US1998272A - Blank feeding mechanism - Google Patents

Description

w. w. CRILEY BLANK FEEDING MECHANISM.

Fi led Aug. 20} 1952 3 Sheets-Sheet 1 INVENTOR i) (7 I RNEY April 16, 1935.

April '16, 1935.

w. w. CRILEY Y 1,998,272

BLANK FEEDING MECHANISM I5 Sheets-Sheet 2 Filed Aug. 20., 1952 Fig.2

a IZBENTOR ZQJAIZZLW v I BY W74 A'TT RNEY April 16, 1935. w. w. CRILEY 1,993,272

BLANK FEEDING MECHANISM I 7 Filed Aug. 20, 1932 s Sheets-Sheet s AT ORNEY Patented'Aprnlfi, 193

I l l UNITED STATES PATENT OFFICE 1,998,272 BLANK FEEDING. MECHANISM Y Winiamw; easy, Cleveland, ohio Application August 20, 1932, Serial No. 629,653. I 2i Claims.' oi. -12

This invention relates to a blankfeeding mecha capacity for handling, with certainty, large, anism designed to transfer blanks from a feed de-' y blhnkS (W being equally W611 adapted livery point or station to a work stationand to w fl s g n a Smaller Size to handle S a discharge the same therefrom. v b1anks), and,in short, of a character not only 5 A primary object of theinvention is to con- Unlikely t Out f Order, but to e an 5 struct a simple, efficient, fully automatic .o eratp at life corresponding t t at f th h ading device of this character, capable of feeding machine ts ft blanks successively toa plurality of stations such A ill further object is to arran to h ndl as the work stations, that is, placeswhere the the blanks s t y y be v d q i kly 10 blanks are to be held and work erformed upon n yet without J k i n fr m tation to 10 the same, and then to discharge them from the station, and W t in y W y interfering with 1 t t t I i the timing'or causing any delays in'the operation The feeding mechanism is designed tograsp 0131119 h a other, m c ne with which oblong blanks or blanks longer than their width, feeding mechanisms y be m ned- '15 such for example as bolt blanks, and a further A still further specific object is t s arranges object of the invention is to so arrange such a Ph of opposftd pp g elements pab e of feeding mechanism that it may cooperate l in grasping a plurality o blanks m neous y; timed relation with a bolt heading machine or the and i advancing them ch 0 the next station, a like, and which shall be capable of certainty oi and one of h Shall be cooperative With n operation, andibe simple in .eonstructiomand'a of the reeeivinsielements or d srt 20 further object is to ISO design as 0 require in position start no changes, or atleast'a' minimum of changes in aeportion of, its return movement to P a modern bolt heading machine of the character, up t blank, and While the other of t having gripping dies embracing the shank of the gripping l m is one Side away from 05 blankin two or more'positions during roughing d clear of e blanks during s s a t or and f nishing heading operations of heading dies. return movement I l A more specific object of the invention is to Another Specific" Object is to provide a Simple so arrange a mechanism that it may handle or n efficient arrangement of p jat G h move a plurality of blanks successively, that is, nism r V cal y moving the gr pi lg' s v :10 on each'movement or the feeding mechanism a for op and closing them upon the blanks i sofresh blank is taken from the feed delivery point, the'relaltive timed mOVementS, mQVing 0118 while the blank or blanks previously acted upon a away from the blanks ahead 0f t e other, by the dies are advanced one station, that is and l from a common actuating jmeans are either from a roughing station or from the finishranged n Compact m a d adapted to be coning station, and dropped or suitably discharged. nettedv With driving 011B of-the moving Th b di t of th i ti Shown in elements of the header or other machine to which the accompanying drawings is intended for use he feeding mechanism s attached.

