US1591322A

US1591322A - Stacking machine

Info

Publication number: US1591322A
Application number: US716943A
Authority: US
Inventors: Karmazin John
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-05-31
Filing date: 1924-05-31
Publication date: 1926-07-06
Anticipated expiration: 1943-07-06

Description

July I s 1926.

J. KARMAZIN STACKING momma F' iled May 51, 1924 5 Sheets-Sheet l IHHHHL WTTOF/f/Fy o g no I! July 6, 1926.

J- KARMAZIN STACKING MACHINE Filed May 31, 1924 5 Sheets-Sheet z July 6 1926.

J. KARMAZIN STACKING MACHINE Filed May 51 1924 5 Sheets-Sheet 5 0 WW M 3 MM m r a a l n. w u a m w 2;. "a 2 Ww oqo July 6 1926. 1,591,322

J. KARMAZIN STACKING MACHINE 7 Filed May 51 1924 5 Sheets-Shut 4 I I? O a '5 WWW J. KARMAZIN STACKING MACHINE Filed May 31 1924 5 Sheets-Sheet 5 Patented July e, 1926.

UNITED STATES JOHN KARMAZIN, F DETROIT, MICHIGAN.

STACKING MACHINE.

Application flled May 31, 1924. Serial No. 716,943.

This invention relates to radiator assembling machines and in the embodiments herein described and illustrated in the drawings is particularly adapted for the assembling of radiators of the type having integral tubular projections from thin sheet metal elements, the projections registering to form water conduits.

The radiator comprises a plurality of superposed fin or web forming elements, .each provided with a plurality of integral tapering tubular projections, the ends of which are adapted to fit into the tubes of the adjacent fin element, to form continuous water conduits through the radiator. co-pending application Serial No. 641,850, filed May 28, 1923, discloses a machine for forming from a strip of sheet metal a strip of radiator element forming material comprising the tapering tubular projections formed integral with the transverse web, as above mentioned.

One object of the present invention is to provide means for severing the radiator strip material produced by the machine disclosed in my application Serial No. 641,850 filed May 28, 1923, into elements-of a length suitable for the construction of a radiator, and to provide means for superposing or stacking the elements so formed in proper relation to be pressed together, to form the -section have been radiator cooling section.

A further object of the invention is to -provide means for lowering the table on which said elements are superposed, as successive elements are placed thereon, through a d stance suitable to maintain the top of the stack of elements at a desired level, relative to the strip being formed so that. each element, as severed from the strip may drop upon the stack.

A further object of the invention is to provide an element ,forming and stacking device with means for automatically stopping its own motion as well as the motion of the element forming machinewhen the desired number of elements to form a cooling placed on said stacking device. l i

A further object of theinvention is to pro vide a stacking device for radiator elements.

A further object of the invention is to provide a press for compacting the stacked elements received thereby into a permanently assembled structure.

A further object of the ivention is to provide an element receiving and stacking device with means for interrupting the supply of elements thereto when a predetermined number of elements have been received thereby.

With these and, other objects in view my invention consists .in a novel arrangement and combination of parts which are illustrated in the drawings and will be hereinafter described.

In the drawings Figure 1 is a side view partly in'section of a preferred form of embodiment of my invention.

Figure 2 is a vertical section on the line 2-2 of Figure 1, looking in the direction indicated.

Figure 3 is a plan view of the machine illustrated in Figure 1. v

Figure 4 is an elevation of the element forming strip feeding devices.

Figure 5 is an elevation of the cutter and cutter operating devices.

Figure 6 is a horizontal section approximately on line 66 of Figure 1.

Figure 7 is a detail'of a one way clutch connection.

Figure 8 is a side elevation of a modfied form of my nventon..

Figure 9 is a section approximately on the line 99 of Figure 8.

Figure 10 is a detail of the clutch pedal releasing devices.

Figure 11 is a plan view of the machine shown in Figure 8 partly in section.

Figure 12 is a fragmentary elevation partly'in section showing one form of element compacting device.

The main frame of the machine embodying the form of my invention which I have illustrated in Figures 1 to 7, comprises a base plate 10, to which are suitably attached pairs of uprights 11 secured at their upper ends to a top plate 12. The means for feedmg the radiator element forming strip from a source of supply (i. e. the forming machine), to the cutting and stacking devices will first be described.

