1 and
7, includes a substantially ?atend portion 41 and a sub
stantially ?at side portion 42 which extend approximately
normally to one another. A side wall 43 is joined with
an end wall 44, and top walls 45 and 46 form ?anges
which project laterally from the side and end walls to
de?ne a recess or groove 47 therebetween.
An enlon
gated slot 53 is formed through side wall 43, and a pair
of openings 48 and 49 are formed in the end wall 44,
openings 48 and 49 being threaded for receiving corre
spondingly threaded bolts. An opening 50 is provided
through the lower wall 46 of the element 40 shown in 70
FIG. 6, which is also adapted to receive a bolt as here
inafter described. The element 40 as de?ned up to this
point may be employed for forming the lower pressure
pad of the apparatus, but for the purpose of providing
an upper pressure pad, it is necessary to provide an addi
bers, the stop means being provided with a slotted mem
ber 72 within which an adjustable bolt 73 is provided,
the bolt being threaded into a suitable opening provided
in the punch shoe for adjusting the position of the stop
member relative to the punch shoe. The engagement
between the adapter and the stop member effectively pre
vents undesired rotation of the upper pressure pad dur
mg operation.
A bolt 75 extends through the opening 50 in the lower
wall 46 of each of the adapters, and is threaded into
correspondingly threaded openings 76 provided in a die
ring 80 which may be constructed in accordance with
known die procedures and provided with a central open
ing 81 of the desired shape and con?guration for the
particular object to be drawn. In this case, die ring 80
is preferably formed as an integral ring. A knock-out
member 85 is slidably positioned within the central open
mg provided within the upper pressure pad, knockout
85 having a size dependent on that of the member to
be drawn. A knock-out rod 86 extends slidably through
the central opening 35 in the central portion of punch
shoe 20, the lower end of rod 86 being threaded and
threadedly received within a correspondingly threaded
opening 87 formed in knock-out 85. A peripherally re
cessed portion 88 is provided at the lower portion of
knock-out 85 and is adapted to be received within the
central opening in the die ring 80. The knock-out
mechanism operates in a well-known manner.
It is evi
dent that upon the upstroke of the punch shoe 20, the
3,037,473
6
knock-out member 85 will engage the knock-out rod and
push the drawn member out of the die ring 80. The
lower pressure pad 23 as discussed previously is sub
FIG. 9 are especially adapted for drawing square or
rectangilar objects. In FIG. 9, the adapters 40' are shown
secured to one another so as ‘to draw ‘a substantially
stantially identical with the upper pressure pad 22, the
lower pressure pad including a plurality of adapters 40
square con?guration in a workpiece indicated by reference
which are rigidly secured to one another, as discussed
‘adjusted to draw rectangular shaped objects by proper rad
in connection with the upper pressure pad, by a plurality
of bolts 65’ extending through the elongated slots in the
side portions of the adapters and being threaded within
justment of ‘the adapters 4G’ with respect to one another.
numeral 110. It is evident that ‘adapters 40’ may ‘also be
Referring now to FIG. 10 of the drawings, a modi?ca
tion is illustrated which is adapted to perform a trimming
the openings in the end portions of the adjacent adapters. 10 operation in contrast to the drawing operation performed
by the apparatus shown in FIGS. l~3 for example. The
Openings 50’ provided in the upper wall 46' of the lower
apparatus shown in FIG. 10 is substantially the same as
adapters have bolts 90 extending therethrough, the bolts
that shown in FIGS. 1-3, the punch and die shoes being
being threaded into suitable openings 91 provided in a
identical as well as the upper and lower pressure pads
pressure ring 92, the pressure ring having a central open
ing 93 therein and being preferably an integral annular 15 and the spacer member. These components have ac
cordingly been given the same reference numerals double
member.
primed. It should be understood that the adapter mem
A support member 95 has a shank portion 96 threaded
bers of the upper ‘and lower pressure pads ‘are adjusted
within a central opening 97 in the die shoe 21, and a
in the manner previously described to obtain the desired
draw punch 98 is supported on the upper end of sup
port member 95. Draw punch 98 is ?tted snugly within 20 size and shape in accordance with the workpiece which
is to be trimmed. An annular stripper ring 120 is secured
opening 93 in the pressure ring, and has an outer sur
face which corresponds with the desired drawn shape
to the upper surface of the lower pressure pad by bolts
of the workpiece indicated by reference numeral 100.
