US737930A - Metal-expanding machine. - Google Patents

Description

PATENTED SEPT. 1, 1903.

G. J. HOLL.

METAL EXPANDING MACHINE.

APPLICATION FILED NOV. 25. 1902.

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N VE N TOR W1 TNESSES Altorney No. 737,930. PATENTED SEPT. 1, 1903. G. J. HOLL.

METAL EXPANDING MACHINE.

APPLICATION FILED NOV. 25, 1902.

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PATENTED SEPT. 1, 1903.

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No. 737,930. PATENTED SEPT. 1, 1903. G. J. HOLL.

METAL EXPANDING MACHINE.

APPLICATION FILED NOV. 25. 1902.

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APPLICATION FILED NOV. 25, 1902.

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No. 737,930. PATENTED SEPT. 1, 1903.

' G. J. HOLL.

METAL EXPANDING MACHINE.

APPLICATION TILED NOV. 25. 1902.

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No. 737,930. Patented September 1, 19Q3. UNTTED STATES PATENT OFFICE.

nrUSTAV J. IIOLL, OF CLEVELAND, OHIO, ASSIGNOR TO WM. G. IIURLBERT AND EVAN J. JOB, OF NILES, OHIO.

METAL-EXPANDING MACHINE.

SPECIFICATION forming part of Letters Patent No. 737,930, dated September 1, 1903.

.lpplication filed November 25, 1902. Serial No. 132,791. (No motleLl TO m y 0071067711: being shown in position approaching a firm Be it known that I, GUSTAV J. HoLL, of contact with a sheet. Fig. 12 isaview of the Cleveland, in the county of Ouyahoga and same parts, showing the grippers in firm con- State of Ohio, have invented certain new and tact with the sheet. Fig. 13 is an enlarged 55 useful Improvements in Metal Expanding detail view showing the dogs of the delivery- Machines; and I do hereby declare the fol-' table in their normal position-thatis, out of lowing to be a full, clear, and exact descripengagement. Fig. 14 is a view of the same tion of the invention, such as will enable othparts, showing one of the dogs moved by the ers skilledin the art to which it appertains to slitted and distended sheet so as to be en- 60 :0 make and use the same. gaged by the other or coacting dog. Fig.

The primary object of this invention is to is a plan view of the stripper-bars and their provide simple and highly-improved machinsupports. cry for manufacturing expanded metallic Referring to the drawings, 1 designates a lathing. feed-table, and 2 a shelf at one side thereof, 65

15 A further object is to provide means for the table being equipped with side and cenautomatically feeding a metallic sheet up to tral gages 3 for directing the passage of two the slitting-dies and to also effect the forcing sheets at a time. At the discharge end of or distention of the slitted portions in oppothis table are two stops 4, mounted on a cross-. site directions away from the plane of the rod 5, such stops being designed to normally 7o sheet in one passage of the latter, the slitting project just above the edge of the table to and distending being performed while the arrest the passage of sheets. At the proper feeding operation is being continued. time-to wit, at each complete cycle of the A further object is to provide improved machine-cams 6 on one of the shafts of a means for effecting the automatic discharge train of gearing engage rollers 7 in the ends 75 of the slitted sheets from the machine and of levers 8, which levers are connected by delivery-table onto a conveyer or other snplinks 9 to the stops 4, thereby drawing downport; and a further object is to provide a mawardly on the latter to allow a sheet to pass chine of the character herein stated which from the supply-table. The stops are held in aside from being positive and efiective in its their normal positions by weights 10 on 10- 8o operation will be entirely automatic. vers 8.

The invention will be hereinafter fully set The sheets are withdrawn from the feedforth, and particularly pointed out in th table and fed to the machine by feeding claims. mechanism, shown as composed of upper and Inthe accompanyingdrawings,Figurelisa lower feed-rolls 12 and 13 and grippers 14:.