A supporting frame work attached to the strip forming machine at. 9 is. indicated generally by 13. Suitably journaled in the frame 13 is a drive shaft 14 adapted to be driven from a source of power, preferably with a spur gear 19 fixed to a short shaft 20 carrying an upper feed roller 21'. The

the

feed rollers

16 and 21, springs 24 sur-.

shaft 20 is journaled in arms 22 carried by a rod 23 and slidable on the uprights 25. To provide an adjustable pressure between round the uprights 25, which are secured to the frame 13 and pass thru enlargements in the arms 22 and are compressed between said arms and adjusting nuts 26 at the upper ends of the uprights 25 to put the roper pressure on the roller 21. A roller re easmg cam 27 rigid with a handle 28 is carried by a sleeve 29 loosely mounted on the rod 23, so that by pressing the handle 28 downward the end of the cam 27 acting upon the table of the machine presses up the frame comprising rod 22 and arms 23, and raises the roller 21 from the roller 16.

The means for cutting the element formingstrip into sections or elements of uniform length will now be described. The frame 13 comprises a vertical plate 30, adjacent and parallel to the

feed rollers

16, 21. A fixed knife-edge or shear 31 is secured to the upper part of the plate and is held in place by a cover plate 32 secured to the face of plate 30 and by screws 33 passing thru elongated slots 34 in the shear 31. Set screws 35 retain the shear 31 against vertical movement and permit vertical adjustment of the shear to take up wear thereon. A lower movable shear blade 36 is attached to a shear carrying block 37, which carrier block is guided for vertical movement by any desired means, such as the slot 8 in the block 30 and the undercut blocks 38 .and 39, suitably fixed to the plate 30. Af

link 371 may be attached to the shear carrylng block 37 and receive a vertical reciprocatlng movement therefrom for a purpose to be hereinafter described. Block 37 and shear 36 carried thereby may be actuated by the following devices.

A shaft 44 journaled in bearings 45 and 46' secured to the feed roll frame 13 carries a worm gear 47, which meshes with the worm 48 on the drive shaft 14. Shaft 44 also carries a disc 49 provided with a cam or PIOJGOtlOIl 50, adapted to engage and dc press a finger 51 of the cutter actuating device. Finger 51 is adjnstably mounted in a guide way 52 on an elbow lever 53 pivoted at 54, to the frame plate 30. The end of the elbow lever 53 opposite the finger 51 carries 12, and carries at its upper end a shaft 14 has passed an element of a prede- I termined length

thru feed rollers

16, 21 the cam engages finger 51 and actuates the shear. 36 to out said element from the strip, and that the operation of cutting elements of uniform length will continue until the strip is exhausted or the forming machine is t pp 1 It is particularly important that all the elements are cut to the same length and that they be accurately aligned by the cutting means or by the stops 105 so that the projecting tubes on each element will drop with the openings in the top of the preceding element to form the nested structure described in my copending application. v

During the feeding of the element strips out through the cutting means the strip is kept in motion and is suspended from the

feed rollers

16 and 21 so that the projections on the strip being fed to the stacking ma chine do not drop into the openings in the previously stacked strip until it is severed from the remainder of the strip by the cutters 31 and. 32.

The means for receiving and stacking the elements fed thru the

feed rollers

16 and 21 and cut off by

shears

31, 36 will now be described. A receiving table 59 extends between the pairs of uprights 11, and is provided about midway of itslength and on opposite sides with bosses 60, threaded to receive vertical screws 61 and 62 supported and held from longitudinal movement by-the top plate 12. A guide member 591 provided with suitable grooves 593 for receiving the tubular projections 594 of the radiator elements and provided with an adjustable stop finger 592 may be placed on the receiving table 59 to receive the first elementsif desired. 7

The screw 61 passes thru a hub 63 on'the top plate 12, and terminates in a square shank 64 adapted. to receive a wrench or handle for manual turning of the screw.