90", and a tool steel hardened cutting punch 121 is se
An air vent passage 101 opens at the upper surface of
cured to the upper end of the spacer 95” by bolts (not
the support 95, and a laterally extending passage 102 25 shown) or other suitable conventional means. The cut
ting punch is provided with a gauge plug 122 on the
provides communication with the outer surface of the
support member. Passage 101 communicates with a
upper surface thereof for properly positioning the work
passage 103 formed longitudinally through the draw
piece indicated by reference numeral 123. A tool steel
punch for venting air from the under surface of the
hardened die cutting ring 125 is secured to the lower sur
workpiece during operation.
30 face of the upper pressure pad by bolts 75", this die
cutting ring cooperating with the cutting punch to sever
It is apparent that the upper and lower pressure pads
an annular portion indicated by reference numeral 126
are each composed of a plurality of adapter members,
the position of which may be selectively adjusted ‘for vary
from the workpiece 123 during operation of the apparatus.
ing the size and shape of the pressure pads thereby pro
In this modi?cation, a knockout 130 is provided with a
viding a pressure pad of su?icient mass and rigidity to
threaded ‘opening 131 in the upper surface thereof, this
prevent undesired ?exibility or distortion when perform
opening receiving the lower threaded end of a knock-out
ing the dieing operation. The die ring and pressure ring
rod 132 which is slidably received within the central open
are ?xed respectively to the under surface of the upper
ing 35” in the punch shoe 20". Knock~out 130 is pro
pressure pad and the upper surface of the lower pres
vided with a central recess 135 which receives the work
sure pad and cooperate with one another to perform 40 piece 123, and an ‘annular groove 136 is formed around
the dieing operation in connection with the draw punch
the lower outer periphery thereof such that the radially
inward surface of groove 136 is slidably received within
mounted at the center of the apparatus. The knock
out mechanism serves to positively remove the workpiece
the central opening formed in the die cutting ring 125.
from the device after completion of the dieing operation.
The knock-out mechanism operates in a conventional
Referring now to FIG. 8, there is shown a modi?cation 45 manner for removing the workpiece from the die cutting
wherein a modi?ed die ring 80' is employed with the same
ring on the upstroke of the punch shoe.
' Referring now to FIG. 11 of the drawings, a modi?cae
components as shown in FIGS. 1~3, the differenoe being
that the modi?ed die ring is provided with a substantially
tion is illustrated which is particularly adapted for per
forming blanking operations. This modification is ‘again
annular boss 105 extending upwardly substantially nor
mally to the plane of the main body portion of the die
quite similar to that shown in FIGS. l-3, the punch and
die shoes as well 1as the upper and lower pressure pads
ring, boss 105 being received within the central opening
being the same, and having the same reference numerals
de?ned by the upper pressure pad adapter-s. This par
triple primed. As seen in FIG. 11, a tool steel hardened
ticular type of die ring is especially adapted for use when
cutting punch 140 is secured to the upper surface of sup—
drawing thin-walled stampings to prevent the stampings
from bulging at the center of the side wall and sticking in 55 port member 95”’ by means of bolts or the like (not
shown. A tool steel hardened die cutting ring 141 is se
the die when being knocked out of the die on the upstroke.
cured (to the lower surface of the upper pressure pad by
As mentioned previously, the remaining components of the
means of bolts ‘75"’, the die cutting ring 141 and the
apparatus shown in FIG. 8 are similar to those shown in
cutting punch 140 serving during operation to shear off
FIGS. 1-3, and have been given the same reference
an ‘annular ring 145 from a ?at workpiece indicated by
numerals primed.
reference numeral 146.