35 side elevation with portions of the supply and (See Figs. 11 and 12.) These feed-rolls condelivery tables broken away. Fig. 2is a plan sist each of two spaced-apart disks between view with the supply and delivery tables rewhich the grippers are pivotally hung. The moved. Fig. 3 is a plan view of the latter grippers consist of angularly-bent fingers table. Fig. 4C is an end view thereof. Fig. hung on cross-pins 15 with their outer ends 4o 5 is a vertical transverse sectional view extended tangentially beyond the peripheries through the slitting-dies and coacting parts, of the disks, being normally held outwardly taken about 011 line 5 5, Fig. 2. Fig. 6 is a by springs 16. When two cooperating gripsectional view on line 6 6, Fig. 5. Fig. 7 is pers of coacting feed-rolls simultaneously ena plan view of one of the distending-dies. gage a sheet, they are turned on their pivots 5 Fig. 8 is an end view thereof. Fig. 9 is a deas against the action of their springs 16, and tached view of the frames of the feed and their normally outer ends are forcedinwardly withdrawal rolls, showing their rearward potoward the axes of the two feed-rolls,.as shown sitions in dotted lines. Fig. 10 isan enlarged in Fig. 12. These grippers being extended View of one of the stops and the operating tangentially beyond the feed-rolls contact I00 50 mechanism therefor. Fig. 11 is an enlarged with the upper and lower surfaces of the view of the feed-rolls and grippers, the latter sheet in advance of the engagement of the latter with the coacting feed-rolls, serving thereby in the revolution of the latter to draw the sheet into and between them, the peripheries of such rolls acting on the sheet to feed it forward independently of the grippers. In the further revolution of the feed-rolls the grippers release their hold on the sheet and are again forced outwardly under the action of their springs 16. The shafts of these feedrolls have their bearings in opposite upright frames 17, which frames are pivotally supported at their lower ends on a cross-shaft 18, permitting them to be swung backward and forward within an arc of a circle. The sheet passing beyond the feed-rolls is engaged by a series of slitting-dies 19, by which it is slitted longitudinally, and thereupon it is engaged by upper and lower distending-dies 20, the purpose of which is to force adjacent slitted portions in opposite directions away from each other. Passing beyond the dist-endingdies, the sheet is engaged by a set of withdrawal-rolls 21, the function thereof being to insure the passage of the sheet through the machine after it is free of engagement with the feed-rolls 12 and its delivery onto the delivery-table 22.

As before stated, the frames carrying the bearings of the feed-rolls 12 are pivotally mounted at their lower ends. The corresponding frames 23 of the withdrawal-rolls 21 are likewise mounted on a cross-shaft 24. To a cross-rod 25, supported by these frames 23, are connected two links 26, which at their rear ends are secured to a cross-rod 27, supported by frames 17 of the feed-rolls. A second set of links 28 connect-cross-rod to the upper ends of two arms 29, pivoted at 30 to frame 31. These arms 29 support each a roller 32, engaged by cams 33, whereby the two sets of frames carrying the feed and withdrawal rolls are in each cycle of operation caused to move rearward1ythat is, in

opposition to the direction of travel of the sheets-a limited distance, as shown in Fig. 9. By this construction I am enabled to continue the operation of the feed-rolls, as well as the operation of the-withdrawal-rolls, while the sheet is held stationary by the slittingdies or the distending-dies, or both, without danger of buckling consequent upon overfeeding, as would occur if the feed-rolls re mained in fixed position and in continuous operation while either or both sets of dies were acting on the sheets. The cams 33 are on a cross-shaft 34, which is driven by a miter-gearing between itself and an inclined shaft 35 at one side of frame 31, such latter shaft at its upper end having a miter-gearing connection with a main crankshaft 36, whereon is the driving-wheel 37, to which a belt (not shown) is designed to be applied. Motion from shaft 34 is communicated, through a train of gearing, to the feed-roll shafts, and, as shown in Fig. 2, a miter-gearing between shaft 18 and shaft 24 (upon which the two roller-frames are pivoted) communicates motion to the shafts of the withdrawalrolls. The cams 6 are on one of the gearingshafts mounted in frames 17.