For driving the screws 61 and 62 and moving the receivingtable 59 a pinion 65 is fixed to the screw 61 above the hub 63 and meshes with an idler pinion 66 carried by a stud 67 on the top plate 12. The screw 62 passes thru a housing 68 attached to the top plate pinion 69 which meshes with the idler 66 carried on the top plate 12 and with a gear 70, through which the driving power is preferably imparted to the screws 61 and 62. A short shaft 71 supported in a bracket 710 attached 4 to the housing 68 carries adisc provided with a pawl 72 which engages internal teeth 7 3 in a recess in gear 70 which is free upon the shaft'71 to thereby provide a one way connection between shaft 71 and gear 70. Fixed to the lowerend of short shaft 71 is abevel or miter gear 74 which meshes with a bevel gear 75 carried by a spindle 76 which is connected thru a universal and extension joint77 with the shaft 44 driven from shaft 14 so that the cut-ting mechanism and stacking table are operated in synchrony. Any suitable me aps may be provided for supporting the-gear 75 in mesh with the gear- 74. The elements of the gear train which drives the screws 61 and 62 will be so proportioned that theigQtable Will be lowered a distance equal totlie height of one element while the length ofj'one element is passing thru the feed rollers.

Means are provided for stopping the machine when a predetermined number of elements have been stacked (i. e. enough to form a. complete cooling section) on the table, and the table proportionately lowered. If the stackingmachine is used in conjunction with the radiator element strip forming machine described in my application Senal No. 641,850 above mentioned it is desirable that both the strip forming machine and the stacking machine be stopped. I

A pedal which may actuate the clutch controlling any desired machine such, as the strip or element forming machine 9, is shown at 81'. To hold said clutch pedal depressed a finger 82 carried by a shaft 83 projects over the edge of the pedal. Shaft 83 is partly supported by the bracket 84 suitably attached to the frame of the stacking machine, is urged towards the clutch pedal by spring 881, and adjacent said bracket carries an arm 85 provided with a tongue 86 adapted to be engaged by the latch 87 pivoted to the bracket 84. Latch 87 is provided with a roller 88 adapted to be engaged by the trigger 89 depending from the carriage 59.

After the machine has been stopped in the manner heretofore described, and while the stack of elements is still on the receiving table, said stack of elements may be pressed together to form a radiator cooling section by elevating the receiving table 59, and com ressing the elements between said table an the top plate 12 of the stacking frame. I This pressing may be manually performed by applying a suitable handle or wrench to the square end 64 of screw- 61, and

turning the same to move the table 59 to-- Ward the top 12, the pawl 72 being moved out of engagement with teeth 73 of gear I 70 to prevent turning of the gears 74 and 75, etc. After the pressing operation the radiator is removed. the receiving table is elevated to its initial position a guide plate 591 placed thereon; and the machine again set. in operation to form, sever and stack the element to form another radiator by depreshereinbefore described adapted also to be combined with the strip forming machine described in my application Serial No. 641,850. The main frame of the stacking device in this embodiment comprises a base plate 100 uprights 101, and top plate 102. The elements delivered by the feeding and cutting mechanism may be received by a guide plate 103, placed on a table 104, and stopped by a finger 105, adjustably attached to an upright 101. to accommodate elements of various lengths. The means for lowering the table 104 as the height of the stack increases is constructed as follows:

Suitably attached to the table 104 is an apron 105' in which is journaled a shaft 106 having an extended squared end 107. Rigidly mounted on the shaft 106 is a pinion 108 which meshes with a rack 109 fixed to one of the uprights 101. Loosely mounted on shaft 106 is a pinion 1.10, to which is attached an arm 111 having fixed thereto astud 1-12 carrying a pawl 113 adapted to engage a ratchet 114 fixed to the shaft 106. An adjustable friction brake band 115, sultably attached to the apron 105' surrounds a drum 117 on the shaft 106 to prevent movement of the table 104 under the influence of gravity. Rollers 118 in the apron 105 bear against the upright 101 and together with pinion 108 retain table 104 against longitudinal tilting. f

-The pinion 110 meshes with a rack 119 which is guided for vertical reciprocatory movement by a flanged roller 120 carried on a stud .121 fixed to the table 104, and a recessed guide block 122, integral with a bracket 123' fixed to the base plate 100. Pivoted to the bracket 123 is a lever 124 which is bifurcated and slotted at one end to receive a stud 125 extending thru therack rod 119. The opposite end of the lever 124 carries a short link 126 secured by a turn buckle or other suitable device 127 to the link 371, which it'will be recalled, ls'attached to the reciprocating shear block 37. The table 109 is thus lowered at each operation of the shears thru a distance equal to the height of one radiator element; the lever 124,

pinions

108 and 110, and ratchet 113 being so proportioned as to effect the. correct amount of movement.