Referring now to FIG. 9 of the drawings, a further
A stripper ring 150 is secured to the upper surface of
modi?cation of the invention is illustrated, wherein a view
the lower pressure pad by means of bolts 90'”, the stripper
similar ‘to FIG. 1 illustrates ‘a modi?ed pressure pad where
in a view similar to FIG. 1 illustrates a modi?ed pressure
pad wherein each of the modi?ed adapter elements 4%)’
ring being provided with a plurality of threaded openings
151 around the central opening therein, only one of the
is constructed in a manner very similar to adapters 40
openings being illustrated in FIG. 11. An upper head 152
shown in FIG. ‘6, similar parts thereof having been given
is threaded within each of openings 151 and a lower head
153 is also threaded therein. Upper head 152 has a central
the same reference numerals primed. The distinction be
opening therein, ‘and a gauge pin 155 is slidably disposed
tween the adapter elements 40’ and adapter elements 40
is that adapters 40' are provided with a side portion ‘42' 70 within this opening, head 156 being provided at the lower
end of the gauge pin. A compression spring 160 is dis
which is ?at and extends in a substantial plane completely
posed between lower head 153 and the under surface of
to the end portion thereof, the lateral projections 51 of
head 156 of the gauge pin for urging the gauge pin in an
the adapters '40 being eliminated. Whereas the adapters
upward direction. 'It is accordingly evident that each of
40 shown in FIG. 6 [are particularly adapted for use in
drawing round or oval ‘objects, the adapters 40’ shown in 75 the gauge pins is resiliently urged upwardly and is adapted
3,037,473
8
to engage the upper periphery of the workpiece 146 for
adapters relative to each other and said punch shoe
accurately positioning the same in operative position dur
ing operation of the apparatus.
means.
3. Apparatus as de?ned in claim 1, wherein said ?rst
plurality of adapter members de?ne a central opening,
a knock-out means disposed within said central opening
for removing the workpiece from the die ring when the
A knock-out 160 is slidably received within the upper
pressure pad, and is provided with a peripherally re
cessed portion 161 at the lower portion thereof, the
punch shoe means is retracted from the die shoe means
radially inward surface of this recessed portion being
upon completion of operation of the apparatus.
slidably received within the central opening in die cut
4. Adjustable die apparatus comprising a punch shoe
ting ring 141. A knock-out rod 162 slidably projects
through the central opening 35"’ in the punch shoe 20"’, 10 having a plurality of slots formed in the under surface
thereof, a ?rst plurality of adjustable adapters having
the lower threaded end of rod 162 being threaded within
elongated slots formed therein, bolt means extending
a central threaded opening 163 provided in the upper
through the slots formed in said punch shoe and said
surface of the knock-out 160‘, the knockout mechanism
operating in a well-known manner.
It is apparent from the foregoing that there is pro
15
?rst adapters for securing said adapters in operative posi
tion, said adapters each including side portions and end
portions, the end portion of each adapter being in abut
vided a new and novel adjustable die apparatus which
ting relationship with a side portion of an adjacent
eliminates the necessity of forming an entirely new die
adapter along an engaging surface, said adapters being
for each particular job, and it is only necessary to con
secured to one another to provide a rigid upper pressure
struct a relatively inexpensive die ring which may be
secured to the adjustable upper pressure pad. In a simi 20 pad, each of said adapters being mounted on said punch
shoe for lateral adjustable movement on the punch shoe
lar manner, it is only necessary to provide a relatively
in a direction oblique to its engaging surface, a die ring
inexpensive pressure ring for any particular job which
secured to the under surface of said pressure pad, a die
may be secured to the adjustable lower pressure pad.
