US1355733A

US1355733A - Wrench

Info

Publication number: US1355733A
Application number: US277530A
Authority: US
Inventors: Henry M Cheek
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-02-17
Filing date: 1919-02-17
Publication date: 1920-10-12
Anticipated expiration: 1937-10-12

Description

H. M. CHEEK.

WRENCH.

I APPLICATION FILED FEB. 17, 1919.

Patented 0ct.12,1 920.

m m M HENRY M. CHEEK, or FERNDALE, ARKANSAS.

PATENT OFFICE.

WRENCH.

T 0 all whom it may concern Be it known that I, HENRY M. GHEEK, a citizen of the United States, residing at F erndale, in the county of Pulaski and State of Arkansas, have invented a new and useful Wrench, of which the following is a specification.

The device formingthe subject matter of this invention is a wrench, and the invention aims to provide novel means for holding the movable jaw of the wrench releasably in position so that a quick shift may be made, to adjust the wrench to articles of different sizes. 1

It is within. the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

With the above and other objects in view,

which will appear as the description pro ceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the drawings Figure 1 shows in longitudinal section, a wrench constructed in accordance with the invention, parts being broken away; Fig. 2 is an elevation wherein the wrench is viewed edgewise, part being omitted; Fig.

3 is a section on the line 33 of Fig. 1.

The wrench shown in Figs. 1, 2 and 3, includes a handle 1 broadened to form a head 2 carrying a fixed jaw 8. The head 2 is supplied with a transverse guide way 4 which is cruciform in cross section. In the head 2, an undercut chamber 5 is fashioned, the same communicating with the guide way 4. The chamber 5 has a rounded end 6. A passage 7 leads from the chamber 5 through one edge of the head 2 and defines a shoulder 8 provided with a notch or seat 9. j

A bar .10 of cruciform cross section, is mounted to reciprocate in the guide way 4, transversely of the wrench, and carries a movable jaw 11, adapted to cooperate with the fixed jaw 3'. On the inner edge of the bar 10 there is a rack 12.

A pawl 14 is disposed ,in the chamber 5 and includes a rounded end 15 abutting against the rounded end 6 of the chamber Application filed. February 17, 1919. Serial No. 277,530.

SP fi n it 'r nt Patented Oct. 12, 1920.

5.", The pawl 14 embodies a rack 16 adapted tocooperate with the rack 12 on the bar portion 10 of the movable jaw. The pawl 14 has a reduced arm 17 located in the passage and terminating in an angular finger piece 18 which is accessible from a point exterior to the head 2 of the wrench. At the point of juncture between the arm 17 and the body portion of the pawl 14, a notch or seat 19 is formed. The numeral 20 denotes a V- shaped spring, one arm of which rests on the head 2 at the bottom of the chamber 5, the end of the said arm being received in the notch or seat 9. The end of the other arm of the spring 20" is received in the notch or seat 19 of the pawl 14.

When the spring 20 is expanded, the spring tends to maintain the rack 16 of the pawl 14 engaged with the rack 12 of the jaw-bar 10, and, thus, the jaw 11 may belocated at any desired distance with respect to the fixed jaw 3. In order to shift the jaw 11, the finger piece 18 is pressed toward the free end of the handle 1, thereby compressing the spring 20 and moving the rack 16 of the pawl out of engagement with the rack 12' of the movable jaw. Attention is directed tothe fact that, preferably, the oawl 14 is not mounted on a pivot element. The V-shaped spring 20 exercises a double function, in that it constitutes a means for maintaining the rack 16 and 12 engaged, and constitutes, also, a means whereby the awl 14 is maintained seated in the chamber 5.

In order to assemble the wrench, the pawl 14 is slid into the chamber '5 whereupon the lower arm of the spring 20 will click or snap into the notch or seat 9. The bar portion 10 of the movable jaw may then be slid into the guide way 4 transversely of the wrench.

Having thus described the invention, what is claimed is A wrench comprising a head carrying a fixed jaw and provided with a transverse guide-way, and with a chamber communicating with the guide-way, the chamber having a rounded end, said end portion of the chamber being widest at its mouth, there being ably for rocking movement in the rounded end of the chamber, the pawl being provided With a projectionlocated in thepassage and accessible from exterior of the Wrench, there being seat in the edge of the pawl, adjacent to the projection; .a V-shaped spring in the chamber, one end of the spring being en- "gaged with the shoulder, the other end of the spring'being engaged with the seat, the

spring constituting means for maintaining the pawl interen-gaged with the rack, and

acting expansively to maintain the rounded end of the pawl seated in the rounded end of the chamber. 7 Q

In testimony that I claim the foregoing 15 as my own I have hereto a'iiixed my signature in the presence of two Witnesses.

HENRY M. GHEEK.

Witnesses J. W. DIEHL, E. M. FAGAN.