US379476A - Shoe-maker s pinchers - Google Patents

Description

(N0 Model.)

J. KNELL.

VSHOE MAKBRS PINGHERS.

No. 379,476. lPatented Mar. 13,l 1888.

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' ANirnn STATES JOHN KNELL, OF PHILADELPHIA, PENNSYLVANIA.

SHOEnMAKERS PINCHERS.

SPECIFICATION forming part of Letters Patent No. 379,476, dated March 13, 1888.

I Application filed December 27, 18S?. Serial No. 259,054. (No model.) l

ready opening and closing of the pinchers, andv to strengthen the construction of the adjustable hammer-head with which these pinchers are usually provided.

In the accompanying drawings, Figure l is a perspective view or" a pair of shoemakers pinchers constructed in accordance with my invention. Fig. 2 is a plan view of the same.

Fig. 3 is a side view with the detachable hammer-head in section, and Fig. 4 is a transverse section on the line l 2, Fig. 3.

A and B represent the two levers of the pinchers, which are pivoted together by means of a pin, a, the short arms of the levers being curved and provided with engaging-teeth, as usual. The lever B of the tool is of substantially the same width throughout, and the lever A is expanded at the joint, by reason of the formation on said lever of side wings, b, which carry the pivot-pin a, this construction permitting the ready insertion and removal of the lever B by simply driving out the pivot-pin a, which is made considerably larger than usual in order to give strength to the joint. The wings b on the lever A have rearwardly-projecting fingers b', which t snugly against the sides of the lever B and serve to keep the same properly in line with the lever A, and thus prevent any twisting or wabbling of the jaws of the tool.

From the under side of the short arm of the lever A projects a threaded stud, d, which is adapted to a threaded socket in the hammerhead D,with which this class of tools is usually provided, this hammer-head being adjustable, so as to vary its position in respect to the jawsan operation which is required when the tool is used for lasting. In order to insure a solid bearing of the hammer-head on the threaded stern, however, when said head is projected, one or more washers, f, are interposed between the end of said stem and the bottom of the socket in the hammer-head, as shown in Fig. 3.

The formation'of the threaded stem on the lever A for the receptionof the hammer-head provides a much stronger construction than when the threaded stem is formed on the hammer and screwed into an opening in the lever, this being the plan now in general use.

On the underside of the lever B, a short distance from the outer end of the same, is a finger, g, which serves to prevent the hand from slipping off the tool, and also to insure the holding ofthe tool in the hand in such position that the little finger may act upon the upper side of the long arm of the lever B, so as to depress the same in order to open the jaws. (See dotted lines in Fig. l.)

Lugs 1) project from the opposite sides ofthe lever B in the rear of the pivot-pin a, these lugs serving, by contact with the under side of the wings b of the lever A, to limit the movement of the levers toward each other and prevent excessive strain upon the toothed portions of the jaws of the levers.

I claim as my invention- 1. The combination, in a pair of pinchers, of the two levers and the pivot-pin therefor, one of said levers having side wings carrying the pivot-pin, whereby an opening ofthe full width of the other lever is formed for the reception of the latter, all substantially as specied.

2. The combination, in a pairof pinchers, of the two levers and a pivot-pin therefor,with side wings carried by one of the levers and having rearwardly-extending fingers bearing upon the sides of the other lever in the rear of the pivot, to prevent twisting of the levers, all substantially asspecied.

3. The combination, in a pair of pinchers, of alever having projecting side wings, a pivot-pin carried thereby, and a second lever tting between said sidel wings and having laterally-projecting lugs bearing upon the under sides of the same, to serve as stops, all substantially as specified.

4. The combination, in a pair ofpinchers, of the pivoted levers, one of which has a projecting threaded stem with a hammer-head, having a threaded socket for the reception of said stem, all substantially as specitied.

5. The combination, in a pair of pinchers, bent or curved projecting finger, g, serving as of the pivotcd levers, one of which has a proa stop for the hand, all substantially as specijecting threaded stem, the hammerhead haved. ing a threaded socket for receiving said stem, l In testimony whereof Ihave signed my name 15 5 and a washer interposed between the end 0f to this specification in the presence of two subthe stem and the base of the socket, all subseribing witnesses. stantially as spccied.

6. The combination, in a pair of .pinchers, JOHN KNELL' of two levers pivoted together, the long arm Witnesses: Io of one of said levers vhaving on the outer side WILLIAM D. (DONNER,

and some distance from its end a forwardly HARRY SMITH.

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