shoe disposed in spaced relationship to said punch shoe,
The apparatus is quite ?exible in that it may be quickly
a second plurality of adjustable adapters supported above
and easily assembled and disassembled, and further is
said die shoe and below said ?rst plurality of adapters,
adapted to provide varying sizes and shapes within a
said second plurality of adapters each including an end
fairly wide range. For example, dieing operations may
portion and a side portion, the end portion of each of
be performed on workpieces having round, oval, square,
said second plurality of adapters being disposed in abut
or rectangular shapes, and it will be evident to one
skilled in the art that the principles of the invention can 30 ting relationship with the side portion of an adjacent
be employed for performing die operations with various
other con?gurations. The invention contemplates draw
ing, trimming, blanking, and similar operations, a par
ticular advantage of the invention being the fact that
identical adapter elements may be employed in the upper
and lower pressure pads thereby insuring minimum cost
and maximum interchangeability. An automatic knock
out mechanism is provided, and the adjustable die ap
paratus is quite simple and inexpensive in construction,
and yet is e?‘icient and reliable in operation.
40
As this invention may be embodied in several forms
without departing from the spirit or essential character
adapter, said second plurality of adapters being secured
to one another to provide a rigid lower pressure pad, and
a pressure ring secured to the upper surface of said lower
pressure pad.
5. Adjustable die apparatus comprising a punch shoe
having a plurality of slots formed in the under surface
thereof, a ?rst plurality of adjustable adapters having
elongated slots formed therein, bolt means extending
through the slots formed in said punch shoe and said
?rst adapters for securing said adapters in operative posi
tion, said adapters each including side portions and end
portions, the end portion of each ‘adapter being in abutting
relationship with a side portion of an adjacent adapter,
said adapters being secured to one another to provide a
invention is de?ned by the appended claims, all changes 45 rigid upper pressure pad, a die ring secured to the under
surface of said pressure pad, a die shoe disposed in spaced
that fall within the metes and bounds of the claims or
relationship to said punch shoe, 2. second plurality of
that form their function as well as conjointly cooperative
adjustable adapters supported above said die shoe and
equivalents are therefore intended to be embraced by
below said ?rst plurality of adapters, said second plurality
those claims.
of adapters each including an end portion and a side
We claim:
50
istics thereof, the present embodiment is therefore illus
trative and not restrictive, and since the scope of the
1. Adjustable die apparatus comprising punch shoe
means, a ?rst plurality of adjustable adapter members
supported by said punch shoe means, said adjustable
adapter members each including a portion connected
directly to a portion of an adjacent adapter member along
an engaging surface to provide a rigid upper pressure
pad, means securing each adapter member to the punch
shoe for lateral adjustable movement on the punch shoe
in a direction oblique to its engaging surface, a one
piece die ring secured to the under surface of said upper
pressure pad, die shoe means disposed in spaced rela
tionship to said punch shoe means, a second plurality of
adjustable adapter members supported adjacent said die
shoe means, said second plurality of adjustable adapter
members each including a portion connected directly to
a portion of an adjacent adapter member to provide a
rigid lower pressure pad, and a one-piece pressure ring
secured to the upper surface of the lower pressure pad.
2. Apparatus as de?ned in claim 1, including a plural 70
ity of bolts, said ?rst plurality of adapter members hav
ing elongated slots formed therethrough, said bolts ex
tending through said slots in each of the ?rst adapter
members for securing the ?rst adapter members to said
punch shoe means and permitting adjustment of said 75
portion, the end portion of each of said second plurality
of adapters being disposed in abutting relationship with
the side portion of an adjacent adapter, said second plu
rality of adapters being secured to ‘one another to provide
a rigid lower pressure pad, and a pressure ring secured to
the upper surface of said lower pressure pad, said punch
shoe including a plurality of slots formed in the under
surface thereof, each of said ?rst plurality of adapters
having slots formed therein, bolt means extending through
aligned slots in each of said adapters and said punch shoe,
the slots in each of said adapters being disposed at an
oblique angle to the side and the end portions thereof for
permitting adjustable movement of the adapters with
respect to one another so as to vary the size of the central
opening de?ned therebetween.
