close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2121470

код для вставки
.Ème 2l, 1938.
2,121,470
. B. T; BALLARD ZET AL
MACHINE FOR `1Vî1’\NUFAC'I`URING' SIZED SHEETS OF FLATTENED EXPANDED METAL
Filed sept. 24, 1956 l
l
5 sheets-sheet lv
"miauw-0Ry '
BER/va RD ‘IT BALLARD
` NIL/.mn M. McNE/L
'
ATT'QRY
'
June 21, 1938;
2,121,470
Bjfr. BALLARD ET_AL
MACHINE FOR MANUFACTURING SIZED SHEETS OF FLATTENED EXPANDEID METAL
Filed sept. 24, 19:56
v 5 sheets-sheet 2
ow
INVENTOR
Braun» TßALuuu
WILL/An H. Melina.
BY
Ruf” H
un».
ATTokNEY y
‘
`June 21? 1938.
`
- B. T. ÉALLARD E-r AL
l ,2,121,470
MACHINE FOR MANUFAC'I’URIÍNG- SIZED SHEETS CF FLATTENED EXPANDED METAL
Filed Sept. '24, 19156
5 Sheets-Sheet 3
az. l
'54 FE‘- 3
INVENToR
|62
lôö
|55
’
«
`
n
W
-
'ATTORNEY
'
y
`
i
` June 21., 1938.`
_
B. T. BALLARD ET AL
A _ 2,121,470
MACHINE FOR MANUFACTURING SIZED SHEETS OF FLATTENED EXPANDED METAL
Filed Sept. 24, 1936
5 ASheeîiS-Shfìe’t 4
IGO
»n Ißnumo
Lun M. NCA/EIL
jm@ 2L mg.
E. T. BALLARD ET_AL
MACHINE FOR MANUFACT'URING SIZED SHEETS> OF .FLATTENED EXPANDBD METAL
________
-Patemed Janev 21, 193s
»
~ i 2,121,410
_
l _ UNITED ‘_sTATEs
_
v2,121.4'10
»
MACHINE Foa MANUFACTURING smin
EXPANDED
SHEETS . or“ FLATTENED
METAL
`Bernard T. Ballard, Warren, Ohio, William M.
McNeil, Wheaton, and Ralph H. Hurd, Hinsv-
'v
.
j.
dale, Ill., assignors to United States Gypsum
Company, Chicago, rlll., a» corporation of Illi
nois
Application September 24, 1936, Serial No. 102,320
21 Claims.
(Ci. ’ 164-34)
_ Fig. 5 is a sectional elevation Vthrough the ma
This invention relates to machines for the
manufacture of sized sheets of flattened expanded
`
metal.
chine taken on line 5-5 of Fig. 4,
Fig. 6 is a detail plan view of a portion of the
machine showing the adjustable pins adjacent
-
Flattened expanded metal is commonly made
.the shear plate,
5 by passing ordinary expanded metal through
_
Fig. 7 is a detail plan view of the machine 5
heavy rolls which tends to flatten the bonds and
showing the movable pins for supporting the sheet
- strands into'the plane of the sheet. The flattened
of ñattened expanded metal,
material is suitable for use as shelves _for refrig
_
Fig. 8 is a sectional elevation through the ma->
chine takenl on line 8-8 of Fig. 6.
10
Fig. 9 is a sectional plan view through the ma
chine taken on line 9-«9 of Fig. 3,V
Fig. 10 is a sectional elevation through a por
tion of the machine taken on line lll-_I0 of Fig. 6,
Fig. 11 is a sectional elevationthrough the ma- 15
erators, stoves, etc., when properly cut -and
lo stretched to size. The rolling and flattening
operation, however, is apt to distort the diamonds
of the expanded metal,_causing the diamonds to
be out of line. Furthermore, the rolled sheet is
apt to be-of a width or length different from that
»15 desired. If an attempt is made to shear this
chine taken on line II--II of Fig. 7,
sheet to the desired dimensions the shear cut
usually occurs at points other than through the
.
.
Fig. 12 is a sectional elevation taken on line ,
|2-I2 of Fig. '7, and
Fig. 13 is a perspective view of a shelf made
through the use ~of our improved machine.
