US241368A - hyslop - Google Patents

Description

(ModeL) whenssheet 1.

J. HYSLOP, Jr.-

Maohinefor Shaping the Heads of Tacks, 8L0. No. 241,368. Patented May 10,1881.

WITNESSES: INVENTQRB a v B N. PETERS. PhotoLilhognpher, Washington. D. C.

(M 0de1.) 4 Sheets-Sheet 2,

J. HYS'L OP, Jr. Machine for Shaping the Heads of Tacks, 8L0. No. 241,368. Patented May 10,1881.

WITNESSES ILIVBNTCIR wa v/f/ v w ORNEYS.

N. PETERS, Phulcrliihngraphen Washingion. D. C.

(Model) 4SheetS-Sheet. 3.

J-. HY-SLOP, Jr. Machine for Shaping the Heads of Tacks, &c. No. 241,368. Patent ed May 10, 1881.

INVENTOR TORNEYS.

' WITNESSES:

N. PETERS. Phutu-Lithographar. Wank ,gton. D. C

(ModeL) 4 Shets-v-Sneet. 4.

J. HYSLOP,-Jr. Machine for Shaping the Heads of Tacks, -&c.

No. 241,368. Patented May 19,1881".

WITNESSES ,N. PEYERSv Photo-Lilhographer, Washington. D, C.

UNITED STATES PATENT OF ICE;

JOHNHYSLOP, JR. or ABINGTON, MASSACHUSETTS, ASSIGNOR To THE ABINGTON TACK AND MAoHmEASSooIATIoN, or SAME PLACE.

MACHINE FOR SHAPING THE HEADS OF TACKS, &.c.

SPECIFICATION forming part of Letters. Patent No. 241,368, dated May 10, 1881.

Application filed November 5, 1580. (Model) To all whom it may concern Be it known that I, JOHN HYSLOP, Jr., of Abington,in the county ofPlymouth and State of Massachusetts, have invented a new and useful Improvement in Machines for Shaping the Heads of Tacks,Nails, and Rivets, of which the following is a specification.

Figure 1, Sheet 1,'is a sectional front elevation of the improvement, showing a tack just brought beneath the upper die. Fig. 2, Sheet 1, is aview, showin g the track withdrawn, leaving the tack beneath the dies. Fig. 3, Sheet 1, is a view, showing a tack being operated upon by the dies and another tack ready to be introduced. Fig. 4, Sheet 2, is a sectional plan view. Fig. 5, Sheet 2, is a plan view of the clamps attached to the track. Fig. 6, Sheet 3, is a sid elevation, partly in section. Fig. 7, Sheet 3, is a front elevation of the drum, partly in section, and showing the track in cross-section. Fig.8, Sheet4,isa sectional side elevation, taken through the line as m, Fig. 4.

, Similar letters of reference indicate correspondin g parts.

The object of this invention is to furnish machines for cutting, shaping, or finishing the heads of tacks, nails, and rivets, which shall be so constructed as to make all the heads uniform in shape and size, and which will allow any desired form to be given to the heads.

The invention consists in constructing a machinefor shaping the heads of tacks, nails, and

rivets; of a mech anism for delivering the tacks automatically to the feed-track; of amechanism for keeping them in place while passing along the feed-track, and delivering them, one at a time, to the dies; a mechanism for centering them in the dies; and a mechanism for giving a longitudinal and an up-and-down movement to the forward end of the feed-track, all constructed and arranged as will be hereinafter fully described, whereby the heads of the tacks will be brought to a uniform shape and size.

In the accompanying drawings, A represents the bed-plate or table of the machine, to which is securely attached, or upon which is formed, a standard or upright frame, B.

In bearingsin the upper part of the upright frame B revolves a horizontal shaft, 0, to which motion can be given from any convenient power, and which is provided with a flywheel, D, to give steadiness of motion and mo mentum to the operating parts of the machine.

To the forward end of the shaft Care attached, or upon it'a-re formed, two cam-wheels, E F, and upon the forward end of said shaft is also attached a crank-"pin, G. The crankpin G passes through a horizontal slot in the plunger H, which works in bearings attached to the forward end of the frame B, so that the said plunger will be raised and lowered by the revolution of the shaft (3. In the plunger H,

at the bottom of its slot, is formed a recess, 2,

to cause the plunger to pause an instant in its descent for the purpose hereinafter set forth.

