US919488A - Chain-making machine. - Google Patents

Description

P. H. STANDISH.

CHAIN MAKING MAGHINE.

APPLICATION FILED JULY 24, 1907.

Patented Apr. 27, 1909.

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P. H. STANDISH.

CHAIN MAKING MAGHINE. APPLICATION FILED JULY 24, 1907.

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P. H. STANDISH.

CHAIN MAKING MACHINE. APPLIOATION IiLED JULY 24, 1907.

91 9,488, Patented Apr. 27, 1909.

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CHAIN MAKING MAGHINB.

APPLICATION FILED JULY 24, 1907. 91 9,488. Patented Apr. 2'7, 1909.

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lHILANDF R H. STANDISH, OF CLEVELAND, OHIO.

CHAIN-MAKING MACHINE Specification of Letters Patent.

Patented April '27, 1909.

Application filed July 24, 1907. Serial No. 385,320.

T 0 all whom it may concern:

Be it known that I, PnILANoEn ii. STAND- ISH, a citizen of the United States oi America, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented. certain new and useful Improvements in Chain- Making Machines; and I hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

This invention relates to improvements in machines for making chain, and pertains more especially to machines For making welded chain.

The primary object of this invention is to make welded chain with such facility that the cost of such chain is materially reduced.

With this object in view, and to the end of realizing any other advantages hereinafter appearing, this invention consists in certain features of construction, and combinations of parts, hereinafter described, pointed out in the claims and illustrated in the accornpanying drawings.

In the said drawings, Figure 1 is a top plan of a machine embodying my invention. Fig. 2 is a vertical section on line 22, Fig. 1, looking in the direction indicated by the arrow. Fig. 3 is a sectional view in detail, illustrating the mechanism employed in turn ing the chain-holding tongs and also showing the anvil and the blank-carrying jaws of the blank-feeding tongs. Fig. 3 is drawn on a larger scale than Figs. 1 and 2. Fig. 1 is a side view, partly in section, mainly illustrating the mechanism employed in swinging the blank-feeding tongs laterally, and also showing the insertion of a blank into the link last Welded. Fig. 5 is an enlarged vertical sec tion, in detail, on line 5'-5, Fig. a, looking toward the anvil. Fig. 6 is an elevation, partly in section, illustrative of the mechanism employed in turning the blank-feeding tongs. Fig. '7 is a top plan of the chainhold ing tongs and also shows the feeding of the blank next to be welded to and between two bars employed in forcing the separated ends of the blank toward each other preparatory to the delivery of the blank to the anvil. Fig. 8 is a top plan illustrative of the operation of thesaid bars. Fig. 9 is a top plan of the chain-holding tongs and also shows the withdrawal of a welded link from the anvil. Fig. 10 is a central longitudinal section taken vertically through the chain-holding ton s and shows the link last welded gripped by the jaws of the said tongs. Fig. 1.1 is a central longitudinal section taken vertically through the blank-feeding tongs and also shows a portion of the mechanism employed in shifting the said tongs endwise and the mechanism for rendering inoperative the sleeve employed in closing the jaws ol the blank-feeding tongs. Fig. 12 is a central longitudinal section taken vertically through the chain-holding tongs, looking in the direction of the anvil, and shows the jaws oi the said tongs in their non-grasping or open position. Fig. 13 is an elevation, partly in section, of the mechanism employed to swing the blank-feeding tongs in a vertical plane. Figs. l, 6, 7, 8, 9, 10, 11, 12 and 13 are drawn on the same scale as Figs. 1 and 2.

Referring to the drawings, it represents a blank which is to be added to the chainink 0 last welded by the machine. The blank 11. is U-shaped and has its ends it somewhat projecting toward each other and spread apart laterally as shown very clearly in Fig. 5. The ends it of the blank are heated in any approved manner preparatory to operating on the blank and preferably preparatory to the delivery of the blank to the blank-"feeding tongs hereinafter described. Means for heating the ends of chain-link-blanks are too well known in the art to require illustration and description in this specification.

My improved machine comprises blankfeeding tongs for receiving and conveying the heated blank to the chain-link last formed and welded and lor holding the blank during its attachment to the said link and during the welding operation upon the blank and long enough alter the welding operation until the link formed during the said welding operation has been withdrawn from the we ding means and grasped by chain-holding tongs.

T indicates the body-portion or stock of the said blank-feeding tongs, which stock or body-portion is iixed to one end of a laterally extending oscillatory sha'l't K which (see Figs. 1, and 11) has bearing in two boxes Z which are spaced. longitudinally of the shalt a suitable distance from the tongs and centrally between the tongs-bearing end and opposite end of the shaft. The boxes 1 are integral or rigid with a table Z which (see Fig. 11) is provided with a depending axle L which has lateral bearing in a correspondingly arranged upright box m which is supported as will hereinafter appear. The turntable Z is mounted on the upper end of the box m.

The jaws t of the blank-feeding tongs are pivoted, as at t, to the body-portion T transversely of the shaft IQ and are consequently capable of swinging toward and from each other to close and open the tongs respectively. A suitably applied spring 25 (see Figs. 3and 11) interposed between the aws t and between the axes and the outer or blankgrasping ends of the jaws acts to retain the jaws swung apart and consequently open.

The blank-feeding tongs are arranged at one side of and a suitable distance from a cam-shaft E which is rotated in the direction indicated by the arrow 6 and supported from the stationary framework J of the machine, and the shaft K and consequently the tongs when they are in position at one extremity of their lateral movement and adapted to feed the blank borne thereby toward the anvil U of blank-welding means, are, as shown in Figs. 1, 2 and 4, arranged in a horizontal plane and at a right angle to the cam-shaft. The said blank-welding means comprise the said anvil and a hammer V.