20
Referring to. the drawings by numerals, the
machine comprises main horizontal frame mem-_
bers 20 and 2l which are supported upon suitable
legs or standards 22. Upright frame members
23 and 24_serve to vsupport an electric motor 25 25
center of the bonds, so that jagged points remain
adjacent the shear cut which are a menace to the
20 hands of the >workmen handling the sheared
sheets. It is desirable _that the rolled sheets be
of slightly smaller varea than the metal periph
_eral frame which is to form the support for the
shelf, and then the sheet is stretched slightly to
25 bring it to the ñnally desired .width or area.
An object of this invention, therefore, is to pro
vide a machine ‘for simultaneously sizing and
or other suitable source of power, a horizontal
shaft 26 being rotatably mounted in bearings -21
and 28 in the _frame members 23 and 2l. an inter
mediate bearing 29 being also ‘provided for said
shearing wide sheets of ñattened expanded metal
so that the finished sheets are exactly the desired
26.
30 width. and so that the shear cut extends directly ' shaft
The shaft 2s is provided with a pair of eccen
through the. center of the bonds, leaving no í trics 30 and 3i adjacent the ends thereof, said
jagged points adjacent the shear cut.
being connected by collars 32 and con
Another object of the invention is to provide eccentrics
necting
rods
33 to pins 34 which are secured be
a machine in which provision is made for- adjust
upright ears 35 on a shear _knife frame 36 35
35 ment to accommodate expanded metal having tween
to which is secured a shear knife 31. The shaft
diiferent strand and bond widths, for sheets of of motor 25 is provided with a pinion, not shown,
flattened expanded metal having different widths, within afgear housing '40, which meshes with a
and also adjustment to permit slight contrac
gear, also within the said housing, which is se
tion in the width of the- sheet during the stretch
y cured to a counter-shaft 4I,_the latter being ro- 40
ving or sizing operation ;- also to improve machines
tatably- mounted on the framework of the ma
chine. The end of shaft 4l opposite the motor
25 is provided with a pinion, not shown, which
meshes with a gear 4_2 mounted on shaft 26 with
.in a gear case 43. When the motor 25 is started 45
' for the manufacture of iiattened expanded metal
,in
other
respects ' hereinafter
claimed.
specified
-'
and
.
Reference is to be had to the accompanying
drawings forming a part of this'specification, in
by-the operator pressing on a foot treadle M,
`shaft 26 is rotated through the speed reducing
Fig. l‘is a perspective view of our improved mechanism previously described, to cause the
machine for simultaneously shearing and stretch
shear blade 31 to be lowered and shear oiï a sheet
_ which
g
‘
of metal which' may extendbetween it land a 50
60 ing flattened expanded metal,
.
Fig. 2 isa plan view of the machine, `
_
_
Fig. 3 is a sectional elevation through the ma
_
special lower shear blade to be more fully de
scribed. It will be recognized that the mecha
nism so farv described in detail, constitutes a
chine taken on line 3-3 of Fig. 2„
Fig. 4 is a sectional elevation through the maf ` standard power shear of a type well known tothe
55 chine taken on line 4--4_ of Fig. `2,
`
.
art.
2
2,121,470
The salient feature of our invention consists in
combining with4 the previously- describedfpower
shear. mechanism and instrumentalities where
-by' simultaneous shearing and stretching >of
flattened expanded metal are accomplished. For
this purpose, we provide a stationary table 41 ad
jacent the shear blade 81,-which is preferably in
the form of a flat slab of metal which has high
rigidity in an edgewise direction. 'I‘his table 41
is rigidly secured to the framework of the machine
‘ by suitable bolts.
A second flat slab movable
table 48 of'high >edgewise rigidity is slidably
bar 11 extends along said bar `12 between the
shoulder 18 and the blocks 1|, said bar 11 being
flrmly pressed against said blocks 1_I by screws
18 in the bar 12 so as _to lock said blocks 1| in the
-desired adjusted position so that the pins 52 reg
ister exactly with the. diamonds of the expanded
metal being treated. Each of the blocks 68 and
1| is provided on its edge adjacent the shear knife
81 with slots 18 and 80 respectively which receive .
a shear knife 8| having a cutting edge 82. 'I‘he 10
opposite edge of each block 1| is provided with
a slot 88 which receives a rectangular bar 84.
mounted on the framework of the machine in a
manner to be hereinafter described. Sheets of
A pair of -long screws 85.` extend through each
ient for handling by\our improved machine, al
ing limited by an adjusting screw 88. Thus b_y
adjusting the screw 88, the distance between the
cutting edge 82 and the flattened face of pin 52
can be varied slightly to accommodate expanded 25
metal of different bond widths,°so that the bond
15 flattened expanded metal 50 are usually formed _ block 1| and serve to securely attach together the
bar 84, block 1| andv shear knife 8| .as a unit.
