US1106571A - Tandem press. - Google Patents

Description

A. J. LEWIS.

TANDEM PRESS.

APPLICATION FILED MAR.15, 1913.

1,106,571 v Patented Aug. 11,191&

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TANDEM PRESS.

APPLICATION FILED MAB..15, 1913.

1,106,571. Patented Aug. 11,1914.

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TANDEM PRESS.

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ARTHUR J. LEWIS, 0F STRATFOBD, CONNECTICUT, ASSIGNOR TO THE BAIRD MACHINE COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF CONNECTICUT.

TANDEM PRESS.

Specification of Letters Patent.

Patented Aug. ill, 19141.

To all whom it may concern:

Be it known that LARTHUR J. LEWIS, a citizen of the United States, residing at Stratford, county of Fairfield, State of Connccticut, have invented an Improvement in Tandem-Presses, of which the following is a specification.

This invention relates to presses, more particularly to those of the type employin a plurality of punches, dies, formers, or other tools designed to operate successively upon the same piece of work.

In presses of this type, for example those employed in forming articles out of sheet metal, it has been customary to mount the several tools in the same reciprocating head or gate and to move the work step-by-step from one tool to the next to cause said tool to operate successively thereon, a new piece of work being introduced at each operation, so that at each reciprocation of the gate all of the tools carried thereby are caused to operate simultaneously upon diiierent pieces ofworlr in various stages of completion.

By reason of the fact that the several steps in the process of producing a finished article usually require the the exertion of difierent degrees of'power, since the work in its various stages ofi'ers' different degrees of resistance to the several tools, the reaction of the tools is unevenly distributed over the head or gate. The eccentric stresses thus induced produce a tendency on the part of the gate to tilt in its guideways, causing uneven wear and carrying the punches or other tools out of proper alinement with the dies or other members with which they cooperate.

The present invention has for its ob ects to overcome the difliculties above mentioned and also to provide a construction which will be strong and durable, which will permit the tools to be placed in close proximity to one another, which will facilltate the removal and replacin of the tools, and

which otherwise will be e cient and convenient'in use.

l/Vith these and other b ects 1n view the p invention comprises the provision of a plu- 'rality of independently operated gates, equal innumber to the number of tools employed, each carrying aseparate tool. The

gates are arranged immediately adjacent one another and are mounted to recipro- Gate in separate guide-ways which, however, are preferably all mounted in the same upright portions of the machine frame.

' The invention further comprises the provision of certain other mechanisms and instrulnentalitics whereby the operation of machines of this character is facilitated.

A preferred form of the invention is illustrated in the accompanying drawings, it being understood however that the invention is not limited to the precise construction shown, but that many changes may be made therein without departing from the scope of the invention as defined by the claims hereunto appended.

In said drawings, Figure 1 is a front elevation and Fig. 2 a side elevation, both partly broken away, of a machine constructed in accordance with the invention; Fig. 3 is a vertical section on the line 3-3, Fig. 1; Fig. 4 is a detail elevation of the rear gate with the tool removed; Fig. 5-is a horizontal section on the line 5-5, Fig. 3; Fig. 6 is a detail vertical section of the lower portions of the gates, taken on a substantially central plane extending through the machine from front to rear; Fi 7 is a detail elevation of the lower portion of the front gate, and Fig. 8 a similar view of the lower portion of the rear gate, both views showing the tools in place on the gates;

Fig. 9 is a plan view of a portion of the carrying mechanism; Fig. 10 1s a vertical section on the line 1010, Fig. 9; Fig. 11 is a vertical section on the line l111, Fig. 10.

15 denotes the machine frame, said frame including apair of integral uprights 16 connected at their upper ends by a preferably integral top piece or cap 17. Arranged immediately ad acent one another and guided for vertical movement in the uprights 16 are a plurality (herein shown as two) of gates 18 and 19.