Means for closing the jaws t of the blankfeeding tongs and holding the said 'jaws closed immediately upon the reception by and between the said jaws of a blank are provided and (see Figs. 1, 2, 4 and 11) comprise a sleeve 8 which is loosely mounted on and shiftable endwise of the shaft K between the turn-table Z and the tongs. Each jaw tis provided with a rearwardl'y projecting arm t and the outer ends of the ja -arms i diverge toward their outer or free extremities, and the sleeve .3 is rounded at its forward end to facilitate the passage of the sleeve forwardly between the jaw-arms against the action of the spring 22. A collar K suitably fixed on the shaft K and smaller in external diameter than the rear end of the sleeve 8' is arranged to limit the rearward movement of the sleeve. The sleeve 8 is actuated in the direction required to close the jaws t b hand or by suitably operated mechanism wich is not shown or described in this specification.

The blank-feeding tongs are preparatory to the reception and grasping of a blank by the said tongs swung laterally in a horizontal plane to bring the tongs into the position shown in dotted lines Fig. 1, in which position of the tongs a blank u is supplied in any approved manner to the tongs. The actuation of the tongs-bearing shaft and consequently the tongs borne by the said shaft laterally in a horizontal plane is effected by turning the turn-table Z which is turned in the one direction or the other according as the tongs are to be brought into their blank-receiving )osition or into position for feeding the b ank endwiseand forwardly to the anvil U.

p The means for actuating the turn-table Z and consequently swing the tongs-bearing shaft K laterally (see Figs. 1 and 4) preferably comprise a cam E and a spring Z for turning the turn-table Z in opposite directions respectively. The cam E is operatively mounted on the shaft E and has its working peripheral surface engaged by a roller Z borne by a lever Z which is fulcrurned, as at Z*, horizontally and parallelly with the shaft E, to a stationary object, such, for instance, as a member of the framework J. The lever Z is operatively connected by a connecting rod Z with the turn-table Z. A suitably applied spring Z, which is shown attached at one end to the lever Z and at its other end to the stationary framework J,

acts to retain the roller-bearing arm of the lever Z" in engagement with the cam E and the parts are so arranged and timed and the trend of the working peripheral surface of the cam E is such that the blank-feeding tongs is swung to receive a blank into the.

position shown in dotted lines Fig. 1. against the action of the spring Z and the said spring swings the tongs from the said last-mentioned position into the position shown in solid lines, Figs. 1, 2 and 3, and the shape of the said cam is also such as to accommodate the endwise movement of the shaft K and connected tongs in the last-mentioned positionof the said tongs, and when the said tongs has been brought into the last-mentioned position shown in Figs. 2 and 3, the shaft K is shifted endwise and forwardly, as will hereinafter appear, to feed the blank into a recess U formed in the top of the adjacent portion of the anvil where the blank is operated upon by the cooperating anvil. and hammer.

In the position shown in Figs. 2 and 3 and in solidlines Fig. 1, the blank-feeding tongs holds the blank directly forward of the forward end of the anvil-recess U, and consequently to accommodate the forcing of the separated ends u of the blank toward each other over the anvil preparatory to the entering of the anvil-recess U by the said ends of the blank the blan'kfeeding tongs are swung upwardly somewhat or elevated after the insertion of one of the said ends of the blank into the link last welded or formed and preparatory to the delivery of the blank into the anvil-recess, as will hereinafter 'inore clearly appear. 7

The shaft K and consequently the blank" feeding tongs upon their lateral movement into the position shown in Figs. 2 and 3 are actuated endwise forwardly toward the anvil, andduring the forwardly endwise movement of the blank-feeding tongs an end of the blank borne by the said tongs is inserted into the last-made link 0 held by chain-holding tongs hereinafter described and arranged at the left-hand side of the GHClVVlSB travel of the blank-feeding tongs, and A (see Figs. 1, 3, 4, 1 0' and 12) reprethe sleeve 0;.

sents the body-portion or stock of the chainholdmg tongs, and a, the aws of the last mentioned tongs.

The means for effecting the forwardly endwise movement of the tongs-bearing shaft K to actuate the blank-feeding tongs forwardly as required to add the blank to the last-made chain-link held by the chainholdim tongs comprise the following :The shaft i (see Figs. 1, 2, 1.1 and 13) extends from the blank-feeding tongs which are arranged at one side of the table 1 as shown through the boxes Z and Z and a suitable distance beyond the opposite side of the table and provided at the last-mentioned side and a suitable distance from the table with a collar K fixed to the shaft in any ap proved manner.

A spiral spring K is mounted and confined on the shaft K between the collar K and the adjacent box Z and acts to retain the shaft and consequently theblank-feeding tongs in their rearward position. The shaft K is arranged to be actuated forwardly against the action of the spring K by the head a formed upon the forward end of a push-bar at which is shiftable endwise forwardly and rearwardly relative to the rear end of the shaft K and has bearing in a sleeve ru loosely mounted on and shiftable endwise of the said bar. A s iral. spring is mounted and confined on t e bar a between the head w and The bar a is provided with a pin :0 which engages a slot 1r" formed in and extending a suitable distance longitudinally of the sleeve The in .1 engages the for- Ward end wall of the said slot in the rearward position of the sleeve. The spring x, which is somewhat stiffer than the spring K, acts to push the bar forwardly, and the engagement of the pin 9; with the forward end wall of the slot limits the forward movement of the bar independently of the bar-embracing sleeve x A shaft y, arranged horizontally and parallel with the cam-shaft E, is located below the sleeve and supported from members of the framework J. The shaft 2 is operatively provided with a depending arm 1/ which is operatively connected by a rod 3 with an upright tilting lever 3 fulcrumed, as at t/ horizontally and parallelly with the cam-shaft E, to the framework J. The lever if is rovided at its upper end and above the fu crum if with a roller y which engages the working eripheral surface of a cam E with which t e shaft E is operatively provided. The shaft y is also operatively provided with an upwardly projecting arm 1 which is operatively attached at its upper end to the sleeve r show-n pivoted, as at .r, to the arm 3 parallelly with the fulcrum 3 The arm 1 is provided with a projecting lug 1 which extends under the sleeve 1: and forms a seat or bottom bearing for the sleeve. A suitably applied spring g acts to retain the said sleeve .in its outer position and also acts to retain the roller 1 of the lever y in engagement with the cam E, which spring is shown attached. at one end to the lever near the fulcrum of the lever and at its opposite end to the framework J. The arrangeinent of the parts is such and the peripheral working surface of the cam E has such trend that as soon as the shaft K and connected blank-feeding tongs have been swung laterally into the position shown in Fig. 2 and in solid lines Fig. 1, the cam E actuates the lever if against the action of the spring g and in the direction required to oscillate the shaft y in the direction required to effect the forward movement of the sleeve as and pushbar a: and thereby result in the actuation of the tongs-bearing shaft K forwardly against the action of the spring K and far enough to connect the blank borne by the blankfeeding tongs with the link held by the chainholding tongs and bring the blank into position between two in'essure-exerting bars B arranged above the anvil-recess U and parallelly with the cam-shaft E at opposite sides respectively of the anvil, and the trend of the aforesaid surface of the cam-wheel E is furthermore such that the blank-feeding tongs are held in their forward position until the ends a of the blank have been properly forced toward each other by the bars B and until the work upon the blank by the harm mer G and anvil U has been completed, whereupon the tongs-bearing shaft K is rcndered free to be returned into its rear position by the spring K. i

