US1202747A - Attachment for stamping-presses. - Google Patents

Description

H. J. LIPSEY.

ATTACHMENT FOR STAMPING PRESSES.

APPLICATION FILED MAY 6, 9T6.

1 ,2U%,7%?. Patented Oct. 24, 1916.

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H. J. LIPSEY.

ATTACHMENT FOR STAMPING PRESSES.

APPLICATION FILED MAY 6, I916.

Patented Oct. 24,1916.

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H. J. LIPSEY.

ATTACHMENT FOR STAMPING PRESSES.

APPLICATION FILED MAY 6, I916.

Patented Oct. 24, 1916.

5 SHEETSSHEET 3- H. J. LIPSEY. ATTACHMENT FOR STAMPING PRESSES.

APPLICATION FILED MAY 5. I9I6- 1, 7%, Patented Oct. 24,1916.

5 SHEETS-SHEET 4- WITNESSES: III/VENTOH X All/[Serf l H. J. LIPSEY.

ATTACHMENT FOR STAMPING PRESSES.

' APPLICATION FILED MAY 6, 1916.

Patented Oct. 24, 1916.

5 SHEETS-SHEET 5.

WITNESSES.

M w. m/ M ,'b/wg A TTOR/VE Y5 HUBERT J. LIPSEY, OF INDIANAPOLIS, INDIANA, ASSIGNOR 0F ONE-HALF TO MARION E. ENSLEY, 0F INDIANAPOLIS, INDIANA.

ATTACHMENT FOR STAMPING-PRESSES.

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Application filed May 6, 1916.

0 all whom it may concern Be it known that I, HUBERT J. LIPsEY, a citizen of the United States, and a resident of Indianapolis, county of Marion, and State of Indiana, have invented a certain new and useful Attachment for Stamping-Presses; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like letters refer to like parts.

The object of this invention is the feeding of can lids and like disks or articles which are of irregular or peculiar form, to a stamping-press. When such can lid or disk has an annular bead or other vertical extension from the body thereof, it is impossible to feed them from a stack or'a magazine with the usual means for doingsuch work. This is because the can lid or disk at the bottom of the stack cannot be moved horizontally therefrom, but must be moved or separated otherwise.

One feature of this invention consists i" the means for separating the lower lid or disk of a stack and feeding it without interference from the other lids or disks in the stack. Broadly speaking, this consists of a pair of parallel slotted oscillatory round bars which engage the opposite edges of the lower disk and feed it down out of the magazine while at the same time supporting the rest of the stack and keeping them in place.

Another feature of the invention consists in a rotarytable with a plurality of magazines thereon for lids or disks of different diameters so that the'table can be adjusted and the machine be rendered inoperative during such setting and adjustment of the rotary table. Herein the feeding rods or shafts have pinions which are actuated by rack bars resting upon them, and one feature of the invention consists in elevating these rack bars and holding them out of operating engagement with said pinions during the adjustment or setting of the machine.

Still another feature of the invention consists in the means for regulating the means for feeding the lid or the disk to the stamping press after it has been fed or separated from the magazine or stack so that it will operate satisfactorily with lids or disks of different diameters.

Another feature of the invention consists Specification of Letters Patent.

Patented Uct. 24h 1916.

Serial No. 95,787.

in associating with one of the dies in a stamping press,'a holder to receive the lid or disk for treatment, which holder is yieldingly mounted so that when the press operates, it would yield sufficiently to let the lid or disk come into engagement with the die This is for lids or disks having beads or like extensions and the extent of the yielding movement of such holder is equal to the depth or thickness of the bead or extension from the lid or disk.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims:

Inthe drawings, Figure 1 is a front elevation of the machine. Fig. 2 is a horizontal section on'the line 2-2 of Fig. 1, showlng parts in plan view. Fig. 3 is the same as Fig. 2 with the rotary table removed to show the mechanism below the same. Fig. 4 is a vertical section centrally through a part of the machine on the line 44 of Fig. 2. Fig. 5 is asection on the line 55 of Fig. 2, parts being omitted and showing the parts in their normal position. Fig. 6 is a portion of Fig. 5 showing the position of parts while a lid or the like is being separated from the pile of lids in the hopper, the parts being shown about midway of their operation. Fig. 7 is the same as Fig. 5 with the lower part extended and showing a further step in the operation, wherein the lower lid has been deposited from the magazine on a stationary table rod for feeding to the stamping part of the machine. Fig. 8 is a vertical section transversely of the machine on the line 8-8 of Fig. 1, parts being broken away and showing particularly the means for actuating the lid feeding means shown in Fig. 5. Fig. 9 is an enlarged section on the line 9-9 of Fig. 8. Fig. 10 is an enlarged section on the line 1010 of Fig. 8. Fig. 11 is a section on the line 1111 of Fig. 3.

