US554991A - Wrench - Google Patents

Description

(N'oModeL) L. P. DAVIDSON. WRENCH.

Patented Feb. 18, 1896.

WITNESSES. -/IVVENTO ATTORNEYS.

- UNITED STATES ATENT OFFICE.

LEWVIS PETTY DAVIDSON, OF DENVER, COLORADO, ASSIGNOR TO HIMSELF, AND EDWARD BARNES, OF PLEASANT HILL, NEBRASKA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 554,991, dated February 18, 1896.

Application filed June 21,1895. Serial No. 553,577. (No model.)

To all whom it may concern.-

Be it known that I, LEwIs PETTY DAVID- SON, of Denver, in the county of Arapahoe and State of Colorado, have invented a new and useful Improvement in WVrenches, of which the following is a full, clear, and exact description.

My invention relates to an improvement in wrenches, and it has for its object to construct a wrench which will be exceedingly simple, durable and economic in its construction, and whereby the movable jaw may be locked or released at any point in its travel on the shank by a slight movement of the thumb while the wrench is being held in the hand and another object of the invention is to construct a wrench embodying but few parts, any of which may be duplicated and none of them being liable to disarrangement.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of the improved wrench. Fig. 2 is a horizontal section taken substantially on the line 2 2 of Fig. 1. Fig. 3 is a similar section on the line 3 3 of Fig. 1, and Fig. 4 is also a horizontal section taken on the line 4: 4. of Fig. 1.

In carrying out the invention the shankA of the wrench is provided with the usual fixed jaw 10, and the said shank is made to enter a handle B, the said handle being made in two sections b and b, the section I) being the receiving-section of the shank, having a suitable slot 11 made therein, as shown in Figs. 3 and at, while the section b may be termed a cover-section, and these two sections are connected by screws 12 or their equivalents. The handle is preferably made much wider at the top than at any other portion in its length, being shaped at its lower end in such manner as to be conveniently grasped by the hand.

A yoke 13 is fitted to the upper or outer portion of the handle, having an opening through which the shank passes, and the cap is usually of the same contour and size as the wider end of the handle. The yoke 13 forms an important part of my construction and is provided so that the sectional handle will not have to bear the strain of moving parts, which would tend to spread the sections. It will also be seen that the shoulder a of the shank A bears upon the yoke and holds the same firmly against the ends of the handle-sections,

and since the shank is in turn held by the bolts 12 it will be seen that the parts are made very secure.

The wider end of the handle, at what may be termed its front, has a vertical socket 14 made therein, preferably circular in crosssection, and this socket is met by a horizontal recess 15 made in the handle, and is of angular shape, as shown in Fig. 3.

The movable jaw 16 is provided with the usual sleeve 17, the sleeve and jaw being fitted to slide on the shank A between the handle-cap and the fixed jaw 10. The adjustment of the movable jaw is accomplished through the medium of a slotted or mutilated 7 5 spondingly-threaded bore 20, made in the 8 sleeve of the adjustable jaw, as illustrated in Fig. 2. A thumb-piece 21 is secured to the mutilated screw, being passed through the recess 15 of the handle, as is also shown in Figs. 1 and 3.. Thus it will be observed that 0 upon turning the screw so that its threads will register with the plain surfaces of the bore 20 the adjustable jaw may be moved on the shank A to any required position relative to the fixed jaw, and when the position has 95 been determined by simply turning the thumb-piece 21, which may be readily done while the wrench is grasped in the hand, the threaded surfaces of the screw 18 will be made to coincide with the threaded portions of the loo bore 20 in the adjustable jaw, thus holding the said jaw stationary, and it is evident that In the construction of this no matter in what position the adjustable jaw may be placed this locking action maybe accurately, conveniently, and almost instantly accomplished.

By means of the yoke 13 the screw 18 and thumb-piece 21 may be operated freely and without danger of forcing the sections of the handle apart, it being thus seen that the invention is particularly adapted to that class of wrenches in which the handles are of two longitudinal parts, the threaded shaft having a bearing between the same.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In awrench, the combination of a shank, a handle, the same being formed of two sections jointly embracing" the shank, a movable jaw sliding on the shank, a revoluble screw connected to the jaw and to the handle, and a yoke at the end of the handle, said yoke embracing the shank and the screw, substantially as described.

2. In awrench, the combination of ashank, a handle having sections jointly embracing the shank, a sliding j aw movable on the shank, a yoke lying against the end of the handle which is adjacentto the sliding jaw and held thereto by a shoulder on the shank, a screw connected with the sliding jaw and having bearings in the yoke, and a thumb-picce connected to the screw and movable in a recess in the handle, substantially as described.

LEWIS PETTY DAVIDSON.

\Vitnesses:

II. 0. llnnnrucns, CHAS. E. HILL.

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