by rolling ordinary expanded metal usually lon
The block 88 is somewhat shorter than the dis
gitudinally of the diamonds between heavy rolls tance between shear knife 8| and bar 84, and is
which serve to flatten down the bonds and provided in the slo`t 11 with a spring recess 86 for
strands from an inclined position into a common
20 plane. We have found that sheets of flattened receiving a compression spring 81 which normally
tends to slide the block 68 rearwardly toward the 20
expanded .metal 30 inches by 8 feet are conven
bar 84, the rearward vmovement of said block be~
though sheets smaller than this can be utilized.
or larger sheets may be used by -providing tables
41 and 48 of _sufficient length to accommodate the
sheets.
.
.
The sheets of flattened expanded metal are in
is severed exactly through its center to leave no
_ serted edgewise into the machine below the shear
jagged edges which might injure a workman.
blade 81 from the far side oi' the machine as seen ’
In order to manipulate the sliding table 48 to
in Fig. 1 with the diamonds extending parallel accomplish the stretching of the flattened ex 30
with said blade. A series of pins 5| is provided panded metal simultaneously with the shearing of
on the movable table 48 for engaging in the dia
the bonds by the shear knife 31, we provide a
monds at the'entering edge of the sheet 50, and mechanism to be hereinafter described, which is
a series of pins 82 is supported on the flxed table driven by tandem chains 80 connecting sprocket
41 for engaging in a row of diamonds intermedi
wheels 8| secured to shaft 28, with sprocket
ate the edges of sheet 80. In order to support wheels 82 secured to a counter shaft 88. The 35
the pins 5|, the inward edge of table 48 is pro
shaft 88 is rotatably mounted in suitable bearings
vided with a longitudinal slot 54 (Fig. 11) bound
84 on the framework of the machine, and a'. bevel
ed on one edge with an inclined wedge surface
40 I8, and on the opposite edge by a longitudinal
` shoulder 88 having an inner inclined locking sur-~
face 81. Each of the pins 8| is rigidly secured
to a block 88 whose lower surface 88 rests in the
slot 84, being provided with an inclined lockingA
45
shoulder 80 `which seats against the shoulder 51.
One edge of each of the blocks 58 is provided
with an inclined wedge surface 8|. A bar 82 ex
tends longitudinally of the table 48 and inclined
wedgesurfaces 88 and 44 are formed on the edges
of said bar 82 so as to force the block shoulders
l0 firmly against the locking surfaces 81 by means
of bolts 85 which extend through the bar 82 and
are threaded into the table 48. 'I'he blocks 58
and pins 8| are thus locked in position longitu#
dinally of the table 4I so- that each pin 8| engages
in a diamond of the flattened expanded metal.
By loosening'the bolts 85, the blocks 58 may be
shifted longitudinally ofthe table 48 to suit ex
panded metal of various diamond lengths.
Each of the pins I2 is preferably formed on a
slidable block Y88 which is provided with out
standing shoulders 88 whichv slidably engage with
in a slot 10 formed in the upper surface of a block
1|. An elongated bar 12`is L-shaped in cross sec
65 tion and is'rigidly bolted to the forward edge of
' " table 41 adjacent the shear knife 81. The upper
sur‘tace of bar 12 is provided with a longitudinal
slideway or slot 18 which terminates at one edge
in an inclined locking shoulder 14, and at- the
other edge in a vertical shoulder 18. Each of the
` blocks 1| is provided with a tongue or shoulder 18
which is supported in the slot 18, said shoulder
18 having its forward edge inclined to engage the
‘shoulder 14. A series of identical blocks 1'| are
.7.5 thus supported in the slot 18 and a rectangular
gear 85 is secured to one end of said shaft and
meshes with a bevel gear 88 secured to a cam
shaft 81', the latter being rotatably mounted in 40
bearings 88 supported on the framework of the
machine.
A cam |00 is secured .to the shaft 81
between the bearings 88. A rock lever |0| is piv
otally mounted at its lower end, on a pin |02
which is secured in a bearing |08, the latter be 45
ing secured to the floor |04,within a housing |05.