The box at is supported as required to render it capable of being swung in a vertical plane as will hereinafter appear, and consequently the head a: of the push-bar J has the dimensions necessary to insure a proper engagement of the push-bar with the shaft K, and it will be observed that the spring a) affords relief to prevent breakage or injury to any member of the apparatus by any obstruction to the passage of the blank toward the anvil or into the anvil-recess U. in other words the bar a and spring LE3 form somewhat yieldable means for actuating the shaft K and consequently the blank-feeding tongs forwardly endwise toward the anvil. i

During the operation upon the blank by the bars B and blank-welding means and during the withdrawal of the last-made link from the anvil until the said link has been grasped by the chain-holding tongs the blank-feeding tongs have their jaws t arranged the one above the other and in the same plane vertically, as shown in Figs. 7, 8, 9, 11 and 13.

The chain-holding tongs, during the withdrawal of the last-made link from the anvil until the said link has been grasped and thereupon only held by the said tongs, have their jaws (1 arranged the one above the 130 other and in the smile plane vertically as shown in Figs. 9 and 10.

Y The chain-holding tongs are turnable, and also shiftable endwise as will hereinafter appear toward and from the endwise travel of the blank-feeding tongs, and-the arrangement of the parts is such that a link held by the chain-holding tongs to receive a blank when the chain-holding tongs are in their inner or forvard position, is arranged directly forward of the forward end of the anvil-recess U between the latter and the blank held by the blank-feeding tongs as shown in Figs. 1, 2 and 3. To freely accommodate therefore the passage of that end of the blank which is nearer to the chain-holding tongs into the last-made link held by the said tongs the blank-feeding tongs are given about an eighth of a turn to the left, as shown. very clearly in Figs. 3, 4 and 5, and somewhat swung or actuated laterally to the right by the portion a of the cam E (see Fig, 4) to shift the blank somewhat to the right or away from the chain-holding tongs as shown very clearly in Figs. 4 and 5.

The body-portion or stock A of the chainholding tongs is arranged horizontally and parallel with the cam-shaft E (see Fig; 1). The stock A (see also Figs. 7, 9, 10 and 12) has bearing in a correspondingly ,arranged box J which is formed upon or rigid. with any stationary object such, for instance, as projecting members J of the framework J.

The jaws a of the chain-holding tongs are pivoted, as at a, to the stock A horizontally and transversely of the stock and are consequently capable of swinging toward and from each other to close and open the tongs respectively. A suitably applied spring a which is interposed between the jaws a and between the axes and the outer or grasping ends of the jaws, acts to retain the jaws swung apart and consequently open.

The chain-holding tongs are actuated into their forward or inner position to receive the last-made link as soon as the said link has been withdrawn from the anvil by the blankfeeding tongs as shown in Fig. 9. Of course the jaws a are open, as shown in Fig. 12,'to receive the said link, and means for closing the said jaws immediately upon the reception by and between the aws of the link are provided and (see Figs. 1, 10 and 12) comprise'a rod D which is arranged centrallyand longitudinally of and has bearing in the stock A. Both the stock A and rod D move endwise together during the endwise actuation of the stock A but the rod D is also shiftable endwise independently of the stock A when the latter is in its forward or inner position. Each jaw a is provided with a rearwardly projecting arm a", and the adjacent and forward or inner end of the rod D tapers and in the open or nongrasping position of the jaws a extends somewhat between the outer ends of the said jaw-arias and is therefore arranged to farther separate the said jawarms upon the forward or inward actuation of the rod independently of the stock A and thereby close the said jaws, as shown in Fig. 10, against the action of the spring (L The stock A of the chain-holding tongs extends through and a suitable distance beyond the outer end of the box J, and a collar A is mounted on and fixed to the said stock a suitable distance from the outer end of the said box. A spiral spring A is mounted and confined on the stock A between the box J and the collar A. The spring A acts to retain the stock A and consequently the chain-hold ing tongs in their rearward and outer or in operative position. The stock A is provided externally and adjacent the free ends of the jawarms a with a laterally projecting annular flange A and the said stock forward of the said flange is slotted longitudinally, as at A to accommodate the location and operation of the jaws a and their said arms. In the forward or inner position of the chain-holding tongs, as shown in Fig. 10, the flange A abuts against the peripheral surface of a suitably arranged antifriction roller f which is suitably supported from any stationary object as, for instance, an arm or bracket J rigid with the box J. The roller f limits the forward or inward movement of the chainholding tongs and constitutes an antifriction end bearing or stop for the stock A when the latter while in its forward or inner position is oscillated or turned to turn the chain-holding tongs," and I would here remark that the means forturning the chain-holding tongs (see Figs. 1 and 3) comprise cam-actuated mechanism and a spiral spring a for turning the said tongs in opposite directions respectively, and the said cam-actuated mechanism comprises a rod A which is operatively con nected at one end with the stock A at the flange A and at its other end with the upper end of an upright lever A which (see Fig. 3) is fulcrumed, as at a horizontally and parallelly with the cam-shaft E, to the framework J. The lever A is provided between its fulcrum and the rod A with a roller 0? which engages the working peripheral surface of a cam E with which the shaft E is operatively provided. The spring a acts to retain the roller a of the lever A in engagement with the cam E, which spring is shown attached at one end to the lever and at its opposite end to the framework J.