SZizftt'ngdz'es.-There are two sets of slittingdies, as well as two sets of feed-rolls, distending-dies, and withdrawal-rolls, thereby allowing for working two sheets at a time. Each set of slitting-dies consists of an upper verti- Cally-reciprocating series and a lower stationary series, the latter being mounted in a cross-piece or housing 38 of frame 31 and the former in vertically-- movable housings 39. These latter housings are connected by links 40 to the main crank-shaft 36, each link having a turnbuckle 41 to permit of easy adjustment. The dies of the upper and lower series are arranged alternately, as shown in Fig. 5, the dies of each series being separated by blocks or plates 42'snfficiently to accommodate the dies of the other series. The blocks 42 are beveled outwardly from their centers, so as to direct away from the dies any scale that may be out from the sheets during the splitting thereof. Each of the dies and each of the spacing-blocksof each series is ,cut out and beveled along one edge to accommodate a locking wedge-block 43, held in place by set-screws 44. The two sets of dies are coincident with an opening formed in a table 45 of frame 31. This table for the purpose of forming this opening is composed of two parts or sections, their inner opposite edges being disconnected save through the intermediary of two series of upper and lower stripper-bars 46, the bars of each series being interposed in line between the dies of the respeotive upper or lower series. At their ends these stripper-bars are beveled to conform to corresponding bevels of retaining-plates 47, held to upper and lower tie-plates 48, which latter are secured by bolts 49 to the table 45 adjacent to the opening therein, and they are held slightly separated between their opposite faces by washers 50. The function of this arrangement is that a sheet after being slitted is prevented from binding between any ofthe dies, the several stripper-bars serving to force the sheets out of engagement with the dies immediately upon the upper dies being elevated or withdrawn. This is due to the fact that the stripper-bars being held only at their ends and spanning the opening in the table have a certain amount of spring or resiliency, which, together with the spring or resiliency inherent in the table itself, tends to cause the stripper-bars to immediately resume their normal positions upon removal of the pressure of the upper dies. Thus a sheet is prevented from adhering to either set of dies. Furthermore, by beveling the edges of the spacing-blocks 42- scale .is prevented from accumulating between the dies, being directed away therefrom by said blocks, with the result that the dies may be freely worked without danger of binding or being injured by the accumulation of scale. Disien(Zz"ng-dies. 1he lower distending- ICC IIO

dies are fixedly mounted each in a base 60, supported by frame 31, while the upper distending-dies depend from arms 61, pivotally hung on a cross-rod 62, and at their free ends these arms are connected by links 63 to rearward extensions 64 of the vertically-movable housings 39. By this means the upper distending-dies are alternately raised and lowered simultaneously with the raising and lowering of the upper series of slitting-dies. As shown in Figs. 7 and 8, these dies have on their faces alternate concaves 65, between which are central projections 66, also concaved on either side of their centers. By this construction the dies upon engaging opposite sides of a sheet, adjacent to the slits thereof, distend or force the slitted portions upwardly and downwardly-that is, in opposite directions in planes at substantially right angles to the plane of the sheet-thereby forcing the slitted or separated sections of the sheet apart and increasing the size of each slit looking at the latter transversely. Now that the sheet has been slitted and the slitted portion distended it is taken up by the withdrawal-rolls, which when the sheet has one passed free of the feeding'rolls control the further passage of the sheet through the machine and efiect its discharge therefrom.