with very large heading machines acting on I Itwill be understood that many Changesand blanks automatically, and in connection with a at maybemede i u d pa n f m 49 which are aiiorded many difficult mechanical the Sp l/T inventionproblems, inasmuch as blanks of several inche I Describing the illustrativeembodiment which in diameter, from a foot to several feet long, are S or la e ad h es n connection with to be fed successively'to the operating dies, and the illustrations of the accompanying draw-- must be presented thereto in such fashion as to ingS; l T be accurately positioned in the die. They must F g. 1, is aside elevation of thefeed n 11 be moved in precise timed relation to the recipan s n d i Operating p s i on the bed rocating opening and closing movements of the frame of a horizontal upsetting ma hine. respective die members. The gripping and car- Fig.2 is a plan view of the same, with a part rying means engaging the blanks must be arof the structure in the upper left of Fig.1 reranged so as not to interfere with the operation moved to show more clearly the cam and lever 50.

or require any special design or impair the funcmechanism. 7 I v 1 tion of the dies or other parts of the machine- Fig 3 is a ra e ta y sem -sectional view More specific objects-are to soconstruct the along the line 1-1 in Fig.'2.- I f 1 mechanism thatit may be capable of. being sim-. Fig. dis a fragmentary plan view along the ply manufactured, very durable in use and have. line II-IIin Fig. -3. V

Using reference characters for convenience to describe the embodiment of my invention illustrated in the accompanying drawings, the upsetting machine is designated in its entirety at A, and the group of parts of the feeding mechanism comprising the cam and lever group, designated in their entirety at B, are compactly arranged in a supporting housing III which hasbeen shown in this case for convenience as mounted on a cover plate I2 of the upsetting machine A. V The group of parts comprising the transfer mechanism, designated in their entirety at C, are supported and actuated by the levers,v

55, i8 and connecting them with the cam and lever group B. The hopper mechanism, desig-.

nated in its entirety at D, may be suitably mounted on a horizontal face I of the upsetting 'machine A. The cooperative action of the whole mechanism with the upsetting machine is as follows:

Heated metal blanks W are fed into a hopper IB of the hopper mechanism D at a point I8 and roll down an incline plane 20 where the first of these blanks engages a pair of escapement pins 22 and stops ata position designated WI. With the upsetting machine in operation, the forward and backward movement of the heading ram 26 causes a rocking o! oscillating motion of an auxiliary shaft 23, which may be accomplished by any of the well-known methods. As, shown, this shaft 28 is connected to a rocker arm 30 through,

an arm 32, link 34 and arm 36, and its action is so timed thatduring the backward or withdrawal stroke of the heading ram 25 the auxiliary shaft 28 rocks in the direction to cause the rocker arm 38 to force the escapement pins 22 downwardly andthe cooperating escapement pins 23 upwardly, and during the forward or upsetting stroke of the ram theauxiliary, shaft 28 rocks in the direction tocause the upper pair of pins22 to be forced upwards and the lower pair of pins 23 downwards. The movement of the escapement pins is such that they clear the'blanks in their extreme upward position, and it will therefore be obvious that the blanks'are thereby fed, one by one, down'the inclined plane 28 to'a shelf or shoulder 38 where their motion is arrested and theyare supported in a horizontal position. As the blanks fall onto the shelf 38 the heading ram 26 has withdrawn to its extreme position. As the ram starts its forward movement, a pusher pin 40, shown, for example, as secured in an extended portion of the ram 26 (see Fig. 3) engages the blank'and moves it forward to the position indicated at W2 where one end engages a stop 46.

