US716611A - Bottle-cap-making machine. - Google Patents

Description

No. 7l6,6ll. Patented'naciza, I902.

B. ADRIANCE &.VA. CALLESUN. BOTTLE GAP MAKING MACHINE.

(Application filed May 20, 1902.) (No Model.) l6 Shasta-Sheet I.

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aminAJriance, @fia aw Amb s Cami-sun,

{WM A 27 I No. 7l6,6ll. Patentd Dec. 23. I902. B. ADRIANGE & A. CALLESON. BOTTLE GAP MAKING MACHINE.

(Application filed Kay 20, 1902.)

(No Model.) l6 Sheets-$haot 2.

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Witnesses nBenjaminAdriance,

Amos Calleson, I 6 2 %fom eyr 1 E NORRIS puns op PNOTD-LIWO.,WASHINGTON. n. c.

- No. 7l6,6ll. Patented Dec. 23, I902.

B. ABB'EANBE & A: cALuasou.

BBTTLE GAP MAKING MACHINE.

(Application filed Ray 20,1902.

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(No Model.)

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Inventoqs,

Ben amin W1tnesses= J Aclfianpe, Calleson Amos Ell/W Allonggz No. 7I6,6H. Patented m. 23. I902. B. ADRIANCE & A. CALLESON.

BOTTLECAP MAKING MACHINE.

(Application filed May 20, 1902.) (No Model.)

l6 Sheets-Sheet 4.

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l mull lll Witnesses:

Inventors LBen amin Addams,

, [Amos Callesan g V x Margy. A

Patented Dec. 23, I902; B. ADBIANGE & A. CALLESDNm BOTTLE CAP MAKING MACHINE.

(Application filed May 20, 1902.)

( N o M o d (a l l6 Sheets-Shani 5.

Inventors, Witnesses:

:Ben 'amin Adrianne, @255; W 141722 75 C'aflesan,

Alfarggy m. PHOYO-UTHKL wnsnmmom 0 c.

No. 7|a,s||. v Patentgd Dec. 23, I902.

B. ADRIANCE & A. GALLESON.

BOTTLE CAP MAKING MACHINE.

(Applieatibn filed May 26, 1962.) (No Model.) l6 sheets-slim 6.

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. Amos Caflesan,

fitnesses;

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mun" WASMNGTON u c No. 7I6,6H.

. Patented Dec. 23, I902. B. ADRIANCE &. A. CALLESUN.

BOTTLE CAP- MAKING MACHINE.

(Applicatiozi filed Kay 20, 1002) (No Model.)

l6 Sheets-$heef 7.

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entors v Benjamnfdrjance, @115 Y Amfls a 1 m, 621%, 40/44 Allorng].

Nu. 7l6,6l|. Patented Dec. 23, I902.

B. ADRIANCE 8:. A. CALLESON.

BOTTLE GAP MAKING MACHINE.

(Application fi1ed May 20, 1902.)

I6 Sheets-Sheet 8.

(No Model.)

in *"ml InventorsammAcZflance Ben 14/2205 Cai/eson ll\l..lllllllll.lllll llllll 'Witesses N0. 7l6,6ll. 1 Patented Dec. 23, I902. B. ADRIANCE 8:. A. CALLESON.

BOTTLE CAP MAKBNG MACHINE. (Application filed. May 20, 1902.)

(.No maul.) l6 sheets-sheet 9.

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1 messes: BwyaminAdrjance, (Q11; W v I Amos L'aJJeson,

nu: NoRms vzrzns L0, mum-m0, WAbHINOTON, u. c.

Patented Dec. 23, I902. B ADRIANCE & A. CALLESON.

BOTTLE CAP MAKING MACHINE.

(Application filed May 20 1902.)

l6 Sheets-Sheet l0.

(llu lodeL) m mn 8 10 F. mwwflm AHWA n um Was N H8 9% asses:

No. 7|B,6H. Patented Dec. 23., I902. B. ADRIANCE & A. CALLESON.

BOTTLE CAFMAKING MACI'HNE.

(Application filed May 20, 1902.) (No Model.) 16 Sheets-Sheet ll.

14 .m' H H ;II MIHIHHI l" WH f1] 5 O I -mm I .i II I I l I I If E I "*1 VIII! mu n: m: iil| l| F1 mm 'M .I .v I w llil i ll! n" will? b. if; Witnesses: t Com Q E fier ammAdnance, I M Amos CaIIesan, v WW4 arm No. 7|6,6ll. Patented Dec. 23, I902. B. ADBIANCE &. A. CALLESON.

BOTTLE CAP MAKING MACHINE.

(Application filepl May 20, 1902.) (No, Model.) I6 Shams-Sheet l2.

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lnesse 2 Inventors, (011:. gag am? Adriance.

mos JJeson, l gy/ z v Hungryn1: NQRRlS PETERS co, momuwo. wnsnmsrcu. o c.

No. 716,6. 7 Patented Dec. 23, I902. B. ADRIANCEA}. A. CALLESON. BOTTLE CAP MAKING MACHINE.

(Agplication filed May 20, 1902.)

(flu Modal.) l6 Sheets-Sheet I3.

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lnvenlors- Wflnesses: Bmy'aminAdrianae, 7 Amos Caflesm,

' M 6 64 6M}. W V l? ZAHUIQZJ -No. 716 6. Patented Dec. 23, [90.2.

B. ADRIANCE &'A. CALLESON.

BOTTLE CAP MAKING MACHINE.

. A lication filed May 20, 1902. v (No Model.) [6 Sheets-Sheet l4.

Inventors,

Witne sees: Ben'amin Adriance,

f y Aflurngp arney firiance,

l6 Sheets-Sheet 5 (a Patented Dec. 23

erj Amos C'aIIeso MWZ B ADRIANCE & A CALLESDN BOTTLE CAP MAKING MACHINE. (Apphcat on ill 6. May 20 1902 (No Model.)

- No. 716,6. Patented Dec. 23, 1902.

B. ADRIANCE- & A. CALLESON.

BOTTLE CAP MAKING MACHINE.

(Application filed May 20, 1902.)

(No Model.)

I6 Sheets-Sheet l6,

Inventors,

. T Y FFICEQ BENJAMIN ADRIANOE AND AMOS OALLESON, OF BROOKLYN, NEW YORK, ASSIGNORS, BY DIRECT AND MESNE ASSIGNMENTS, TO THE PIKENIX CORK COMPANY, OF NEWV YORK, N. Y., A CORPORATION OF NEW YORK.

.BOTTLE-CAP-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 716,611, dated December 23, 1902.

Application filed May 20, 1902. SerialNo. 108,175. (No model.)

To (LZZ whom it may concern.- Fig. 4 is a view from the right-hand side of Be it known that we, BENJAMIN ADRIANCE the machine, omitting the fly-wheel. Fig. 5 and AMOS CALLESON, citizens of the United is a plan view in which the parts above the States of America, and residents of the bortable are omitted. Fig. 6 is a plan view,

5 ough of Brooklyn, in the city of New York, drawn to a larger scale, showing a portion of county of Kings, and State of New York, the carrier-ring and the spacing-pawl of the have invented certain new and useful Imdial-feed, the edge-turning die, detector-pin provementsin Bottle-Oap-Wlaking Machines, for throwing the cork-inserting mechanism of which the following is a specification. into operation, and the ejector for the fin- E0 The machine herein illustrated has been ished caps. Fig. 7 is a vertical longitudinal designed for the special purpose of manufacsection through the strip-feed mechanism for turing the bottle-cap illustrated in United the bands on the line 00 m of Fig. 9, showing State Letters Patent No. 509,834, granted Nothe feeding-bars and the longitudinally-movvember 28, 1893, to Alfred L. lYeissenthanable slide by which the bars are actuated at [5 ner. This cap consists of a top plate of sheet the forward point of its stroke. Fig. 8 is a metal and'a holding-band, also or" sheet metal, similar section showing the slide at the rearthe ends of which are hooked together in such ward point of its stroke. Fig. 9 is a horizona manner that they can be readily detached tal section on the line 00 00 of Fig. 7, showby the fingers. One edge of the band is ing the stripfeed mechanism from under- 20 turned inwardly to engage the top plate. neath. Fig. 10 is avertical longitudinal sec- YVit-hin the cap and adjoining the top plate tion on the line 0: 00 of Fig. 11, showing is a compressible washer. This is preferably the feeding pawls shifted transversely as a cork disk. compared with Fig. 7 to effect the exchange The machineis fed by an attendant atthree of the engagement of the pawls and feed- 2 points, at the first point with strips of sheet ing-bars. Fig. 11 is a horizontal section on metal of a width equal to the length of the the line 00 09 of Fig. 10, showing the parts holding-band of the cap which the machine from underneath. Fig. 12 is a view of the is designed to manufacture, at the second strip-feed mechanism from the right side. point with other strips of sheet metal which Fig. 13 is a view of the strip-feed mechanism 0 are of a width suitable for cutting out the from the end. Fig. 14 is a vertical longitutop plates of the cap, and at. the third point dinal section through one of the partitionwith cork disks or washers. pieces which separates the feeding-bars. Fig.

The invention resides in the combinations 15 is a view of the strip-feed mechanism from of mechanical parts for automatically prothe left side. Fig. 16 is a plan View of the 5 ducing the above-described caps or portions strip-feed mechanism. Fig. 17 is a vertical thereof, as hereinafter specifically pointed longitudinal section at the forwardend of one out in the claims. of the feeding-bars. Fig. 18 is a plan view of In the accompanying sixteen sheets ofdrawthe transversely and longitudinally movable ings, which form a part of this specification, slides which carry the feeding-pawls. Fig.

40 Figure 1 is a front view of the machine, show- 19 is an elevation showing the punches and go ing the spindle of the coiling mechanism, the die-block for cutting the bands and the banddial-feed mechanism, the top plate cutting coiling mechanism, but omitting the stripand drawing mechanisms, the edge-turning feed mechanism. Fig. 20 is a perspective mechanism, and the cork-feed mechanism, view of the coiling-head. Fig. 21 is an ele- 5 but omitting the strip-feed mechanism for vation showing from the rear the punches 5 the bands, the band-cutting mechanism, and and die-blockforcutting the bands,the guides the strip-feed mechanism for the top plates. for turning the bands edgewise, the band- Fig. 2 is a back view of the machine, showpusher, and the coiling-spindle. Fig. 22 is a ing substantially the same parts. Fig. 3 is a vertical section on the line 00 00 of Fig. 21-.

50 view from the left-hand side of the machine. Fig. 23 is a plan view showing the forward roo end of the strip-feed mechanism, the dies for cutting the band, the band-pusher, and the coiling mechanism. Fig. 24 is a side view of the mechanism for operating the coilingspindle. Fig. 25 is a front view of this mechanism. Fig. 26 is a plan View of this mechanism. Fig. 27 is a View from the right-hand side showing the strip-feed mechanism for the top plate. Fig. 28 is a view of this mechanism from the front. Fig. 29 is a vertical section. through the framework of the mechanism on the line 00 00 of Fig. 27. Fig. 30 is a vertical section through the cork-inserting and cap-ejecting mechanism on the line x 00 of Fig. 6. Fig. 31 is the same section showingthe cork inserted and the cap ejected. Fig. 32 is a section through the top plate punching and drawing mechanism on the line 00 00 of Fig. 5. Fig. is the same section showing the top plate punched, but not drawn. Fig. 34 is the same section showing the top plate punched and drawn. Fig. 35 is a vertical section on the line 50 x of Figs. 5 and 23, showing the punch for cutting the hook and the cork-transferring mechanism. Fig. 36 is a vertical section on the line @0 00 of Fig. 6, showing the edge-turning mechanism and the detector-pin. Fig. 37 is a vertical section on the line 00 00 of Fig. 5, showing the top-plate-punching mechanism and the cork-feeding mechanism. Fig. 38 is a front view showing the adjustable connections between the yokes and the punch-head of the top plate punching and drawing mechanism, the parts atvthe left hand being in section. Fig. 39 is a vertical section on the line 00 x of Fig. 5, showing the guard-rail under the carrier-ring. Fig. 40 is a perspective view showing the cork-feeding mechanism. Fig. 41 is a perspective view of a band for the cap as it is formed by the band-cutting mechanism. Fig. 42 is a perspective view of a band showing how one end is bent and its tongue thrown out for engagement with the blade of the coiling-spindle when inserted in the coiling-head. Fig. 43 is a perspective View of a top plate. Fig. 44 is a perspective View of a cork disk. Fig. 45 is a perspective view of the assembled cap produced by the machine.

Strip-feedfor bands.The strips of sheet metal from which the bands for the caps are cut by the machine have a width equal to the length of the'band, which in the machine as illustrated is four inches. A convenient length for them is about twenty inches, and each strip cuts into thirty-six bands. strips are laid by theattendant, one at a time, on the table 1, which is diagonally placed with respect to the general framing of the machine. There are four parallel grooves running lengthwise in the top of the table. These grooves carry'two pairs of feeding-bars 2 2 and 3 3. The pairs alternate in feeding forward. At the forward end of each bar is a feeding-dog 4, which engages with the strip when it is feeding. Partition-pieces 5 separate the two feeding-bars on each side. These pieces.

These are pinned fast to the table and are provided with tongues which engage grooves in the sides of the feeding-bars and guide the feedingbars. The feeding bars are notched along their lower edges at intervals equal to the width required for the holding-bands for engagement by the forward-feeding pawls 6 6 and the rearward-feeding pawls 7 7 7 7. The pawls are pivoted directly to a transverselymovable slide 8, by which they can be brought into engagement with either pair of feedingbars as required. In Fig. 9 the two forwardfeeding pawls are shown in engagement with the pair of feedingbars 3 3 and two of the four rearward-feeding pawls are shown in engagement with the pair of feeding-bars 2 2. In Fig. 11 the engagement of the pawls and feeding-bars is exchanged, the forward-feeding pawls are shown in engagement with the other pair of feeding-bars 2 2, and the other two of the four rearward-feeding pawls are shown in engagement with the pair of feeding-bars 3 3. The engagement of the feeding-pawls with the feeding-bars is exchanged by the movement of the transversely-movable slide. This slide is carried by a longitudinally movable slide 9, by the reciprocation of which the feeding is effected. The slide has a movement sufficient to feed the bars the space of two notches at each reciprocation; but the forward-feeding pawls are wider than the amount of transverse movement of the transversely-movable slide and also wider than the bars with which they engage, so that they will at all times be under the partition- These partition-pieces are notched at 5 to allow the pawls to rise into engagement with the feeding-bars during a portion only of the reciprocation of the slide, thereby reducing the effective stroke, so that they will only feed the bars forward one notch at each reciprocation, while the other rearwardfeeding pawls, which engage with the bars throughout substantially their entire stroke, will feed the bars rearwardly two notches at each reciprocation and will have fed one pair of bars rearwardly to their extreme rear position when the other pair of bars has been fed forward half the distance. In consequence one pair of feeding-bars will be at its rearward position and resting during the last half of the time occupied in the feeding of each strip. During any portion of this time a new strip can be set in place by the attendant without stopping the machine, so that it will be fed antomatically by the machine as soon as the preceding strip has been fed beyond the end of the strip which is to follow. Each new strip as it is put in place rests at the forward end on the preceding strip which is feeding, and a friction-clamp 10 is provided to prevent the new strip from being carried along by the old strip. The strips feed under a bar 11, which keeps them from buckling. The feeding-dogs on the ends of the feeding-bars feed forward only as far as the edge of the die-block, leaving the end of the strip with stock for five bands. The forward end of the strip which is to follow butts against this and completes the feeding. The reciprocation of the longitudinally-movable slide and the feeding of the strip take place at each revolution of the main shaft 12 of the machine and are effected by power transmitted from the shaft through the crank-disk 13, pitman l4, arm 15, rockshaft 16, arm 17, connecting-link 18, reciprocating element 19, with a rack at one end, and oscillating gear 20, with crank-pin 21 and connecting-rod 22 between the crank-pin and the longitudinally-reciprocating slide. The feeding of the strip takes place at the final movement of the reciprocating element toward the front. The transversely-movable slide for exchanging the engagement of the pawls and feeding-bars is reciprocated alternately to one side and to the other at every thirty-sixth stroke of the feeding mechanism, this being the nu mber'of strokes requisite for the feeding of a strip. A pawl 23, attached to the longitudinally-movable slide, engages a ratchet-wheel 24 with seventy-two teeth, which is rotated one tooth at each operation of the feeding mechanism. This ratchetwheel is connected by a shaft 25 with a cam wheel 26. There are two diametrically opposite camming-points on this wheel, by which a pin 27, carried by an arm 28, is moved transversely every thirty-sixth tooth of the ratchet movement first to one side and then to the other. This pin projects through the arm, and its upper end engages and operates the transversely-movable slide.

Band cutting and coiling mechanism. The band b for the cap is formed from a straight strip of sheet metal about nine-sixteenths of an inch in width and four inches in length. Near one end an eye eis punched and near the other end a U-shaped slit is cut, thereby forming a tongue '6, which is bent out from the surface of the band and engages the eye at the other end when the band is coiled, and thereby locks the two ends together. The end with the eye is rounded and is somewhat narrower than the body of the band and projects beyond the eye about seven-sixteenths of an inch. This end is lapped outside when the band is coiled and is thus formed so that it can be conveniently taken hold of by the fingers when it is on a bottle and unhooked and removed in opening the bottle. As the strip from which the bands are cut is being fed on the table it passes under a punch-head 29, which is operated through a connecting-rod from a crank 31 on the main shaft. This makes the cuts requisite for forming the rounded and narrowed end, the tongue, and the eye before the band is cut from the strip. The cuts for the rounded ends are made by a punch 32, carried by the head, which notches one side of the strip, the sides of each notch forming one side of the rounded end of one strip and the other side of the rounded end of the adjoining strip. This punch passes through a stripper and die 33. The tongue is cut and raised by the die 34, carried by the head, in connection with the punch 35, which underlies the strip. (See Fig. 35.) These operate through a pair of stripper-plates 36 36. The punch is operated from underneath through a punch-rod 37. at its lower end by a lever 38, fulcrumed at the middle. The head which carries the die also carries a push-rod 39, which is screwed into the head. The amount of lift of the punch and the cut for the tongue is adjusted by adjusting the length of the push-rod and adjusting the stop-screw 40. The eye is cut by a punch 41, operated by the head, which passes through a stripper and die 42, formed in the same block with the die for cutting the rounded ends of the band. The head also carries a lettered punch 43 for impressing on the band the name of the article and the patent-mark and a shear-blade 44, which cooperates with a blade 45. which underlies the strip. The punches, die, andblade carried by the head are all made fast to a punchblock 46, bolted to the head. The dies and stripper-plates are fastened to a die-block 47. A dowel 48, attached to the punch-block, and a leading pin on the punch- 32 for the rounded ends enter dowel-holes 49 and 50 in the dieblock and facilitate the positioning of the blocks. Guide- fingers 51 and 52, fixed at the end of the table, and a leading-finger 53, carried by the head behind the shear-blade, defleet the forward edge of the strip downward as it is fed under the shear-blade,and the leading-finger is pushed back slightly against a spring 53. The leading-f1 ngeris held slightly nearer to the shearing edge than the width of the band and is pushed back when the strip is fed against it. As soon as the band is sheared the leading-finger springs forward and throws the band fiat against the end of the die block. The band then falls edgewise into the V-groove formed with the end of the die-block by the finger 51 and a finger 54, carried by the bandpusher 55. The band pusher is operated from the reciprocating element 19, which operates the strip-feeding mechanism. A camroll 56, attached to this reciprocating element, engages the arms of a segment 57 and oscillates the segment. The segment meshes with a rack 58 on the band-pusher. This movement takes place when the reciprocating element is about midway of its movement. The band'pusher pushes the band endwise into a coiling-head 59, through a slot 60 in the head. As it enters, the end, with the tongue, passes between the coiling-spindle 61 and a coiling-blade 62, attached to the side of the spindle and separated therefrom at the lower end. The end of the band, with the tongue, is pushed past a rib 63 in the coilinghead and across the recess 63. At this time the coiling-blade is opposite the recess 64 and can open away from the spindle sufficiently to allow the band and projecting tongue to pass between. The coiling-head is open on The punch-rod is supported the front side, and this side is partly closed by a plate 65, which is held in place by two pins 66 67 and a spring 68. The coiling-head is supported from the frame of the machine by a stud 69. A latch 70 holds it to the stud. By lifting this latch it can be quickly detached from the stud and pulled off from the spindle in case a defective band should become caught on the spindle and require removal by hand. The spindle is supported near its upper end in a bearing 71, attached to the framework of the machine, and it is guided lower down by a bearing 72, which is carried by the head for the band cutting punches and dies. The spindle is revolved intermittently in a clockwise direction two revolutions at a time at each stroke of the machine. The connections for revolving'the spindle are the arm 73, attached to the rockshaft 16, connecting-rod 74, rack 75, pinion 76, ratchet 77, and pawl 78 in a head 79, which is made fast to the upper end of the spindle. Abrake 80 serves to check the momentum of the spindle when the rack has completed its driving stroke, and thereby insures the stoppage of the spindle always at the same pointin its revolution. It also overcomes any possible sticking of the pawl and ratchet on the back stroke and prevents the spindle from turning or becoming displaced backwardly. The spindle at the place where the band is coiled is of less diameter than the finished band, so that the ends of the band when coiled will overlap sufficiently to allow the end of the tongue to enter the eye. The spindle is flared or tapered below the point where the band is coiled and is the full size of the finished band at its lower end. Three longitudinal grooves are cut in the spindle to receive the ejector-blades 81. These blades are attached to a collar 82,which is carried up and down with the head for the band cutting punches and dies. When the end of the band is inserted,the flared ends of the ejector-blades are below the band. These rise before the spindle commences to revolve,and the ejectorblade opposite the recess 63 bends the end of the band, as shown in Fig. 42, into the recess, thereby throwing out the tongue sufficiently to insure its engagement by the coiling-blade. When the band is coiled, the lower ends of the ejector-blades are above the point where the coiling takes place. The coiled band is pushed downwardly by these blades over the flared portion of the spindle, thereby expanding the band and securely hooking the ends, and off from the lower end of the spindle. A dial-feed for assembling the parts of the cap, consisting of a carrier-ring 83 with holes 84 of the exact outside size of the finished cap, is revolved intermittently under the spindle in an anti-clockwise direction by a pawl 85, carried by the reciprocating element 19,which engages the notches 86 in hardenedsteel blocks set in the edge of the carrierring. One of the holes is brought into register under the spindle and receives the coiled band as it is pushed off from the spindle. The bands are next carried by the carrierring to the other side of the machine, where the top plates are formed and inserted.

Strip-feedfor top plates.The strips from which the top plates are out are conveniently of the same length as the strips for the holding-bands, but narrower. They are about one and one-half inches in width, and each strip furnishes thirteen blanks for the top plates. These strips are therefore used up more than twice as fast as the strips for the bands and so rapidly that the attendant cannot conveniently feed them singly to the machine as the other stripsare fed. The feeding mechanism for these strips is therefore devised to receive a number at a time. The strips are piled on a support 87. Magnets 88 are provided for picking up the strips one at a time from this support, and laterally-feeding fingers 89 transfer the lifted strips at each thirteenth stroke of the machine to the right, and the right-hand edge at the forward endwill lie between a slide 90 and a longitudinally-feeding dog 91, pivoted to the slide, and be fed between the punch and die'for cutting and forming the top plates and inserting them in the holdingbands in the holes of the dial-plate. All of these feeding devices are operated from the rock-shaft 16 through the arm 92 and rod 93. A pawl 94 engages a thirteen-toothed ratchet 95 on the shaft 96 and spaces or moves it one tooth at each stroke of the machine. Two cams formed in one piece are carried by the shaft 96. One of the cams 97 engages a roller 98, attached to the vertical rod 99, with the cross-bar 100, and effects the lifting and lowering of the magnets. The laterally-movable fingers are attached to a shaft 101, which is rocked by the cam 102 through the camroll 103 on the end of the arm 104. The magnets and these fingers lift a strip from the pile on the support and shift it laterally between the slide and the longitudinally-feeding dog at each revolution of the cam and every thirteenth stroke of the machine. The longitudinally-feeding dog is actuated also from the rod 93, acting through the lever 105, rock-shaft 106, lever 107, and rod 108.v This operates on the forward stroke to first force the dog against the strip to be fed, thereby clamping it against the slide, and then carry the slide forward with the strip. 0n the return stroke the dog is first lifted and then carried rearwardly with the slide. A friction-clamp 109 bears against the slide and prevents its movement until after the dog has moved. Stop-screws 110 and 111 are a means for adjusting and limiting the movement of the slide. When the last plate has been cut from the strip, the scrap is kicked out by the lever 112 with a hooked end 112*, which catches in one of the holes in the scrap. This hooked end is pivoted to the lever 112. A spring 112 serves the double purpose of drawing the hook into engaging position and op-

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