US1394939A - Wrench - Google Patents

Description

H. T. ROBERTS.

WRENCH.

APPLICATION FILED. FEB-7,1920.

1,394,939, Patented Oct. 25, 1921.

UNITED STATES HENRY T. ROBERTS, OF NEW YORK, N. Y.

WRENCH.

Original application filed May 21, 1919, Serial No. 298,612.

T 0 all whom it may concern Be it known that I, HENRY T. ROBERTS, acitizen of the United States, residing at 35 \Varren street, New York city, in the county of New York and State of New York, have invented a new and useful Improvement in renches, of which the following is a specifica-tion.

My object is to provide a novel, simple and inexpensive construction of wrench of the flat-sided type, the parts of which cannot become accidentally disconnected. the wrench of this application being disclosed in my pending application for United States Patent Serial No. 298,612, filed May 21st, 1919, and of which the present application is a division.

Referring to the accompanying draw- Figure 1 is a view in side elevation of a wrench constructed in accordance with my invention. Fig. 2 is a similar view of the two parts forming the handle-portion and stationary jaw of the wrench, before being united. Fig. 3 is a perspective View of the sliding jaw of the wrench; and Fig. 1, a similar view of the nut employed for shifting the sliding jaw along the shank of the wrench, Figs. 3 and 4' being shown slightly enlarged.

I prefer to form the wrench in accordance -with the preferred embodiment of my invention, by providing the shank portion formed of a flat bar of suitable metal, as for example steel, of uniform width, on which I cut a thread at one end, the threads being at opposite edges of the bar, as indicated at 6. The part thus provided forms the handle portion of the wrench and is suitably shaped to serve this purpose. The stationary jaw of the wrench, this jaw being represented at 7, is formed of a piece of flat metal, such as steel, preferably having a neck portion 8 at which this jaw is secured in endwiseabutting relation to the threaded end of the handle portion 5 as shown, as by electrically welding these parts together. The sliding jaw of the wrench is represented at 9 and is preferably formed with a bifurcated portion presenting arms 10 spaced apart and apertured as represented at 11, at which apertures the jaw surrounds the threaded part 6 of the handle bar 5 and is movable along the latter, the arms 10 presenting n opening Specification of Letters Patent.

Patented Oct. 25, 1921.

Divided and this application filed February Serial No. 357,050.

12 therebetween in which a. nut 13 screwing upon the threads 6, is located, this nut servmg as a means of adjustin the sliding jaw 9 along the handle-portion 5 toward and away from the stationary jaw 7.

In the formation of the wrench the sliding aw 9 with the nut 13 positioned in the openmg 12, is applied to the threaded end of the handle-portion 5, the jaw 9 and nut 13 to surround this portion and the nut 13 to en gage the threads 6 thereof, and the piece of metal forming the stationary jaw 7 then welded in place against the extremity of the threaded end of the bar-portion 5, as shown in Fig. 1'.

The portion of the metal of the bar 5 at the end of its thread 6, this portion being indicated at 14, thus forms a stop which prevents the nut 13 from unscrewing from the bar 5 at this end of the latter, and the jaw 7 forms a stop at the other end of the wrench for preventing the nut from unscrewing from the bar at this end thereof, the parts of the wrench thus being prevented from becoming disconnected even when roughly handled.

By providing the jaw 9 as shown with one side open between the arm-portions 10, it may be readily made by forging it to shape and then punching out, by means of the common punch-press, the openings for receiving the bar-portion 5, as distinguished from requiring drilling and machining to form the openings through the jaw 9 and thus this part of the wrench may be constructed very economically.

While I have illustrated and described a particular construction of wrench, I do not wish to be understood as intending to limit it thereto as the same may be variously modified and altered without departing from the spirit of my invention.

What I claim as new and desire to secure by Letters Patent is:

A wrench formed of a flat bar of metal with a thread cut on one end at. opposite edges, the end thereof opposite that containinc" said threads forming a handle-portion presenting a stop-surface at the end of said thread, a jaw surrounding said bar and shiftable thereon lengthwise of the latter and held against rotation thereon by engagement with said bar, a nut surrounding said bar and engaging said thread, and engaging said jaw and operating When rotated to shift said jaw along said bar, and a stationary jaw on the other end of said bar formed of a piece of metal of substantially the same thickness as said bar, connected with the outer threaded end of said bar to oppose said movable jaw, said stop-surface limiting the movement of said nut along said bar in one direction the part of the Wrench beyond said threaded portion at the opposite end of the Wrench operating to limit the movement of said nut along said bar in the opposite direction.

HENRY T. ROBERTS.

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