The rod D extends a suitable distance beyond the rear or outer end of the stock A of the chain-holding tongs, and a collar D is mounted on and fixed to the rod rearwardly of and a suitable distance from the stock A. A spiral spring D is mounted and confined on the rod D between the collar D and the rear or outer end of the stock A. The spring D acts to retain the rod Din its outer and inoperative position shown in Fig. 12 in which the greater portion of the tapered forward end of the rod is rearward of the jaw-arms a and the jaws a are open, as already indioated.

The outer end of the rod 1) (see Figs. 1, 7. 9, 10 and 12) is overlapped by one arm of a bell-crank lever D which is fulcru med vertically, as at D, to any station-arr object such, for instance, as a member of the framework J, and has its other arm operatively connected by a rod (Z (see Fig. 1) with an up right lever (Z which is fulcrumed, as at (l, horizontally and parallelly with the shaft E, to the framework J. The lever is provided with a roller (1* which engages the working peripheral surface of a cam E" with which the shaft E is operatively provided.

The spring E is stiffer than the spring A so that the latter will yield before the former, and consequently during the operation of the cam-actuated mechanism comprising the lever (Z, red at and lover D to actuate the rod 1) forwardly or irnrardly the stock A of the chain-holding tongs is actuated forwardly or inwardly against the action of the spring A until the stock comes in. contact with the stop-forming roller f, and the throw of the cam E is long enough to actuate the red 1) forwardly against the action of the spring 1")" as soon as the forward or inward movement of the stock A of the chain-moving tongs has been arrested by the roller or stopf, and the forward or inward movement of the rod D independently of the said stock results, as already indicated, in the closing of the jaws (1 of the chain-holding tongs. Obviously the spring A also acts to retain the roller c of the lever (Z in contact with the cam ll. The arrangement of the parts is such and the cam E has such shape and dimensions that the chain-holding tongs are brought into position to receive the last-made link upon the withdrawal of the said link from the anvil as shownin Fig. 0, and the jaws of the said tongs are actuated toward each other to grasp the link at the left-hand side As already indicated, the last-made link is arranged horizontally while in the anvil-recess U and during the feeding of the link from the anvil to the chain-holding tongs which have their jaws a arranged in the same plane vertically during the reception of the link by the chain-holding tongs, as already indicated, and the parts so arranged and timed. that the chain-holding tongs, after the reception by them of the link and preparatory to the insertion. into the said link of the link-entering end of the blank next to be fed to the anvil, are oscillated or turned, by the operation of the mechanism actuated by the cam l against the action of the spring o to cause the link to face laterally toward the approaching blank as shown in Figs. 1, 2 and 3 and'thereby to bring the opening in. the

link in )osition to receive the link-entering end of the blank, as shown in Figs. 4 and 5, and the link in its blank-receiving position leans somewhat toward the ap roaehing blank so that the upper portion of t 1e turned link is nearer the approaching blank than the lower portion of the said link and overhangs the link-entering end of the blank before the said end has entered the link and thereby facilitates and positively insures the proper entrance of the said end of the blank into the link. The parts are also so arranged and timed that the cam-actuated mechanism comprising the lover (1, red (X and lever 1) shall actuate the chain-holding tongs forwarclly or inwardly to receive the last-made link, that as soon as the link-entering end of the blank next to be welded has been inserted into the said link during the blank-feeding movement of the blank-feeding tongs the rod 1) is rendered free to move rearwardly or outwardly into its inoperative position and actuated into its said position by the spring I) so as to result in the actuation of the jaws a of the chain-holding tongs by the spring a" into their nongrasping or 0 )en and ino erative position to release the link which t 1ereupon hangs from the blank and is carried with the blank during the remainder of the blanle'feeding n'iovcnnen't of the blanle'feeding tongs, as shown in lligs. (S, 7 and 8, and. the blank-feeding tongs are swung upwardly somewhat, as shown .in Figs. 6 and 13, upon the release of the link by the claim-holding tongs during the said remainder of the said movement of the blank-feeding tongs so as to bring the blank into position over the anvil-recess U and between the pressureexerting bars B at the end of the said movement, as shown in Fig. 7, whereupon the said bars are operated to force the separated ends of the blank toward each other, as shown in Fig. S. The parts are also so arranged and timed that immediately upon the re ease of the last-made link by the chain-holding tongs and consequently 11)0l1 the delivery of the said link to the blank being fed to the anvil, the chain-holding tongs are rendered free to be turned by the spring a" into their position wherein their jaws a are arranged in the same plane vertically, as shown in Figs. 7, 8, 9 and 10, as required for the reception of the link into which the said blank is to be converted, and the blank-holding tongs, during the remainder of its blank-feeding movement after the said delivery of the link to the said blank from the chain-holding tongs, is turned, as will hereinafter appear, to bring the jaws t of the blank-feeding tongs into the same plane vertically, as shown in Fi 's. 6, 7, 8 and 13, as rec uired to cause the blank to properly enter the anvil-recess U during the delivery of the said blank to the anvil-recess, and the said jaws remain in their last-mentioned relative position until the link into which the said blank is to be converted has been formed and fed and delivered to the chain-holding tongs by the blank-feeding tongs, as shown in Figs. 9, 10 and 11, and released by the last-mentioned tongs.

The pressure-exerting bars B are arranged in line endwise. The bars B are simultane ously reciprocated endwise and are moved toward or from each other to operate upon or release the blank. The bars B have bear ing in boxes U arranged at the sides of and rigid with the anvil. The bars B are actu ated toward each other by suitably supported cam-actuated bell-crank levers B against the action of suitably applied springs 12. That is, each bar B is operatively connected at its outer end with one arm of a bell-crank lever B which is arranged in a horizontal plane and fulcrumed vertically, as at Z), to any stationary object, such, for instance, as a member of the framework J, and has its other arm provided with a roller B which engages the working peripheral surface of a cam E with which the shaft E is operatively provided. Each spring I) is attached at one end to the connected lever B and at its other end to any stationary object such, for instance, as a member of the framework J. The arrangement of the parts is such the cams IE have such shape that immediately upon the actuation of the blank over and into position to descend into the anvil-recess U the levers B are actuated against the action of the springs b so as to effect the movement of the bars B toward each other into engagement with the outer side of opposite ends respectively of a blank and thereupon force the said ends of the blank together, as shown in Fig. 8, and the shape of the cams is furthermore such that immediately upon the forcing of the ends of the blank toward each other the bars B are separated by the springs b, whereupon the shaft K and consequently the blankfeeding tongs are swung in the direction required to lower the blank into the anvilrecess U preparatory to the delivery of the first blow upon the ends of the blank by the hammer V.