To the top of the upright frame B is attached the short-arm of a bent or Ushaped spring, I, the long arm of which extends forward and is slotted to receive the headed pin, screw, or other catch, J, attached to the upper end of the plunger H, to raise the said plunger promptly when the crank-pin G begins to rise, and to hold the plunger always pressed up against the crank-pin, so that the plunger will only move downward under a positive pressure.

To the lower end of the plunger H is attached a die, K, of the exact shape and size required to be given to the tack-head, and which fits into a correspondingly-shaped die, L,attached to the bed-plate A.

To the middle part of the shaft 0 is attached a pulley, M, around which passes a band, N. The band N passes around two guide-pulleys, O, pivoted to supports P, attached to the bedplate A or the frame of the machine. The band N also passes around a large pulley, Q, formed upon or attached to the outer end of the drum or hollow cylinder, It, which is pivoted at the center of its outer end to a bracket, S, attached to the bed-plate A or to the frame of the machine. 7

To the inner surface of the side wall of the drum It are attached buckets T, whiehare made a little shorter than the said drum R, and have their inner ends open, as shown in Figs. 1 and 4. The middle part of the inner end of the drum B is cut away to receive the upper end of the track orslide U, which is,

beveled, so that the tacks whose points have i not entered the slot of the said track may slide off to the apron V, and slide down the said apron into the drum It, to be again raised by the buckets T and again deposited upon the widened upper end of the track U. The opening in the inner end of the drum R is closed bya plate, W, attached to the spindle X, upon which the said drum R revolves. The lower part of the plate W is cut away to allow the slide or track U and the apron V to enter the said drum and for the tacks to slide past it upon the said track and apron. The track U is hinged at its middle part to the upper end of a bar, Y, the lower end of which is hinged to the bed-plate A, so that the forward end of the said track can have a longitudinal and an up-and-down movement.

To the upper side of the track U is attached a guard-plate, Z, extending downward from the apron V, and which is raised far enough above the track U to allow the heads of the tacks to pass between it and the said tracks when the bodies of the said tacks are in the slot of the track, and to prevent the tacks from passing down when their bodies are not in the said slot..

To the lower ends of the bars of the track U are attached the parts ot'acla1np,a, which parts are held together by a spring, I), attached to them. The clamps a are made with two pairs of jaws, c d, and with an opening, 0, between them of sufficient size to receive the bodies of the tacks, but not large enough to allow the tack-heads to pass through. Thelower end of the guard-plate Z extends down to the opening 6 of the clamps a, and is recessed or notched directly above the said opening, to allow the die K to pass the plate Z and come in contact with the head of the tack suspended in the said openinge. The tacks are drawn from the space above the jaws 0, through the said jaws c, to the openings 0 by the upwardly-projectin g edge of a plate, f, attached to the bed-plate A at a little distance from the die L, and called by me the picker. The track U is drawn forward by a spring, 9, attached to it and to the bedplate A, and its forward end is drawn upward loya spring, h, attached to it and to the upright frame B. The'track Uis pushed back by a leyer, i, the lower end of which rests against a small roller, j, pivoted to the side of the said track U. The upper end of the lever 'i is pivoted to the upper part of the upright frame B.

To the side of the upper part of the lever t is pivoted a small roller, is, the face of which 7 rests against the face of the cam-wheel F of the shaft 0, so that the trackU will be pushed back at the proper time by the revolution of the said shaft 0. The forward movement of the track U is regulated and limited by a set-screw, Z, inserted in a screw-hole in the leverz' or in a lug formed upon the said lever. The forward end of the set-screw Zstrikes against the side of the upright frame B. The upward movement of theforward end of the track U is limited by a stop-plate, m, which is secured to the lever t by a set-screw, and the lower end of which or a projecting arm formed upon the said lower end strikes against the upper side of the roller j. The stop-plate m is slotted to receive the clamping-screw, so that it can be adjusted higher or lower, as required. The forward end of the track U is pushed down at the proper time by a bent lever, n, the forward end of which or a laterally-projecting arm formed upon the said forward end rests upon a small roller, 0, pivoted to the side of the said track U. The lever 02 is pivoted to the side of the lower part of the upright frame B. The rear part of the bent lever n inclines upward, and to the side of its upper end is pivoted a small roller, 19, the face of which rolls along the face of a cam, g, attached to the rear part of the shaft (J, so that the forward end of the track U will be pushed down at the proper time by the revolution of the shaft 0. The forward end of the bent lever n is held up, except when forced down by thecam g, by a spring, 1", attached to the said lever and to the upright frame B.