Means are provided for partlally pressing each element delivered to the table into place in the next preceding element. For this purpose the shaft 44 carries cam 128 which actuated the arm 130 rigidly mounted on a shaft 131 'journaled in brackets 132 secured to the main frame. The shaft 131 is thereby rocked in a counter clockwise direction as viewed in Figure 12 against the tension of spring 133. Shaft 131 carries the arms 134 provided with presser fingers 135 adapted when the shaft 132 is rocked to press the last element delivered to the stack into engaging relation with the next lower element. It'is to be understood of course that the position ofthe

cams

50 and 128 on the disc 49 is such that sufiicient time will elapse after actuation of the cutter for the severed element to drop into place upon the stack before the presser fingers 135 are actuated and that the presser fingers are moved out of the path of the incoming ele-, ment strip by the springs 133 as soon as the roller 129 on the end of arm 130 passes: the top of the cam 128.

Means are provided for stopping the machine when apredetermined number" of elements have been placed on the receiving table comprising a cam '136, adjustably mounted on apron 105, and adapted to pass thru a guide 137 on an upright 101 and rock the latch 87 which acts to release a clutch edal or similar device in the manner hereto ore described.

When suflicient elements have been stacked to form the desired height of cooling section the machine is stopped as just described, and the stack removed to a suitable press for final nesting or pressing of the elements together.

To elevate the table 104 to position to receive a new stack of elements the pawl 113 is moved out of engagement with the ratchet 114 and a wrench applied to the end 107 of the shaft 106 which is turned in a clockwise direction to run the pinion 108 and table up the rack 109 on the upright 101.

A suitable guide 36 .guides the elements from the shear onto the stack.

The invention is not to be considered as limited to the exact, structure herein described and illustrated in the drawings but is to be construed as extending to all equivalent devices falling within the "scope of the appended claims.

I claim 1. A radiator assembling machine for assembling radiators of the integral fin and tube type comprising in combination reciprocating 'meansadapted to sever a continuous strip of material transversely into radiator elements and means for superposing said elements in mutually engaging relation and means for pressing the elements together.

2. A radiator assembling machine of the type described comprising a receiving device adapted to receive radiator forming.- elements 1n superposed relation, and means for positively displacing the stack of elements so superposed to maintain the element receiving part of said stack at approximately a constant level.

3. A machine for assembling radiator forming strip consisting of fiat fin portions with integral tubes projecting therefrom comprising radiator forming strip feed rollers, cutters adapted to sever the radiator forming strip when a predetermined length thereof has passed the rollers, and a stacking table adapted to receive the element severed from said strip as it drops from said cutters, and means to direct the elements into mutually engaging relation.

4. A machine for assembling radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom comprising radiator forming strip feeding rollers, depressions on one of said rollers to tubular projections, means for successively severin elements of a predetermined length from tfie strip passed thru said feed rollers, and means for superposing the elements thus formed, as theydrop from the sever-- ing means and means to press the elements into mutually engaging relation.

6. A radiator element stacking machine comprising feed rollers adapted to supply radiator forming strip of the type described at a uniform rate, means for successively severin elements of a predetermined length from t e strip supphed by said rollers, means for superposing said elements, means for automatically interrupting the motion of said feed rollers when a predetermined number of elements have been superposed, and means for pressing said superposed elements together.

7. A machine of the character described comprising feed rollers adapted to feed a radiator formin strip of the type descrlbed, means for forming said strip into elements of a predetermined length, means for automatically interrupting the motion of said feed rollers when the predetermined number of elements have been formed, and means for pressing said superposed elements together.

8. A machine for assembling radiator forming strip consisting of flat pin portions with integral tubes projecting there from comprising devices a apted to supply a radiator element forming strip,-means for forming said strip into e ements of a predetermined length, and receiving means for the elements so formed, said supplying deof said receiving means being always in substantially the same plane, to avoid substantial bending of said strip.