As soon as the blank has been brought into position within the anvil-recess U the hammer V is actuated to deliver four successive blows upon the blank to weld or unite the ends of the blank together. The hammer V (see Figs. 1 and 2) is arranged to swing in a vertical plane above the anvil U, being pivoted, as atV, horizontally and parallelly with the cam-shaft E to any stationary ob ject such, for instance, as a member of the framework J, and the hammer is operatively connected by a link V with an arm V of a shaft V which is arranged parallel with the cam-shaft E and a suitable distance below the hammer and supported from the said framework. The shaft V is also operatively provided with an arm V which is provided with a roller V engaged by a cam E with which the'shaft E is operatively provided, which cam has the shape required to cause the hammer to deliver four successive blows during each rotation of the cam-shaft. The hammer V is arranged to deliver itsblows by gravity and the arrangement of the parts and the trend of the working surfaces of the cam E are such that the hammer is raised preparatory to the insertion of theblank into the anvil-recess U and that immediately upon the delivery of a blank to the anvil the shaft V is oscillated in opposite directions alternately until the hammer has delivered four blows upon the blank.

To properly weld the ends of the blank together the hammer-blows should be alter nately delivered upon opposite sides of the blank, and hence means for giving the blank feeding tongs and blank to be welded a half turn in the interval of time between successive hammer-blows are provided and (see Figs. 1 and 6) preferably comprise a bevelgear 7c which is operatively mounted on the shaft K between the boxes Z and Z by the well known means of grooveand-feather, as at k, as shown in Fig. 11, and the groove of the last-mentioned means extends far enough longitudinally of the shaft, as at It, and arranged as required to accommodate the for wardly endwise movement of the shaft. The gear ll: meshes with a diametrically larger bevel-gear 12. arranged. under the shaft K and between the shaft and the turn-table Z and rests upon the latter. The gear a is twice as large diametrically and consequently has twice as many teeth as the gear 1?. The gear at is provided (see Fig. 11.) with a depending axle n arranged centrally of and having lateral bearing in the turn-table Z. The gear it (see Fig. 1) is provided at one side with a laterally projecting arm n which is operatively connected by a connecting rod n with one arm of a bell-crank-lever n which (see Figs. 1 and 6) is fulcrumed, as at n, horizontally and parallelly with the cam-shaftE, to any stationary object such for instance as a member of the framework J and has its other arm provided with a roller a which engages the peripheral working surface of a camE operatively mounted on the shaft E, and the said lever is held with its roller in engagement with the said surface by a suitably applied spring n which is shown attached at one end to the said lever and at its other end. to the framework J.

The tongs-bearing shaft K and consequently the blank-feeding tongs must be swung or moved upwardly to bring the blank out of the anvil-recess U in order to permit the turning of the blank as hereinbefore described, and the means whereby the swinging or movement of the tongs upwardly from the anvil is effected preparatory to each half turn given to the tongs between successive blows of the hammer V (see Figs 1 and 13 comprise a cam E" operatively mounted on the cam-shaft E and having a peripheral working surface engaged by the roller m" borne by the upper end of an upright lever m fulcrumed at any suitable point between its ends, as at M horizontally and parallelly with the said shaft, to any stationary object such, for instance, as the framework J and is operatively connected at its lower end by a connecting rod m with an arm m depending from and operatively connected with the box m. The box m (see Figs. 1, 2 and 13) is pivotally supported from any stationary object, such, for instance, as the framework J, having two laterally projecting arms m arranged at opposite sides respectively of the box and provided with trunnions m which are arranged horizontally and in line endwise and parallel with a cam-shaft E and have bearing in members J of the framework J, and the arm m is operatively connected with one of the trunnions m. A suitably applied spring 'm acts to retain the roller-bearing lever m in engagement with the cam E" and conse quently acts to retain the tongs-bearing shaft K in its downwardly swung or horizon tal position. The spring m is shown attached at one end to the lever m above the fulcrum of the lever, and at its other end to the stationary framework J. The arrangement of the parts and the trend of the working surfaces of the cams E and E are such that as soon as the hammer G between successive blow-delivering movements of the hammer has swung upwardly far enough to permit the raising of the blank-bearing tongs above the anvil far enough to accommodate turning of a blank the said tongs is given a half turn. The shape of the cam E is furthermore such that the tongsbearing shaft and consequently the blanlefeeding tongs are turned in opposite directions alternately upon successive upward movements of the blank upwardly from the anvil so that the hammer-blows are delivered upon opposite sidesof the blank alternately. The shape of the cam E is such, as already indicated, that the blank-feeding tongs and consequently the blank are raised during the feeding movement of the tongs after the insertion of the link-entering end of the blank into the link held by the, chain-holding tongs and the release of the link by the last-mentioned tongs so that the blank then carrying the said link is brought into position over the anvil-recess U Where, as already indicated, the ends of the blank are operated upon by the bars B preparatory to the lowering of the blank into the said recess. The shape of the cam E is also such that the blank as soon as operated upon and thereupon released by the bars B is lowered into the anvil-recess U.

