US313900A - Machine for making picks - Google Patents

Description

(No Model.)

S'T; TYLER.

MACHINE FOR MAKING PICKS.

No. 313,900. Patented Mar.,17, 1885.

NY PETERS. Pnm'unw much.

SAMUEL T. TYLER, OF IRONTON, OHIO.

MACHINE FOR MAKING PICKS.

SPECIFICATION forming part of Letters Patent No. 313,900, dated March 17, 1885.

Application filed July 8, 1884.

To aZZ whom it may concern.-

Be it known that I, SAMUEL T. TYLER, a citizen of the United States, and a resident of Ironton, in the county of Lawrence and State of Ohio, have invented certain new and useful Improvements in Means for Forming Ax- Polls and other Tools, of which the following is a specification.

My invention relates to means for completely forming what is known as the common Hunt eye in pickaxes and similar tools.

It consists in certain peculiar mechanism and a series of successive operations by which the ax poll and eye are completely and rapidly formed.

The invention will be first fully described in connection with the accompanying drawings, and then particularly referred to in the claims.

Referring now to the drawings, in which like parts are represented by similar reference-let ters wherever they occur in thedifferent views, Figure 1 is a front elevation of part of an ordinary punching or forming press, the machine here represented being known to the trade as the Washoe press. Fig. 2 is a perspective view of a pick-poll completed by my improvements. Fig. 3 is a perspective view of one of the pair-dies and the punches used in the first operation. Fig. 4; is a similar View of the second die and punch. Fig. 5 is avertical transverse section ofthe aX-poll after it has undergone the first operation.

The frame of the press consists of the bedplate A and uprights B, with the verticallyreciprocating frame 0, fitted to slide in the uprights and actuated by the eccentrics D,which are secured upon shaft E. The shaft is driven by suitable mechanism, and is thrown in and out of gear by a clutch, (not shown,) so that the machine can be readily started and stopped at each stroke of the frame carrying the dies. The jaws F are swung in the reciprocating frame, and are closed when the frame descends by the inclined projections a, which are in one piece with the bed-plate A. These projections a, as well as the abutting surfaces of the squeezing-jaws F, should be capped with steel to prevent wear. WVhen the frame is elevated by the cams, the jaws are opened by springs f.

I have above described the machine with some particularity, because I have used my (N0 model.)

invention in connection with it, and it is the best one I know for this purpose; but the machine ready to receive my improved dies and punches and its operating mechanism. is well known and is no part of my invention. Iwill now proceed to describe my invention and how it is applied and used in connection with the press just described. Its application to machines for analogous uses will then be readily understood by those skilled in the artto which my invention appertains.

It will be observed that there are three sets of squeezing-dies arranged in pairs right and left and secured in the swinging jaws F. The first pair, G, Fig. 2, on the left of the machine, have their opposite walls substantially parallel and in a vertical plane when the dies are closed. Beneath the vertical center of the dies is arranged a punch, H, of about the size of the outer portion of the aX-eye, and of a length to pass up into the heated bar of which the aX-poll is formed a distance equal to a cross-section of the bar. In the same vertical plane, and secured to the vertically-reciprocating frame E, is another punch, I, arranged to be grasped by the neck of the dies when closed, and leaving a space between it and the upper arched portion of the dies for the metal to be forced around it and between the dies to form the lugs j, Fig. 5, thus leaving the web 9" between the two punches H I. The blank J, Fig. 5, is now formed, and as the frame ascends it is released from the first pair of dies and placed in the second pair, K. These are substantially of the same shape as the jawsG; but the punch L vertically beneath them is made tapering at the top and of a length that the tapering upper end will pass up through the neck of the dies when the second set of dies come down with the blank J between them. The punch L opens the eye through the blank, leaving it of substantially the same shape as Fig. 5, except that the web j is removed, the surplus metal going into the lugs and making them somewhat thicker, as the punch L is less in cross section than the punches H and I.

The third pair of dies, M, below the necks are the exact counterpart of the exterior of the ax-poll, and the punch N vertically beneath them is tapering and of the exact size of the ax-eye. When the third pair of dies close, the lugs j are therefore compressed together, and as the dies are carried down the punch N passes up through the blank, completing the poll and eye.

The upper part of the second set of dies is arched a little higher than the first pair,

and the third or finishing pair have their upper arched portion a little higher than the second. This is to allow for'any surplus metal to be forced up by the following punch.

To make an aX-poll, a heated bar of the proper size is placed in the transverse opening in thefirst pair of dies, the machine is started, and the dies brought down. This forms the blank, Fig. 5. The blank is then removed and placed in the second pair of dies. Then these are brought down, the webj is removed by the punch L, when the die-carrying frame is again elevated, the blank is removed and placed in the third or finishing pair of dies, M. As these close in descending, the lugs j are partially closed, and the punch N, passing up through the blank, finishes the blank. The ax-poll is thus finished at one heat.

What I claim as new, and desire to secure by Letters Patent, is

1. In a machine for forming aX-polls, the combination, substantially as specified, of the squeezing-dies G, K, and M,with the punches H, I, L, and N, the first pair ofdies having the punch H, arranged to pass partially through the blank held by the dies, and the upper punch or plug, I, arranged to close the upper opening of the dies and leave space upon each side for the metal which forms the lugs j of the aX-poll, and the second pair of dies being of substantially the same shape as the first pair and having the pointed punch L, arranged to pass through the aX-eye and the dies, and the third pair of dies being below the neck the counterpart of the aX-poll and the punch N of the size and shape of the aX-eye.

2. The combination of the swingingjaws F and the dies G, K, and M, arranged in pairs in said jaws, the dies G and K being of the same shape and having their opposite walls substantially parallel, and the third pair of dies, M, being the shape of the finished poll, with the punches H, I, L, and N, for the purpose ofcompletely finishing ax-polls, substantially as specified.

3. In combination with aforming-press such as described, the dies G, arranged in the swinging jaws F, with the punch H,arranged to pass partially through the blank as the dies descend, and the punch Larranged between the dies and to close the neck, leaving a space be tween said punch and the upper arched portion of the dies for the lugs j, whereby the blank J, Fig. 5, is formed at one stroke of the frame carrying the dies.

SAMUEL T. TYLER. Vitnesses:

J. K. RICHARDS, J. R. NORTON.

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