The invention consists particularly in the attachment to a stamping machine. This is indicated in Fig. 1, where there is a stamping machine of ordinary type shown at the right-hand end of the figure and the attachment referred to is at the left-hand end of Fig. 1. Referring first to the stamping machine shown'in the drawings, there is a base plate 10 with a frame 11 extending upwardly therefrom. and having a horizontal table 12. In the upper end of the frame there are bearings 13 for a crank shaft 14 carrying a pulley wheel .15 and said shaft is driven by means not shown. The shaft is connected by a connecting rod 16 with a female die holder 17 which reciprocates vertically in the frame 11. 18 is the female die.

The attachment which constitutes this invention is connected with the stamping machine above described as follows: There is a frame 20, as shown in Figs. 1 and 8, which is secured by bolts 21 upon the table 12. Said frame 20 extends laterally to the left, as shown in Fig. 1, from the stamping machine, and in the portion of said frame 20 which is secured to the stamping machine, the male die 22 is mounted in a die holder 23, as seen in Fig. 4, so that said die will cooperate with the other die and so that the upper edge of said die 22 will be on a level v with the lid or disk 24 which is also on a level with stationary table 25 to the left, as seen in Fig. 4, and which is supported stationary on the frame 20 and which is integral with said frame. A rotary table 30 is mounted on the left-hand end of frame 20, as seen in Fig. 4, it having a central downwardly extending stud 31 operating in a bearing 32. The rotary table 30 is adapted to carry a plurality of magazines 33 in which a stack of lids or disks 34 is placed to be fed to the machine.

The machine, as has been stated, is for the purpose of feeding and stamping tin lids or other disks of such form that they cannot be fed from the bottom in the usual way or by the usual means. Thus the type of lid 34 shown in the drawings herein has annular downwardly extending beads or grooves 35. The beads 35 of the lids when stacked rest in one another in series, as shown in Fig. 5. It is clear, therefore, that the lower lid or disk could not be moved outward from beneath a stack by any laterally moving feeding means, as is usual in machines of fixed and other types. It is necessary, therefore, to provide means for engaging the lower lid or disk of the stack and forcibly removing it and at the same time holding back the stack of lids or disks above it. By having magazines of varying sizes on said rotary table, the machine is adapted to be used or operate on lids or disks of varying diameters. The table 30 is provided with an opening 36 under each magazine large enough to permit the lid or disk 34 to feed down through it upon the stationary table 25, as shown in Fig. 4, and when it is deposited on the table 25, it is moved or shoved to the right from the table 25 onto the lid or disk holder 24 surrounding the die 22. The bead 35 will hold the body of the lid or disk 34 away from the die 22 after the lid or disk is deposited on the holder 24 and, therefore, it is necessary that said holder 24 be yieldingly mounted so that it will depress as the other die is forced downward and let the disk or lid come down flat on the die 22 at the moment of stamping. The holder 24 has a plurality of downwardly extending studs 37 with widened heads 011 the lower end operating in spring guides 38 and supported upon spiral springs 39.

The means for feeding the lid or disk 34 down out of the magazine will be understood from an examination of Figs. 5 to 7. Each magazine 33 has near its lower end and at opposite sides thereof a tangentially disposed slot or cut-out 42 horizontally disposed and in which tangentially disposed oscillatory rods 40 operate, as shown in Fig. 5. These rods are in position to support a lower disk 34 of the stack in a magazine. Each rod 40 has a longitudinal-slot 41, as shown in Fig. 5, on the upper side thereof when the rods 40 are in normal position. As said rods are rotated in the direction of the bar in Fig. 6, said slots will receive the opposite edges of the lower lid or disk 34, as is shown in Fig. 6, and the peripheries of said rods will receive and support the next lid or disk above the lower one so that onlv one lid or disk, the lower one, will be fed down and out of the magazine. The further rotation of the rods 40 from the position shown in Fig. 6 will bring them into the position shown in Fig. 7, where they have discharged the lower lid or disk so that it rests upon the table 25, as seen in Figs. 4 and 7. Then the rods 40 are returned from the position shown in Fig. 7 to the position shown in Fig. 5, ready to receive another lid or disk. The rods 40 are oscillated a half revolution and returned in their operation as will be explained. The width of the slots 41 should be less than the depth of the bead 35 so that it will be impossible for the edges of two lids or disks to enter the slots 41 at the same time. The rods 40 are mounted in bearings 43 on the upper side of the rotating table 30, as indicated in Fig. 2, there being a pair of such rods for each magazine.

