US577632A - Monkey-wrench - Google Patents

Description

(No Model.)V

C. E. THOMPSON. MONKEY WRENCH.

N0.`57'7,632. Patented Feb. 23, 1897.

IINTTED STATES PATENT OFFICE..

CHARLES E. THOMPSON, OF LEESBURG, VIRGINIA.

MONKEY-WRENCH.

SPECIFICATION forming part of Letters Patent No. 577,632, dated February 23, 1897. Application filed October Q, 1896. Serial No. 608,384. (No model.)

T0 all whom it may concern:

Be it known that I, CHARLES E. THOMPSON, a citizen of' the United States, residing at Leesburg, in the county of Loudoun and State of Virginia, have invented certain new and uselful Improvements in Monkey-Vrenches and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has relation to monkeywrenches, and more particularly to that class of sliding-jaw wrenches in which the handle is pivoted to the shank and capable of being fixed at a right angle thereto or parallel therewith at will; and the object is to provide a simple, cheap, and durable tool of this class.

To this end the novelty consists in the construction, combination, and arrangement of the same, as will be hereinafter more fully described, and particularly pointed out in the claims.

In the accompanying drawings the same reference-numerals indicate the same parts of the invention.

Figure l is a side elevation of my improved wrench with the handle set parallel with the shank. Fig. 2 is a similar view with the han dle set at a right angle to the shank, and Fig. 3 is a longitudinal section through the handle and yoke.

l represents the shank, 2 the integral stationary jaw, 3 the movable jaw sliding on the shank l, and 4: represents the yoke. A thumb-screw 5, journaled in the forward end of said yoke, engages the movable jaw 3, and by means of said thumb-screw 5 said movable jaw may be adjusted with reference to the fixed jaw in the usual manner.

The rear end of the yoke 4 is enlarged, as shown, and it is formed with a rectangular recess 7 between its integral ears 8 9, and between these ears is pivoted the tenon end l0 of a rod l2 by means of a rivet 13.

14 represents a washer loosely mounted on said rod l2 contiguous to the tenon lO, and l5 is a longitudinal sleeve also mounted loosely on the rod 12, its inner end resting against the washer 14. The outer or free end of the rod l2 is screw-threaded, as shown, to receive a milled-rim nut 17, which bears against the outer end of the sleeve to force it inwardly, so that its inner end clamps the washer against one or the other of the plane faces I8 or 19 of the enlarged end of the yoke, so that when the handle is set at either angle, as shown in Fig. l or in Fig. 2, the nut and sleeve clamp the washer against the plane face of the yoke in a practically rigid manner, and when it is desirable to change the handle from one position to another it is only necessary to give the nut a few turns to the left, swing the handle around to the opposite position, and give the nut a few turns to the right to rigidly secure the handle in position.

2O represents the wooden hub on the sleeve, on which it freely revolves, and as it is .a trifle shorter than the length of the sleeve it is not clamped or bound by the nut when tightened to hold the handle in position.

The advantages of this form of wrench are obvious and need no further description.

Although I have specically described the construction and relative arrangement of the several elements of my invention, I do not desire to be confined to the same, as such changes or modifications may be made as clearly fall within the scope of my invention without departing from the spirit thereof.

Having thus fully described my invention, what I claim as new and useful, and desire to secure by Letters Patent, is-

l. A wrench comprising the shank l and the yoke 4 havin g integral parallel ears 8 and 9 formed with right-angularlydisposed plane faces 18 and 19, the rod l2 pivoted at one end between said ears, the washerle Vand sleevey l5, removably secured on said rod by means of the nut 17, substantially as shown and described.

` 2. A wrench comprising the shank l and yoke 4. having integral parallel ears 8 and 9, with oppositely-disposed Vplane faces I8 and 19, the rod l2 pivoted at one end between said ears, and having its opposite or free end pro- 9 vided with screw-threads, and the washer 14, sleeve 15, and milled-rim nut 17 mounted on said rod, substantially as and for the purpose set forth. V

In testimony whereof I hereunto affix my signature in presence of two witnesses.

CHARLES E. TnoMPsoN.

Witnesses:

SAME. A. DRURY, A. B. SUIT.

IOO

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