While the hopper. mechanism D is shown in the several views disposed with respect to the transfer. mechanism C,such that blanks are pushed from left to right, as viewed in Fig. 3, in position to be gripped by the gripping fingers I I8 and I 32, it is to be understood that this is not the only arrangement which I may use. For example, I may arrange the hopper'feeding mechanism D, as shown in Fig. 3,, to the right of the transfer mechanism C, so that blanks are pushed from right to left to be in position to be gripped by the gripping fingers H8 and I32. In a like manner I do not wish to be limited'to the exact method employed in pushing the blanks from the shelf 38 to the position indicated at W2 but it is to be understood that any suitablemeans may be employed. For example, instead of having a pusher pin 40 secured in an extended portion 42 of the heading ram 26, I may use anysuitable means.

such for example as a set of levers, either actuated by the ram 25 or independently thereof, and this mechanism may be adapted to push the blanks from left to right or from right to left, depending upon the location of the hopper mechanism D with respect to the gripping or transfer mechanism C. It will be understood, of course, that if the blanks are fed from right to left, as viewed in Fig. 3, the topmost portion of the stop 45 would be removed and a suitablestop arranged at the left end of the blank. 1 I

In a like manner I do not wish to be limited to the exact arrangement of escapement means shown for releasing the blanks from the hopper mechanism one by one, but I may use any suitable design within the scope of the appended claims. lThis escapement means need not necessarily be. actuated by a rocking shaft such as that indicated at 28 but may be actuated, for example, by a system of levers, a rack and gear, a toggle mechanism, or the like, all of which may be eitherco-operative with the movement of the heading ram and actuated therefrom, or may be actuated from entirely independent means.

As shown, the blank at W2 is thereafter moved laterally to the left, then downwardly and inwardly to the right'by the gripping fingers H8 and I552, where it is presented to the first upsetting die in the position, indicated at W3. The fluger"! I8 then recedesfurther to the right to clear the blank-while the finger I32 continues to press it into the cavity of the upsetting dieas both fingers rise to complete another transfer cycle. These operations may be accomplished as will now be described. 1

A shaft A8 of the cam and lever mechanism B is suitablyconnected to the driving mechanism of the upsetting machine, and disposed on and secured to the shaft are cams illustrated'at 50, 5! and 52. As shown, the cam 50 is adapted to cause the transfer mechanism C to be moved upward and downward through the action thereon of a roller 54 secured in the end of a rocking lever 55. This lever 56 is pivotally mounted on a shaft 58', which may be secured in bearings as at 60, on the housing I0. The other end' of this lever 56 is bifurcated to receive transfer arms 62 and 64 pivoted tothe lever 56 as by a pin 65. The arm 54 may be secured to the pin 65 by a set screw 67, while lever 56 and arm 62 are free to swing thereon. The roller 54 in lever '56 may be forced against the cam 58 by action of a spring 68 pressing against a stop III and acting through a spring rod I2, pivotally secured in an arm 14 rigid with the lever 56. The other two cam elements 5| and 52 actuate the gripping elements of the transfer mechanism C. As shown, the cam 55 actuates the carrying arm 52 through a roller I6, a rock lever '18, a connecting rod 80, an eye 82 and pin 83 to cause short lateral'movements thereof. The cam 52 actuates the carrying arm 64 through a roller 84, a rock lever'86, a connecting rod 88, eye and pin 9 I to cause corresponding short lateral movements. The pressure of roller I6 against cam 5| is maintained by action of spring 92 pressing against the stop 94 and acting through spring rod 96 pivotally secured in the extension 98, of the rock lever I8. In a like manner roller 84 is pressed against cam 52 by action'of spring IIIfl'pressing against stop I0 and acting through spring rod I02 and arm I94. The rock levers I8 and86 are pivotally mounted on the shaft 58 and are shown curved downward (see Fig. 1) to avoid interference with a reinforcing member I08 extending longitudinally of the upsetting machine." The connecting rods. andBBf may be adjustably connected to the eyes 82 and 90, respectively, by having their ends threaded, as at H0, and being screwedinto eyes 82 and 90 with looking nuts H2 and H4 to prevent loosening.' These eyes in turn are pivotally connected 'to the. transfer arms. A'suitable removable cover Secured to the carrying arm 64 by bolts I28 is.

an adjustable supporting block I30 for the companion gripping finger I32. This latter may be a spring finger but may be otherwise as will be hereinafter discussed. An adjusting bolt I34 acts in like manner to the bolt I22 as just described in connection with the finger I i8.