Said gates 18 and 19 are formed on their edges with V-shaped flanges 20 (see Fig. 5) which are received in correspondingly -sha ed grooves in guides 21 secured to the uprights 16 by bolts 22. Preferably one of the guides 21 of each pair is arranged to be adjustable in the corresponding upright 16 to compensate for wear, and

to this end is provided with slots 23 through which the corresponding bolts 22 pass, said guide being movable when said bolts are loosened by means 6? adjusting screws 24.

denotes a power shaft journaledin the uprights 16 and provided with a belt pulley 26 and a fiy wheel 27. I

28 denotes a pinion fixed upon the shaft '25 and meshing with a gear 29 on a shaft 30, alsojournaled in the uprights 16.. The gates 18 and 19 are independently operated, the one by the shaft 30 and the other or others from one or more shafts 31, also journaled in the uprights 16 and connected with the shaft 30 by gears 32. j j

H As herein shown the gate 18 carries a punch 33 cooperating with a recess 34(see Fig. 10) in a die 35 to punch outa disk from a strip of sheet metal fed to said die. The die 35 is held in a die block 36 mounted on a bolster plate 37 supported by a portion of the frame 15. a y

38 denotes a stripper plate located above the die 35 and secured to the die block 36 by screws 39.

40 (see Figs. 6 and 7) denotes a plunger workingwithin the punch 33 and cooperating with a reduced portion 41 of the opening in the die 35 to bend upwardly the edges of the disk cut out'by the punch 33. t

The particular formation of the die is of course not of the essence of the invention. Inmany instances, the die may beforined without the reduced portion 41, a blank being cut from a strip of metal as just described and then carried through the die between the end of the plunger and a holding rod presently to be described.

' The punch 33 is held in place by a set screw 42in a block 43-having a dove-tail connection with the gate 18. As herein shown the gate 19 carries a punch or-former 44 which cooperateswith a die '45 to further shape the article produced by the punch 33 and plunger 40. The former 44. is carried by a block 46 having ears 47 (see Fig. 8) which are slotted to receive bolts 49 by which said block 46 is secured to the gate 19. The die is held in a die block 50 mounted on the bolster plate 37. j v

The gate 18 is reciprocated from the shaft. 30 by'the following means: 51' (see Figs. 1 and 3) denotes b'olts passing through por 'tions of the gate 18 and held in adjusted position in said gate by screw sleeves 52 and nuts 53, the gate being "recessed to afford spaces for said sl'eeves'and nuts. By adjustingthe sleeves 52 and nuts 53 the stroke of the punch 33 may be varied. The bolts 51am provided with heads 54 to which are bolted guide :inemb'ers or arms 55 which extend upwardly and cooperate with guides 56 on the top member 17. 57 denotes brackets boltedto the arms 55 and in -which are journaled rollers 58. '59 denotes siinilar rollers ournaled in the heads 54 of the bolts 51. The rollers 58 and 59 engage opposite sides of earns 60 on the shaft 30.

: The plunger 40 is secured to or formed integral with a second plunger 61 guided for vertical movement in a bore 62 infthe said gate being suitably recessed to receive.

said pitman; In order to permit adjustment of the stroke of the former 44 the pitman 68 is preferably made in two parts connected by a threaded joint j 71 (see Figs. 1 and 2) denotcsfeed rollers adapted to feed sheet material to the space between the die 35 andstrip'per plate 38,

said rollersbeing operated by a pawl and ratchet mechanism 72connected by a rod 7 3 with an adjustable crank pin 74 on a crank disk 75 mounted on the end of the shaft 30. This feed mechanism specifically forms no part of the presentjinvention, and being of [a general type well known in the art will not bedescribed in detail herein. I

For carrying the partly finished work from the die 35 to the die 45 the following mechanism is provided, reference being had particularly to Figs. 9, 10 and 11: 76 denotes a slide mounted to reciprocate in guides 77 on a bracket 78 bolted to the frame 15. Pivoted at 79 to the slide 76 are a pair of grippers 80provided with preferaliily detachable gripping jaws 81 'b'oltedthereto. The slide 7 6 is movable to carry the operative ehd of the jaws 81 from a position directlybeneath the die 35 (whose opening extends entirely therethrough so that the plunger 40 can force the partly finished artiole therefrem into the jaws 81) to a position directly overthe opening in the die 45. To this end the following mechanism is provided; The slide 76 is provided with a downwardly projecting pin 82 extending through a slot in the bracket 7 8.- 83 denotes a sleeve sliding on the pin 82 and Provided with trunnion's 84 by which it is pivotally' connected to a bifurcatedafrm 85secured to "a, rock shaft'86w 87 Fig-5,2 and 10) denotesa second'arni fixed to the. shaft 86 and having at its" outer end slot 8 8 in which a slide carrying a pivot pin 89 is adjustably positioned by means of an adjusting screw 90. 91 denotesajconnecting rod pivoted'at its lower end to the pivot 89 and carrying at its a p-trend rollers 92 which engage a canes on the shaft .31, said connecting rod 91- being slotted t its upper end to jreceive said shaft, whereby said roan guided and the rollers 92'held iii-proper cooperative relationship to -the cani 93. By