Delivery-tabla-Upon the sheet leaving the slitting and distending machine it is fed by the Withdrawal-rolls onto the delivery-table 22. This table is composed of two tilting sections 70, each a practical duplicate. of the other, the two being provided to receive two sheets as they leave the die-machine. Each of these tilting sections consists of a series oftable-section is held in its normal horizontal position by a weighted arm 74, also secured to shaft 73. As a sheet is about to pass free of the withdrawal-rolls it is engaged by a feed-roll 75, driven by a belt 76, which feedroll, coacting with a lower feed-roll 77, feeds the plate to the extreme rear end of the tablesection. Upon reaching this end the plate comes in contact with a dog 78, pivotally hung from an arm 79, fast on shaft 73, at the end thereof. This dog has a shouldered pin extending from its outer face, and by reason of the weight of its lower end normally occupies the position shown in Fig. 13-that is, out of the range of movement of a second dog 81, pivotally hung in a second arm 82. This latter arm is loosely journaled at one end on shaft 73, and to its other end is connected a pitman 83, which is actuated by a wheel 84, to which motion is communicated from drive-shaft 85. As stated, dog 78 in its normal position is out of the range of movement of dog 81, which latter in the constant raising and lowering of arm 82 through the action of pitman 83 constantly passes back and forth in close relation to but not engaging with the shouldered pin 80 of dog 78.

When, however, the sheet is brought into engagement with this dog 78, the latter is turned on its pivot'bearings and forced slightly outward, as shown in Fig. 14, into the line of travel of the reciprocating dog 81, with the result that as the latter in its downward stroke engages the pin of dog 78 the tablesection will be tilted, as shown in dotted lines, Fig. 4, and the plate allowed to fall therefrom at one side onto a series of conveyer-' belts 86, by which it is carried to one side of the delivery-table. Immediately upon the plate being so discharged dog 78 will resume its normal position, thereby allowing the ta bio-section to return to its horizontal position under the action of weight 74,31161 the dog 81 may continue to swing up and down without contacting with the former until another sheet is ready to be discharged onto the conveyer. The sheet is then presented to an ex pander, whereby it is stretched or expanded laterally. The machine for accomplishing this forms the subject-matter of a concurrent application for patent this day executed by me.

I claim as my invention- 1..In a metal-expanding machine, a series of rotary feeders having tangentially-arranged grippers designed to engage a sheet of metal and draw the same to the feeders, as set forth.

2. In a metal-expanding-machine, a series of rotary feed-rolls, and a series of grippers mounted on said rolls and extended tangentially therefrom for engaging a sheet of metal in advance of the rolls and drawing it into engagement with the latter, substantially as set forth.

3. In a metal-expanding machine, a series of feed-rolls having each two spaced-apart disks, a series of gripper-fingers, pivotally hung between such disks,and springs for holding such fingers extended tangentially beyond the disks, as set forth.

4:. In a metal-expanding machine, means for intermittently slitting a metal sheet, constantly-operated means for feeding the sheet to such slitting means, and means controlling such feeding means for preventing an overfeed of the sheet to the slitting means while the sheet is being slitted, as set forth.

5. In a metal-expanding machine, means for slitting a metal sheet, constantly-operated feed-rolls for feeding the sheet to such slitting means, and means for bodily moving such feed-rolls in opposition to the direction of the feed of the sheet while the slitting means is acting thereon, as set forth.

6. Ina metal-expanding machine, means for slitting a metal sheet, constantly-operated 7. In a metal-expanding machine, means for slitting a metal sheet, constantly-operated feed-rolls for feeding the sheet to such slitting means, withdrawal-rolls for engaging the sheet beyond the slitting means, and means for bodily moving the feed-rolls and withdrawal-rolls in opposition to the direction of the feed of the sheet while the slitting means is acting thereon, as set forth.

8. In a metal-expanding machine, means for slitting a metal sheet, constantly-operated feed-rolls, constantly-operated withdrawalrolls, frames for each set of rolls pivotally supported, connections between such frames, a constantly-operated cam, and an arm actuated thereby connected to one of said frames, said frames and rolls being bodily reciprocated during the action of the slitting means, as set forth.

9. In a metal-expanding machine, means for slitting a sheet comprising upper and lower dies arranged in series, and separatingblocks between the dies of each series, the

- blocks of one series being in line with the dies of the other series, said blocks having their edges beveled, as and for the purpose stated.