As afinished link, having withdrawn from the anvil by the blank-feeding tongs, is grasped by the chain-holding tongs, as shown in Figs. 9, 10 and 11, during the rearwardly endwise movement of the shaft K and connected tongs the sleeve 8 is withdrawn from between the jaw-arms t" by means which preferably comprise an arm Q operatively mounted (see l igs. 1 and 11) on a shaft Q which is supported from the framework =1 and arranged horizontally and parallelly with the cam-shaft E about midway between the turn-table Z and the stationary framework J. The shaft Q is operatively provided at one end with an upwardly projecting arm Q operatively connected by a rod Q, with a lever Q" which is fulcrumed, as at Q, horizontally and parallelly with the shafts Q and E, to the framework J and bears a roller Q which engages the peripheral working surface of a cam E operatively mounted on the cam-shaft E. The rollerbearing lever Q is continually held in en gagement with the said surface of the cam l by a suitably applied spring Q which is shown attached at one end to the link Q and at its other end to the framework J. The parts are so arranged and the cam E has such shape that immediately upon the withdrawal of a link from the anvil to the position shown in Figs. 9, l0 and ll the arm Q of the shaft Q comes into engagement, with a forwardly facing annular shoulder 30 formed on the sleeve 3, as shown in Fig. 11, and thereupon actuates the sleeve rearwardly against the action of the spring Q far enough to permit the blank-feeding tongs to open and release the said link.

The trend of the cam ii is furthermore such that imn'iediately upon the release of the finished link by the blank-feeding tongs dur ing the withdrawal of the link from the anvil and after the said link has been grasped by the chain-holding tongs, the said shaft K and connected blai'ikd'coding tongs are given an eighth of a turn as required to present the next blank to be received by the blank-feedin tongs in proper position relative to the last-made link held. by the chain-holding tongs. I would also remark that preferably the shape of the cam E is also such that the shaft K and connected blank-feeding tongs dwell momentarily during the grasping by the chaiinholding tongs of the link withdrawn from the anvil by the blai'ik-feeding tongs, although the release of the link by the last-mentioned tongs and the grasping of the link by the chain-holding tongs may be simultaneous. The making of cams of any particular shape or con'i'iguration to produce or permit any special movements of camactuated members or mechanism at predetermined times is so well understood inthe arts that illustration in greater detail or extended description of the shape or operation of the cams hereinbefore referred to is not considered necessary in this specification. I would also remark that the second last made link (see Figs. 9, and 11) during the withdrawal of the last-made link 0 from the anvil strikes against the jaws a of the chain-holding tongs and is driven or pushed by the said jaws out of their way in the direction of the anvil and to the opposite side of the last-mentioned link so that the said second last-made link does not interfere withthe proper grasping of the last-made link by the said jaws.

What I claim is 1. In a chain-making machine, the combination, with blank-welding means, tongs adapted to feed a link-blank to and movable endwise toward and from the blank-welding means, means for forcing the separated ends of the blank toward each other preparatory tioned tongs that one end of the blank during the actuation of the blank-feeding tongs toward the blank-welding means shall pass into the said link, means whereby the chain-holding tongs are caused to release the said link upon the passage of the said end of the blank into the link, means whereby the chain-holding tongs are operated to grasp the last-made link upon the withdrawal of the said link by the blank-feeding tongs from the blank-welding means, and means whereby the blank feeding tongs are caused to release the last mentioned link upon the grasping of the link by the chain-holding tongs.

2. In a chain-making machine, blank welding means, tongs adapted to feed a linkblank to and movable toward and from the blank-Welding means, means for forcing the separated ends of the blank toward Each other preparatory to the welding operation, chain-holding means for presenting the last link added to the chain in such position rel-ative to the blank borne by the first-mentioned tongs that one end of the blank during the actuation of the blank-feeding tongs toward the blank-welding means shall pass into the said link, means whereby the chain-holding means are caused to release the said link upon the passage of the said end of the blank into the link, means whereby the chain-holding means are operated to grasp the last made link upon the withdrawal of the link by the blank -i eeding tongs from the blank welding means and hold the link until the reception of a blank by the link, and means whereby the blank-feeding tongs are caused to release the last-mentioned link upon the grasping of the link by the chainholding means.

3. In a chain-making machine, blankwelding means, laterally movable turnable tongs adapted to feed a link-blank t0 and 1 shiftable endwise toward and from the blankwelding means, and means for forcing the ends of the blank toward each other preparatory to the welding operation, endwise movable turnable chain-holding tongs, means whereby the chain-holding tongs and the blank-feeding tongs are relatively turned to cause the last link added to the chain to be presented by the chain-holding tongs in such position relative to the blank borne by the blank-feeding tongs that one end of the blank during the actuation of the blank-feeding tongs toward the blank-welding means shall pass into the said link, means whereby the chain-holding tongs are caused to release the said link upon the passage of the said end of the blank into the link, means whereby the chain-holding tongs are operated to grasp the last-made link upon the withdrawal of the link by the blank-feeding tongs from the blank-welding means and hold the link until the reception of a blank by the link, and means whereby the blank-feeding tongs are caused to release the last-mentioned link upon the grasping of the link by the chainholding tongs.

4. In a chain-making machine, blank welding means, laterally movable turnable blank-reeding tongs adapted to feed a linkblank to and shiftable toward and from the blank-welding means, said tongs being sup ported as required to render them capable of being swung in a vertical plane; means for actuating the blank-feeding tongs toward and from the blank-welding means; means for turning the blankd eeding tongs; means for swinging the tongs in a vertical plane; means for forcing the separated ends of the blank toward each other preparatory to the welding oneration, turnable chain holding tongs shiftable relative to the travel of the blank-feeding tongs for presenting the last link added to the chain in such position relative to the blank borne by the blank-feeding tongs that one end of the blank during the actuation of the blankeeding tongs toward the blank-welding means shall pass into the said link means for shifting the chain-holding tongs relative to the travel of the blankfeeding tongs; means for turning the chainholding tongs; means whereby the chainholding tongs are caused to release the said link upon the passage of the aforesaid end of the blank into the said link, means whereby the chain-holding tongs are operated. to grasp the last-made link upon the withdrawal of the link by the blank-feeding tongs from the blank-welding means and holai the link until the reception of a blank by the link, and means whereby the blank-feeding tongs are caused to release the last-mentioned link upon the grasping of the link by the chainholding tongs.

