US601772A - Wrench - Google Patents

Description

(No Model.)

T. FORSTNIER.

WRENCH.

Pa.tentedAp1-. 5,1898.

N ITED STATES PATENT rrron,

THOMAS FORsrNEaIOF New ULM, MimvnsorA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 601,772, dated April 5, 1898. Application tiled March Z3, 1896. Renewed January 29,1898. Serial No. 668,496. (No model.)

To all whom it may concern:

Be it known that I, THOMAS FORsTN-ER, a citizen of the United States, residing at New Ulm, in the county of Brown and State of Minnesota, have invented certain new and useful Improvements in VVrenchesg' and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable Others skilled in the art to which it appertains to make and use the same. j

This invention relates to certain new and useful improvements in wrenches and ithas for its objects, among others, to provide a simple and cheap construction ofwrench adj ustable to accommodate it to different sizes of nuts or other artioles'to be held therein and tion will hereinafter appear, and the novel features thereof will be specifically defined by the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a partV of this specification, and in which-'- Figure l is an elevation of my improved wrench. Fig. 2 is a'longitudinal section through the same. Fig. 3 is a section on the line 3 3 of Fig. l.

Like letters of reference indicate like parts throughout-the several views.

Referring now to vthe details of the draw-I ings by letter,A designates the stationary jaw, and B its shank. The jaw extends at an angle other than a right angle from the shank,

as shown, and may or may not be serrated upon its acting face. The outer or upper f ace of the shank is toothed, as seen at C.

D is the movable jaw, whose bearing-face extends from its shank D at the same angle as the bearing-face ofthe jawof the fixed shank does from its shank, so as to be parallel therewith, and its acting face may or may not be serrated. v

The shank of the movable jaw has the clamp or sleeve portion E thereon, which em' braces the shank of the .xed jaw, as shown,

-on the shank of the fixed jaw.

I is a pin passed through the shank of the kmovable jaw beneath the pivot of the arms thereon, and around this pin is a spring J, one around each end of the pin and held thereon by the heads of the pins, one end of each spring bearing against a notch or shoulder o' of the armsin proximity to their pivots and the other ends seated lin grooves or notches j in the undersides of the said arms, as shown.

The bodyportion of the dog is formed with a recess K,`in which is arranged the eccentric lever or cam L, mounted on the pin or bolt G and extended to form a handle or thumb-piece M.

The operation is apparent and will be readily understood from the foregoing description when taken in connection with the annexed drawings.

l The movable jaw is moved backward to ad- V-mit the nut or other article between the jaws, andk then it is pressed forward until it en- Vgages the nut or other article, and then the cam or eccentric lever is turned backward, which forces the movable jaw tightly against the nut or other object and also holds the dog in engagement with the toothed portion of the shank of the fixed jaw, and the article will be securely held between the jaws of the wrench. It will=be observed that thevmovement of the thumb-piece accomplishes two IOO 1. The combination with the fixed jaw and its shank, of the movable jaw, the arms pivoted on its shank, the dog carried by the said arms, and the eccentric lever mounted on the dog, as set forth.

2. The combination with the fixed jaw and its shank, of the movable jaw, the arms pivoted on the shank of the movable jaw, the dog carried by the arms, the eccentric lever mounted on the dog, and the springs on the Ashank of the movable jaw acting on the said arms, as set forth.

The Wrench described consisting of the fixed jaw, its toothed shank, the movable jaw,

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