US825525A - Wrench. - Google Patents

Description

G. E. DORNON. WRENCH APPLICATION FILED APR. 17,1903.

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' able jaw member.

NTTED STATES PATENT orrron GEORGE E. DORNON, OF WILLOWGROVE, WEST VIRGINIA.

WRENCH.

To a/ZZ whom it may concern.'

Be it known that I, GEORGE E. DoRNoN, a citizen of the United States, residing at Willowgrove, in the county of Jackson andState of West Virginia',l have invented a new and useful Wrench, of which the following is a specification.

This invention relates to quick-action wrenches; and it has for its object to sim lify and improve the action of instruments o this character, to increase the efliciency, and to cheapen the cost of manufacture.

With these ends in view the invention consists in the improved construction and novel arrangement and combination of parts, which will be hereinafter fully described, and particularly pointed out in the claim.

In the accompanying drawings, Figure 1 is a side elevation, partly in section, of the improved wrench. Fig. 2 is a side elevation illustrating the manner of operating the mov- Fig. 3 is a perspective view of the movable jaw member detached.

Corresponding arts in the several ligures are designated by ike characters of reference.

The improved wrench comprises a stock or shank portion 10, having at one end the stationary jaw 11, which may be integral therewith and provided at its opposite end with the handle 12. Ratehet-teeth 13 are formed upon one side of the shank between the stationary jaw and the handle.

14 designates the movable jaw member, which is provided with a shank-engaging sleeve which may be described as comprising side members 14a 14", a back wal115, connecting said side members at their rear sides, and a bridge-piece 15a, which serves, together with the ]aw proper 14, to connect the front part of the side members of the sleeve. At the inner end of the jaw member 14 is a depending iange 15". Said Harige and the ridgeieee 15a cooperate to en age the toothe side of the shank, thus ena ling the jaw-carrying sleeve to be conveniently moved up and down upon the latter.

In the socket or recess 17, formed between the side members of the sleeve, is disposed a pawl 18, pivotally mounted near one end on a pin 19, while its other end extends normally past the flan e 15b and into engagement with one of t e teeth on the shank. This pawl is curved from end to end and is at all times entirely confined between and protected by the side members of the sleeve. The pivot end of the pawl is cut olf at an angle to Specification of Letters Patent.

application filed April 17l 1903. Serial No. 153.108.

Patented July 10, 1906.

form a shoulder 18a, and formed on one corner of the pawl is an angular thumb-piece 2,0, which .normally projects from and extends close to the end wall of the socket 17. The inner face of this thumb-piece is slightly long;` r than the diameter of a coiled spring 16 which is disposed upon the flange 15b and is confined and prevented from twisting out of proper position by the shoulder 18a and the end wall of the socket 17. It thus becomes unnecessary to employ centering-pins, and, as shown in Fig. 1, the spring merely bears upon the thumb-piece 20 and is held in proper position by the shoulder and the walls of the socket, as stated.

Within the edges of the side portions 14u and 14b of the sleeve and between the free end of the pawl 18 and the bridge-piece 21 are formed depressions 21, forming finger-grips to enable the operator to firmly grasp the implement with the middle, third, and little finger and thumb of the same hand which operates the wrench, leaving the index-linger free to operate the pawl by pressing upon the protruding 'end 20, as illustrated in Fig. 1. The movable member of the wrench is thus molded to fit the hand of the operator and enables him to adjust and operate the implement with one hand only, leaving the other hand free for other work. The recesses 21 being located below the operative or ratchet-engaging end of the pawl, the action of the latteris not obstructed by the fingers of the operator when grasping the implement while manipulating the pawl, as above described. When employing the implement in contracted or cramped localities, the movable aw may be adjusted toward the stationary jaw by pressing with the thumb upon the bridge-piece 15a.

The side walls of the sleeve are preferably rovided with openings 22, which are partly or the purpose of lightening and cheapening the construction, partly in order to reduce friction, and partly to prevent the accumulation of dirt within the sleeve, which would interfere with the successful operation of the device. It is to assist in this latter purpose that the front portion of the sleeve is made entirely open. Dirt, waste, and the like, which in course of time is apt to enter the sleeve, Will, owing to this construction, work out freely under the free end of the pawl 18.

Having thus described my invention, I

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claim as new and desire to secure by Letters Patent of the United States- 1o entirely interposed between land rotected at all times by the walls of the soc iet, and the fivoted end of the pawll being cut away to orm an angular recess one wall of which is normally arallel with the end wall of the 15 socket, a t umb-piece formed on one corner of the pawl and adjacent the recess, said thumb-piece normally projecting from the socket, and a coiled spring int'eposed between and bearing against the ange and thumb-piece, said spring being positively confined in o erative position by the walls of the recess an socket.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence Vof two Witnesses.

GEORGE E. DGRNON.

Witnesses: A

ZACHARY T. MoKAY., CHARLES M. CHALFANT.

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