US1782752A - Wrench - Google Patents

Description

i UNl 'lfEn- "s ri ;T';zs PATENT-OFFICE? Patented Nov. 25, 1930 AUGUST WEISLER, or rERRYvr LE; mssouar, ASSIGNOR or ONE-'I IALI no r. .T.v

HAGERLING, or sr. LOUIS, MISSOURI a f WRENCH Application filed February 26, 1929. -,Seria1 No. 343,762.

able jaw.

This invention relates to the class of tools and pertains particularly to'a Wrench.

The primary object of this invention is to provide an improvedwrench structure of the type embodying a fixedjaw and a shiftable aw swingable relative thereto, an improved means being employed for controlling the movement of the shiftable jaw and for se curing the same against accidental shifting in any adjusted position.

A further object of the invention is to provide a wrench oflight butstrong and durable construction, easy to manipulate and comparatively inexpensive to manufacture.

The invention willbe best understood from a consideration of the following detailed description taken in connection with the accompanying drawing forming a part of this specification, with the understanding, however, that the invention is not confined to any strict conformity with the showing of the drawing but may be changed or modifiedso long as such changes or modifications mark no material departure from the salient features ofthe invention as expres d i th app nded claims. V In the drawing Figure 1 is a View partly in side elevation and partly'in section of the wrench embodying the present invention; 7

Figure 2 is a plan view of the central portion of the wrench looking toward the shift- Referring to the drawing in detailwherein like numerals of reference indicate corresponding parts-throughout the several views,

the numerals 1 and 2 indicate the movable and fixed jaws respectively of the wrench embodying this invention, which jaws have respectively the shanks 3 and 4. The shank 4 forms onefurcat ion of the bifurcated end of a handle 5, the other furcation being relatively short as shown and reduced at its end as indicated at 15.

a; The working face of the shiftable jaw 1 is preferably toothed or serratedias indicated at 6 while the opposed face of the'fixed jttWlS preferably smooth. a a v a Between the shank?) and jaw 1 of the shiftable jaw thereis formed the passage 8 which receivesin the inner end the ipo sti9which pro ects'from and is, formed integral with the inner face ofthe fixed jaw -atthe inner end thereof, as SHOWILf-ThlSPOSbQhas an interiorly threaded bore 10 which passes lonthrough a washer 12 overlying the outer end of the passage-8 and resting against the back f the shiftable jawyin the ,manner shown,

the head 13501? the 'jbOlt bearing against the outer face ofthe washer.

At its rearend the shank portion 3*of-the shiftable jaw is bifurcated as indicated at 14 and receives between the furcations the-arm ;1 which forms apart oftheiYshapedaend i ofthe handle 5. The arm 15 is providedwit-h the "elongated transverse" passage '16 Tfor the reception ofa pivot pin 17 which-passes from one to thenother of the furc'ationsand thus pivotally se'cures the shiftable ja'wandits shank tothe'shan'k of the fixed'jaw;

Forwardlyof the arm 15' theshanks 3 and 4 are provided" with-theopposed recesses 18 in each ofwhichone'end of a coil spring 19' positions as shown, thisispring' serving to 1 normallyforce the jawsapartw a Secured totheback of the (shank 3 of the 'shiftable aw is asubstantially" Z-shaped latch 20 one leg thereof, as" for example the leg 21, being pivotally secured to, the shankby tlie screw. 22 while the other leg, indicated by the numeral 23 iszspacedtaf-suflicient dis-- tance. from the back- 10i the djawto engage over the head 13ofthebolt11, From this it will be readily seen 1 that 'rwhile -the: bolt may bejrotated between the thumb and forefinger without moving the latch 20, to bring the jaws together or; movethem @Partas desired, it is impossible. to shift the movable jaw towards the fixed jaw without turning the screw unless the latch is swung to one side so that the portion 23 thereof will be removed from contact with the head 13 of the screw.

From the foregoing description it will be seen that the wrench structure embodying this invention is of such character that it may be inexpensively manufactured and assembled, is unlikely to get out of order due to the few movable parts of which it is made up and may be conveniently manipulated for use.

Having thus described my invention what I claim is 1. A wrench comprising a jaw, a shank carried by the aw and a handle connected to the shank, a shiftable jaw, a shank carrying the shiftable jaw, a pivotal connection between said last shank and the first mentioned shank, said shiftable jaw having a passage therethrough from the front to the back face, a post rigid with the first mentioned jaw in position to extend into said passage, a headed screw member extended into said post through the outer end of said passage and having the head thereof actingupon the back of the shiftable jaw, and resilient means normally forcing said shiftable aw outwardly against said screw head.

2. A wrench comprising a jaw, a shank carried by the jaw and a handle connected to the shank, a shiftable jaw, a shank carrying the shiftable jaw, a pivotal connection between said last shank and the first mentioned shank, said shiftable jaw having a passage therethrough from the front to the back face, a post rigid with the first mentioned jaw in position to extend into said passage, a headed screw member extended into said post through the outer end of said passage and having the head thereof acting upon the back of the shiftable jaw, resilient means normally forcing said shiftable jaw outwardly against said screw head, and a shiftable latch member carried by the shiftable jaw and'engaging the screw head to prevent movement of the shiftable jaw on the post independently on the screw.-

3. A wrench comprising a pair of jaw members each having a shank, a handle rigid with one of said shanks,'means providing a loose pivotal connection between the other shank and the handle whereby movement of the said other shank and the associate jaw is permitted toward or away from the adjacent jaw and shank, a rigid post formed in tegral with the fixed jaw forwardly of the pivotal connection between the jaws, said shiftable j aw having a passage therethrough for loosely receiving the post and said post having a threaded passage extending longitudinally therethrough, a control screw extending through the passage of the shiftable and threadably engaged in said post and having a head overlying the shiftable jaw adjacent the passage therethrough, an oscillatable latch carried by the shiftable aw and adapted to engage said screw head to prevent movement of the shiftable aw toward the fixed jaw, and a spring member between the post and the pivot point of the jaws normally urging the jaws apart.

j aw

In testimony whereof I hereunto affix my I signature.

AUGUST WEISLER.

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