10. In a metal-expanding machine, means for slitting a sheet comprising upper and lower dies arranged in series, the dies of each series being spaced apart to accommodate the dies of the other series, and means between the dies of each series for preventing the sheet adhering thereto, as set forth.

11. In a metal-expanding machine, means for slitting a sheet comprising upper and lower dies arranged in series, the dies of each series being spaced apart to accommodate the dies of the other series, and stripper-plates extended between the dies of each series and supported'at their ends, substantially as set forth.

12. In a metal-expanding machine, a table having an opening therein, upper and lower dies arranged in series, one of which is located within such opening of the table, the other series being movable into and out of such opening, the dies of each series being spaced apart, and stripper-bars extending across the opening and located in line with the spaces between the dies, substantially as set forth.

13. The combination with the table having an opening therein, of the lower series of dies, fitted in said opening, the upper verticallymovable series of dies, the dies of each series being spaced apart, those of one series alining with the intervening spaces of the other series, the upper and lower series of stripperbars extended across such opening and arranged, respectively, in line with the intervening spaces of each series of dies, and the retaining-plates holding said stripperbars, said plates being secured to the table adjacent to its opening, substantially as set forth.

14.-. The combination with the frame having a table formed with an opening therein, of the lower series of dies fitted in said opening, the

upper series of dies in line therewith, the ver' tically-movable housing carrying said upper dies, means for operating the same, the dies of the two series being alternately arranged with intervening spaces, upper and lower series of stripper-bars in line, respectively, with the intervening spaces of each series of dies, said stripper-bars being beveled at their ends, and retaining-plates secured to the table on opposite sides of the opening and having-beveled edges conforming to the ends of the stripper-bars, substantially as set forth.

15. In a metal-expanding machine, means for slitting a metal sheet comprising a stationary die and a movable die, means for moving such latter die, and means for distending the slitted portions of the sheet in opposite directions, comprising a stationary die and a movable die, and a connection between such lattervdie and the movable die of the slitting means, as set forth.

16. In a metal-expanding machine, means for distending the slitted sections of a metal sheet in opposite directions comprising two flat coacting dies, each of which is formed with alternating concaved portions and intermediate central projecting portions, each of such latter portions being concaved on each side of its center, as set forth.

17. In a metal-expanding machine, means for distending the slitted sections of a metal sheet in opposite directions comprising two coacting dies, each of which is formed with alternating transversely-extended concavities, and intermediate projecting portions between the concavities in line with the centers thereof, each of such portions being concaved to the sides of the dies, as set forth.

18. In a metal-expanding machine, means for slittinga metal sheet,means for distending the slitted portions of such sheet, constantlyoperated feed-rolls for feeding the sheet to the slitting and distending means, constantlyoperated withdrawal-rolls for acting on the sheet after it is distended, and means for bodily moving such feed-rolls and withdrawalrolls in opposition to the direction of the passage of the sheet while the slitting and disforth.

19. In a metal-expanding machine, means for slitting a metal sheet, means for distending the slitted sections in opposite directions,

constantly-operated feed-rolls for feeding a tending means are acting thereon, as set the latter, a constantly-operated dog, said former dog being normally out of the line of movement of the constantly-operated dog and designed to be engaged thereby when moved into the line of travel thereof by a metal sheet engaging therewith, as set forth.

21. The combination with the table-frame, and a rock-shaft mounted thereon, of a supporting-section secured to such rock-shaft, an

ting a metal sheet, means for distending the slitted sections, and the withdrawal-rolls, of the delivery-table onto which the sheet is fed by said withdrawal-rolls, a rock-shaft, a tilting section secured to said rock-shaft, feedrolls near one end of such section, a dog fast on said shaft, an arm loose on said shaft, a second dog carried thereby, means for constantly reciprocating said arm and dog, the first-mentioned dog being normally out of the line of movement of the second dog and designed to be engaged thereby to efiect the tilting of the table-section when engaged by the sheet on the latter, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

GUSTAV J. HOLL.

lVitnesses:

W. G. KENAGA, M. E. KEPLINGER.

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