US840496A - Wrench. - Google Patents

Description

unrrnn sj'r fijgj PATENT enrich. V

JOSEPH M. JUSTEN, OF TOLEDO. OHIO, assieivoe OE rwo-rir'rns To o'rro Aoeseacn, OE TOLEDO, OHIO.

WRENCH.

Ohio, have invented" a new and useful Wrench, of which the following is a specification.

This invention relates to a Wrench of that type in which the gripping element is of a pliable nature-such, for instance, as a strap-Soihat nickel-plated, brass, or other highly-polished pipes can be gripped without danger of being marredby the wrench.

The invention has for oneof its objects to provide a wrench of simple and substantial construction, composed of few parts, and inexpensive to manufacture.

Afurther object of the invention is to so arrange the parts of the wrench that a very powerful draft can be produced on the gri ping-strap, whereby a pipe can be firm y grippedwitho'ut danger of slipping.

ith these objects in view and others, as will appear as the nature of the invention is better understood, the invention comprises the various novel features of construction and arrangement of parts, which will be more fully described hereinafter, and set forth with particularity in the appended claims.

' In the accom anylng drawings, which. illustrate .one'of t e embodiments of the in. vention, Figure 1 is aside elevation of the;

wrench shown in the act of gripping a pi e, Fig.- 2 is a front view of the same. Fig. 3 i s a fragmentary side elevation of the wrench illustrating the operation thereof to produce draft on the gripping-strap.

Corresponding parts in the several figures ,are indi'c'ated throughout by similar characters of reference,

1 Referring to the drawings, 1 desigpat the handle or lever of the wrench, Whit is in the nature of a. straight bar having one end formed into .the jaw .2. The lever and jaw may be cast or forged in one piece or made separately, as desired, and the jaw 2 extends laterally at a slight angle to the len th of the handle. The gripping-face ,3 of t e jaw, is

, slightly concaved and: is provided with trans- 5 n versely-extending corrugations or serrations 4. Adjacent the inner end of the jaw 2 the same 'is provided with a transversely-extending open ng 5, in which the rectangular link Specification of Letters Patent.- Application filed 0mm 20,1906. Serial No. 339.368.

"two different points? or shackle 6 is ivoted.

so that the link will-be n1ai11tai1ied. On one Patented Jan. 8, 1907, I

The length oftlie link is considera ly less than that of the jaw,

side of the latter and be prevented from" swinging from one side to the other overthe free end of the jaw. Attached to the outer end of the link is the flexible gripping mem her or strap 7, which may be of any suitable; I111ttGI1itl-Sll6l1, for instance, as a stout tape of woven fabric, The strap is attached to the link by passing'one end t ing of the latter and, then stitching or riveting rough the openthe end of the strap to the body of the same,

thus'forming an eye 8. To prevent wear of the strap at the eye, the latter-is provided with a sleeye 9, loosely mounted'oii the link 6. strap and jaw are of approzjrimately the same width, and the opening of the linkdiswidc" enough to permit the strap to be passed freely through the same. The arrangement of the jaw and link is such that the link is disposed at an an le to a line passing longitudinally throug 1 the handle 1, and the said an le is opposite tothe angle formed-between t is gripping-face 3 of the jaw and the longitudinal center line of the handle. In gri ping a pipe, therefore, the link 6 and face 3 of the jaw are disposed in tangential relation to the pipe at For this reason the pull on the link 6 will be directly in line with the length thereof and the strap will en age almost completely around. the pipe, as will be understood from Fig. 1 of the drawings. The side of the jaw 2 contiguous with the inner end of the corrugated face 3 is fiat, aseat 10,

to the pipe, the pipe will be in the relative dotted-line position, as indicated in Fig. 3. The ipe and strap will be disposed against the flat surface 10 of the point a. The handle 1 is then manipulated so that the point of contact between the strap and jaw will gradually move alon the fiat wall 10 to the corrugated face 3. hile the point of contact is thus changing, a considerable draft is produced on the strap by reason of the change of leverage. This change in the leverage. will be apparent by the comparison of the broken lines a l) and c (I, Fig. 3. By further manipulating the lever the strap is drawn tighter and tighter. By reason of the concavity of the corrugated face of the jaw 2 ;a relatively large area of. contact is provided between the jaw and strap, so that sli ing is eflectively prevented.

' onrthe fore oing description, taken in connection with the accompanying drawings, the advantages of the construction and of the method of operation, it is believed, will be readily understood by those skilled in the art to which the invention appertains, so

that further description is deemed unneces- What is claimed is- 1 1. A pipe-wrench com rising a handle, a jaw connected therewit 1 having a corruated gripping-face which is concaved in its l ongitudinal dimension and. disposed with its length at an angle to the handle, a link pivoted on the handle, and a strap attached to the link and adaptedto be gripped around I the pipe by'the said gripping-face.

2. pipe 'wrench comprising a handle, a

faces of the jaw, an

jaw connected therewith having an inclined and concaved gri ping-face disposed at an angle to the lengt ,1 of the handle, a link pivoted on the jaw and arranged to extend at an angle to the length of the handle and in the direction opposite to the said face when grip--' jaw connected therewith raving a flat face at one 'end and a contignons concaved face provided with eorru ations, a'link pivoted to the jaw at one side 0' the flat pontion of the latter and disposed with its free end on the side of the jaw having the gripping-face, a strap connected to the freeendof the link and arranged to be gripped b the flat and concaved a sleeve on the link around which the strap extends.

In testimony'that I-clai'm the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

JGSEPH M. JUSTEN. Witnesses:

M. O. FOGARTY, JOHN (J. YELKER

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