US1257077A - Wrench. - Google Patents

Description

H. H. GARDNER.

WRENCH.

APPLICATION men FEB. a. 1911.

1,257,077. I Patented Feb. 19, 1918.

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UETE s HARRY I-I. GARDNER, or JoHNs'rown, PEnnsYnvAnIA;

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A tnbaiibn filed February 8, isi'v. Serial No. 147,453.

To all whom it my camera.-

Be it known that I, HARRY H GARDNER, a citizen of the United States, residing at Johnstown, in the county of Cambri'a and State of Pennsylvania, have invented certain new and useful Irnprovernents' in Wrenches, of which the following is a specification, reference being had to the accompanying drawings. p I

i his invention coinprehends certain new and useful improvements in toolsand relates particularly to awrench of the sliding jaw quick adjustment type. o

The invention has for its primary object a simple, durable, and efficient construction of device of this character in which the movable jaw which is mounted to slide along the toothed shank, is provided with a pivotally mounted locking bar having teeth designed to interlock with the teeth of the shank whereby the two jaws may be held in rigid relation to each other upon the work, a yoke encircling the shank and formed with laterally spaced lugs between which the handle portions of the locking bar is adapt ed to fit, whereby all strains will. be relieved from the pivot thereof. 7

And the invention also aims to generally improve devices of this class so as to render them more useful and commercially desirable.

With these and other objects in view, as will more fully appear as the description proceeds, the invention consists in certain constructions, arrangements and combinations of the parts that I shall hereinafter fully describe and claim.

For a full understanding of the invention,

reference is to be had to the following description and accompanying drawing, in which- Figure 1 is a side elevation of a wrench constructed in accordance with my invention, a portion of the movable jaw being broken away.

Fig. 2 is a top view of a portion of the wrench.

Fig. 3 is a transverse sectional view on line 3-3 of Fig. 1.

Corresponding and like parts are referred to in the following description and designated in all of the views of the accompanying drawing by like reference characters.

Referring to the drawing, the numeral 1 designates the shank of my wrench, and 2 the shank 1 and is formed, as shown, with a recess 6, in which the reduced locking bar 8 is received, sa d rediiced 'eiid being pivotally secured in the recess by a transversely extending rivet or pintle, as

shown. The locking bar 8 is formed intermediate of its ends with teeth 9 designed to interlock with the corresponding bevel teeth 10 that are formed on the'shank 1 so that after the movable jaw has been properly adjusted toward the fixed jaw and the two jaws engaged with the work, the engagement of the teeth 9 and 10 will hold the movable jaw 1 rigidly in position and the nut or the like may thus be easily turned.

The locking bar 8 is formed with a handle portion 11 which is designed, in the operative position of said bar, to extend along the flattened side 3 of the main handle 2, as clearly illustrated in the drawing.

Preferably, a brace bar 12 is welded or otherwise rigidly secured at one end to the heel end of the fixed jaw 4:, and extends parallel with the shank and in spaced rela tion thereto, the other end of said brace bar being welded or otherwise secured to an extended portion of a yoke 13 which encircles the shank at one end of the handle 2 and thus forms an abutment piece for the adjacent end of said handle. The bar 12 serves as an additional support for the fixed jaw 4: and also prevents straining of said jaw when the device is employed in connection with unusually heavy work as the strain on the jaw 4 will be carried to the handle 2. The yoke 13 is formed with laterally spaced retaining lugs 14 between which the handle portion of the'locking bar 8 is adapted to fit when the bar is in its operative position, whereby all lateral stresses or strains on the bar and its pintle or pivot, are compensated for,

15 designates a leaf spring which is preferably secured by a screw or similar fastening device 16 to the movable jaw 5 and which has its free end extending along the locking bar 8 so as to exert tension thereon in a direction to move the bar into operative engagement with the toothed shank '1 so 7 as to securely hold the parts as againstacor thumb cidental' displacement. Not only .does the bar '12 serve as a" brace between theqjaw 4; and the yoke 13, but it serves as a finger may be quickly adjusted by one hand of the operator while the thumb, for example, of the operator, remains in proper gripping relation on the bar 12 and the movement of the fixed jaw will not require the ,operators a thumb to be removed while said jaw is being adjusted.

Q -WhatIclaim, is:

' ,While the accompanying, drawing illus trates what I believe tobe the preferred em 'bodiment of my invention; it is wise understood that.-the invention is not limited thereto but that various changes may be' made in the construction, arrangements and proportions of the parts without'departing from the scope of the invention asdefined in the appended claim.

As a new article] of "Copies of this patent may be obtained; for

uard so that the movable jaw d Witnesses 1 manufacture a wrench comprising a shank 'provided with a handle at one end and with a fixedj aw at its opposite end, said fixed jaw extending beyondiopposite sides. of the shank, a yoke V embracing the shank and abutting the in l ner end of the handle,' a portion of said yoke extending rea'rwardly from the shank,

brace bar secured to the heel end of the fixed jaw and to the extended portion 7 of the yoke, said brace bar being; substantially parallel to the shanktand in spaced relation thereto and free from the movable jaw,

,In testimony whereofl hereuntoaflix. my signature inthe presencegof two witnesses.

HARRY H. GARDNER;

7 JOHN A. JAMEs, M. R. BRENNAN.

Washington, D. C.

five c'entseaeh, by addressing the Commissioner of iatents.

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