The lever |0| has a bifurcated center section |06,
and a roller |01 is rotatably mounted on a pin
|08 between the legs of said section |06 so as to
contact with the cam |00. A rod |08 is pivotally 50
connected near the center of lever |0| and ex
tends through the housing |05 to receive a com
pression spring- | l0 which serves to maintain the
roller |01 in firm contact with the cam |00, a
turnbuckle ||| being provided on said rod |08 55
for adjustment purposes.
y
The upper end of lever |0| is pivotally con
nected to a connecting link ||2v by means of a pin
||3 at one end of said link. The other end of said 60
link is formed into a bifurcated section | |4 to
which'the end of a spring rod ||5 is pivotally
connected by means of a pin ||6. The rod ||5
extends into 'a spring tube or cylinder ||1 and a
long compression spring ||8 extends around said 65
rod within the tube ||1. The spring ||8 is con
fined between a collar ||8 threaded onto the end
of -rod III, and an annular cap |20 threaded onto
the end of the cylinder ||1, the latter being pro
vided with a lock nut |2I. The cylinder ||1, is 70
slidably mounted for axial movement in a pair
of bearings |22 and |28 which are rigidly secured
to the framework of the machine. The spring | I8
normally urges the cylinder | I1 to the left as seen
in Fig. 4, the axial movement of said cylinder ||1 75
2,121,470
3'.
zontal leg |63 is formed on each bracket |6|, and
onto the rod ||5- adjacentthe pin ||6, said> collar . is secured by bolts |64» to the table l40, so as to
being partially divided into two sections by a >slot -rigidly support said table. A pair of spaced
|25 connected by a locking screw |26 adapted to flanges |65 connects the legs |62> and |63v of each
lock said collar against rotation from an adjusted bracket I6 | , and a threaded rod |66 passes loosely
through said flanges, being threaded into a nut
In order to cause the stretching of the ñattened |61 which is received between each pair of said
expanded metal at the time a strip is sheared oil, flanges |65. The outer end of each of ,said rods
being limited by a collar |24 which is threaded
position.
`
«
f
la pair of collars |28 and |29 are rigidly secured to
the tube ||'|. An annular ilange |30 is secured to
Y|00 passes through a flange |68 formed on the `
outer end of each bar |4|.and |44, being provided 10
collar |28, a key' |3|a on said flange |30 engaging
in a registering keyway in the collar |28 to pre
vent said collar from rotating on said tube ||1.
with an adjusting crank |69 for changing' the
position of table 46 relative to the' bars |4| and
|44 to produce different widths» of sheets. It
will be seen that the table 46, rods |66 and bars
to prevent axial movement of the collar |29. A'
under the impulse of cam |00 which rotates in
the'tube ||1>to prevent axial movement of the
|4| and |44 reciprocate back and forth“ as a unit
15 A cap |3|- is threaded onto the end of tube ||1 - '
cam |32 is secured to the collar |28 by means of a
bolt |33, and a key |34 on said cam |32 engages
in a longitudinal keyway in the collar |28. The
20 bolt |33 passes through a slot |34 in the cam |32
so that when the bolt |33 is loosened, said cam
termittently when the operator . presses foot
treadle 44. In order to return the table 48 to its
inner position after a stretching operation, we
provide a pair of compression springs |10, each
may be adjusted axially of the tube ||1 to any
desired adjusted position. by means of an ad
justing bolt |35 which passes through a lug |36
25 on the collar |28 to engage said cam |32. An in
clined cam surface |31 is formed on the cam |32
which engages a roller |38 the latter being, ro
tatably mounted on a pin |39 secured to a down
of which is coiled about a rod |1| having one end
screwed into the shoulder |40, and the other end
slidably received in a hole in a shoulder |12
formed on each of the frame members 20. The I
springs |10 are confined between a washer |13 25
and retaining nuts |14 on rod |1|, and >the
shoulder |12.
The' sheets oi.’ flattened expanded metal are
standlng shoulder |40 formed on aslide bar |4|.` sheared off to the desired width with the shear.
