US1646608A - Wrench - Google Patents

Description

'Oct. 25,1927. r

I F. H. BRADSHAW WRENCH Filed June 22, 1925 INVENTOSR w m Q Patented Oct. 25, 1927.,

UNITED STATES FRANK H. BRADSHAW, F RENO, NEVADA.

WRENCH.

Application filed June 22, 1925. Serial No. 38,739.

This invention relates to improvements in wrenches and particularly represents a continuation in part of my presentpending application, Serial No. 704,965, filed April 8th, 1924.

The principal objects of my invention are to provide a wrench whose jaws may be very quickly adjusted to any desired setting, and when applied tothe work will remain automatically locked in engagement with the object; one which may be operated by a ratchet handle or by means of an ordinary brace; one which may be used as a chuck or handle for small tools of different kinds, as well as for a wrench; and one whose jaws are so constructed that they may be used as an adjustable learner.

The wrench is also of such form that it may be used either as a flat wrench, or disposed on a nut and the like in the same manner as a socket wrench. My wrench is therefore particularly suitable to be used where the nut itself is some distance from the operator and in a place inaccessible to the hand or an ordinary wrench.

' fective for the purpose for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views:

Fig. l is a side elevation of my improved wrench.

Fig. 2 is a vertical section of the same.

Fig. 3 is a cross section on the line 3-3 of Fig. 1.

Fig. at is a bottom plan view of one o the jaws.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes the body of the wrench preferably of cylindrical form, having at one end a reduced centrally located shank 2 which is provided at its extremity with a square tapered portion 3 to receive the aws of an ordinary brace.

Projecting diagonally through the body from one end to the-other in opposed and side by side relation are channels 4. These channels slidably receive, with a snug runningfit, the shank 5 of jaws 6, which are provided on one end of said shanks. The aws'are symmetical and are so disposed relative to the shanks that while the latter are in offset alinement transversely of the body, the jaws are located in direct opposed alinement with each other and centrally with respect to the body. The adacent faces of the jaws are parallel 'to each other and to the axis of the body, while the outer faces are conveXly curved and symmetrically tapered in a direction opposite to the slant of their shanks. Such outer faces are provided with longitudinal grooves or corrugations 7 to form reaming members, while the adjacent faces of the aws are vertically grooved as at 8 of such form as to receive the usual tapered shank of a bit etc.

The body 1 between the ends of the chan- 'pawls 12 adapted to enter the recesses 9 are mounted in connection with the ring and handle. A control sleeve 13 is turnably mounted on the handle and engages the inner ends of the pawls. This operates the same as an ordinary ratchet brace, to cause either pawl to be engaged or disengaged with the recesses, depending 011 whether the body is to turn with a right or left hand movement of the handle.

In operation it will be seen that if the shanks are moved up or down or in or out of the body, the jaws will be correspondingly moved to or from each other. This, as will be evident, will alter the span between the jaws and enable different sized nuts or bolt-heads to be engaged thereby.

To apply the jaws to a nut they are preferably first spread to clear the same in any suitable manner, and are then placed over the nut with the points or outer ends of the jaws resting on the surface surrounding the nut. The body is then pressed toward the jaws, a light oscillatory movement in a lateral plane being imparted to the body at the same time. This will cause the jaws to be moved toward each other, until they firmly engage the nut.

The shanks will then automatically lock in the body against further movement, causing the jaws to engage the nut with a viselike grip and enabling said nut or other member to then be carried with the wrench without slipping. It the body is then rotated either by means of the handle or through the medium at a brace applied to the member 3, the nut or bolt will of course be rotated likewise. The shanks rossing each other intermediate the ends of the body, the intermediate metal of said body beyond and between the shanks on both sides of the intersection, enables the body to have the necessary strength to resist fracture when turning or torsional pressure !S applied to the tool.

It the use of the handle is not desired the shanks are depressed into the body until their outer ends are clear of the sides of said body. The ring 10 may then he slipped upwardly and oil the body, together of course with the handle and pawls which form a unitary structure with said ring.

If the tool is to be used for reaming purposes a nut or other rigid object is forcedbetween the jaws, the width of said object being such as will give the desired diameter between the outer taces oi. the jaws. The jaws are then inserted into the orifice to be reamed, and the body is rotated in one main ner or the other, as above described.

It will. be seen from Fig. 4c particularly that the jaws, and especially their adjacent or operating faces, are disposed in a transverse plane not at right angles to the longitudinal. plane of their shanks.

This gives a more even balance of the jaws and assists the trictional lock of the shanks in the channels.

From the foregoing description it will be readily seen that .I have produced such a de vice as substantially fulfills the objects of the invention as .set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as retaining the handle means againstremoval.

2. A wrench comprising a body, opposed and cooperating jaws adjustably mounted therein. handle means for turning the body removably applied thereto, said handle meansincluding a ring turnable on the body, and means provided with the jaws for normally retaining the ring against removal and guiding the same in its rotative movement.

3. A wrench comprising a body having opposed diagonal channels therethrough disposed inv transversely oltset relation, shanks slidahle through the channels and projecting beyond one end of the body, and transverse jaws on said. projecting ends of the shanks; the gripping faces of the jaws being parallel to each other but the transversely extendin surfaces of said faces being disposed in planes other than at right angles to a plane parallel to the plane of longitudinal movement ot the shanks.

In testimony whereot I aflix my signature.

FRANK H. BRADSHAW.

and means liornied integral with the aws for normallyv

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