5. In a chain-making machine, blankwelding means, laterally movable turnable tongs adapted to feed a link-blank to and movable endwise toward and from the blankwelding means, means for actuz'tting the blank-feeding tongs relative to the blankwelding means, means for forcing the sepa- 5 rated ends of the blank toward each other preparatory to the welding operation, turn- 1 able chain-holding tongs arranged at one l side of and shiftable endwise toward and from the line of endwise travel of the blankfeeding tongs and adapted to present the last link added to the chain in such position relative to the blank borne by the blankfeeding tongs that one end of the blank during the actuation of the blank-feeding tongs toward the blank-welding means shall pass into said link; means for actuating the chainholding tongs endwise, means for turning the chain-holding tongs, means whereby the chain-holding tongs are caused to release the said link upon the passage of the aforesaid end of the blank into the said link, means whereby the chain-holding tongs are operated to grasp the last-made link upon the withdrawal of the link by the blank-feeding ton s from the blank-welding means and hold the link until the reception of a blank by the link, and means whereby the blankfeeding tongs are caused to release the lastmentioned link u on the grasping of the link by the chain-holc ing tongs.

6. In a chain-making machine, blanle weldingmeans, tongs adapted to feed a linkblank to and movable toward and from the blank-welding means, means for actuating the blank-feeding tongs to feed the blank to the blank-Welding means, means for withdrawing the blank-feeding tongs from the blank-welding means, means for forcing the se arated ends of the blank toward each ot er, preparatory to the welding operation, a chain-holding device movable toward and from the line of travel of the blank-feeding tongs and adapted to present the last link added to the chain in such position relative to the blank borne by the blank-feeding tongs that one end of the blank during the actuation of the blank-feeding tongs toward the blank-welding means shall pass into the said link; means whereby the chain-holding device is caused to release the said link upon the assage of the said end of the blank into the link; means whereby the chain-holding device is operated to grasp the lastmen tioned link upon the Withdrawal of the link by the blank-feeding tongs from the blankwelding means and hold the link until the reception of a blank by the link, and means whereby the blank-feeding tongs are caused to release the last-mentioned link u on the grasping of the link by the chain-holc ing device.

7. In a chain-making machine, blank- Welding means, a device for feeding the blank to the blank-welding means and effecting the removal from the blank-welding means of a link formed by the operation upon the blank by the blank-welding means, means for forcing the separated ends of the blank toward each other preparatory to the welding operation, chain-holding tongs arranged at one side of and shiftable endwise toward and from the line of travel of the blank-feeding device and adapted to present the last link added to the chain in such position relative to the blank borne by the blank-feeding device that one end of the blank during the actuation of the blank-feeding device toward the blank-welding means shall pass into the said link, means for actuating the chain-holding tongs endwise, means whereby the chain-holding tongs are caused to release the said link upon the passage of the aforesaid end of the blank into the link, means whereby the chain-holding tongs are 0 erated to gras the last-made link upon the withdrawal 0" the link by the blank-feeding device from the blank-welding means and hold the link until the reception of a blank by the link, and means whereby the blank-feeding device is caused to release the last-mentioned link upon the grasping of the link by the chain-holding tongs.

8. 111 a chain-making machine, the combination, with blank-welding means, a de vice for feeding the blank to the blankwelding means and effecting the removal from the blank-welding means of a link formed by the operation upon the blank by the blank-welding means, and means for forcing the separated ends of the blank toward each other preparatory to the welding operation, of chain-holding tongs arranged at one side of and shil'table endwise toward and from the line of travel of the blank-feeding device and turnable in its forward position to present the last link added to the chain in such )osition relative to the blank borne by the blank-feeding device that one end of the blank during the actuation of the blank-feeding device toward the blank-welding means shall pass into the said link, means for actuating the chainholding tongs endwise, means whereby the chain-holding tongs are caused to release the said link upon the passage of the aforesaid end of the blank into the link, means whereby the chain-holding tongs are operated to grasp the last-made link upon the withdrawal of the link by the blank-feeding device l'rom the blank-welding means and hold the link until the reception of a blank by the link, and means whereby the blank-feeding device is caused to release the last-mentioned link upon the grasping ol' the link by the chainl1olding tongs.

9. In a chain-making machine, the combination, with blank-welding means, a device for feeding the blank to the blank-welding means and effecting the removal from the blank-welding means of a link formed by the operation upon the blank by the blank- Welding means, and means for forcing the separated ends of the blank toward each other preparatory to the Welding operation, of turnable chin-holding tongs arranged at one side of and shiftable endwise toward and from the line of travel of the blank-feeding device and adapted in its forward position to'present the last link added to the chain in such )osition relative to the blank borne by the b ank-feeding device that one end of the blank during the actuation of the blank feeding device toward the blank-welding means shall pass into the said link, means for actuating the chain-feeding tongs en'd wise, means for turning the chain-holding tongs, means whereby the chain-holding tongs'are caused to release the said link upon the passage of the aforesaid end of the blank into the link, means whereby the chainholding tongs are operated to grasp the lastinade link upon the Withdrawal of the link by the blank-feeding device from the blankwelding means and hold the link until the reception of a blank by the link, and means whereby the blank-feeding device is caused to release the last-mentioned link upon the grasping of the link by the chain-holding tongs.

10. In a chain-making machine, the combination, with blank-welding means, a device for feeding the blank to the blank-welding means and effecting the removal from the blank-welding means of a link formed by the operation upon the blank by the blankwelding means, and means for forcing the se arated ends of the blank toward each ot er pre aratory to the welding operation, of turna le chain-holding tongs arranged at one side of and shiftable endwise toward and from the line of travel of the blankfeeding device and adapted in its forward position to present the last link added to the chain in such position relative to the blank borne by the blank-feeding device that one end of the blank during the actuation of the blank-feeding device toward the blankwelding means shall pass into the said link, means for actuating the tongs endwise, means for turning the tongs, means for limiting the forward movement of the tongs, means whereby the tongs are caused to release the said link upon the passage of the aforesaid end of the blank into the link, means whereby the tongs are operated to grasp the last-'made link upon the withdrawal of the link by the blank-feeding device from the blank-welding means and hold the link until the reception of a blank by the link, and means whereby the blank feeding device is caused to release the last-mentioned link upon the grasping of "the link by the tongs.

