US995668A - Wrench. - Google Patents

Description

E. FURRH. WRENCH. APPLIUATION FILED JAN.19,1911.

Patented June 20, 1911.

lllnlltillti TAT@ PAENT liltfltldt ELIJAH FURRH, OF GRAND SALINE, TEXAS.'

WRENCH.

Specification of Letters Patent. Patented June 20, 1911,

Application tiled January 19, 1911.

Serial No. 603,532.

To all whom 'it may concern:

Be it known that I, lhniarin' Finnii, a citizen of the lliiited States, residing at Grand Saline, in the county of Van Zandt and State of Texas, have invented certain new and useful improvements in lVrenchcs, ot". which the following is a specification, reference being had to the acconipanyinp` drawings.

This invention relates to improvements in quick adjusting wrenches and has for its object to provide a device of this character ol' extreme simplicity, and one which is very elicicnt in practical use and may be produced at a low cost.

A further object of my invention is to provide a wrench comprising a shank and stationary jaw, a movable ja f' adjustable on4 the shanle and nieans for rigidly locking the'niovable jaw in its adjusted position.

With the above and other objects in view, the invention consists of the novel features of construction and the combination and arangeinent of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which- `Figure l is a perspective view of a wrench embodying` my improvements; Fig. Q is a longitudinal section of the saine; and Fig. Sis a section taken on the line 3--3 of 2.

Referring in detail to the drawing 5 designates the shank of the wrench which is preleraliily of rectangular forni and is provided upon onev end with a handle portion 6. ythis handle portion, however, comprises but one-half of the entire handle of the wrench, the other portion thereof being a sepa 'ate clement 7 which is suitably fixed tothe handle portion (i by means of nails, screws, or similar fastening devices.

'lhe shank 5 is vformed upon its upper end with the usual stationary Wrench head 8 and upon one edge of the shank the saine is l'ornied with the ri :k teeth 9 which extend between the under side. of the head 8 and the end of the handle section 7 which provides ay stop shoulder l() to liniit the dowi'iward movement` of `the adjustable jaw ll. ',lhe jaw ll is l'ormed upon ouefedge with a inunber of teeth l- `for engagement with the teeth Sl .upon the 'l wrench shank 5.. U-shaped yoke plate lis secured at its ends lo the adjustable 'jaw ll and embraces the shank :3. lipon the intermediate transverse portion l of the yoke plate` a` resilient locking plate 14 is arranged. 'lliis plate is formed upon one formed from a single piece of resilient sheet niet-.il and is bent, as clearly shown in Fig. 2. One end of this plate is engaged updn the lower edge of the yoke plate and'extended upon the exterior thereof and bent over said yoke plate between the parallel portions thereof and is disposed between said plate and the ledge of the shank 5 opposite to the teeth 9. The lower end of this last named portion of the rplate is slightly lient or flanged, as indicated at 15. The bearing engagement of the free eiid of the plate upon the wrench shank normally tends to force the lower end of the interinediatel portion of the yoke plate outwardly away from the shank and dispose the teeth of the adjustable jaw into locking engagenient with the teeth t) on theshank. The jaw ll may be instantly released by simply pressing upon the lower end of the spring plate ift to force the saine away from the shank. The jaw may thus be easily and qiiicklyadjusted longitudinally upon theshank and when pressure is Areleased the spring plate llforces the 'jaw into locking engagement with the shank. i

From the foregoing description, it will be understood that the device may he operated with the use of but one hand, the operator grasping the handle and simply pressing upon the spring element with his thumb and then moving the yoke and the jaw 1l which is carried thereby with the same digi-t.

lVhile l have described a. preferable form of my improved wrench, it will be obvious that it may also be manufactured in many other desired forms without departing from.'y

the essential feature involved therein. Many other minor modifications 'in the forni and proportion of the various parts may also be resorted to without sacrificing any of the advantages of the invention.

Having thus described the invention whatis cla iined is:

"lhe herein described wrench comprising a lshank having a sta Aionary jaw formedon one end thereof and a handle on its other end, said shank also having rack teeth of its faces, a movable ja w on said shank including a yoke member embracing the wrench `shank, said jaw having teeth formed thereon for engagement with the teeth of the shank, the intermediate portion of said yoke member being inclined with relation to the opposed tace of the wrench shank, and a resilient locking,r plate having one end loont around one edge of the intermediate port-ion of the. yoke member und rigidly secured thereto, seid plate extending upon the outer lince of Said yoke member and engaging closely thereon, and bent over the other edge of' Suid yoke ineinbe-i and disposed between the intermediate portion of the saine and said wi'eneli shank, said last named portion of' the looking platte normally engaging closely with the Wrench shank and Spacing the intermediate inclined portion of the yoke member therefrom, said resilient locking plate yieldiiigly holdingi the teeth of the movable )uw in engagement With the teeth of Said shank.

In testimony whereofI I hereunto :illix my signature iii the presence of tivo witnesses.

LIGE FUR-RH.

lVitiiesSes Lne Roiy VViLiii'i'ia, JNO. M. DEAN.

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