6. Adjustable die apparatus comprising a punch shoe
having a plurality of slots formed in the under surface
thereof, a ?rst plurality of adjustable adapters having elon
gated slots formed therein, bolt means extending through
the slots formed in said punch shoe and said ?rst adapters
for securing said adapters in operative position, said
adapters each including side portions and end portions,
the end portion of each adapter being in abutting relation
ship with a side portion of an adjacent adapter, said
adapters being secured to one another to provide a rigid
3,037,473
10
upper pressure pad, a die ring secured to the under sur
face of said pressure pad, a die shoe disposed in spaced
relationship to said punch shoe, a second plurality of
adjustable adapters supported above said die shoe and
below said ?rst plurality of adapters, said second plurality
of adapters each including an end portion and a side por
tion, the end portion of each of said second plurality of
adapters being disposed in abutting relationship‘ with the
side portion of an adjacent adapter, said second plurality
of adapters being secured to one another to provide a
rigid lower pressure pad, and a pressure ring secured to
the upper surface of said lower pressure pad, each of
lower pressure pad, and a pressure ring secured to the up
per surface of said lower pressure pad, said second plu
rality of adapters being supported by resiliently mounted
pressure pins for cushioning the action of the apparatus
when the punch shoe is urged toward the die shoe.
10. Adjustable die apparatus comprising a punch shoe
having a plurality of slots formed in the under surface
thereof, an upper pressure pad supported from the under
surface of said punch shoe, said upper pressure pad com
10 prising a ?rst plurality of adapters, said adapters being of
identical construction and being completely interchange
able, each of said adapters including substantially ?at side
said adapter members being provided with an elongated
portions and end portions, said side portions having elon
slot formed through the side portion thereof which is
gated slots formed therein, said end portions having
in abutting relationship with an end portion of an adja 15 threaded openings formed therein, said adapters being
cent adapter, and bolt means extending through said last
mentioned elongated slot for securing adjacent adapters
to one another and permitting relative adjustment with
respect to one another.
7. Apparatus as de?ned in claim 6, wherein the end
portion of each of said adapters is provided with a plu
positioned such that the end portion of each adapter is
disposed in abutting relationship with the side portion of
an adjacent adapter, bolts extending through the slots in
said side portions and into the openings in said end por
tions for rigidly securing said adapters together, and elon
gated slots formed in said adapters and extending ob
liquely to said side portions and said end portions, bolt
means extending through said last-mentioned slots and
the slots in the under surface of said punch shoe for se
8. Adjustable die apparatus comprising a punch shoe 25 curing the upper pressure pad in operative position, said
having a plurality of slots formed in the under surface
?rst plurality of adapters de?ning a central opening there
thereof, a ?rst plurality of adjustable adapters having
between, said ?rst plurality of adapters having openings
elongated slots formed therein, bolt means extending
forming in the lower surface thereof, a die ring, bolts ex
through the slots formed in said punch shoe and said ?rst
tending through said last-mentioned openings for secur~
rality of openings receiving bolts extending through the
elongated slots in the side portions of adjacent adapters
for rigidly securing the adapters together.
