US407167A - Cott and cynthia jane clark - Google Patents

Description

(No Model.)

J. CLARK. COMBINED PUNCH AND SHEARS.

No. 407,167. Patented July 16, 1889" UNITED STATES PATENT OFFICE.

JASPER CLARK, OF ELMIRA, NEW YORK, ASSIGNOR 'lO THEODORE O. NORTH- OOTT AND CYNTHIA JANE CLARK, BOTH OF SAME PLACE.

COMBINED PUNCH AND SHEARS.

SPECIFICATION forming part of Letters Patent No. 407,167, dated July 16, 1889.

Application filed May 9, 1889. Serial No. 310,186. (No model.)

To all whom it may concern: In order to operate the punch and also the Be it known that I, JASPER CLARK, a citishearshereinafterdescribed,Iprovide ahandzen of the United States, residing at Elmira, lever L, which is pivoted between cars at the in the county of Ohemung and State of New top of the front part of the frame A, as shown York, have invented certain new and useful in Figs. 1 and 2, the center of its pivot 'i be- Improvements in a Combined Punch and ing slightly in rear of vertical line drawn Shears, of which the following is a specificathrough the center of slide E, as shown in tion. Fig. 1. On the pivoted end of this lever I My invention relates to combined punching form a circular head G, the hole for the pivot- '0 and shearing devices; and the invention conbolt 1L being bored eccentrically through the sists in certain combinations and details of same, as shown, by which means this circular construction, as hereinafter more specifically head G is made to operate as an eccentric or set forth. cam when the lever is moved.

Figure 1 is a side elevation, partly in sec To avoid the friction that would otherwise I 5 tion. Fig. 2 is afront elevation with the front be caused, I mount in the upper end of the plate shown detached, and Fig. 3 is a plan slide E a large friction-roller F, which is prefview of the punching die or plate shown deerably made with its journals in a single solid tached. piece and set loosely in suitable bearings in The object of this invention is to produce the top of the slide, as shownin'Fig. 2, though 20 a combined punching and shearing tool for it may be otherwise secured to the slide, if

use in shops that can be operated by hand, desired. and which at the same time shall embody It will readily be seen that when the lever great power. is depressed this eccentric G will operate to To construct my improved tool or device,I depress the punch with great power and that g 2 5 make a strong cast-iron frame A, of the genthe movement will be exceedingly uniform eral form shown in the drawings, it being proand smooth. vided with a base or bed plate 13, which has In order to avoid the use of springs and flanges at its sides for bolting it fast to a supraise the punch after it has; been forced port. Within the front part of this frame I through the metal, Iconnect the slide E to the 0 secure a sliding block E, in the lower end of eccentric G by means of two small metal loops which is detachably secured the punch I, it or links a, one at each side, there being semibeing made detachable, so that punches of circular recesses or grooves cut in the sides various sizes may be used. At one side of of the slide at its upper end, thus leaving ears the slide E, I insert a plate I, as shown in Fig 0 for the links a to engage with, as shown in 3 5 2, against which set-screws r bear, so that said Fig 1. As thus arranged, it will be seen that plate can be set up to compensate for any the eccentric and the roller are held in conwear of the parts and cause the punch to tact at all times, thus preventing any lost move with accuracy in a direct line and regismotion between the lever and the punch, ter with the hole in the die-plate R, which, as while the parts are free to move together.

40 shown in Figs. 1 and 2, is held in place on the A stripper-plate I is adjustably secured to bed B by means of screws (1, which pass the frame by means of screws to, and has a through flanges Z 011 opposite sides of the hole in it through which the punch works, bed, and which permits this die-plate R to be and which operates in the usual manner to adjusted laterally to bring the hole or holes hold the piece being punched, and thus strip 45 therein directly in line with the punch, and it from the punch as the latter is raised. 5 also to be adjusted longitudinally on the bed As shown in Fig. 1, the rear portion of the to permit any one of the series of holes of frame A has an extension or vertical projecvarying size to be brought under the punch, tion 0, to the upper end of which I secure a the die-plate R, with its series of holes, being shear-blade I by means of bolts f f. To this 50 shown detached in Fig. 3. is pivoted a corresponding blade I, which has ICO a prolongation or arm I which terminates at a point directly over the hand-leverL a short distance in front of its pivot, and to which it is connected. by a link or bar. Z, as shown clearly in Fig. 1. It will thus be seen that this shear-blade is operated by the same lever that operates the punch, and that thus either the punch or the shears can be used whenever desired without any change whatever, though it is obvious thatwhen the punch alone is to be used for a considerable period the shear arm can be readily disconnected from the lever L, in which case the punch only will be operated.

In order to enable round iron to be readily cut by the shears, and thus more perfectly adapt the device to the varying needs of the ordinary workshop, I form at the ends of the blades projecting points, on which are formed curved blades 6 and 8', adapted to grasp, hold, and cut rods of metal, as shown clearly in Fig. 1.

The slide E is preferably made rectangular in cross-section and is held in its seat by a front plate D, which is removable. bles the slide E and its seat in the frame to be planed off true, and thereby secure accurate fit and movement. By this construction I am enabled to produce a compact and powerful tool, by which metal can be punched or cut by hand-power with great facility, and which will be of great use in workshops when ever metal is used.

This ena-' I am aware that a punch and shears have before been combined in one machine, and that it is not new to use a cam or a friction roller for similar purposes, and therefore I do not claim either of these, broadly; but

What I do claim is 1. The frame A, provided with the bed or base plate B,and having the slide E, provided with the friction-roller F, mounted in said frame, in combination with the hand-lever L, having the eccentric G formed thereon, and the connecting loops or links a, all constructed and arranged to operate substantially as shown and described.

2. In combination with the frame A, havl ing the pivoted lever L arranged to operate a punch, the fixed shear-blade I, and the movable blade I', having its arm connected to saidlever L, substantially as shown and described.

3.' The curved cutting-blades can d 6, formed on the projecting ends of the shear-blades,

for cutting round or other shaped rods, substantially as shown and described.

In witness whereof I hereunto set my hand in the presence of two witnesses.

JASPER CLARK.

WVitnesses:

CHARLES E. KERR, L. D. SHOEMAKER.

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