US1182763A - Wrench. - Google Patents

Description

' w. R. GREEN.

WRENCH.

, 915. 1,182,763. Patented May 9,1916.

Swuwwtoz Wz'Hz'aJm Ray Green.

Uhil WILLIAM ROY GREEN, 0]? TRINIDAD, COLORADO.

WRENCH.

Specification of Letters Patent.

Patented May 9, 1916.

Application filed August 19, 1915. Serial No. 46,322.

To all whom it may concern:

Be it known that I, WILLIAM ROY GREEN, a citizen of the United States, residing at Trinidad, in the county of Las Anlmas and State of Colorado, have invented new and useful Improvements in Wrenches, of which the following is a specification.

The present invention relates to improvements in wrenches, and especially to an attachment whereby an ordinary wrench may be easily and quicklv converted into a pipe wrench.

In carrying out my invention I propose to construct an attachment for wrenches to convert a nut wrench into a pipe wrench, said attachment being in the nature of a block or jaw which is positioned upon the shank of the stationary jaw and has a fulcrum engagement with the head of the stationary jaw whereby the same will be automatically forced into gripping position with a pipe or tube when pressure is exerted upon the handle of the wrench in one direction, and also whereby said pressure will be relieved, to permit of a ratchet engagement with the said tube or pipe, when the handle of the wrench is moved in an opposite direction.

It is also my purpose to provide a wrench attachment in the nature of a supplemental jaw which is loosely positioned upon the shank of a stationary jaw of the wrench and which is provided with a depression or pocket to receivethe movable jaw of the wrench, the engaging face of the supple mental jaw being curved inwardly from its end and provided with transverse teeth, and its said end having an eccentrically mounted member which, when contacted by a tube or pipe will revolve to grip the same as well as to force the supplemental jaw to contact with its fulcrum engagement with the movable jaw of the wrench to swing the same and as a consequence force the teeth of the said supplemental jaw into tight engagement with the tube or pipe.

It is a further object of the invention to provide an attachment for wrenches which shall embody the desirable features of simplicity, cheapness, strength, and thorough efficiency in operation.

With the above and other objects in view, the improvement resides in the construction, combination and arrangement of parts set forth in the following specification and falling within the scope of the appended claims.

The accompanying drawing illustrates a simple and satisfactory embodiment of my lnvention.

In the said drawings: Figure 1 is a side elevation of an ordinary wrench with my improved supplemental aw attached to the movable jaw thereof, Fig. 2 is an elevation of a portion of a Wrench with my auxiliary jaw arranged thereon and shown in section, Fig. 3 is a detail sectional view approximately on the line 00-00 of Fig. 1, and Fig. 4: is a perspective view of the auxiliary jaw.

The wrench is broadly indicated by the numeral 1 and includes a stationary jaw 2 having an angular integral shank 3 provided upon one of its edges with teeth 4 and the movable jaw 5 which includes a carriage 6 and which is mounted for slidable movement on the shank 3.

The numeral 7 designates a spring pressed member which is arranged transversely in the handle portion of the wrench and which serves as a contact member or abutment for limiting the movement of the sliding jaw in the direction of the handle.

The carriage 6 is provided with a transverse slot or cut-away portion to receive a round nut 8 having peripheral threads 9 which engage between the teeth 4 of the shank 3, the said nut being pivoted to the carriage, as at 10. The nut 8 has its threads 9 cut away longitudinally a distance slightly in excess of the width of the shank 3, as indicated by the numeral 11, and when the nut is revolved so as to bring the cutaway portion 11 opposite the teeth 4, the carriage 6 may be quickly adjusted to bring the movable jaw toward or away from the stationary jaw, as will be readily understood. The screw 8, it will thus be noted need only be rotated to adjust the jaw 5 when the said jaw is in close proximity to an object between the same and the jaw 2, but, of course, the threads of the nut serve'as a means for sustaining the jaw 5 in an adjusted position with relation to the jaw 2.

