US1748218A

US1748218A - Wrench

Info

Publication number: US1748218A
Application number: US307997A
Authority: US
Inventors: Gilbert H Groves
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-09-24
Filing date: 1928-09-24
Publication date: 1930-02-25
Anticipated expiration: 1947-02-25

Description

G. H. GROVES WRENCH Feb. 25, 1930.

Filed Sept. 24. 1928 Patented b. 25, 1930 UNITED, STATES GILBERT 'H. enovns, or PORTLAND, oaneon WRENCH Application filed September 24,1928. Seria1 I To.3i)7,997.

This invention relates generally to wrenches, and particularly to ratchet wrenches. i

, The main obj ectof this invention is to pro-' 5 vide a new form of ratchet wrench in which lost motion will be almost entirely eliminated. I

The second object is to construct a ratchet wrench which will be extremely easy to manufacture and unusually rugged in construction in proportion to the amount or" material employed in same.

.The third object is to provide a ratchet having a special means for enabling the operator to prevent reverse rotation thereof, and at the same time to :make the direction in which'the Wrench is'drivingeasily discernible' to the eye.

These, and other objects, will become more apparent from the specification following as illustrated in the accompanying drawing, in which: '2

portion broken'away to show the interior. Figure 2 is a side elevation of the wrench.

Figure 3 is a bottom view of the wrench showing the side opposite that shown in Figure 1. Y Figure .4: is a section taken along the line 4-4; in Figure 3. Figure 5 is a perspective View of the socket. Figure 6 is a perspectiveview of a roller. Figure 7 is a perspec tive view of a wrench head showing the manner of resisting reverse rotation. Figure 8 is a section taken along the line 8-8 in Figure 7. Similar numbers of reference refer to similar parts throughoutthe several views. 1 Referring in detail to the drawing, the wrench consists of a handle 10 at one end of which is formed a head 11 having a circular opening 12 formed therein.

- The faces 13 of the head 11 are straight and parallel to each'other. \Vithin the opening 12is placed the socket member which consists of a cylindrical body 14 having a square opening-15' and projecting arms 16, whose outer portions 17 are curved and bear within the. interior of the opening 12. Each of the'arms 16 is provided with one straight 9 side 18 which contains a hole 19 fora spring drive a nut 25.

20. The opposite side'21, of the arm 16 is somewhat rounded to improve the action of the wrench.

Between the straight sides 18 of each arm and the curvedside 21, of the next adjacent arm is placed a rolleri22 substantially the same width as the arms between which they lie. The arms 17 are substantially the same width as the head 11 andthe round ends of the body 14 project beyond the faces 13. On one projecting end of the body 14; is placed a washer 23 provided with a knurl 24: preferably in the form of arrows indicating the direction in which the wrench will On the opposite side of the wrench head and upon the other projecting end of the body 14: is placed a second washer 26 provided with arrows 27 pointing in the opposite direction than do the arrows 24, and, of course, indicating the manner in which the wrench will drive when reversed, so that the knurl 27 will be visible to the eye of the Figure 1 is a plan of the wrench w th a operator. The

washers

23 and 26 are held in position by means of the rivet 28, which also passes through the hole 29 in one of 5 the arms 16.

The operation of this wrench is, of course, similar to the ordinary ratchet wrenches, except in the important advantages which arise from its use, namely that there is no lost -motion and it is easily possible for the operator to tell at a glance the direction in which the wrench will drive, in addition to the fact that he will be able to resist any backward rotation by the mere pressure of his finger 30.

While in Figure 8 there is shown the application of the wrenchto a square nut, it will of course be understood that in ordinary practice it will be usedin connection with a square bar on whose head is placed a socket of the desired size, making the wrench adaptable to any size of nut. Also if a square turning bar is not employed, but a hexagonal one is used instead, the opening 15 would be 95 shaped accordingly. In some instances it might be desirable to provide a hinged handle instead of a rigid handle (as shown), or the handle itself may be slightly off-set, but these expedients are understood by those versed in the art of wrench making and are therefore not illustrated or described.

I am aware that many forms of ratchet wrenches have been constructed in the past; it is therefore not my intention to cover such devices broadly, but I do intend to cover all such forms and modifications thereof as fall fairly Within the appended claims;

I claim:

1. A ratchet Wrenchhaving a handle member provided With a cylindrical opening, a:

socket rotatably mounted Within said open ing having inclined faces formed around the periphery thereof, a Wedging roller mounted.

on each of said inclined faces provided With spring meansfornormally urglng same into a vvedging positiomthe ends ofsaid socketpro ecti'ng from the sides of the handle, and a Washer on each projecting end having 'a I knurled surface on. the outer side thereof indicating the driving direction of the Wrench.

'2. ratchet Wrench having a socket adapted to engage an object to be rotated, and having a disk mounted on each end of said Wrench provided with a knurled surface indicating the direction in which. said Wrench can rotate said. object.

GILBERT GROVES.