US1075945A - Wrench. - Google Patents

Description

J. A. SGHLEHR.

WRENCH.

APPLICATION FILED JAN.13,1913.

1,075,95. Patented 0015.14, 1913.

mil 4 m I 'UNTTE SATS arnr enrich WRENCH.

Specification of Letters Patent.

Patented Got. 1%, 1913.

Application filed January 13, 1913. Serial No. 741,814.

To all whom it may concern Be it known that I, JOSEPH ANTHONY SCHLEI-IR, a citizen of the United States, residing at Chicago, in the county oftcook and State of Illinois, have invented certain new and useful Improvements in Wrenches; 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.

This invention relates to tools, and more especially to wrenches, and the object of the same is to produce an extremely simple and yet effective three-piece wrench whose movable jaw is adjusted by the rotation of a nut and preferably so constructed that it cants with respect to the fixed jaw in order that the device may be used as a pipe wrench. This and other objects are accomplished by constructing the tool in the manner hereinafter more fully described and claimed, and as shown in the drawings wherein Figure l is a side elevation of this wrench complete, showing its jaws closed upon a pipe. Fig. 2 is a similar elevation excepting that the outer jaw and its shank are in section and are swung back to open position. Fig. 3 is a rear edge view of the handle member and fixed jaw. Figs. 4 and 5 are cross sections on the lines 4l and 5-5 respectively of Fig. 1.

In common with similar wrenches now on the market, this device possesses a fixed jaw F at the end of a handle H, a movable jaw M having a shank S, the face of both jaws being by preference roughened or toothed as shown at B when the wrench is to be used for turning pipe or other round articles, and for adjusting one jaw with respect to the other the shank S is provided with threads T engaged by a nut N. These parts are by preference entirely of metal and their detailed construction and proportions are immaterial excepting as described below.

The shank S of the movable jaw is by preference made tubular, and is slitted along one side from the head or jaw M to the opposite extreme thereof as indicated by the numeral 1. The outer end of the handle member, or that portion which serves as the shank of the fixed jaw F, is flattened as indicated by the numeral 2 and is provided along its rear edge with lateral ribs 3 proecting to both sides of the flattened portion and producing in effect a T-shaped bead along the edge of the handle which engages the slit 1 in the shank S as seen in Fig. 5. These ribs 3 are continued outward to a deep notch 4 which is cut into the rear edge of the member H at a suitable point to receive the nut N as seen in Fig. 2. Projecting from the opposite sides of the flattened portion 2 of the shank forming an integral part of the stationary jaw F and located opposite the latter are lugs 5 which are rounded on their inner faces, said lugs being in alinement with the ribs 3, thereby providing a fulcrum for the tubular shank which forms a part of the movable jaw.

To assemble the parts of this wrench, the nut N is placed within the notch 4 and the inner end of the tubular shank S is passed inward over the ribs 5 until its external threads T engage the internal threads within the nut; the latter is then rotated in the proper direction to draw this threaded shank inward, and its inner end is passed along down over the ribs 3 as indicated in Fig. 2 its slit 1 meanwhile sliding astride the flattened portion 2 of the handle H. The bore of the shank S is sufficiently large to permit its inner end some movement toward and from the other member H, the rounded inner faces of the ribs 5 rocking against the inner wall of the shank near the outer end of the latter and at opposite sides of its slit. However, it is quite within the spirit of my invention to shape the ribs 3 and 5 so that they will rather closely fit the bore of the shank S, in which event the canting of the two members with respect to each other would be done away with and the tool would become a monkey-Wrench. l-Vhen they do cant as shown in the drawings, the tool may be used as a pipe wrench as indicated in Fig. l, the teeth R assisting.

What is claimed as new is:

A Wrench comprising a movable jaw having a tubular shank exteriorly screw threaded and longitudinally slotted along its in ner side, the interior of the shank being of cylindrical shape and its lower end being open, a fixed jaw having a flattened shank terminating in a handle, the flattened portion of the shank having a deep notch cut in its rear edge, opposite laterally projecting straight ribs formed on the rear edge of the lower portion of the flattened shank and adapted to have lateral movement within the hollow portion of the shank of the movable jaw, a nut rotatably mounted in said notch and provided With internal threads for engagement With the threads on the tubular shank of the movable jaw and lugs arranged at the rear of the fixed jaw and projecting from the opposite sides of the flattened shank said lugs being in elinement with said ribs and having their inner 10 faces rounded to form a fulcrum for the tu- Copies ofthis patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' DGSSGS.

JOSEPH ANTHONY SCHLEHR.

Witnesses:

JOsEPI-I H. MUHLKE, BEN PAYNE.

Washington, D. G.

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