moacn of the pivot 89 the movement of the slide 76 may be varied. 94.- denotes an adjustable stop screw carried by a plate 95 bolted to the bracket 78 to limitthe movement of the slide 76 toward the left in Figs. 9 and 10. 96 denotes an adjustable stop plate carried by the bracket 78 and cotiperating with a stop plate 97 on the slide'76 to limit the movement of said slide toward the right. 98 denotes a second slide guided on the slide 76 for movement longitudinally thereof. 99 denotes a cam plate secured to the slide 98,

as by a screw, and provided with oppositely inclined cam slots arranged to receive studs 100 onthe grippers 80, said studs being preferably provided with cam rollers. The arrangement is such that movement of the slide 98 toward the right (as shown in Figs. 9 and 10) on the slide 76 will cause the jaws 81 to be closed, while movement in the opposite direction will cause said jaws to be opened. Said slide is moved toward the right to close the jaws 81 by means of a spring 101' secured atone end to the cam plate 99 and at the opposite endto a plate 137 connecting the pivots 79 of the grippers 80. The slide 98 is moved in the opposite direction against the tension of the spring 101 to open the jaws 81 by means of a bell crank lever 102 pivoted at 103 to a plate 104 secured to the slide 76. The lever 102 is provided at the extremity of one arm with a slot to receive a pin. 105 projecting from the slide 98, 'and at the extremity of the other arm with a roller 106. The roller 106 cooperates with a head 107 on the end of a rod 108 guided to slide longitudinally in a suitable bore in one of the uprights 16. The rod 108 is held against turning in its bore by means of a bifurcated lug 109 secured to the upright 16 and embracing the head 107., The head 107 is of suflicient length to remain in engagement with the roller 106.

throughout the travel of the slide 76, and movement thereof inwardly toward. the bracket 78 causes the lever 102 to be rocked upon its pivot in the proper direction to open the jaws 81 against the tension of the spring 101. This movement is caused by a screw 110 which engages the end of the rod 108 and is carried by one end of a lever 111 .(see Fig. 2) pivoted at 112 to a bracket 113 secured to one of the uprights 16. At its opposite end the lever 111 carries a roller 11 cotiperating witha cam 115 on the end of the shaft 31.

116 denotes a follower or holding rod, the upper end of which is adapted to eoiiperate with the lower end of the plunger 40 to hold the partly finished article in place thereon after it has been forced outof the opening in the die 35, and to insure its proper positioning between the gripping jaws 81. The rod 116 is connected at its lower end to an arm 117 fast on a rock shaft 118 which is journaled in the frame 15 and in a' bracket 119 secured thereto. At its end the shaft 118 has fixed thereto an arm 120 connected by a spring 121 with a suitable portion of the frame. The action of the spring 121 is normally to hold the rod 116 elevated and in a position to engage the partly finished article on the end of the plunger 40 when the latter is depressed.

122 denotes a connecting rod pivoted at one end to the arm 120 and at the other to a bell crank lever 123 pivoted 9.11124; to one of theuprights 16 and carrying a roller i125v which cooperates with a cam 126 on the shaft 30. Oscillation of the lever 123 by the cam 126 causes the rod 116 to be depressed to release the work held thereby on the end of the plunger 10.

127 denotes an 'ejecting rod adapted to force the completely finished article from the recess in the die 15. Said rod 127 is connected atits lower end to an arm 128 fast on a rock shaft 129 which carries at its outer end a second arm 130. 131 denotes a spring secured at one end to the arm 130 and at the other to the frame 15 and whose function it is normally to depress the rod 127. In order toelevate the rod 127 to eject the article from the die at the proper time, there is provided a lever 132 pivoted at 133 to one of the uprights 16, said lever carrying at one end a roller 134 codperating with the cam 135 on the shaft 30 and connected at the opposite end, by a rod 136, with the arm 130.