11. In a chain-making machine, the combination, with blank-welding means, a device for feeding the blank to'the blankweld ing means and effecting the removal from the blank-welding means of a link formed by the operation upon the blank by the blankwelding means, and means for forcing the ends 'of the blank toward each other preparatory to the Welding operation, of turnable chain-holding tongs arranged at one side of and having a limited range of movement endwise toward and from the line of travel of the blank-feeding device and adapted to be turned in its forward position to present the last link added to the chain in such osition relative to the blank borne by the b ank feeding device that one end of the blank during the actuation of the blankfeeding device toward the blank-welding means shall pass into the said link, means for actuating the tongs endwise, means whereby the tongs are caused to release the said link upon the passage of the aforesaid end of the blank into the link, means whereby the tongs are operated to grasp the lastmade link upon the withdrawal of the link by the blank-feeding device from the blankwelding means and hold the link until the reception of a blank by the link, and means whereby the blank-feeding device is caused to release the last-mentioned link upon the grasping of the link by the tongs.

12. In a chain-making machine, the combination, with blank-welding means, a device for feeding the blank to the blank-weld :ing means and effecting the withdrawal from the blank-welding means of the link formed by the operation upon the blank by blankwelding means, and means for forcing the ends of the blank toward eachother preparatory to the welding operation, of turnable chain-holding tongs arranged at one side of and shiftable endwise toward and from the line of travel of the blank-feeding device and adapted to be turned in its forward position to present the last linkadded to the chain in such position relative to the blank borne by the blank-feeding device that one end of the blank during the actuation of the blankfeeding device toward the blank-welding means shall pass into said. link, cam-actuated mechanism for actuating the tongs endwise in one direction, means for actuating the tongs in the opposite direction, means for turning the tongs, means whereby the tongs are caused to release the said link upon the passage of the aforesaid end of the blank into the link, means whereby the tongs are 0 )erated to grasp the "last-made link upon tie withdrawal of the link by the blanle feeding device from the blahk-welc'ling means and hold the link "until the reception of .a blank by the link, and means whereby the blank-feeding device "is caused to release the last-mentioned link upon the grasping of the link by the tongs.

13. In a chain-making machine, the combination, with endwise movable blank-feeding tongs, of chain-holding tongs arranged at one side of and shiftable endwise toward and from the line of endwise travel of the blank-feeding tongs and having a suitably sup orted stock and link-grasping jaws pivota y supported from the stoc and adapted to be relatively operated to grasp or release a link; means for operating the jaws, and means whereby the blank-feeding tongs are 0 erated to feed or convey relative to the chain-holding tongs.

14. In a chain-making machine, the combination, with endwise movable blank-feed ing tongs, and means for effecting the endwise movement of the said tongs, of chainholdin tongs arranged at one side of and shiftab e endwise toward and from the line of endwise travel of the blank-feeding tongs and having a suitable supported stock and link-grasping jaws su ported from the stock and relatively mova le to grasp or release a link; means for effecting the endwise movement of the chain-holding tongs; means act-- ing to retain the aforesaid jaws open; means for operating the jaws to grasp a link entered between the jaws; means whereby the lastmentioned j aw-operating means are rendered inoperative upon the passage into the said link of an end of the blank to be fed by the blank-feeding tongs to the chain-holding tongs, and means whereby the blank-feeding tongs are caused to release the last-made link conveyed by the blank-feeding tongs to the chain-holding tongs upon the grasping of the link by the said jaws.

15. In a chain-making machine, the combination, with endwise shiftable laterally extending oscillatory blank-feeding tongs, which tongs are supported to render them capable of being swung laterally and in a vertical plane; means for effecting the end wise movement of the said tongs; means whereby the blank-feeding tongs are swung laterally; means whereby the blank-feeding tongs are swung in a vertical plane, and means for oscillating the tongs, of a suitably supported oscillatory chainholding tongs arranged at one side of and shiftable endwise toward and from the line of endwise travel of the blank-feeding tongs; means for efiecting the endwise movement of the chainholding tongs, and means for oscillating the chain-holding tongs.

16. In a chainnnaking machine having a turnable stock provided at one end with two link-grasping jaws pivotally supported from the stock and relatively movable to grasp or release a link, which aws are each provided with an arm projecting toward the rear end of the stock; a box affording bearing to the stock; means for turning the stock; a stop for limiting the rearward movement of the chain-holding tongs; means acting to retain the chain-holding tongs in their rearward position; means acting to retain the aforesaid jaws open; a rod extending through the stock and adapted during the forward movement of the rod to actuate the jaw-arms to cause the jaws to grasp a link entered between the jaws; a spiral spring mounted and confined on the red at the outer end of the stock and acting to retain the rod in its outer position and instrumental in transmitting motion to the stock during the inward movement of the rod; means for actuating the said rod inwardly, and a stop arranged to limit the forward movement of the stock before the end of the forward movement of the rod.

17. In a chain-making machine, the combination, with blank-welding means comprising an anvil provided in the top thereof with a recess adapted to receive the blank to be 0 erated upon and open at the front of the anvi a device for feedmg the blank to the blank-we1ding means and effecting the withdrawal from the blank-welding means of a link formed by the operation upon the blank by the blank-welding means, and means for forcing the ends of the blank together preparatory to the welding operation, of chainholding tongs arranged at one side of and shiftable endwise toward and from the line of travel of the blankdeeding device and adapted in its forward position to hold a link in line horizontally wlth the aforesaid recess and turnable to present the last link added to the chain in suc position relative to the blank borne by the blank-feeding device that one end of the blank during the actuation of the blank-feeding device toward the blankwelding means shall pass into said link; means for actuating the tongs endwise; means for turning the tongs; means whereby the tongs are caused to release the said link u )on the passage of the aforesaid end of the blank into the link and hold the link until the reception of a blank by the link; means whereby the tongs are caused to grasp the last-made link upon the withdrawal of the said link by the blank-feeding device from the anvil, and means whereby the blankfeeding device is caused to release the lastmentioned link upon the grasping of the link by the said tongs.

In testimony whereof, I sign the foregoing specification, in the presence of two witnesses.

PHILANDER H. STANDISH. Witnesses:

C. H. DORER, Vro'ro'a C. LYNCH.

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