The means for driving or oscillating the feed rods 40 is shown in Figs. 1 and 8. As shown in Fig. 8, each rod 40 has a pinion 45 secured thereon and adapted to mesh with and be actuated by a pair of rack bars 46. Each of these rack bars 46 operates in a stationary guide bar 47 supported on a rod 48 vertically reciprocable through a vertical bearing 49 which is secured to the frame 20. When the guide bars 47 are in their lower position, as shown in Fig. 8, the rack bars 46 engage with the pinions 45. The two rack bars 46 move in opposite directions. The right-hand rack bar 46 is rigidly connected with a bar 50 which is connected with fee a cord 51 that passes under a pulley 52 mounted on a bracket 53 and to a. vertically slidable pin 54. The left-hand rack bar is secured to a rod 55 and a cord 56 extends from it under another pulley 52 and up to the pin 54. The pin 54 is vertically movable in brackets 57 secured to the side of the 'frame 11 of the stamping press, as shown in Fig. 1. \Vhen the pin 54 is elevated, the two rack bars 46 will be actuated toward each other and cause a half revolution of the rods 40. Said pin 54 is lifted by a. hook 60 connected with a link to a sprocket chain 61, as seen in Fig. 10. This chain at its up per end is fulcrumed to a lever 62 fulcrumed on the frame 11 by a pin 63 and having on its other end a roller 64 that engages a cam 65 on the end of the crank shaft 14, as seen in Figs. 1 and 8. The rack bars 46 are separated by a compression spring 66 between the ends of the rods 50 and 55, as seen in Fig. 8. The return of the rack bars 46 causes the return or half revolution of the rods 40. The actuating movement of the rack bars 46 and rods 40 is determined by the cam 65 and the position of the hook 60 on the chain 61.

Means for mounting the rack bars 46, as heretofore explained, is such as to enable said rack bars to be lifted up away from the pinions 45 on the rods 40 and stop the operation thereof. This is done when it is de sired to adjust the rotary table 30 to bring another magazine 33 into position. After a new magazine is brought into position, the rods 40 associated with it, and the pinions 45 thereon would be brought into the same position, as shown in Fig. 8, and then the rack bars 46 are lowered until they mesh with the pinions. The means for elevating and disengaging the rack bars 46 from the pinions 45 is shown in Fig. 1 and consists of arms 70 secured on a rod 71 extending through the machine and mounted on the frame 20. One of said arms 70 has a handle 72 for oscillating the rod 71 and the arms 70 secured thereto. The arms 70 are pivoted by connecting links 73 with the vertically reciprocable rods 48 on which the guide bars 47 are secured.- Thus when the handle 72 is moved to the right from the position shown in Fig. 1, both rack bars 46 will be lifted out of engagement with the pinions 45 and during that time the table 30 can be rotated to bring another magazine into position.

Vhen the lever 72 is thrown to the right for the purpose above stated, it is held there by an arm 75 which is secured on the rod 71 and on the free end of which a lock pin 76 rides by gravity. Said lock pin is held and actuated by a bearing 77 so that the upper end of the pin will engage the under side ofthe rotary table 30.; The handle 72 will be thus held until the' lock pin 7 6' registers with a hole 78 through the table 30. There is one of these holes placed at a certain dis tance from the center of each magazine or opening 36 in the rotary table so that said pin 76 by entering the hole, will stop the table at exactly the right point for feeding the lids or disks from a certain magazine to the stamping press. lVhen the lock pin 76 comes in registry with said hole 7 8, it will be forced into the same by a spring 7 9 and intermediate parts. This spring 79 connects the arm 7 O with the frame 20 and not only forces said pin in locking position, but returns the arms 70 and causes an opposite return of the rack bars 46 and their means of support to normal and operative position.