A similar cam |42 is secured to the collar |26 to cut extending exactly through the center of the 30
engage a roller |43fwhich is rotatably mounted bonds leaving no sharp points or edges, as stretch'
on a slide bar |44. As the rod | I5 is moved axially `ing to the desired size takes place simultaneously
to the left as seen in Fig. 4, under the action of with the shearing- opera-tion. The resulting strip
cam |00, the collar ||3 compresses the spring . of expanded metal is cross-sheared to the desired`
length to produce a shelf having a peripheral 35
35 H0 which also moves the tube ||1 to the left’so - frame bar |15 to which the sized sheetY of ñattened l
>that cams |32 and |42 act on the rollers |30 and
|43 to pull the bars |4| and |44 longitudinally expanded metal of exactly the right size is elec
tro-welded or otherwise secured.
to accomplish the stretching of the ilattened ex
au
` panded metal in a manner to be more fully de
scribed. A pin I44A extends radially from the
collar H0 and operates in a slot |45 in the tube
||1 to prevent the collar ||9 from rotating and
changing its position on the rod |15 and thus,4
change'the compression of spring ||0 when once
45 adjusted. The movement of the tube ||1 to the
left, is limited by an adjusting screw |46 having
a head |41 at its outer end. The screw |46 passes .
through an opening in the cap |3| and an annu
lar collar"|48 on its inner end to contact with the
cap |3| and linut the movement of the tube ||1
50
to the left so that the cams |32 and |42 accom
plish exactly the desired stretching of the ex
panded metal. A graduated indicator |49 ex-.
tends from the frame of the' machine adjacent
the adjusting head |41 so that said screw |46 can
beset to anydesired position, and a set screw- |00
v engages said screw |46 to set it in said adjusted
position.
-
In operation, the strip of flattened expanded '
metal 50 is introduced crosswise between the
shear blade 31, and a series of individual shear
blades 8| .' The sheet is deposited within the dia
monds along the leading edge of the sheet engag
ing the series of plus 5|, and a row of diamonds
intermediate the edges of the sheet 50 engaging 45
the series of pins 52. The operator then actu
ates the foot treadle 44 which starts the motor
26 and rotates shafts 4| and 26. The eccentrics'
30 and 3| then act through connecting rods 33 to
lower shear blade 31 adjacent shear blades 8| 50
so» as to cut off a strip of flattened expanded
metal exactly through the centers of the bonds.`
As the shear blade 31 is lowered, counter shaft
03 is rotated by chains 90 to rotate cam shaft 91
through Ibevel gears 95 and 36. Cam |00 on
shaft 951 then‘acts on roller |01 to rock lever' |0|
and move rod ||5 axially to the left (Fig. 4)
through link ||2. The spring H0 is compressed
V'The bars |4| and |44 are slidably mounted for ` by collar ||0 lby the movement of rod H5, which
longitudinal movement in the L-shaped slide causes tube ||1 to also move to the left in slide
frame members 20 and 2| respectively. Plates bearings |22 and |23 until the inside of cap v| |3
|64 and |55 are secured to the frame members 20 >contacts with the stop shoulder |48 on adjustable
and 2|, by~screws |50 so as to confine the vbars rod |46. -’I'herod H5, however, continues to move
14| inframe members 20' and 2| with a sliding to the left until _the cam |00 makes half a revolu
fit.
Each of the bars |4| and |44 is'provided tion, after which the rod H5 moves to the right 05
65
with an internal longitudinal slot |01 which is during the remainder of the revolution of the
shaped to receive an elongated clamping bar |50. cam |00. As the tube ||1 moves to the left, it
Each of the slotsl |61 opens at the inside ofthe carries with it cams |32 and |42 which act on
bars |4| and |44, in a narrow slot |59 into which rollers |30 and |43 to move slide bars |4| and
|44 outwardly' away from shear blade 31. The 70
extends an elongated integral key |60 formed on
an |_-shaped bracket 16|. A plurality of bolts outward movement of cams |32 and |42 also car
|02 extend through a leg |62A of bracket |6i, ries the table 4_0 outwardly which causes the pins
through 'the key |60, and are threaded into the > 5| to stretch >the flattened expanded metal the
desired degree as it-is sheared. In order to ad
- clamping bar |50 so as to adjustably clamp the
just the table 43 along the slide bars _|4| and |44 75
brackets
|6|
onto
the
_bars
|4|
and
|44.
A
hori
75
4
2,121,470
to accommodate expanded metal strips of dif
ferent widths. bolts |82 are loosened and cranks
I“ on rods Ill rotated the desired amount, after
which :bolts Il! are again tightened' to lock >the
table Il to slide bars III and l".
