US597104A - Baxter m - Google Patents

Description

(No Model.)

B. M. DAVIDSON WRENCH.

No. 597,104. Patented Jan. 11,1898.

VV/TN/ZSSES INVENTOR UNITED STATES PATENT BAXTER M. DAVIDSON, OF IVASHINGTON, DISTRICT OF COLUMBIA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 597,104, dated January 11, 1898.

Application filed February 16, 1897. Serial No. 628,664.. (No model.)

To (tZZ whom it may concern:

Be it known that I, BAXTER lll. DAVIDSON, a citizen of the United States, residing at YVashin gton, in the District of Oolumbia,have invented certain. new and useful Improve ments in Monkeyrenches and I do hereby declare the following to be afull, clear, and ex act description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention provides a sliding-jaw nutwrench possessing the special advantage of having the rectangular opening which receives the nut located at the end of the implement in contradistinction to locating it on the side, as commonly practiced in wrenches of this particular style.

The peculiar construction of my improved wrench presents an independent shank for the sliding jaw, the latter being pivoted at the outer end of a lever fulcrumed to the handle of the rigid jaw, both handles extending substantially at right angles with the movement of the jaw or directly on a line with the nutopening, the lever having an eccentric or cam which engages an adjustable stop on the stationary handle.

lVith the above ends in view the invention consists in the novel features of construction and in the combination of parts, as described in the following specification and particularly set forth in the claims.

In the accompanying drawings, forming part of this specification, Figure 1 is a side elevation of a nut-wrench constructed in accordance with myinvention and Fig. 2 is an elevation, looking at the opposite side of the wrench.

Referring to the drawings by numerals, l designates the stationary handle of the wrench, which has formed integral therewith the rigid jaw 2, the said handle extending from the jaw at a slight angle therefrom and is preferably curved, as shown. From the rigid jaw 2 extends a rectangular projection 3, forming the shank upon which the movable j awe slides, the said movable jaw having a rectangular opening corresponding in shape with the cross-section of the shank. This movable jaw has a projecting lug or pin 5 extending from one side thereof, by which an operatinglever 6 is connected to said movable jaw and I arranged to slide or adjust the same upon the shank, as hereinafter more fully described.

The handle 1 of the implement is provided at an intermediate point with opposite projections, forming increased bearing-surfaces for the lever 6, said lever having corresponding projections, and both parts at this point being provided with transverse apertures through whichapivot or hearing pin 7 passes, the opening by which the lever is connected to the lug or pin on the movable j aw preventing the parts binding when the lever is thrown. It will be noted that when the jaws are brought together the handle portion of the parts 6 and l are together or lie one upon the other, and when the movable jaw is separated from the stationary jaw the said handles are separated according to the separation of said jaws, thereby providing a larger handle for a better manipulation of the implement.

In order to adjust or set the movable jaw with relation to the stationary jaw, the handle 1 is provided with a screw-threaded projection 8, upon which is mounted a nut or disk 9, having a threaded opening to engage said threaded projection, and in connection therewith the lever G is provided with an eccentric or cam face 10, which engages the nut or disk as the said lever is moved upon its pivot. By this engagement the nut can be adjusted to and from the stationary jaw to regulate the throw of the lever, and consequently determine the extent of the opening for the nut. The outer end of the screw or threaded projection 8 is preferably upset or headed to retain the disk or not in positive engagement therewith.

The particular construction of the wrench herein shown and described provides a very eflicient implement, and one that can be employed where the ordinary nut-wrench would be ineifective or useless.

It will be observed that a wrench constructed in accordance with what is contained herein will also possess the advantage of being strong and durable, as well as affording an implement capable of being used as ordinary pliers in case of an emergency.

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

1. In a wrench, the combination with the stationary jaw and projecting handle thereof, of a shank extending from the jaw at an angle with the handle, a movable jaw in sliding engagement with the shank, and a lever pivoted to the handle and connected to the movable jaw; together with a screw, and an adj Listingnut carried by the stationary handle to engage the lever, substantially as shown and described.

2. In a wrench, the combination with the stationary jaw and handle, of ashank extend ing from the stationary jaw at an angle with the handle, a movable jaw in sliding engagement with the shank to and froin the stationary jaw, and a lever pivoted to the shank and connected to the movable jaw so that the handles will be together or lie one upon the other when the jaws are in contact with each other; together with means for adjusting the throw of the lever, substantially as shown and described.

3. In a wrench, the combination with the stationary jaw having a handle and a shank. of a movable jaw in sliding engagement with the'shank and provided with a pin or projection, a lever pivoted to the handle and having an opening engaging the pin or projection on the movable jaw, said lever having an eccentric or cam surface located to one side or 7 its pivot; together with a threaded projection on the handle of the stationary jaw,'and a nut or disk engaging the threaded projection to contact with the eccentric or cam surface of the lever, substantially as and for the purpose set forth, l

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

BAXTER M. DAVIDSON. Witnesses:

'EDWD. B. Fox,

GEO. E. TERRY.

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