After the lid or disk has been deposited 011 the stationary plate 25 from the lower end of the magazine, as shown in Fig. 4, it is moved to the right by a sliding plate 80 under the rotary table 30 and surrounding the central stud thereof, as seen in Figs. 3 and 4. Said plate 80 is secured on a rack bar 81 which is slidable in the frame 20. The rack bar is actuated by a gear 83 secured on a tubular shaft 84 mounted in bearings 85, see Fig. 11. Said tubular shaft has secured to it a dial 86, see Fig. 1, which has a number of holes 87 in it adapted to receive a spring actuated pin 88 which is carried by an arm 89 secured on a shaft 90 which extends through the center thereof and is actuated by a sprocket wheel 91 which is actuated by the sprocket chain 61 con nected with the lever 62, as heretofore explained. This sprocket chain passes over an idler 92 and thence to the sprocket wheel 91 and then over another idler 93 and hence down below the rotary table 30 and has a weight 94 on the lower end thereof to return said sprocket chain after it has been elevated and actuated by the lever 62, as heretofore explained. Hence, there is such an operative connection between the means for operating the rods 40 and feeding the lid or disk out of the magazine and the means for removing the feeding plate 80 as to cause the proper relative action of said parts. The dial 86 is for the purpose of adapting the extent of movement of plate 80 to suit lids or disks of different diameters. If the table 30 were located to bring another magazine into position which contains smaller lids or disks than that shown in Fig. 4, the dial 86 would be set by first moving the plate 80 up against a lid or disk deposited on plate 25 and then putting the. pin 88 into the corresponding hole 87 of the dial so that said plate 80 would always start its actuating movement at the edge of the lid or disk deposited on plate 25 and thereafter would have the same extent of movement. In all instances, the plate 80 moves a distance equal to the distance between the center of the magazine and the center of the dies or part 22. This brings about the proper extent of movement of the lid or disk and its proper registration with the dies.

The invention is not limited to any particular stamping press, nor to variations in the construction and operation of the attachment which are obvious. \Vith this attachment, lids or disks of. such peculiar shapes as to prevent them being stamped by the ordinary machines heretoforeemployed, can be 'rapidly and satisfactorily operated upon. p

The invention claimed is: I 1.-A feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, and a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or disk in: the magazine, said'feed rods being longitudinally slotted and the surface of each 'rodoutside of said slot being smooth so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it from the stack.

2. A feeding attachmentv for a stamping press including a magazine for holding a stack of lids or disks, and a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or disk in the magazine, said feed rods being longitudinally slotted and cylindrical outside of said slot so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotatedinward and separate it from the stack, said slots being sufiiciently narrow that they will receive only the edges of the bottom rod or disk and as the rods are turned inward, they will engage and support the next lower lid or disk and prevent its escape.

3. A feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or' disk in the magazine, said feed rods being longitudinally slotted and the surface of each rod outside of said slot being smooth so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it from the tudinally slotted so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it from the stack, means for oscillating said rods inward a half revolution, and means for returning said rods to bring the slots therein uppermost.

5. A feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or disk in the magazine, said feed rods being longitudinally slotted so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it' from the stack, a pinion 011 each of said rods, a rack bar for engaging and actuating each pinion, and means for simultaneously moving said rack bars in opposite directions.

6. A feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or disk in the magazine, said feed rods being longitudinally slotted so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it from the stack, a pinion on each of said rods, a rack bar for engaging and actuating each pinion, and means for simultaneously -moving said rack bars toward each other.

7. A feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or disk in the magazine, said feed rods being longitudinally slotted so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it from the stack, a pinion on each of said rods, a rack bar for engaging and actuating each pinion, bars connected with said racks, cords connected with said bars, a pair of pulleys arranged so that said cords will pass over the adjacent sides of said pulleys respectively, and means for simultaneously drawing said cords over the pulleys.

8. A feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or disk in the magazine, said feed rods being longitudinally slotted so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it from the stack, a pinion on each of said rods, a rack bar for engaging and actuating each pinion, bars connected with said racks, cords connected with said bars, a pair of pulleys arranged so that said cords will pass over the adjacent sides of said pulleys respectively, a pin to which said cords are secured, and means for vertically moving said in.

9. feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, a pair of oscillatory tudinally slotted so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it from the stack, a pinion on each of said rods, a rack bar for engaging and actuating -each pinion, bars connected with said racks,

cords connected with said bars, a pair of pulleys arranged so that said cords will pass over the adjacent sides of said pulleys respectively, a pin to which said cords are secured, a vertically movable chain with a hook thereon to engage said pin and move it, and means for vertically moving said chain.

