US592199A

US592199A - Half to charles e

Info

Publication number: US592199A
Authority: US
Publication date: 1897-10-19
Anticipated expiration: 1914-10-19

Description

(No Model.)

J. G. FLETCHER. WRENCH.

No. 692,199. Patented Oct. 19,1997.

J OS EPI-I G. FLETCHER, HARTFORD, CONNECTICUT, ASSIGNOR OF ONE HALF TO CHARLES E. WILLARD, OF SAME PLACE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 592,199, dated October 19, 1897.

Application filed December 21,1896. Serial No. 616,422. (No model.)

To all whom it may concern.-

Be it known that L'Josnrn G. FLETCHER,

of Hartford, in the county of Hartford and being so constructed as to readily grasp any size of hexagonal nutwithin the limitof the nut-socket in the wrench-body.

To this end my invention consists in the wrench and in the combination of its' parts, as hereinafter described, and moreparticularly recited in the claim.

Referring to the drawings, Figure 1 is a plan View of the wrench. Fig. 2 is a plan view of the wrench-body with the cover-plate removed and part out in section to show the construction. Fig. 3 is a detail edge View of the wrench. Fig. 4 is a detail View in crosssection through the wrench.

In the accompanying drawings the letter a denotes the body part of the wrench, which in shape is a somewhat thin oblong framework of metal with rounded ends. Along the cen-' ter of the frame a is a channel or socket, in which is located a movable jaw b, which has alimited lengthwise-sliding movement in thesocket, which it fits quite closely. This jaw 17 has a threaded stem 0, on which a nut dis fitted, the nut being large enough in diameter to extend beyond the walls of the j aw-socket into recesses or openings in the body part of the wrench or in its cover. The edges of this nut lie closely against the side walls of the opening which form shoulders to take the thrust of the jaw when its grasping-face is close upon a nut. V

In the form of my invention shown herein its particular feature is embodied in a double-ended wrench, and thej aw has two grasping-faces, the one which is appurtenant to the rectangular socket e and having an angular recess 0 in the grasping-face, while the face 0 0f the jaw at the end appurtenant to the other nut-socket f at the other end of the wrench-body has a flat face at right angles- 'to the path of movement of the jaw in its socket. In this form of the jaw it is made in two sections, the threaded shank of the one part being screwed into a socket in the other section and held firmly, as by means of a pin driven through the jaw into the shank. The nut dis first screwed upon the threaded shank c, and the jaw, with the nut, after the two sections of the jaw have been pinned together, is dropped into the socket, securing the coverplate gin place, which may be done by means of screws or rivets. p

The main feature of my invention resides in the nut-socket f havingthe side Walls 1 and 2 so arranged as to make with each other an angle of sixty degrees, thus conforming to two sides of a hexagonal nut. It is preferred to form this socket with one narrow face 3 at right angles to the path of movement of the sliding jaw 19 and located opposite to the grasping-face c of this jaw. These two

surfaces

9 and 3 are substantially parallel to each other. hen a hexagonal nut is located in the socket f, it is grasped on three sides of its center by grasping-faces equally disposed about that center. The faces 1 and 2 of the nut-socket and the grasping-face c are applied to the three alternate faces out of the six faces by which the edge of the hexagonal nut is bounded. This gives a very firm" hold upon the nut, and owing to the equal disposition of the grasping-faces about the center of the nut and of the bolt enables thenut to be screwed in place with great accuracy and without any danger of distorting the bolt or the threads.

I am, aware that wrenches of this general class and of the type illustrated in the rectangular socket at the right hand of the wrench shown in the accompanying drawings are not new, but my device is an improvement over such structures in theconstruction and location of the grasping-faces of the surface of the nut-socket adapted to grasp a hexago nal nut when combined with the sliding jaw with its flat grasping surface arranged as hereinbefore described. By means of my improvementa wrench of this kind can be used on hexagonal nuts of various sizes from the smallest size to one which just fits within the limits of the socket formed in the end of the Wrench.

The nut-socket for the hexagonal nuts is formed with a short surface in opposition to the fiat grasping end of the jaw in order to give the needed strength to the end of the wrench-body at this part. The ends of the wrench-body are rounded, so as to enable the wrench to be used on a nut which is located close to some projecting part of the machine or article near the place Where the nut is screwed upon a threaded bolt or projection.

I claim as my invention In combination in a pocket-wrench, a thin oblong body part having a lengthwise jawsocket opening into anut-soeket near one end of the body part, a nut-socket having the wall opposing the grasping-face of the jaw