Assuming that the first heated blank has been delivered to the shelf 38 and pushed against stop to the position W 2, as the ram 26 starts to withdraw again to the extreme open position the coupling of the cam shaft 48 with the driving mechanism, and the-timing of cams 50, 5!

and 52 on the shaft 48, are such that the'raising and lowering cam 50 is passing through a dwell period and the gripper finger actuating cams 5| and 52 have just actuated thelevers l8 and 86 to cause the fingers H8 and I32 to. grip the blank, the transfer mechanism C then being in the position shown in Fig. 1. Asthe operation continues, thefinger spreading and closing cams 5i and 52 actuate the rock levers 18 and 86, respectively, to cause the gripping fingers I I8 and i32 to move together in gripping position, then laterally to the left (Fig. 1) just far enough for the blank in position W 2 to clear the supporting shelf 38. The housing around the support 38 is cut away at I36 to permit this movement of the blanks (see Fig. 3). Following this first pick up movement dwell periods occur on both gripping action camsbl and 52, but the raising and lowering cam 50 now actuates lever 56 to cause the transfer mechanism to move downward in a recessed portion I38 of the stationary gripper or'clamping die I40 and a recessed portion I39 of the moving gripper or clamping die I42, which latter die at this junctur'e has just reached its extreme open, position.

When the blank held by gripping fingers I I8 and I32 reaches the point just opposite the first upsetting stage of they stationary gripper or clamping die i l-o, the lowering stops by a dwell period occurring on cam 50 and the finger actuating cams 5i and 52 then actuate rocklevers l8 and 86 to cause the fingers H8 and I32 to move the blank to the right thereby presenting it to the cavity in the stationary die I40 at position W3. V

Thereafterthe gripping finger H8 is moved laterally to the right just far enough to clear 'the blank, by action of the lateral actuating cam 5| acting throughrock lever 18. Both gripping fingersl I8 and I32 are then raised by action of the raising and lowering cam 50 acting through rock levers 56, while the finger I32 continues to press against the blank due to a dwell period on its actuating cam 52 thereby holding the blank in the cavity of the clamping die I40 by a sliding action over the blank during theupward move:

ment of the transfer mechanism 1C. This per-' mits a more rapid actionof the whole feeding mechanism as it is not necessary for the gripping finger to retain hold of the blank until the gripper dies close.- While I have indicated that the fingers H8 and I32 maybegin their upward motion before the closing of the gripper or clamping dies I49 and M2, it is to be understood that while this is very advantageous in many cases the invention is not to be limited to this particular operation, but that by suitably designing the finger actuating cams 5i, and 52 I may cause these fingers to retain hold of the blank until the gripper or the clamping dies MD and M2 have closed and may thereaftereither release the blank or hold it for any predetermined length of time, as desired. While the transfer mechanism is ascending the gripper dies MG and. I42 close the upsetting operation.

As the transfer mechanism 0 reaches its exand the heading ram 25 moves in to complete treme upward position a dwell period occurs on raising and lowering cam 5t, while finger actuating earn 5! actuatesrock lever 18 to cause the gripperv finger H8 to move laterally to the left until the finger-engages the newly presented blank, indicated again at W2, in its upper notch I26. The transfer mechanism is now in the position shown in Fig. 1 and ready to repeat the sequence of operations just described. While the gripper fingers H8 and I32 are gripping the blank in their extreme upward position the heading ram 28 and the movable die I42 start moving to their extreme openpositions.

As the upsetting machine continues to operate ing the notches I26 in gripping finger I I8 and as the transfer mechanism G movesupwardly and downwardly, that not only is a new blank selected and presented to the gripper dies for the first, upsetting operation on each downward movement of the transfer mechanism, but that the blank previously presented to the gripper dies is pickedup and presented to other points, as indicatedat W t and W5, in thegripper dies for successive upsetting operations; As the last of these operations is completed and the movable gripper or clamping die M2 moves away. from the stationarygripper or clamping die I48, the finished piece, indicated as at W5,; is ejected from the die I by-the extension I46 of gripper finger H8 as itmoves to the left prior to the downward movement of transfer mechanism C. This ejection occurs before the movable gripper or clamping die I42 closes, andthe finished piece drops clear of the dies.