adapters for securing said adapters in operative position,
said adapters each including side portions and end por
tions, the end portion of each adapter being in abutting
relationship with a side portion of an adjacent adapter,
said adapters being secured to one another to provide a
rigid upper pressure pad, a die ring secured to the under
ing said die ring to the under surface of said upper pres
sure pad, a lower pressure pad comprising a second plu
rality of identical adapters similar to said ?rst plurality
of adapters, each of said second plurality of adapters
having substanitally ?at end portions and side portions,
the end portions of each of said second plurality of
surface of said pressure pad, a die shoe disposed in spaced
adapters being disposed in abutting relationship with the
relationship to said punch shoe, a second plurality of ad
side portions of adjacent adapters, the side portions of
justable adapters supported above said die shoe and below
each of said second plurality of adapters having elon
said ?rst plurality of adapters, said second plurality of
gated slots formed therein and the end portions having
adapters each including an end portion and a side portion, 40 threaded openings formed therein, bolts extending through
the end portion of each of said second plurality of adapt
said last-mentioned elongated slots and into said last-men
ers being disposed in abutting relationship with the side
tioned openings for rigidly securing said second plurality
portion of an adjacent adapter, said second plurality of
of adapters to one another, said lower pressure pad being
adapters being secured to one another to provide a rigid
supported upon resilient pressure pins, a die shoe spaced
lower pressure pad, and a pressure ring secured to the 45 from said punch shoe, said pressure pins normally ex
upper surface of said lower pressure pad, said ?rst plu
tending above the upper surface of the die shoe for sup
rality of adapters de?ning a central opening, and said
porting said lower pressure pad in operative position,
second plurality of adapters de?ning a central opening,
openings formed in the upper surface of said second plu
said die ring and said pressure ring each having central
rality of adapters, a pressure ring, and bolts extending
openings formed therein, and forming means disposed 50 through said last-mentioned openings for securing said
within the opening de?ned in said pressure ring, support
pressure ring to the upper surface of said lower pressure
means being disposed Within the central opening de?ned
pad.
by said second plurality of adapters, said support means
11. Apparatus as de?ned in claim 10 including stop
engaging the under surfaces of said forming means and
means secured to the under surface of said punch shoe
being supported upon the upper surface of said die shoe. 55 and engaging at least one of said ?rst plurality of adapters
9. Adjustable die apparatus comprising a punch shoe
for preventing rotation of said upper pressure pad during
having a plurality of slots formed in the under surface
operation of the apparatus.
thereof, a first plurality of adjustable adapters having
12. Apparatus as de?ned in claim 10, wherein each of
elongated slots formed therein, bolt means extending
said adapters is provided with a laterally extending pro
through the slots formed in said punch shoe and said ?rst 60
jection at the end portion thereof, said projection having
adapters for securing said adapters in operative position,
an arcuate surface thereon whereby said arcuate surfaces
said adapters each including side portions and end por
de?ne a substantial portion of a central circular opening.
tions, the end portion of each adapter being in abutting re
13. Apparatus as de?ned in claim 10, wherein said ?rst
lationship with a side portion of an adjacent adapter, said
plurality of adapters de?nes a central opening therebe
adapters being secured to one another to provide a rigid
upper pressure pad, a die ring secured to the under surface
of said pressure pad, a die shoe disposed in spaced rela
65 tween, and including a knockout means disposed Within
said central opening.
14. Apparatus as de?ned in claim 10, wherein said die
tionship to said punch shoe, a second plurality of adjust
ring is provided with a cutting edge, said pressure ring
able adapters supported above said die shoe and below
said ?rst plurality of adapters, said second plurality of 70 having a central opening formed therein, and a cutting
punch supported within said last-mentioned opening for
adapters each including an end portion and a side portion,
cooperating with said die ring.
the end portion of each of said second plurality of
adapters being disposed in abutting relationship with the
15. Apparatus as de?ned in claim 10, wherein said die
ring includes a substantially annular boss extending sub
of adapters being secured to one another to provide a rigid 75 stantially normally from the plane of the main body por
side portion of an adjacent adapter, said second plurality
3,037,473
11
12
tion of the die ring, said boss de?ning a central opening
within the die ring.
References Cited in the ?le of this patent
1,778,339
1,825,067
2,009,660
UNITED STATES PATENTS
440,256
Bauer _______________ __ N0v_11,189()
1,151,625
Sonneborn __________ -1 Aug. 31, 1915
5
Rafter ______________ __ Oct. 14, 1930
Johnson ____________ __ Sept. 29, 1931
Irmis ---------------- -- July 30, 1935
2,136,308
Miller _______________ __ Nov. 8, 1938
2,779,274
Gedden ______________ __ Jen.29,1957
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