Pins I2 are
adjustable relative to the shear blades 8i for
different bond widths, by rotating adjusting
for engaging said sheet intermediate the edges
thereof, cooperating shear blades adjacent said
intermediate engaging means, means for sepa
rating said engaging means to stretch said sheet,
and simultaneously shearing of! a section of said
sheet as said sheet is stretched.
7. In a machine for shearing and stretching
screws Il, and are adjustable longitudinally of \ flattened expanded metal. a series of fixed pins
the bar 12 for different diamond lengths, by loos
positioned adjacent cooperating shear blades,- a
ening set screws 1l. Pins 5i are adjustable longi
series of -movable pins in spaced, parallel relation
tudinally of the table Il by loosening set screws to said ilxed pins, slide members for slidably sup
l5
porting said movable pins, a tube having cam
.It should be lunderstood that the stretching . means for moving said slide members and mov
function of the machine may be utilized without able pins upon axial movement of said tube, a
utilizing the shearing function. In other words,
sheets of flattened expanded metal may be sized
or stretched on the machine without shearing.
We would state in conclusion that, while the
illustrated vexample constitutes a practical em
bodiment of our invention. we do- not wish to
10,
compression spring, a rod within said tube for
supporting said spring in compression, means for
moving said rod axially of said tube so as to in
crease the compression of said spring and cause
the axial movement of said tube and cam means
so as to separate said _ñxed and movable pins to 20
limit ourselves precisely to these details, _since accomplish the stretching of said metal as said
manifestly the same may be considerably varied metal is sheared.
.
without departing from the spirit of' the inven
8. A machine as described in claim 7 character
tion as defined in the appended claims.
ized by means for adjustably hunting the axial
25
Having thus described our invention, we claim ymovement of saidotube and cams, and thus regu
as new anddesire to secure by Letters Patent:--- late the amount of stretching applied to said 25
l. In a machine for shearing and stretching expanded metal.
- ''
flattened expanded metal, a series of ñxed pins
9. .A machine as described in claim 7 charac
positioned adjacent cooperating shear blades, a
30 series of movable pins in spaced, parallel relation terized by a_ rotatable cam adaptedv to act on said
rod and cause the axial movement of said tube.
to said flxed pins, and means for increasing the
10. A machine as described in claim 7 charac
’ distance between said fixed and movable pins terized by means for adjusting the position of said
so as to stretch expanded metal on said pins as
said expanded metal is sheared along one edge
«
35 by said shear blades.
2. In a machine for shearing and -stretching
flattened expanded metal, a series of fixed pins
of varying width.
40 tion to said ilxed pins, and means for moving '
said movable pins away from said flxed pins a
metal supported by said pins as said expanded
metal is sheared along one edge by said 'shear
‘
3. In a machine for shearing and stretching
flattened expanded metal, a series of fixed pins
positioned adjacent cooperating shear blades, a
' shaft, and means associated with said shaft for
. series of movable pins in spaced parallel relation
so to said flxed pins. slide members for slidably
supporting said movable pins, and means for
varying the distance between said flxed pins and
said movable pins and slide members.
4. In a machine for shearing and stretchingv
flattened expanded metal, a series of fixed pins
positioned adjacent cooperating shear blades, a
series of movable pins in spaced, parallel relation
to said fixed pins.' slide members for slidably sup
porting said movable pins. and a cam for mov
>lng said‘ slide members and movable pins awayl
from said fixed pins so as to -stretch to a prede
` termined degree flattened'expanded metal sup
ported on said fixed and movable pins.
engagingsaid sheet intermediate the edges there
of, cooperating shear blades adjacent said inter
mediate- engaging means, a rotatable shaft
adapted to cause said shear blades to shear off a
strip of said sheet of flattened expanded metal, a
rotatable cam adapted to be driven from saidA
predetermined distance so as to stretch expanded
blades.
.
11. In a machine for shearing and stretching
flattened expanded metal, means for engaging an
edge of a sheet of said expanded metal, means'for
positioned adjacentcooperatlng'shear blades. a
series of movable pins in'spaced, parallel rela
45
movable pins relative to said slide members so
as to produce sheared sheets of expanded metal
causing said sheet engaging means to separate
and stretch said sheet as said sheet is sheared.