In Fig. l'the stop 46 has been removed to more clearly show the gripper fingers H8 and H52, and other positions that the blanks may assume during subsequent upsetting operations. In Fig. 3 the clamping dies I40 'and- I42 are shown recessed intermediate of their ends to receive the gripper fingers I I8 and I32, but it is to be understood that they may be recessed in any other suitable manner as for example, adjacent the right end as viewed in Fig. 3, or the gripper fingers H8 and I32 may be entirely exterior of the clamping dies, as forexample to the right of them, either of which may be'accomplished by cated in the; drawings, notchthe finger similar to that shown for finger I it, and attach it to the carrying arm 64 by an intervening spring mem-, ber, so that it may press against the blank under spring tension during its upward motion. 01' further, I may make the finger I32 a duplicate of that of finger I I8 and so design the actu ating cam 52 so that when the blank is presented to the cavity of the stationary gripper or clamping die M9 the finger 32 is given a short lateral movement to the left, as viewed in Fig. 1, so that as the transfer mechanism C moves upwardly both fingers will clear the blanks. Again, I may interchange fingers l 18 and I32, as shown in the drawings, that is, I may make the finger to the right in Fig. l of spring construction, or spring actuated, and the finger to the left of rigid structure, in which case the finger actuating cams 5| and 52 may be designed to impart movements to the fingers in any manner so desired. For example, the fingers may be made to retain hold on the blank during the closing of the gripper dies Ml? and M2 and for a period of time thereafter during the heading operation, or they may release the blank as soon as the gripper dies have closed.

It will be seen that the action of the transfer mechanism in co-operation with an upsetting die is to cause a substantially rectangular movement of the blanks and the grippin fingers, and that the finger actuating mechanism may be so designed as to either start the return upward motion of the fingers before the gripper or clamp-- ing dies close, or cause the fingers to retain hold of the blank untilthe dies close and then start their upward movement, or retain hold of the blank during a portion of or all of the upsetting operation, as desired. It will also be seen that not only are new blanks presented to the first upsetting dies but that the fingers are adapted to advance previously acted upon blanks to subsequent dies, and to thereafter eject the finished product from one of the dies.

I claim:

1. The combination with a pair of gripper dies adapted to open and close to grip a blank fed thereto, of means for presenting a blank to said dies while open and thereafter to release said blank as said dies close, said means including a pair of fingers having a common arcuately moving pivot, and each of said fingershaving associated therewith an independently actuated controlling means to cause independent movement of each finger.

2. The combination with relatively movable dies having a plurality of complementary opposed cooperating recesses therein which constitute die stages, of means for presenting a heated blank to the first of said die stages'said means being also adapted to transfer at the same time previously acted upon blanks in the otherdie stages to a subsequent die stage and to simultaneously eject the finished blank from the last die stage, said means including a pair of fingers having a common pivot, and controlling mechanism for'independently actuating each of said fingers.

3. The combination relatively movable dies having complementary opposed recesses therein which constitute a die stage, of means including a pair of gripper elements for presenting a blank to said die stage by a combined horizontal and vertical movement of said elements, one of said gripper elements pressing against and holding the blank in the recess in one of said dies for an interval during a vertical movement of both gripper elements.

4. The combination with relatively movable dies having complementary opposed recesses therein which constitute a die stage, of means including a pair of fingers for presenting a blank to said die stage, one of said fingers pressing against andholding the blank in the recess in one of said dies for a predetermined interval of the return movement of said finger for the next blank.