The supplemental or auxiliary jaw is indicated by the numeral 12 and is formed from a block or casting of some suitable hardened metal, such as harveyized or Krupp steel. The supplemental j aw includes a body portion 13 which is provided with an opening 145 whereby the same may be arranged upon the shank 3 of the wrench. The side walls of the opening are adapted to snugly engage the side walls of the shank 3, but the opposite .or end walls provided by the said opening 14 are inclined or beveled from the working face of the jaw 12 to the opposite face or end thereof, as indicated by the numerals 1515. The body 13, below the opening 14, has its working face curved inwardly and provided with transverse teeth 16, and the end of the said member 12, below the teeth 16 is bifurcated and the walls formed by the bifurcation are provided with alining openings to receive the trunnions 1717 which project eccentrically from the ends of a toothed roller 18. The teeth 18 of the roller 18 project slightly above the peripheral rounded edges of the bifurcated end portions of the auxiliary jaw 12, and as the rear face of the body 13 abuts with the working face of the jaw 5, it will bev noted that when a tube or pipe is contacted by the teeth 18 of the roller 18, the member 12, being fulcrumed upon the jaw 5, will be swung thereon to bring the teeth 16 into tight or biting engagement with the said tube or pipe. The angular or inclined walls 1515 provided by the opening 14 permit the tilting or swinging of the auxiliary jaw 12 and also serve as means for limiting the said tilting movement of the auxiliary jaw.

In order to effectively sustain the auxiliary jaw 12 upon the stationary jaw 5, I provide the portion thereof which I have referred to as the face and which, for distinction, is indicated by the numeral 19, with an angularly projecting portion 20 having therein a depression or pocket 21 within which is received the outer portion of the said jaw 5. The pocket 21 is of a greater depth than the length of the portion of the jaw received therein, and the lower portion of the pocket, beyond the jaw 5, is arranged angularly of the said jaw, as indicated by the numeral 22, so that a free rocking movement of the auxiliary aw 12 upon the jaw 5 will be afforded.

From the above description, taken in connection with the accompanying drawings, it will be noted that I have constructed an extremely simple, cheap and tho-roughly effective device for the purpose intended, one which will automatically grip a pipe or Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

tube when contacted by the said pipe or tube, one which, while. primarily adapted as a removable element, may remain a fixture of the wrench and it is thought that the simplicity and advantages of the structure will be apparent to those skilled in the art to which such invention appertains without further detailed description.

Having thus described the invention, what I claim is:

1. The combination with a wrench including a movable jaw mounted upon the shank of a stationary jaw, of an auxiliary jaw, said jaw including a body portion arranged upon the shank of the stationary jaw and tiltable with respect to the said shank, said auxiliary jaw having its working face curved in wardly and provided with transverse teeth, an eccentrically j ournaled roller member at the end of the working face of said auxiliary jaw, and the rear face of the said auxiliary jaw being contacted by the working face of the movable jaw.

2. The combination with a wrench includmg a movable aw mounted upon the shank of a stationary jaw, of an auxiliary jaw loosely mounted on the shank, said auxlliary jaw having its working face provided with transverse teeth and its end, beyond the teeth, bifurcated, a toothed roller eccentrically journaled in the bifurcation, and the rear face of the auxiliary jaw being contacted by the working face of the movable jaw at the outer end thereof.

3. The combination with a wrench including a movable aw mounted upon the shank of a stationary jaw, of an auxiliary jaw arranged upon the shank and tiltable with respect thereto, the working face of the auxiliary jaw having transverse teeth and having its end bifurcated, a toothed roller eccentrically trunnioned in the bifurcation, the rear face of the auxiliary jaw having an angular projection provided with a pocket to receive the outer end of the working face of the movable jaw, and the inner portion of the pocket being disposed angularly of the said movable jaw. i

In testimony whereof I affix my signature in presence of a witness.

WVILLIAM ROY GREEN.

Witness:

BENNETT S. JoNEs.

Washington, D. 0.

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