The complete operation of the machine is as follows: Power applied to. the pulley 26, as through a suitable belt (not shown), causes the shaft 25 to be continuously rotated and, through the pinion 28 and gears 29 and 32, to rotate the shafts 30 and 31. The stock, as for examples. strip of sheet metal, is fed by the rollers 71 into the space between the stripper plate 38 and the to of the die 35. The cams 60 on the shaft 30, acting through the rollers 58 and 59 and bolts 51, cause the gate 18 to descend, whereupon the punch 33 coiiperating with the recws 34; in the die 35 punches a suitable blank from the stock. Immediately thereafter the crank 65 on the shaft 30, actingthrough the pitman 64, depresses the plunger 10 and forces the blank into and through the restricted portion 41 of the opening in the die 35. As the blank is forced through the die it is engaged and held upon the end of the plunger 40 by the. rod 116 which is held elevated by the spring 121. The slide 76 is at this time substantially in the position shown in Figs. 9 and 10.v At substantially the time at which the blank is forced through the die 35 the cam 115 permits the lever 111 to rock and release the end of the rod 108 whereupon the spring 101 moves the cam plate 99 to cause thejaws 81 to close upon the blank. The holding'rod 116 is immediately depressed by the cam 126 acting through the lever 123, rod 122, farm 120, rock shaft 118, and arm 117. The cam 93 acting through the rod 91, arm 87, rock shaft 86, arm 85, sleeve 83, and pin 82, thereupon moves the slide 76 toward the left, causing the jaws 81 to carry the blank into a position directly over the die 45. Thereupon the crank 67 on the shaft 31, operating through the pitman 68, depresses the gate 19 and causes the punch or former 44 to force the blank into the recess in the die 45. At substantially the same time the cam 115, acting through the lever 111, screw 110, rod 108,-head 107, and lever 102, moves the cam plate 99 to open the jaws 81, while the cam 93, acting through the instrumentalities above enumerated, returns the jaws 81into their initial position beneath the die 35 so as, to receive another blank therefrom.

It will be understood that the gate 18 has meanwhile been returned to its initial position and that the two gates pass, through their complete cycles of operations simultaneously, the tools carried thereby operating upon two blanks at each complete cycle of the machine. 'After the punch 44 has risen, the earn 135, acting through the lever 132, rod 136, rock shaft 129 and arms 128 and 130, elevates 'the rod 127 to eject the finished article from the recess in the die 45.

By reason of the fact that the tools 33 and 34 are carried by separate gates independently operated, it will be seen, that all eccentric stresses upon the gates will be eliminated and also that the tools may be more easily removed and replaced than in a construction in which these tools are all carried by the same gate. By arranging the gates, as shown herein, immediately adjacent one another in a direction from front to rear of the machine (i. e., in tandem) a each gate, means common to all the gates on each respective side for supporting said guides, and means for independently operating said gates.

2. In a press of the character described, in combination, a plurality of tool carrying gates arranged immediately adjacent one another in a direction from front to rear of the machine, means for guiding said gates, a power shaft at right angles" to the common center line of the gates,and means actuated by said shaft for independently operating said gates.

3. In a press of the character described,

in combination, a plurality of tool carrying 'mon center line of said gates.

5. In a press of the character described, in combination, a plurality of tool-carrying gates arranged immediately adjacent one another, means for guiding said gates, a'

lurality of shafts, and means on said shafts or independently operating said gates respectively.

6. In a pressof the character described, in combination, a frame comprising a pair of uprights, a' plurality of tool-carrying gates arranged immediately adjacent one another and guided in said uprights, a power shaft journaled: in said uprights, a plurality of operating shafts journaled in said uprights, --gea rs connecting said power shaft with one of said operating shafts, gears connecting said operating shafts with each other, and means onsaid operating shafts for independently operating said gates respectively. i a

7. In 'sf'piess of the character described, in combination, a pair of tool-carrying gates arranged immediately adjacent one another, means for guiding said gates, a pair of shafts, acrank on one of said shafts operatively connected with one of said gates, and a cam on the other of said shafts o eratively connected with the other of said 1 15 gates. I V 8. In a press of the character described, in combination, a frame comprising a pair of uprights, a top member connecting said uprights, a gate guided in said uprights, an 120 additional guide member carried exteriorly by said gate, and a guide carried by said top member and coiiperating with said exterior guide member.

9. In a press of the character described, in combination, a frame compris' a pair of uprights, a top member connecting said uprights, a plurality of tool-carrying arranged immediately adjacent one another and guided in said uprights, an additional 130 pair of additional guide arms guide member carried exteriorly by one of said gates, a guide carried by said top member-ahd-coiiperating with said exterior guide member, and means for independently operating said gates.

10. In a press of the character described, m combination, a frame comprising a pair of uprights, a top member connecting said uprights, a gate guided in said u rights, a etachably secured exteriorly to said gate, and a pair of guides carried by said top member and cotSperat-ing with said exterior guide arms.

11. .In a press of the character described, in combination, a frame comprising a pair of uprights, a top member connecting said uprights, a gate guided in said uprights, an additional guide member carried exteriorly by said gate, a guide carried by said top member and cotiperating with said exterior guide member, a shaft journaled in said uprights, a cam on said shaft, and rollers carried by said gate and guide member respectively and coiiperating with said cam.

12. In a press of the character described, in combination, a frame comprising a pair of uprights, a top member connecting said uprights, a gate guided in said uprights, a pair of guide arms detachably secured to said gate, a pair of guides carried by said top member and ootiperating with said guide arms, a shaft journaled in said uprights, a pair of cams on said shaft, and rollers carried by said gate and guide arms respectively and coiiperating with said cams.

13. In a press of the character described, in combination, a gate, a punch carried by said gate, a plunger operating in said unch, a shaft, a cam on said shaft, means or operatively connecting said cam and gate, a crank on said shaft, and means for operatively connecting said crank and plunger.

14. In a press of the character described, in combination, a pair of gates arranged immediately adjacent one another, means for guidin said gates, punches carried by each of sai gates, a pair of shafts, a crank on one of said shafts operatively connected with one of said gates, a cam on the other of said shafts operatively connected with the other of said gates, a plunger operati in the punch carried by said last-nam gate, and a crank on said last-named shaft operatively connected with said plunger.

15.- In a press ofthe character described, in combination, a die having an opening therethrough, a plunger cotiperatin with said die for forcing a blank throng said opening, and means for holding said blank in engagement with the end of said plunger after leaving said die.

16. In a press of the character described, in combination, a die having an opening therethrough, a plunger coiiperating with said die for forcing a blank through said opening, means for holding said blank in engagement with the end of said plunger after leaving said die, and means for operating said holding means to release said blank.

18. In a press of the character described, 1n combination, a die having an opening therethrough, a plunger coiiperating with said die for forcing a blank through said opening, a shaft provided with means for operating said plunger, means for holding said blank in engagement with the end of said plunger after leaving said die, and means actuated by said shaft for operating said holding means to release said blank.

19. In a press of the character described, in combination, a die having an opening therethrough, a plunger cotiperating with said die for forcing a blank through said opening, a shaft provided with means for operating said plunger, a spring-pressed rod for holding said blank in engagement with the end of said plunger after leaving said die, a cam on said shaft, a -lever operated by said cam, a rock shaft, an arm on said rock shaft connected with said rod, and a second arm on said rock shaft connected with said lever.

20. In a press of the character described, in combination, a plurality of tool-carrying gates arranged immediately adjacent one another, means for guiding said gates, means for independently operating said gates,'and means for carrying a blank from one of said gates to another.

21. In a press of the character described, in combination, a die having an opening therethrough, a plunger cotiperatin wlth said die for forcing a blank throng said opening, a second die, means for carrying said blank from said first-named die to sa d last-named die, and means for holding said blank in engagement with the end of said plunger after leaving said first-named dle and prior to its engagement by said carrying means.

22.7111 a press of the character described, in combination, a pair of dies, a reciprocating slide, a pair of gripping aws carried by said slide, a in pro ectmg from said slide, a rock sha an arm on said rock shaft, a sleeve sliding on said pm and pivoted to said arm, a second arm on said rock shaft, a cam, and a rod connected to said last-named arm and having means for engaging said cam.

- of said dies to the other, means for open- ,In a press of the character described, in ggpmbination, a pair of dies,a reciprocating; sligle,a pair of gripping jaws carried by said slide, apin projectingfrmn said slide,

a rock shaft, an jarmfon said rock shaft, a.

sleeve sliding ,cnlsaid pin and pivoted to Said arnna second arm on said rock shaft,

said last-named arm having a slot, a,slidc slots, and studs carried, by said jaws and I engaging said slots.