5. The combination with relatively movable dies having a pli 'ality of complementary opposed recesses therein which constitute die stages, and including a roughing die stage and a finishing die stage, of means including apair of fingers for presenting blanks to the roughing die stage and at the same time transferring blanks from the roughing die stage to the finishing die stage, said fingers being pivotally joined at one end and independently actuated intermediate both ends, one of said fingers being adapted to eject the blank from the finishing die stage simultaneously with transfer of a blank thereto.

6. The combination with an upsetting machine having a pair of gripper dies with complementary recesses therein, one of said dies being movable and having an open and a closed position, of means including a pair of mutually pivoted, independentlycontrolled fingers for passing between said dies in said recesses when the movable die is in its open position to present a blank thereb-etween, and thereafter to release said blank when the movable die moves to its closed position, and to eject said blank from said dies when the movable die moves to its open position.

7. The combination with an upsetting die, of a pair of fingers for presenting blanks to said die, said fingers being pivotally secured together at one end, means for actuating said fingers intermediate their ends to grip a blank with their free ends, said means being adapted to cause simultaneous lateral movement of said fingers at one time and independent lateral movement of each finger at other times to cause said fingers to grip a blank and present it to said die and thereafter release it.

8. The combination with an upsetting die of means for receiving heated blanks, means for feeding the blanks from said receiving means one at a time, and moving and separately controlled cpening and closing fingers for gripping the blanks and presenting them to the upsetting die and thereafter releasing the blanks during the action of the die.

9. The combination with an upsetting die, of an inclined plane for receiving heated blanks, means for restraining the blanks on said inclined plane and releasing them one by one to roll down the inclined plane, a shelf for arresting the motion of said blanks as they roll from the inclined plane, means for causing a lateral movement of the blanks, and means including a pair of mutually pivoted, independently controlled fingers for gripping the blanks on said shelf and presenting them to the upsetting die, each of said fingers being independently operated, whereby one of said fingers is subsequently caused toeject a blank from said die when both of said fingers are gripping a fresh blank on said shelf.

10. The combination with an upsetting machine having a ram movable in a forward and backward direction, ofmeans for receiving heated blanks, said means having an inclined plane down which said'blanks may-roll by gravity effect,

means for restraining the movement of said blanks on said inclined plane and for releasing one blank during each backward stroke of said ram, and means including a pair of mutually I 750' the upsetting die by a rectangular movement of "said fingers.

llffne combination with a pair of clamping dies,-'each of said dies having a recess in one face co-extensive with its depth, saiddies having an open and 'close'dposition, means including a pair of fingers for presentingblanks tosaid clamping dies while in the open position by a combined horizontal and vertical movement of said fingers into the recessed portion of said dies.

f 12. The combination with relatively movable "dies having complementary opposed: recesses therein which constitutea die stage, of I a hopper for receiving heated blanks, said hopper being inclined so'that the blanks are normally urged toward one end of said hopperby gravity effect, means for restraining the blanks in said hopper and for releasing them one by one, a rigid shelf disposed at one end of said hopper and adapted to receive the'blanks as released, means including a stop for moving the blanks endwise. along the shelf against the stop, and independently moving blank gripping fingers for lifting the blanks from the shelf laterally and presenting them to the die stage by a combined vertical and horizontal movement, one of said fingers pressing against and holding a blank in the recess in one of said dies during the return vertical movement of said finger.

13. In combination with a die adapted to receive a blank fed thereto, means for presenting a blank to said die, said means comprising a pair of fingers having a common fulcrum, means for actuating each of said fingers independently of.

the other finger and of movementof the fulcrum to cause said fingers to grip a blank, and means for moving the fulcrum and for moving the fingers relative to the fulcrum whereby a blank a blank to said die stage, said means comprising a pair of mutually pivoted fingers, means for,

' actuating said pivot along an arcuate path, and

means for moving at least one of the fingers relative to the pivot to cause said fingers to grip a 1 comprising a pair of fingers having a common moving support, each of said fingers being movable relative to said support and having associated therewith independently actuated controlling means to cause movement of the finger independent of movement of the support and of the other finger. I

16. In blank feeding means adapted to be em-v ployed with divided relatively movable dies and including a die having a recess in a face thereof adapted to receive a blank, the feeding means comprising a pair of fingers for presenting a blank to said die, the fingers beingreciprocally movable in a plane generally parallel to the plane 'of'the face' of the die, and in a plane generally perpendicular to the plane of the face of-the I die, one of said finger elements pressing against and holding a blank in said die recess a portion of the time during movement in one direction of said fingers in the plane generally parallel to the 'plane'of the face of the die.

17. In blank feeding means adapted to be employed-with a die having a series of blank receiving stations each adapted to receive a blank, successive steps in a series of operations being performed at each successive station in the seriesiof stations, the feeding means being adapted to present blanks'to the first of said-stations and to transfer blanks in each station'to the successive stations in the series of stations,'the' blank feeding means comprising a moving supportja pair .Iof' fingers carried by said support, each of said, fingers being movable relative to the support and having independently actuated controlling. means to effect movement of the'fingerindependent of movement of the support and of the other finger to cause the fingers to grip and release a plurality of blanks, movement of the support effecting feeding of-blanks to the first blank receiving station and the transfer of blanks from one blank receiving'station to the next adjacent stationin 7 said series of stationsr 7 18. me, machine of the class described, a pair of dies having a plurality of complementary recesses therein, one of said dies being movable relative to the other of 1 said dies and having an open and a closed position and, work feeding mechanism for transferring work blanks from one of said recessesto anotherwhile the .dies are in the; open position, said means comprising a pair of fingers having an initial position, one of said fingers having a recess therein adapted to receive a blank to be transferred, said finger recess being substantially in alignment with a recess in the dies when-the finger is in the initial position, the fingers being movable from the initial position when the dies are open to bring the finger recess into alignment with another recess in the die whereby a blank may betransferred from one die recess to another, the recessed fingerbeing mov able out of engagement with the work blank prior to the closing of the dies, the other of said fingers being adapted to .yieldingly and slidably press against the work blank and hold it in the second die recess intermediate the disengagement of the finger and the closing of the dies.

19. In a machine of the class described, a pair of dies having a plurality of complementary recesses therein, one of said dies being movable rela-i tive to the other of said dies and having an open and a closed position, work feeding mechanism for transferring work blanks from one of said recesses to another while the dies are in theopen position, said means comprising a pair offingers having an initial position, one of said fingershavclosing of the dies, the other of said fingers being adapted to engagethe work blank and hold it in the second die recess intermediate the disen- '20. In a machine of the class described, feed :mechanism comprising a pairof fingers, a movable support for said fingers, the fingers being 'movable'by the support, one of the fingers being movable relative to the support, means for-moving the support and independent means for movingthe movable finger, the means for moving the support comprising a member pivotally mounted on a first axis spaced from the support and-being pivotally connected to the support on a second .axis spaced from the first axis, the means for moving the finger relative to the support compris- ,ing a member pivotally secured to the finger on a third axis and pivotally mounted on a fourth 21; In -a machine of the class described, feed distance.

gage-merit of the finger and the'closing of the dies.

mechanism comprising a'pair of fingers, a movable support for said fingers, the fingers being movable by the support, one of the fingers being movable relative to the support, means for moving the support and independent means for moving the movable finger, the means for moving the support comprising a member pivotally mounted on a first axis spaced from the support and being pivotally connected to the support on a second axis spaced from the first axis, the means for -moving the finger relative to the support comprising a member pivotally secured to the finger on, a third axis and pivotally' connected on a fourth axis to an actuating member pivotally mounted on the first axis, the first and second axes, and the third and fourth axes being spaced apart substantially the same distance, and the first andfourth axes and the second and third axes being spaced apart substantially the same WILLIAM w. CRILEY.

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