US746712A - Monkey-wrench. - Google Patents

Description

No. 746.712. PATENTEDDEC'. 15. 1903.

S. E. LANDIS.

MONKEY WRENCH.

APPLICATION FILEi') JUNE 20, 1903.

H0 KODEL.

Patented December 15, 1 903.

PAT NT OFFICE.

SAMUEL EICHMAN LANDIS, OF CUMBERLAND, MARYLAND.

MONKEY-WRENCH.

SPECIFICATION forming part of Letters Patent No. 746,712, dated December 15, 1903.

Application filed June 20, 1903. Serial No. 162.316. (No mod l.)

.To aZZ whom it may concern:

Be it known that I, SAMUEL EICHMAN LAN- DIS, a citizen of the United States, residing at Cumberland, in the county of Allegany and State of Maryland, have invented certain new and useful Improvements in Monkey-Wrenches, of which the following is a specification. I

This invention relates to wrenches, and more particularly to that class known as monkey-wrenches.

The object of the invention is to produce a wrench of this general character, in which the movable jaw may be approximately adjusted upon the shank independently of the usual screw-threaded adjusting devices and subsequently may be given a finer adjustment by means of such coacting threaded members to secure that exact positioning of the fixed and movable jaws relatively to each other necessary in a perfectly operated wrench of this class.

Furthermore, the object of the invention is to produce a wrench having a movable jaw that can be easily and quickly adjusted to the dilferent positions required.

Finally, the object of the invention is to produce a wrench of the character noted which will possess advantages in points of simplicity, ease of manipulation, combined with strength and durability.

With the foregoing and other objects in view the invention consists in thedetails of construction and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail reference will behad to the accompanying drawings, forming part of this specification,'wherein like characters denote corresponding parts in both views, and in which- Figure l is a view in elevation of a wrench embodying the invention. Fig.2 is a similar view, partly in section, showing the lever and the thumb-nut carried by the lever.

In the drawings, A denotes the shank of an ordinary monkey-wrench which is provided with transversely-arranged teeth B upon the inner edge or Working face of the shank, and a fixed or stationary jaw is formed integral therewith at one end and at the opposite end a handle is suitably secured. A movable jaw E is freely reciprocatory along said shank and provided with a recess in its upper part in which a lever F is pivotally secured by means of a screw G threaded in the side of the movable jaw and through an aperture in the end of the lever. The lever is also provided with screw-thread at one end, upon which a thumb-nut H is threaded, said thumb-nut having itsperipheral edge adapted to seat. between the teeth of the shank, and to prevent the accidental disengagement of the thumbnut and lever I provide a small screw 1, which is threaded in the end of the lever. A spring J is secured in the recess of the movable jaw and so that the tension of the spring will be exerted against the lever, which will prevent the thumb-nut from becoming accidentally disengaged from the teeth of the rack without the aid of the operator and at the same time will hold the thumb-nut in rigid engagement with the teeth of the rack.

It will be apparent that by the described construction of the fixed and movable members of the wrench and their operating and adjusting devices relatively to one another a very simple and compact tool is formed and one in which very great strength and durability are combined with extreme lightness; also, that-the fixed and movable jaws are capable of rapid and perfect adjustment relatively to each other, and that the necessity of. adjusting the movable jaw from end to end of the shank by the slow'process of rotating an adjusting-nut, as in the case of most tools of this class, is obviated, as the operator may lift the thumb-nut out of engagement with the teeth of the shank and manipulate the jaw according to any size not or article desired, and at the same time may give the same a finer adjustment by rotating the thumb-nut on the threaded end of the lever.

The construction, operation, and ad vantages it is thought will be understood from the foregoing description, it being noted that various changes may he made in the proportions and details of construction withoutdeparting from the scope of the invention.

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

In a wrench the-combination with a shank the thumb-nut in engagement with the teeth having a fixed jaw at one end and suitable of the shank. IO teeth formed on its inner edge,a movable jaw In testimony whereof I affix my signature having a recess in its upper portion, a lever in presence of two witnesses.

5 having an aperture at one end and provided SAMUEL EIOHMAN LANDIS.

with screw-thread at its opposite end pivoted Witnesses: in the recess, a thumb-nut carried by the le- W. M. DAVIS,

ver and spring-actuated means for holding G. E. METZ.

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