12..In a machine for shearing and stretching
flattened expanded metal, means for engaging an
edge of a sheet of said'expanded metal, means
for engaging said sheet intermediate the edges
\ thereof, cooperating shear blades adjacent said
intermediate engaging means, slide members
supporting said edge engaging means, cam means
adapted to move said edge engaging means away
from said intermediate means as said sheet is
sheared so asto accomplish simultaneous shearing
and stretching of said sheet, and spring means
for returning said slide members to normal posi
tion after said shearing and stretching opera 60
tions.
13. In a machine for shearing and stretching
flattened expanded metal, a series of ilxed pins
5. In a machine for shearing and stretchingv positioned adjacent cooperating shear blades, a
c5 flattened expanded metaL‘a series of nxed pins 'series of movable pins in spaced, parallel relation
positioned adjacent cooperating shear-blades, a to said ilxed pins. means for varying the distance 05
‘ series of movable pins in spaced, parallel relation ` between said two series of pins to accomplish
to said fixed pins, slide members for slidably'sup
stretching of a sheet of flattened expanded metal,
porting said movable pins, a tube having cam
70 means for moving said slide members and mov
able pins upon axial movement of said tube, and
means for moving said tube axially.
6. In a machine for shearing and stretching
flattened expanded metal, means for engaging
anedgeofasheet'ofsaid expanded metal, meansv
and means for varying the distance‘between in
dividual pins of each series to accommodate ex 70
panded metal of different diamond lengths.
14. In a machine for shearing and stretching
flattened expanded metal, a series of fixed pins,
a'series of movable pins in spaced, parallel rela,
tion to said fixed pins, a ?xed' shear lblade ad 75
5
2,121,470
jacent each iixed pin, a reciprocating shear blade' axial movement of said tube, and means for mov
adjacent said series o! ñxed pins and shear blades, ing said tube axially.
18. In a machine for stretching ñattened ex
means for varying the distance between each fixed
pin and each fixed shear blade so as to accom
modate expanded metal of different bond width,
and means for varying the distance between said
fixed and movable pins to accomplish the stretch
ing of said sheet of metal.
15. In a machine for shearing and stretching
10 flattened expanded metal, a seriesY of ilxed .pins
positioned adjacent cooperating shear blades, a
series of movable pins in spaced, "parallel rela
tion to said fixed pins, slide members for slid
ably supporting said movable pins, cam means for
15 causing the movement of said slide members, and
means for adjusting said cam means relative to
said slide members so as to vary the movement
of said slide members under -the action of said
cam means.
20
.
16. In a machine for stretching ñattened ex
panded metal, a series of fixed` pins, a series of
movable pins in spaced,_ parallel relation to said
ñxed pins, slide members for slidably supporting
2,5
said movable pins, cam means mounted for sub
stantially rectilinear movement, means on said
slide members positioned for engagement by said
cam means, and means for operating lsaid cam
means to move said slide members and movable
pins away from said fixed pins so as to stretch
to a predetermined degree flattenedl expanded
metal supported on said fixed and movable pins.
17. In a machine >for stretching flattened ex
panded metal, a series of `fixed pins. a series oi'
35 movable pins in spaced, parallel relation to said
fixed pins, slide members for slidably supporting
said movable pins, a tube having cam means for
l moving said slide members and movable pins upon
panded metal, a series of fixed pins, a series of
movable pins in spaced, parallel relation to' said
fixed pins, slide members for slidably supporting
said movable pins, a tube having cam means for
moving said slide members and movable'pins upon
axial movement of said tube, a compression
spring, a rod within said tube for supporting said 10
spring in compression, means for moving >said
rod axially vof said tube so as to increase the
compression of said spring and cause the axial
movement of said tube and _cam means so as to
separate said ñxed and movable pins to accom
plish the stretching of said expanded metal.
15
19. A machine as described in claim 18 char
acterized by means for adjustably hunting the
axial movement of said tube and cams, andthus
regulate the amount of stretching applied to said 20
expanded metal.~
`
p
20. A machine as described in claim 18 char
acterized by a rotatable cam adapted to act on
said rod- and cause the axial movement of said
tube.
.
21. In a machine for stretching flattened ex
'
2,5'
panded metal, a series o_f ñxed pins, a series of
movable pins in spaced, parallel relation to said
fixed pins, slide members for slidably supporting
said movable pins, cam means for- causing the
movement of said slide members, and means
for adjusting said cam means relative to said
slide members so as to vary the movement of
said slide members under the action vof said cam
35
means.
BERNARD T. BALLARD.
WILLIAM M. McNEIL.
RALPHHL HURD.
'
,`
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 202 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа