US728214A

US728214A - Machine for finishing nuts.

Info

Publication number: US728214A
Application number: US11096302A
Authority: US
Inventors: George Dunham
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-06-10
Filing date: 1902-06-10
Publication date: 1903-05-19
Anticipated expiration: 1920-05-19

Description

No. 728,214. PATENT'BD MAY 19, 1903.

G. DUNHAM. I MACHINE FOR FINISHING NUTS.

APPLIGATIOR FILED JUNE 10, 1902.

NOMODEL. 7 sums-sum 1.

MIX/755555. I In van/bf No. 728,214. PATENTED MAY 19, 1903. G. DUNHAM.

MACHINE FOB FINISHING NUT$.

APPLICATION TILED JUNE 10, 1902. I

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N0 MODEL.

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MIX/7555.55. Z7v5/7f0/".

QXWM' iww J Z No. 728,214. PATENTED MAY 19, 1903.

v G. DUNHAM. I

MACHINE FOR FINISHING NUTS.

APPLICATION FILED JUNE 10, 1902.

N0 MODEL. I SHEETS-SELL!!! 3.

7/L Z/7E5555. .7771/5/7/0/1 Q? Km E No. 728,214. PATENT-ED MA 19, 190.3.

G. DUNHAML v MACHINE FOR FINISHING NUTS.

APPLIOATION FILED JUNE 10 1902.

N0 MODEL. '7 SHEETS-SHEET 4- WI I I Q M X/755555. 5"? J77vE/7/0r'. 1& @LW 9% 74M JW I No. 728,214. PATEN'IED MAY 19, 1903- LIOATION I G. DUNHAM; MA NE FOR FINISHING N 11.111) JUNE 10, 190

I N0 MODEL. 7 SHEETS-SHEET 6- I J77 Yen/0r";

' PATENTBD MAY 19 1903.:

G. DUNHAM. MACHINE FOR FINISHING NUTS..

APPLICATION TILED JUNE 10, 1902.

N0 MODEL l 7 SHEETS-SHEET 6.

No. 728.214. PATBNTED MAY/19,1903. DUNHAM. MACHINE FORQFINISHING-NUTS.

APPLICATION FILED JUNE 10, 1902.

NO MODEL. 7 SHEETS-SHEET 7.

"MIX/755555. v Even/0n NlTED ST T S Patented May 19, 1903'.

FFICE.

PAT T MACHINE FOR FINISHING NUTS.

SPECIFICATION forming part of Letters Patent No. 728,214, dated May 19, 1903.

Application filed June 10, 1902.

T0 aZZ whom, it may concern.-

Be it known that I, GEORGE DUNHAM, a citizen of the United States, residing at Unionville, in the countyof Hartford and State of Connecticut, have invented certain new and useful Improvements in Machines for Finishing Nuts, of which the following is a specification.

My invention relates to improvements in machines for finishing nuts; and the main object of my improvement is efliciency in the operation of the machine.

In the accompanying drawings, Figure lis a front elevation of my machine. Fig. 2 is a detached side elevation of one of the cams. Fig. 3 is a side elevation of the said machine, showing the right-hand side. Fig. 4 is a side elevation of the same, showing the left-hand side, but with the driving-wheel removed in order to better show the parts thatwould otherwise be hidden. Fig. 5 is an enlarged plan view of the revolving nut-carrier and some of the adjacent parts. Fig. 6 is a sectional view of the said carrier and connected parts, partly in elevation, the plane of the section being indicated by the line 000:, Fig. 5. Fig. 7 is a reverse plan view of a portion of the take=off for the round-hole punch. Fig. 8-is a plan view of the locking-disk of the carrier and its locking-lever. Fig. 9 is a plan View of'the feeding-slide and its mountings. Fig. 10 is an end view of the body part of the said slide. Fig. 11 is a sectional View, partly in elevation, of part of the yielding lever for the front holding-slide on the liney of Fig. 1. Fig.12 is a perspective view of the lower portion of the shipper-lever for the ratchet-and-pawl devices. Fig. 13 is a perspective view of the shipper operated by the said lever. Fig. 14 is a perspective view of the ratchet-wheel with which the said shipper coacts. Fig. 15 is a perspective broken-out view of the pawl-carrier and pawls for thesaid ratchet-wheel. Fig. 16 is a central vertical section, partly in elevation, of the parts shown-in Figs. 13, 14, and 15 assembled on their shaft. Fig. 17 is a sectional elevation of the knock-out andpilot for the swaging-die, together with a section of the said dieand connected parts, the plane of section being indicated by the line 2 .2, Fig. 19. Fig. 18 is a sectional elevation of the said knock-out and pilot on the line 8 s of Fig. 17

Serial No. 110,963. (No model.)

cated by the line it u, Fig. 22. Fig. 22 is a reverse plan view, partly insection, of one of the said nut-holders. I

My machine is designed for taking nuts that have previously been blanked out and punched and then to flatten, dress out the hole,swage or crown one face, and trim the edges.

The machine isin the form of alarge press, having a bed A, upright frame B, and main shaft C, provided with any ordinary cranks or eccentric upon which the pitmen D D are mounted for reciprocating the slideE-in the ordinary manner. Upon the bed A of' the press there is ahead or nut-carrier 22, upon which I mount four nut-holders, hereinafter described. 'In the die beds or blocks 23, 24,

25, and 26 I mount, respectively, the fiattening die or anvil 27, the round-hole die 28,47he swaging or crowning die 29, and the "trimming-die 30, while in the punch-holder or lower end of the slide E, I mount hammers or punches 31, 32, 33, and 34, respectively, for the said dies. The carrier or head 22 is mounted upon a vertical shaft 35, that ex tends down through the bed of the press and is provided with a bevelgear 36 at its lower end. A horizontal shaft 37, having a companion bevel-gear 38 at its inner end, extends outwardly to the right-hand side of the machine, where it is provided with a ratchetwheel 39and oscillating pawl-carrier 40, (see Figs. 1, 2, 3, 4, 14, 15, and 16,) the said pawlcarrier beingsubstantially a plate mounted by the side of the said ratchet-wheel and on the same shaft, as shown in Fig. 16. V The main 5 shaft C has a crank-pin 41 at its right-hand end, to which crank-pin the pitman 42 is attached by one end, while its other end is attached to the pawl-carrier 40. The ratchetwheel 39 is rigid on its shaft and the pawlroo carrier loose thereon. Upon the pawl-carrier there is one or more spring-actuated pawls 49 in position for engaging the teeth of the ratchet-wheel, whereby the oscillating pawl- Fig. 20 is a reverse 55 carrier moves the ratchet-wheel and its shaft forwardly when it moves in one direction and permits the said shaft to remain at rest when the said pawl-carrier makes its return stroke, thereby imparting a step-by-step movement to the carrier 22 through the connecting bevel-gears. The parts are so timed and adjusted as to thus move the carrier one-quarter of a revolution at each step.

In order to run the machine at a higher speed than could otherwise be done and to prevent the carrier from jumping forwardly when the machine is stopped suddenly, I employ a locking device and a shipper for said device to positively lock the ratchet-wheel and pawl-carrier during the fastest and major part of its forward stroke. The pawl-carrier is provided with four locking-holes 43, Fig. 15, concei'itrically arranged at equal distances apart. The ratchet-Wheel 39 is also provided with a hole 4-1, Fig. 14, to let the locking-pin 45 of the shipper 46 pass through and successively engage the several holes 43 of the pawl-carrier. This shipper is grooved for the engagement of the fork at the lower end of the shipper-lever 47, which is fulcrumed on a bracket 140, Fig. 3, or other suitable fixed support on the press-frame, with the upper end of the said lever extending upwardly to a catn 48 on the tnain shaft C. This cam consists of a side projection at the end of the main shaft and extends somewhat less than half of a complete circle, the forward end of the cam being gradually inclined and its rear end more abruptly inclined, as shown by the shaded portions of the said cam in Fig. This shipperltislides on thehubof theratchetwheel 39. The shaftturns in the direction indicated by the darts on the driving-wheel Fin Figs. 1 and 3 and on the end of the cam in Fig. 4. 7 As shown in Fig. 3, the crank-pin 41 is going up, so as to lift the pitman 42 and move the pawlcarrier pawls 49 downwardly to drive the ratchct-whee1 and the carrier 22 forwardly. At this time the shipper-lever 47 is not acted upon by its cam, and therefore the spring 50, acting on the shipper-lever, has moved the shipper up against the body of the ratchet-wheel, as shown in Fig. 16, to positively lock the ratchet-wheel 39 and pawlcarrier 40 together, so that the momentum of the parts on the carrier-shaft will not force the said carrier beyond the position where the pawl-carrier moves it. About the time that the crank-pin t1 reaches its highest point in passing the dead-center the cam 48 engages the shipper-lever-t7 and moves the shipper 46 away from the ratchet wheel 39, so as to wholly withdraw the locking-pin from the locking-hole in the pawl-carrier, and therefore when the pawl-carrier makes its return stroke it can do so independently of the ratchetwheel. The cam 48 continues to hold the shipper and locking'pin out of engagement until the crank-pin is near its lowest point, when its acting face runs out from under the said lever and the spring 50 returns the shipping-lever and the locking pin 45 in time to have the said pin engage the next succeeding one of the holes 43 to positively lock the ratchetrwheel to the pawl-carrier when the said pawlcarrier makes its next forward stroke.

Upon the carrier-shaft 35, below the bed A of the machine, there is a locking-disk 51, provided with four locking-plates 52, having beveled notches in their outer ends. One of the said plates is omitted from Fig. 8. They are secured by bolts 53, that pass through elongated holes in the disk, and by means of set-screws 54, that extend through lugs on the upper side of the said disk 51, which screws bear on opposite edges of the lockingplates. By being thus secured the lockingplates can be adjusted laterally and firmly held in position. chine there is a swinging lever 56, on which is mounted the adjustable locking-tongue 57, with tapering edges to fit the tapering or beveled notches in the lockingplates 52. This lever is fulcrumed by its eye 58 to the under side of the bed of the machine and is pulled inwardly by a spring 141, one end. of which spring is connected to any fixed support underneath the bed A. The lever 56 is operated for engagementand disengagement with the locking-disk by means of the rockshaft 59 and its connections at the front of the machine. The said shaft is supported in brackets 60 and is rocked by means of the rock-shaft catn on the main shaft 0, the

forked lever 62, link 63, and arm (54. on the end of the said rock-shaft. The rock-shaft cam is made up of parts, of which 61 is the central or body part, on the right-hand side of which there is a cam part 61 for acting on the rear member 62 of the forked lever 62, and on the left-hand side of which is the cam part (51 for acting on the front member 62 of the said forked lever 02, the ends of the said members having their bearing-points offset, so that the cam part for one member of the said forked lever does not engage the other member. A secondmovement cam part 61 is secured to the cam part 61, so as to project beyond the edge thereof for acting upon the front member of the forked lever, and as the said member also bears on the central or body part 61 of the rock-shaft cam the edge of said body is recessed, as at 61, to permit the rear member (32 to move inwardly while the front member 62 is being forced outwardly by the said second-movement cam part 61. The forked lever is pivoted to the frame on the bolt 65. Upon the rock-shaft 59 there are two fixed arms 66, to one of which is secured the yielding arm (57, pivoted or hinged to the said fixed arm. To the other fixed arm a longer yielding arm 68 is secured, the said yielding arms in both cases being yieldingly held in their movement inwardly by means of the bolt 69 and spring 70, while in their outward movement the yielding arms engage the fixed arms and At the front of the ma- IIO then move positively together, as best shown by Fig. 11. The swinging lever 56 for the locking-disk is connected with the yielding arm 67 by meams of the link 71.

Upon the top of the carrier 22 at its central portion there is a square block 76, and on the four sides of the same are the four nutholders. Each nut-holder comprises three fingers mounted in the holder-blocks 72. The righthand finger 73 (looking inwardly on the front holder) is fixed against moving laterally away from its companion finger, while the left-hand finger 74 yields laterally outward away from the fixed finger 73, while the middle or stop finger 75, having a V-shaped end, has no lateral nor endwise movement after it is prop-- erly adjusted. All three of the fingers are hung on horizontal pivots, so that their outer ends may swing downwardly under the action of the several tools on the press-slide E. The holder-blocks are mounted on the top of the carrier 22, secured thereon by bolts 79, and are adjusted laterally by means of the setscrews 77 in the lugs 78, that project upwardly from the carrier. The under side of the holder-blocks are recessed or grooved for receiving the three fingers or their mountings, as best shown in Figs. 6, 21, and 22. The middle finger is mounted in a recessed sliding block 80, that fits and fills the middle groove in the holder-block 72 and is pivoted therein to swing up and down at its outer end by means of the pin 81, Figs. 6 and 22. This block 80 when in position on the carrier is prevent-ed from moving inwardly by means of the set-screw 82 in the center block 76, the head of which screw abuts against the solid end of the said block, whereby the finger is adjusted longitudinally and held against moving inwardly out of its adjusted position. It is prevented from moving outwardly by means of the set-screw 142 in the holder-block 72, the end of which bears on the sliding block 80 of the said middle finger. The laterally-fixed finger is made in two parts, the finger proper,73, and the finger-body 83,which lies in the right-hand recess of the holderblock 72 and is pivoted on the horizontal pin 84, Fig. 22, to the said block. The finger proper, 73, and its body 83 are secured together in an adjustable manner laterally by means of the rib 85 on the top of said body near its inner edge, which rib fits a transverse recess in the under side of the said body 83 near its forward end and the bolt 86, which passes through an elongated hole in the finger proper, 73, from the top into the said body to fasten the two rigidly together as one piece. A set-screw 87 extends through a lug on the finger proper, 73, with its end bearing against the edge of the body 83 for adjusting the finger proper laterally on its body when the holding screw or bolt 86 is loosened. This adjustment enables the finger 73 to be set nearer to or farther from the finger 74. The yielding finger 74 is also mounted on a finger-body 88 by means of the screw 89, on which it may swing horizontally, while the fingerbody is hinged in the holder-block 72 upon the horizontal pin 90, so that the outer end of the complete finger may swing vertically on the said pin. This finger 74 is pulled toward its companion finger 73 by means of the spring 91, which is connected by one end to the finger-block and by its other end to the said finger 74, as shown in Fig. 5. All three of the fingers are forced upwardly by means of a spring like the spring '92, Figs. 6 and 21, the said spring being seated within the carrier 22 and bearing against the under side of the said fingers. These nut-holders or carrier-fingers pass over the several die-

blocks

23, 24, 25, and 26, which form a table for the work, the fingers being slightly above the said table. The spaces between the adjoining die-blocks may be filled in by suitable filling to make the table continuous in the path of the nuts from the die-block 23 to the die-block 26. Outside of this circular worktable, beginning at the flattening-die 27 and extending to the trimming-die 30, there is a continuous circular guard 93 of a vertical thickness fully equal to the thickest nut for which it is designed to operate in connection with. This guard is covered at the front by the round-hole punch take-off 94, the said take-0E being placed on the top of the said guard, the said take-01f extending inwardly over the table and over the ends of the

fingers

73 and 74 of the nut-holders. From the take-off 94 to the trimming-die 30 there is a cap 95, extending inwardly in the same way to prevent the nut from working upwardly out of the nut-holders. Upon the top of the carrier 22 between each of the nut-holders I secure a scrap-clearer 96, that extends outwardly to near the guard 93 and which sets closely to the surface of the work-table and top of the dies to clear them of all scrap or other obstacles by poking off from the dies or table whatever lies in the path of the said clearer-s as they move with the rotary carrier. At the front of the right-hand member of the upright portions B of the frame there is a nut-chute 97, (shown only in Fig. 5,) which may be supplied with nuts 98 in any desired manner, the said nuts being'fed in with two of their parallel edges extending transversely to the length of the chute, so as to present the forward one of said parallel edges to the lat eral guide 99, near the flattening-die 27, Fig.

5. By the side of this guide there'is a feeding-finger 100, which is reciprocated to first move the said finger inwardly to feed one of the nuts in

between'the fingers

73 and 74 of the nut-holder until it is stopped by the middle finger 75. After the press-slide and its tools descend to flatten the nut the said finger moves backwardly to the position shown in Fig. 5 and another nut falls down in front of it ready to be fed in between the next succeeding nut-holder as the carrier is moved one-quarter of a revolution by the means before described, and the nut which'has been flattened is carried by the nut-holder and carrier to the round-hole punch 32 and die 28.

The feeding-finger 100 is mounted upon a slide 101 (best shown in Figs. 9 and 10) and is yieldingly forced forward by means of the cam 102 on themain shaft 0, the lever 103, and a yielding connection between the said lever and slide. A rod 104 is mounted on one side of the middle portion of the slide 101, upon which rod there is a sliding eyebolt 105, to which the lower end of the lever 103 is socured, the said lever being fulcrumed on the press-frame at 106. This eyebolt 105 when free is forced back on the said rod 104 against the bracket 107 by means of the spring 108 on the said rod, which spring is confined and adjusted by means of the nuts on the end of the rod 104. It will thus be seen that the lever 103 pushes the eyebolt against the spring 107, which spring should be of sufficient strength to ordinarily carry the feeding-finger forward to feed the nut without deflecting the spring until the forward movement of the feed-slide is obstructed by the nut coming to a bearing against the end of the middle finger of the nut-holder. I prefer to give the feed-lever 103 a little more motion than is necessary to feed the nut up against the said middle finger, and in such case the spring yields and permits the feed-finger to remain stationary while the lever completes the rest of its stroke and holds the nut firmly during the action of the flattening-punch. This insures of a motion always sufficient to carry the nut into its place and also causes the nut to be securely held between the feeding-finger and middle finger during the action of the flattening-hammer. In front of the roundhole die 28 there is a holding-finger 109, mounted on the reciprocating slide 110, the said slide being connected to the upper end of the longer yielding arm 68 on the rockshaft, before described, by means of the link 111. (See Fig. 5.) This holding-finger operates in a similar manner to hold the nut back against the middle finger of the nutholder when the round hole in the nut is being dressed out by the round-hole punch and die. This holding-finger is made thinner than the nut, and the upper front of the guard 93 is cut away to let the finger pass, as shown in Fig. 6. The take-0E 94 is a fiat plate-like device with a hole through it for the punch, and it has the usual mode of operation; but in order to prevent'a broken punch from clogging the machine I form a groove 112, Fig. 7, in the under side of the take-off, which groove extends from the hole through the take-off to the edge thereof on that side which lies in the path of the nut as it moves from the round-hole die, the said groove being on the arc of the circle described by the center of the nut. By this construction if the smaller part of the punch breaks off and sticks in a nut it will pass on with the nut and not clog the machine. The holding-cap does not project so far as the middle portion of the take-off; but it will still hold the nut down and permit a broken punch to pass along at its edge. If desired to have this cap cover the whole nut, the grooved construction hereinbefore described for the take-off may be applied to the said cap.

In the center of the swaging or crowning die 29 is a pilot 113 and knock-out 114, the

former for centering the nut for swaging and the latter for knocking the nut out of the die after swaging. The knock-out 114 is in the form of a sleeve which is screwed into the upper end of the knock-out slide or body 115. This slide has a cylindrical body that fits into the knock-out holder 116, which holder is let into the bed A of the machine from the under side, as shown in Fig. 17. At its lower end there is a spiral spring 117 around its shank 118, which is confined by the cap 119 and nut 120, with aconstant tendency to hold the knock-out with its upper end in the plane of the top face of the swaging-die 29. By means of the nuts 120 such an adjustment of the knock-out is readily made. The shank 118 is long enough to permit the pilot-pin and knock-out to be depressed to an unusual degree in case a part of a broken-off round-hole punch should be forced downwardly on the upper end of the said pilot-pin when the swaging-punch descends. Within the knock-out and its slide orrbody the pilot 113 is mounted. The pilot is of two diameters, the smaller part fitting the bore of the knock-out 114, while its larger part fits the bore of the knock-out slide 115. A spring 125 under its end forces it upwardly with a tendency to press its shoulder against the lower end of the knock-out, as shown in Fig. 18. The knock-out slide or body is slotted transversely, as at 121, Figs. 17 and 19, and dovetailed or otherwise attached to the larger part of the pilotis acrosspiece 122, that extends through the said slot 121, the ends ofthe said cross-piece being preferably coincident with the periphery of the cylindrical body of the knock-out slide. The said cylindrical sides of the slide-body are slabbed off on two sides at right angles to this cross-piece and for the length vertically of the slot 121 in order to make room for the forked slide 123 to operate on the cross-piece 122 and also to form shoulders 124 for the said forked slide to act upon. The forked slide 123 is reciprocated from front to rear in a groove in the bed A of the machine, so as to pass just under the die-block 25. Its upper face is in the plane of the shoulders 124 when the knockout is elevated, and its lower face is below the projecting ends of the upper edge of the crosspiece 122. The knock-out and pilot are held by the springs 117 and 125 in the position shown in Figs. 17 and 18 when free; but when the slide is forced inwardly the under face of its beveled end engages the cross-piece 122 and forces the pilot down suificiently to fully withdraw its upper end from the face of the die, so that a nut may be carried into position over the said pilot ready for the pilot with the lower end of the lever 132.

to be forced upwardly under the influence of its spring and enter the nut to center it as the forked slide withdraws for the action of the swaging-die and its punch. If in any case the knock-out shall stick in the die after a nut is swaged, the next movement of the forked slide to force down the pilot will also act to force the knock-out up into its proper position to force out the nut. The forked slide should be timed to withdraw and let the pilot up just before the swaging-punch strikes the nut and to act for forcing the pilot down as soon as the swaging-punch recedes and before the next forward movement of the carrier, whereby the pilot is always withdrawn and the nut always loosened or knocked out before the carrier moves totransfer the nut from the swaging-die. The forked slide 123 is reciprocated by means of the lever 126, fulcrumed at 127, two projections 128 and adjustingscrews 129 on the link 63, that connects the lever 62 with the arm 64 on the rock-shaft 59. This link 71 moves nearly in the longitudinal direction from front to rear, so that the screws 129 constitute adjustable driving-faces mounted on the said link, engage the end of the lever 126 first on one side and then on the other to reciprocate it and operate the said forked slide.

The swaging-die is provided with a holdingfinger 130; but inasmuch as the swagingpunch 33 is necessarily larger than the nut this finger is made to first move up and press the nut firmly back against the middle finger of the nut-holder in case it has moved at all in being transferred from the preceding die and then retreat a little, so as to be out of the way when the swaging-punch is about to strike the nut, and as soon as the punch begins to ascend the finger 130 comes forward again to clamp the nut and assist in preventing it from rising with the punch. The finger 130 is mounted in the slide 131, that is connected The said lever is pivoted on the press-frame by the bolt 133, with its upper end bearing against the cam 134 on the main shaft. The said 1ever has a spring 135 secured to it by one end, while the other end'of the said spring is secured to the press-frame with a tendency to pull the lower end of the said lever and the said finger inwardly to its work whenever the said lever and finger are not forced back by the cam 134. This cam (shown separately in Fig. 2) has two cut-away

portions

136 and 137, closely following each other to permit the spring to force the finger 130 inwardly just before and after the action of the swagingpunch, the higher parts of the said cam forcing and holding the said finger back out of the way at all other times.

Back of the trimming-die 30 there is pivoted to the die-block 26 a swinging finger 138, with its end projecting slightly into the path of the nuts, and it is held in this position by means of the spring 139, so that as the car-.

rier brings a nut in one of the nut-holders over this trimming-die, the nose of the said finger engages one corner of the said nut, yields back a little, and then presses the nut back against the middle finger of the nutholder to bring the nut into the proper position over the trimming-die when the trimming-punch descends.

It will of course be understood that after the machine has made three nuts and continues operating properly, all four operations will be going on at the same time on the nuts in the four different holders. The rock-shaft at the front of the machine is moved in the direction to carry the yielding

arms

67 and 68 forwardly, and seat the locking-tongue 57 firmly in the notched plates of the lockingdisk, and to press the front finger 109 firmly against the nut by means of the cam part 61 acting on the front member 62 of the forked lever 62 before the forked slide 123, that holds down the pilot, is fully withdrawn, and the second movement of the said forked lever in the same direction is given by the secondmovement cam part 61 to wholly withdraw the said forked slide and let the pilot spring upwardly. During this second movement the fixed arms on the rock-shaft continue to move toward the press, the

arms

67 and 68 yielding to compress the spring sufficiently to permit this second movement after the front-finger slide and locking-lever of the locking-disk come to a bearing and stop until the

arms

67 and 68 are moved backwardly by the cam part 61. The spring 141 for pulling the lever 56 inwardly is to assist the yielding arm 67 in forcing the said lever into engagement with the locking-diskfil.

It is apparent that some changes from the specific construction herein disclosed may be made, and therefore I do not wish to be understood as limiting myself to the precise form of construction shown and described, but desire the liberty to make such changes in working my invention as may fairly come within the spirit and scope of the same.

I claim as my invention- 1. The combination of the nut-carrier with the nut-holder, a die and punch in the path of the said nut-holder, a feeding-finger for pushing nuts into the said nut-holder when over the said die, and a spring-pressed yieldingoperating mechanism for moving the said finger, the said combination acting to hold the nut in the nut-holder over the die under spring-pressure during the action of the said die and punch, substantially as described.

2. The combination of the nut-carrier with the body-block of the nut-holder, the laterally-fixed finger, the middle finger, the later ally-movable finger, means for forcing the laterally-moving finger towardits companion finger, the said three fingers being all pivoted V on horizontal axes within the said block so as to permit their outer ends to move downwardly with the punch, and springs acting to raise the outer ends of the said fingers to their normal position, substantially as described.

3. The combination of the carrier with the four nut-holders mounted thereon, a work-table, the four dies and their punches in the path of the said nut-holders, the feeding-finger, and its operating mechanism for forcing the nuts into the nut-holders, and a circular guard just outside the fingers of the nutholders extending around the outer edge of the work-table and carrier from the first to the fourthof the said dies, substantially as described,

4. The combination of the carrier with the four nut-holders mounted thereon, the four dies and their punches in the path of the said nut-holders, the feeding-tingerand operating mechanism for forcing the nuts into the nutholders, a-circular guard just outside the fingers of the nut-holders around the outer edge of the work-table containing the said dies, and extending from the first to the fourth die, and a cap projecting from said guard over the ends of the fingers of the nut-holders from the second of the said dies to the fourth, substantially as described.

5. The combination of the nut carrier, mechanism for'moving the said carrier forwardly step by step in a rotary direction, the several duplicate nut-holders mounted on the said carrier, the several dies and their punches in the path of the said nut-holders, and the 'scrap-clearers mounted on the said carrier,

and moving forwardly step by step in a circular path, substantially as described.

6. The combination of the nut-carrier, with the several nut-holders mounted thereon, the ratchet-wheel for driving the said carrier, the oscillating pawl-carrier and pawl for driving the said ratchet-wheel, and locking mechanism acting to lock the ratchet-wheel and pawlcarrier together during the movement of the pawl-carrier and to unlock the same for the return movement of the said pawl-carrier, substantially as described.

7. The combination of a nut-carrier with the round-hole die and punch, and the takeoff for the said punch having in its under face a groove extending in the path of a nut in the carrier from the hole through the said takeoff to that edge toward which the nut in the carrier moves upon leaving the said die, substantially as described.

8. The combination of the nut-carrier with the round-hole die and punch, the holdingfinger in front of the said die, a spring-pressed yielding operating mechanism for moving the said holding-finger, and means for reciprocating the said yielding operating mechanism, the said combination acting to hold the nut in the nut-carrier under spring-pressure over the said die during the action of the said die and punch, with the spring of the said spring-pressed yielding operating mechanism under its greatest tension, substantially as described.

9. The combination of the rock-shaft 59 with the fixed arm on the said shaft, the yielding arm pivotally mounted on the said fixed arm, a spring normally acting to hold the yielding and fixed arms together but permitting the yielding arm to move in one direction independently of the said fixed arm, and the slide operated by the said yielding arm, substantially as described.

10. The combination of the nut-carrier with the swaging die and punch, the holding-finger for pressing the nut when within the carrier over the said swaging-die, and mechanism for operating the said finger forpressing the nut in the carrier to prevent it from lifting with the punch during the upward movement thereof,and then withdrawing the said finger, substantially as described.

11. The combination of the nut-carrier with the swaging-die, the hollow knock-out arranged to reciprocate within the said die, a

pilot arranged within the said hollow knock- V out to project above the same, and mechanism for operating the said pilot to hold it down when the carrier is moving the nut into position over the swaging-die and to let it up as the nut is about to be swaged, substantially as described.

12. The combination of the swaging-die, with the hollow knock-out arranged to reciprocate within the said die, a spring for holding the knock-out in its elevated position, a pilot arranged to reciprocate within the said knock-out, a spring for holding the said pilot with its end projecting from the end of the said knock-out, and mechanism for forcing the pilot down against the spring and holding the knock-out in its elevated position, substantially as described.

13. The combination of a knock-out holder with the knock-out body and hollow knockout, the said body being slotted transversely, bored longitudinally, and having the holding-shoulders 124:, the pilot and pilot-spring arranged within the bore of the said knockout body, the pilot cross-piece 122 secured to the pilot-body and extending outwardly through the transversely-slotted portion of the knock-out body, the forked slide for acting on the said cross-piece of the pilot and shoulders of the knock-out body, and mechanism for operating the said forked slide, substantially as described.

14. The combination of the nut-carrier with the several nut holders mounted thereon, mechanism for moving the said carrier step by step, the several dies in the path of the nut-holders on the said carrier, the several punches for acting in connection with the said dies, the feeding-finger acting in connection with the first of the said dies, the holdingfingers acting in connection with the second and third of the said dies and mechanism for operating the said three fingers, substantially as described.

15. The combination of the nut-carrier with the swaging die and punch, the holding-finger 130, a spring for forcing the said finger 1ongitudinally against the nut in the nut-carrier, and operating mechanism acting in connection with the said spring for advancing the said finger against the nut then withdrawing it when the punch is about to swage the nut, and advancing the said finger for the second time as the punch recedes, substantially as described.

16. The combination of the nut-carrier,with the locking-disk mounted on the nut-carrier shaft, the front slide and holding-finger for the round-hole punch, the round-hole die and punch, the swaging die and punch, the hollow knock-out and pilot for the said swagingdie, the'forked slide for controlling the said pilot, the rock-shaft 59, yielding connections of the said rock-shaft with the said lockingdisk and front holding-fingers, operating mechanism for the said rock-shaft, and connections with the said operating mechanism and the said forked slide, substantially as de- GEORGE DUNHAM.

Witnesses:

E. G. DUNHAM, PETER TLLAVSKY.