US135856A

US135856A - Improvement in wrenches

Info

Publication number: US135856A
Authority: US
Publication date: 1873-02-11
Anticipated expiration: 1890-02-11

Description

SMILEY.

Wrenches.

Patented Feb.1|,873.

INYENTOR.

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AM. PHom-Lm/aG/wmc co. N1( osea/ms PRocsssJ UNITED STATES y PATENT OFFICE.

JOSEPH SMILEY, OF FRANKLIN, PENNSYLVANIA.

IMPROVEMENT IN wRENcHEs.V

Specitcationforning part of Letters Patent No. 135,856, dated February 1l, i873.

To all whom it may concern: Beit known that 1, JosEPH SMILEY, of

. Franklin, in the county of Venango and State being had to the annexed drawing making a partfof this specification, and vto the letters and figures of reference marked thereon.

Figure l-of the drawing is a representation of a side view, part sectional, ot' my wrench. Fig. 2 is a detail view.

This invention has relation to wrenches 5 and consists ih the construction and novel arrangement ofthe spring-catch, in the head ot' the stationary jaw, adapted to engage with the reethof the shank of the movable jaw, thereby fixing the same in position lwhen adjusted. The object of this invention isto provide the hand-wrench with a simple-and convenient lock, a'vhereby with but little exertion the jaws may be fixed in position relatively whenv properly adjusted to the work.

In the accompanying drawing, the letter A designates the handle carrying the stationary jaw B of the wrench. The upper portion of the handle or shank is centrally recessed to form a socket, a, for the reception of the stern y of the movable jaw. G indicates the movable jaw, which is provided with a stem, b, designed to extend downward into the socket c, and serrated 011 its front edge to engage with the spring catch E. At the upper part of the Asocket a it is extended forward and backward,

as well as somewhat laterally, to form a seat in the body of the stationary jaw, for the reception of the springcatch. rlhis catch is in the form ofa rectangle, open centrally for the passage of the stem of the movable jaw, and `provided at its rear end with a stud, c, which projects through an opening, e, in the rear wall 0f the recess,'in which the spring-catch is located. Before this catch, within the recess, is arranged a spiral spring, s, which serves to push the catch toward the serrated edge of the stem of the jaw C. A removable steel pin, z, is usually employed to engage with the notches or interspaces of the serrated edge, as it can be easily replaced when worn orbroken.

The lower or stationary jaw is made shorter at v the heel end than the movable'jaw, for the purpose of protecting the stud when the wrench is used as a hammer, the projecting end of the movable jaw serving for this purpose. i

In the application of this instrument, one hand is ordinarily sufficient. The thumb being placed upon the stud c to disengage the catch from the stem b, the jaw C is moved outward and adjusted to the work by the forenger. The stud c is then relieved from press ure, and the catch allowed to engage with the serrated stem, thus securing the jaws in their relative position.

For convenience in the manufacture, the inner face of the stationary jaw may consist 0f a removable plate, as shown at D.

What I claim as my invention, and desire to secure by Letters Patent, is-

In a hand-wrench, the combination, with the recessed and perforated stationary jaw B, of the serrated stem b of the movable jaw, and the spring-catch E, and thumb-stud c, sub` stantially as specilied. I

In testimony that I claim the above I have hereunto subscribed my name in thevpresence of two witnesses.

JOSEPH SMILEY.

v Witnesses:

MosEs J. GOLMAN, I; L. DEWooDY.