9. A machine for assembling radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom comprising radiator forming strip feeding devices, means for forming the strip fed by said devices into elements of a predeter-.

mined length,'receiving means for said elements, and means for moving said receivmg means 1n synchromsm wlth said strip feeding means.

10. A machine for assembling radiator forming strip consisting offlat fin portions with integral tubes projecting therefrom comprising radiator forming strip feeding devices, means for cutting the strip supplied by said feeding devices into elements of a predetermined length, means for receiving the elements thus formed, and means for displacing said receiving means out of 'the plane of the feeding devices as successive elements are received thereby.

11. A machine for assembling radiator forming strip consisting of fiat fin portions with integral tubes projecting therefrom comprising radiator forming strip feedin devices, means for cutting the stripsuppli by said devices into elements ofa predetermined length, means for receiving the elements thus formed, and means for lowering the receiving means as successive elements are received thereby.

12. A radiator element stacking machine for assembling radiator forming strip 'consisting of fiat fin portions with integral tubes projecting therefrom comprising radiator forming strip feeding devices, means' for cutting the strip sup lied by said devices into elements of 11m orm length, movable receiving means for the elements thus formed, and a common aletnati means for said feeding devices, cutting means and recelvmg means.

13. A radiator element stacking machine for assembling radiator forming strip consisting of fiat fin portions with integral tubes projecting therefrom comprising radiator forming strip feeding devices, means for forming the strip supplied by said feeding devices into elements of uniform length, receiving means on which the elements thus formed are stacked, and means for maintaining the top of the stack of elements ad- 1 jacent the element forming means.

14, A radiator element stacking machine for assembling radiator forming strip consisting. of flat fin portions with integral tubes projecting therefrom comprising radiator forming strip feeding devices, means for cutting the strip supplied by said strip feeding devices into elements of a predetermined length,,a table adapted to receive level.

16. A radiator assembling machine for assembling radiator forming strip consisting of fiat fin portions with integral tubes projecting therefrom comprising a receiving table adapted to receive a radiator forming element in superposed relation, means for moving said table as successive elements are deposited thereon to maintain the top of the stack of elements at approximately the same position, and means for moving said table to press the stack elements thereon together.

17. A radiator assembling machine for assembling radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom comprising radiator element supplying devices, a table adapted to receive the elements supplied by said devices in superposed relation, and means for pressing the elements 011 said table together.

18. A radiator assembling machine for assembling radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom comprising radiator element supplying devices, means for receiving the elements supplied by said devices in superposed relation, and means for mmpw. ing the elements on said receiving means into an assembled radiator.

19. A radiator assembling machine comprising a frame, amovable table guided in said frame, radiator element forming means adapted to deliver elements to said table in superposed relation, means for maintaining the top of the stack of elements on said table at the correct height to receive elements from said element forming means, and means for compressing the stack of elements oii said table between said table and a fixed part of said frame,

20. A' radiatonassembling machine for assembling radiator forming strip consisting .of fiat fin portions with integral tubes proof the tubes thereof and means to press the have been received thereon.

21. In a machine for assembling radiator elements omprising flat fin portions with integral tubes projecting therefrom, means for feeding the elements to the machine, means for cutting the elements into predetermined lengths, means to receive the elements in superposed relation, means to align said elements so as to secure proper registry elements together.

22. A radiator assembling machine for assemblin radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom comprising radiator element supplying means, a table adapted to receive the elements supplied by said means in superposed relation, means for lowering said table as successive elements are deposited thereon, and means actuated by the lowering of said table to stop the. machine.

23. A radiator assembling machine for assemblin K of flat' n portions with integral tubes projecting therefrom comprising radiator element supplying means, a device ada ted to receive the elements supplied by sai means in superposed relation, -means for lowering said device as successive elements are deposited thereon, and clutch controlling means actuated by the lowering of said device to a predetermined position.

24. A feeding device for radiator forming strip comprising a web ortion with rows of tubular projections, sai device comprising a smooth roller adapted to bear upon thesmooth side of the web, a roller provided with recesses adapted to receive said projections and to bear on the web between said projections, means for driving said rollers in synchronism, a reciprocable cutting device and means intermittently actuated by said feed roller driving means for reciprocating said cutting device.