To the bed-plate A, at a little distance from the die L, are pivoted the outer ends of the parts of the clamp s, the inner ends of which meet directl y over the die L, and have a hole, '25, formed through them to allow the point of the tack to enter the cavity of the said dic L. The hole through the jaws of the clamp s is countersunk to adapt it to serve as a guideto direct the points of the tack into the cavity of the die L. The forward ends or jaws of the clamp s are forced together by a spring, a, and are stopped in the right position by a pin,-'u, attached to the bed-late A, and against which the said jaws strike. The clamp s is opened by the lower end of the lever 'w,which is forced in between the inclined inner edges of the parts of the said clamp s. Thelever w is pivoted at its middle part to the upright frame B or to a lug or arm formed upon or attached to the said frame.

To the upper end of 'the lever to is pivoted IIS a small roller, :0, the face of which rests against the face of the cam E, formed upon or attached to the shaft 0, so that the guide-clamps s will be opened at the proper time by the revolution of the said shaft 0.

To the rear part of the shaft 0 is attached an eccentric, y, with which is connected, by a strap or other suitable means, the upper end of a piston-rod of an air-pump, z, with the discharge-opening of which is connected a tube, 1. The tube 1 passes along the side of the frame B, and its forward end, or a nozzle attachedto its forward end, is secured in such a position as to direct the air-blast against the die L. The eccentric y is so arranged upon the shaft 0 that a blast of air will be driven across the die L when the clamps s are open, so as to blow off any chips or particles of metal that are cut from the tack-heads, and thus keep the said die L clear.

In using the machine the tacks to be operated upon are placed in the drum It, are transferred to the track U, and pass down the said track to the clamps a, in the manner hereinbefore described. As the track U is pushed back, withdrawing the clamp a from between. the dies K L, the picker f catches the downwardlyprojecting end of the tack next above the jaws c, and draws the tack through the said jaws c to the opening e,whereithangs suspended byits head. As the die K moves up out of the way the track U moves forward, bringing. the suspended tack directly between the dies K L. As the die K moves downward and comes in contact with the head of the tack the lower end of the track U also moves downward, and the end of the tack is guided into the cavity of the die L, by the countersunk hole t in the clamp s. As the point of the tack enters the cavity of the lower die, L, the upper die, K, stops an instant in its descent, and at the same time the clamp s is opened and the track Uis drawn back, withdrawing the clamp afrom the tack and leaving the tack between the said dies K L. The die K then continues its descent and forces the tack into the die L, cutting its head into exactly the desired size and shape. As the track U moves back the picker f draws another tack through the jaws 0 into theopening e, ready to be operated upon in turn. The passage of the tack through the jaws 0 causes it to take a proper position in the opening 6, so that all the completed tack-heads will have the same position with respect to the bodies of the tacks, and at the same timewill be uniform in shape and size.

Any desired shape can be given to the tackheads by making the dies K L of the required shape.

Having thus described my in vention, I claim as new and desire to secure by Letters Pat- 5 shown and described.

2. The track U, formed of parallel bars beveled on the upper surface of the lower end of the'widened part, in combination with theapron V, whereby the tacks whose points fail to enter between said bars may slide off to the apron and thence to the drum, as set forth.

3. The combination, with the die K, of the U, of the hinged supporting-bar Y, substantially as herein shown and described, whereby the forward end of the track is allowed to have alongitudinal and avertical movement,as set forth.

6. In a machine for shaping the heads of tacks, nails, and rivets, the combination, with the track U and the driving-shaft O, of the springs g h, the levers i a, and the cams 1* q, substantially as herein shown and described, whereby a longitudinal and a vertical movement is given to the track, as set forth.

7. In a machine for shaping the heads of tacks, nails,and rivets, the combination of the clamps'a, having two pairs of jaws, c d, with anope nin g, 0, between them, the spring I), and the picker-platefisubstantially as herein shown and described, whereby the tacks are transferred, one at a time, from the track to the dies, T

as set forth.

8. In a machine for shaping the heads of 'tacks, nails, and rivets, the combination, with the dies K L, and the clamps to, attached to the track U, of the clamps 8, having countersunk hole t in their jaws, the spring a, and the stoppin 21, substantially as herein shown and described, whereby the points of the tacks are guided into the cavity of the lower die, as set forth.

9. In a machine for shaping the heads of tacks, nails, and rivets, the plunger H, con-

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