25. In a press of the character described, in' combination, a pair of dies, a reciprocating slide, a pair of gripping jaws carriedby said slide, means for rec procating said shde to cause said jaws to carry a blank from one ing and closing said jaws, a lever pivoted to said slide and operatively connected with said opening and closing means, and means for operating said lever.

96. In a press of the character described,

in combination, a pair of dies, :1 reciprocating slide, a pair of gripping jaws carried by said slide, means for reciprocating said slide to cause said jaws to carry a blank from one of said 'dies to the other, a second slide on said first named slide having cam slots, studs carried by said jaws and engaging said slots, a lever pivoted to said first-named slide and operativel connected with said last-named slide, an means for operating said lever.

27. In a press of the character described, in combination, a pair of dies, a reciprocating slide, a pair of gripping jaws carried by said slide, means for reciprocati said slide to cause said jaws to carry a bla from one of said dies to the other, means for opening and closing said jaws, a lever pivoted to said slide and operatively connected with said opening and closing means, and 2. Iongitudinally sliding rod having a head adapted to engage and o erate said lever in all positions of said slide.

28. In a press of the character described, in combination, a pair of dies, a reciprocating slide, a pair of gripping jaws carried by said slide, means for reciprocatin said slide to cause said jaws to carry a blan from one of said dies to the other, means for opening and closing said jaws, a lever pivoted to said slide and operatively connected with said opening and closing means, a longitudinally sliding rod having a head adaptedto tions of said slide, and means engaging and guiding said head for preventing saidrod rom turning.

29. In a ress of the character, described, in combination, a pair of dies, a reciprocatin slide a pair of gripping jawscarried by "said slidd, means for reciprocatin said slide to cause said jaws to carry a'blan from one i of said dies to the other, means for openmg' and closing said jaws, a levenpivoted to said slide and o eratively connected with said opening and c osing means, a longitudi--- nally sliding rod having a head ada ted to engage and operate said lever in a positions of said slide, a lever provided with means for engaging and operating said rod, and a cam for operating said last-named lever,

30. In a press of the character described, in combinat1on,a pair of dies, a reciprocating slide, a pair of gripping jaws carried by said slide, means for reciprocating said slide to cause said jaws to carry a blank from one of said dies to the other, a pin projecting from said slide, a rock shaft, an arm op said rock shaft, a sleeve sliding on said p111 and pivoted to said arm, a second arm on said rock shaft, acam, a rod connected to said. last-named arm and having means i for engaging said cam, means for opening and closing said jaws, a lever pivoted to said slide and operatively connected with said 1 opening and closing means, a longitudinally sliding rod having-a head adapted to engage and operate said lever in all positions of said slide, a lever provided with means for engaging and operating said rod, and a cam for operating said last-named lever.

31. In a press of the character described, in combination, a pair of dies, a pair of gates, tools carried by said gates respectively and coiiperating with said dies, shafts provided with means for operating said gates, mechanismfor carrying a blank from one of said dies to the other, and means on one of said shafts for actuating said carrying mechanism.

32. In a press of the character described, in combination, a die, a former cooperating with said die, an ejecting rod cooperating with said die, a rock shaft, an arm on said rock shaft connected with said rod a cam, a lever operated by said cam, an a second arm on said rock shaft connected with said lever.

33. In a press of the character described, in combination, a die, a tool coiiperating with said die, a shaft provided with means for operating said tool, a second die, a second tool cooperating with said second die, a second shaft provided with means for operating said last-named tool, an ejector-cooperating with said last-named die, mechamm for operating said ejector, and means on said fifst-named shaft for actuating said operating mechanism.

34. In a press of the character described, in combination, a die having an opening therethrough, a plunger cooperating with said die for forclng a blank through said opening, a shaft provided with means for operating said plunger, means for holding said blank in engagement with the end of said plunger after leaving said die, a second die, a former cooperating with said lastvnamed die, a second shaft provided with means for actuating said former, an ejector cofiperating with said lastaimned die, mechanisIn for carryinq a blank from one of said (lies to the other, devices on said first-named Shaft for actuating said holding'means and ejector, and devices on said last-named shaft for actuating said carrying mechanism.

In testimony whereof I affix my signature in presence of two witnesses.

ARTHUR J. LE\VIS. Witnesses:

lVALTER B. CAIN,

EDsoN H. BLATCHLEY.

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