10. A feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or disk in the magazine, said feed rods, being longitudinally slotted so that the opposite edges of said lower lid or disk will enter the slots as the rods are rotated inward and separate it from the stack, a pinion on each of said rods, a rack bar for engaging and actuating each pinion, bars connected with said racks, cords connected with said bars, a pair of pulleys arranged so that said cords will pass over the adjacent sides of said pulleys respectively, a pin to which said cords are secured, a vertically movable chain with a hook thereon to engage said pin and move it, a lever for veiizically moving said chain, and a cam for actuating said lever, substantially as set forth.

11. A feeding attachment for a stamping press including a magazine for holding a stack of lids or disks, a pair of oscillatory feed rods for engaging and supporting the opposite edges of the lower lid or disk in the magazine, said feed rods being longitudinally slotted so that the opposite edges of said lower lid or disk Will enter the slots as the rods are rotated inward and separate it from the stack, a pinion on each of said rods, a rack bar for engaging and actuating each pinion, means for simultaneously moving said rack bars in opposite directions, and a spring for returning said rack bars to said normal position after actuation.

12. A feeding attachment for a stamping press including a rotatable table, a plurality of magazines thereon for holding stacks of lids or disks, means on said table associated with each magazine for feeding the lids or disks downward therefrom one at a time, and means located at the feeding position and arranged to operate the lid or disk feeding means for any magazine when such magazine or feeding means is moved to the feeding position.

l3. A feeding attachment for a stamping press including a rotatable table, a plurality of magazines thereon of different diameters for holding stacks of lids or disks of varying diameters, means on said table associated with each magazine for feeding the lids or disks downward therefrom one at a time, and means located at the feeding position and arranged to operate the lid or disk feeding means for any magazine when such magazine or feeding means is moved to the feeding position.

let. A feeding attachment for a stamping press including means for holding a lid or :disk in position to be acted upon by a die in the press, a table on the same level as said holding means and upon which lids or disks of different diameters may be placed on at a time, a feed plate slidable on said table toward and away from said lid or disk holding means in the press, a rack on the underside thereof, a gear engaging and operating in said rack, a sleeve on which said gear is secured, a shaft mounted loosely in said sleeve, a perforated dial secured to said sleeve, an arm secured to said shaft with a pin carried thereby. adapted to releasably engage said dial in any hole therein to which said dial may be adjusted, whereby said shaft will move said feed plate a uniform distance from the different positions into which it may be adjusted.

15. The combination of a stamping press, a feeding attachment connected therewith having means for holding a lid or disk in position to be acted upon by a die in the press, a table on the same level as said holding means and upon which lids or disks of different diameters may be placed one at a time, means slidable over said plate for pushing and feeding each disk into proper position on the lid or disk holding means, means for adjusting the retracted position of said feeding means so that it will be close to the rear edge of a lid or disk on said plate, and means actuated by the stamp ing press for causing the movement of said feeding means.

16. The combination of a stamping press, a feeding attachment connected therewith having means for holding a lid or disk in position to be acted upon by a die in the press, a table on the same level as said holding means and upon which lids or disks of different diameters may be placed one at a time, a feed plate slidable on said table toward and away from said lid or disk hold ing means in the press, means for always moving said plate a uniform distance, means for setting said plate moving means so that it will move the same from any position in which the plate may be placed by adjustment thereof, and a chain actuated by said stamping press for causing the feeding movement of said feed plate.

17. The combination of a stamping press, a feeding attachment connected therewith having means for holding a lid or disk in position to be acted upon by a die in the press, a table on the same level as said holding means and upon which lids or disks of different diameters may be placed one at a time, a feed plate slidable on said table toward and away from said lid or disk holding means in the press, a rack on the underactuated by said stamping side thereof, a gear engaging and operating in said rack, a sleeve on which said gear is secured, a shaft mounted loosely in said sleeve, a perforated dial secured to said sleeve, an arm secured to said shaft with a pin carried thereby adapted to releasably Copies of this patent may be obtained for five cunts eacn, by addressing the Commissioner Washington, D. C.

different diameters may be plac' e'dc oiie at a time, a feed plate slidable on said-{table toing said sprocket wheel for operating said feed plate, in one direction, and a weight for returning said chain and press.

19. A feeding attachment for a stalnplng press including a plate for holding a lid or disk to be acted upon by a stationary die under the same, sald plate having an opemng through which the die projects, means for supporting said plate, a spring for supporting said plate supporting means, and means for limiting such downward movement of said plate when the body of the lid or disk comes in engagement with the die.

In witness whereof, I have hereunto aflixed my signature. 7

HUBERT J. LIPSEY.

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