25. A radiator element supplying device comprising feed rollers, driving means for said feed rollers, areciprocable cutting device, and means intermittently actuated by said feed roller driving means for reciprocating said cutting device.

26. A radiator element supplying device for supplying elements of the type described comprising feed rollers, means todrive said feed rollers, a reciprocatable cutting device,

- means for receiving the cut elements, means intermittently actuated by said feed roller driving means for reciprocating said-cutting device and means actuated by said feed'roller driving means for positionin the receiving-means to receive said out e ements in a superposed relation.

27. A radiator assembling machine comprising radiator element supplying means,

radiator forming strip consisting ed.to actuate said clutch actuating means therefor, a movable element receiving table, and means operated by said actuating means for moving said table,

projecting therefrom, a movable table, power driven devices for positively moving said table in one direction, and manual means for moving said table in the opposite direction.

29. In a radiator assembling machine for assembling radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom, radiator element supplying means, driving meahs therefor, a table comprising threaded openings, screws passing thru said openings, and means actuated by said driving means for rotating said screws.

30. In a radiator assembling machine for assembling radiator forming strip consisting of flat fin portions with inte ral tubes projecting therefrom, a movable ta le, means for moving said table comprising threaded openings therein, screws passing thru said openings, power driven means for rotatin said screws in one direction, and manua means for rotating said screws in the opposite direction.

31. In a radiator assembling machine for assembling radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom, a receiving table, a frame, means for moving said table comprising threaded openings therein, screw threaded-devices passing thru said openings, retaining'devices for said screw threaded devices on said frame, connections for driving said screws in synchronism, power actuated means for rotating said screws in one direction, and other means for rotating said screws in the reverse direction.

32. A radiator assembling machine for assembling radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom comprising a table adapted to receive radiator forming elements and to be lowered'as successive elements are with said table for releasing said clutch re-" taining means.

33. In a radiator assembling machine a table adapted to receive radiator forming elements and to be lowered as successive elements are placedthereon, a clutch pedal .controlling device and an adjustable cam device associated with said table and adaptedal controlling device when said table is owered to a predetermined position.

34. A radiator assembling machine comprising radiator element supplying devices, a table for receiving the elements supplied by said devices, and means for positlvely lowering said table step by step as successive elements are deposited thereon by said element supplying devices.

35. A radiator assembling machine for assembling radiator forming strip consisting of flat fin portions with integral tubes projecting therefrom comprising radiator element supplying devices, a receiving table, and means controlled by said element supplying devices for positively moving said table step by step as elements are deposited thereon.

36. A radiator assembling machine for assembling radiator forming strip consisting of fiat fin portions with integral tubes projecting therefrom comprising radiator element supplying devices including a movable shear, receiving table, means to move the shear and means actuated by the movement of said shear to move said table step by step.

37. In a machine of the character described, in combination, a frame, a table movable in and guided by said frame, means for moving said table comprising a fixed rack, a reciprocating rack, a stud shaft secured to said table, a pinion on said shaft engaging the fixed rack, a pinion on said shaft engaging the movable rack and means to impart movement from said latter pinion to the former pinion in one direction and to permit free movement of the latter pinion in the other direction.

38. In a machine of the character described, in combination, a strip cutter comsaid shear, and driving connections between said racks.

39. A radiator assembling machine comprising a receiving table, radiator element supplying means adapted to deliver radiator forming elements one at a time to said receiving table, and means for pressing each element into place on the next preceding element.

40. A radiator assembling machine com prising in combination radiator forming strip feed rollers, means for severing the strip supplied by said rollers into elements of a predetermined length, means for receiving said elements in superposed relation, means for aligning said elements, means forpressing each element as delivered into engagement with the next preceding element, means for stopping the machine when a predetermined number of elements have been received by said receiving means, and means for returning the receiving means to its initial position when the assembled radiator has been removed therefrom.

41. A radiator assembling machine comprising radiator element forming means including a shear, actuating devices for said shear, a receiving table adapted to receive radiator elements from said shear in superposed relation, devices for moving said table controlled by said shear, and presser fingers controlled by said shear actuating means.

, In testimony whereof I have afiixed my signature to this specification;

. JOHN KARMAZIN.