US1455822A - Wrench - Google Patents

Description

May 22, 1923.

R. VOINOV WRENCH Filed May 25 1921 it ill;

RUDY VOINOV, OF

CLEVELAND, OHIO.

WRENCH.

Application filed May 25,

To all whom it may concern:

Be it known that I, RUDY Vomov, a citizen of the United States, and resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Wrenches, of which I hereby declare the following to be a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to wrenches and more particularly toan improved monkey wrench including a novel arrangement of gripping jaws whereby the wrench may be employed as an ordinary wrench with fiat gripping surfaces or as a pipe wrench with corrugated surfaces.

Other objects of the invention will appear upon consideration of the following detail description and accompanying drawings, wherein Figure 1, is a longitudinal section through a wrench constructed in accordance with my invention.

Figure 2, is a cross section taken on the line 22 of Fig. 1.

Figure 3, is a cross section taken on the line 33 of Fig. 1.

Referring to the drawing by numerals, the shank 1 is provided on one edge with a series of teeth 2 and has a jaw 3 fixed on the end of the shank which serves as the stationary jaw. Slidably mounted upon the shank 1 is the ferrule 4 having the movable jaw 5 attached thereto in such a manner that the movable jaw may be longitudinally adjusted on the shank. An adjusting nut 6 is mounted in the ferrule and is provided with helical teeth which engage the teeth 2 on the shank so that when the nut is turned the ferrule will be longitudinally adjusted in the manner well known in the art, so that the jaws may be opened and closed.

The jaw 5 flat on its engaging surface is provided with a large recess or socket 7 having re-versely inclined sides between whlch is mounted a wedge shaped gripping member 8 having serrations 9 on the engaging side which are adapted to engage any pipe or member placed between the jaws of the wrench when the same are opened. A substantially square opening 10 is extended transversely through the gripping member 8 and this opening receives the retaining member 11 which extends transversely across the central portion of therecess 7 1921. Serial 'NO. 472,603.

shown in Fig. 1, and through'the openmg 10 so that a limited movement oscillating and vertical is provided for the gripping member 8. Coil springs 12 are interposed between the bottom of the recess and the adjacent edge of the gripping member to normally urge the gripping member outwardly when the wrench is in use so that the serrations 9 will engage any pipe which is placed between the gripping jaws of the wrench, and the fiat side of the movable jaw surrounding the member 8, will be adapted to engage a flat surface in the manner of a monkey wrench. In this case the depressible member, 8, will remain perfectly flat and will not injure the surface of the work, which is important, when engaging the faces of hexagonal soft metal nuts, or other soft metal parts.

When the jaws are opened, the member, 8, will rise, and when an irregularly shaped bar or pipe is inserted between the jaws, the member, 8, only will engage that side of the same and will become tilted thereby, as shown in Fig. 4, and when the jaws close the member, 8, will be jammed against the inclined sides of the recess.

The end of the shank 1 opposite to the stationary jaw 3 is provided with a screw threaded shank 14 upon which the handle 15 is mounted, the handle being {hollow as clearly indicated in the drawing. A revolvable cap 16 is mounted on the free end of the handle and this cap is provided with an opening having communication with the interior of the handle. A screw driver including a shank 17 is mounted within the handle and is provided at one end with the screw driver blade 18 and at the opposite end with a disk 19 through which a guide pin 20 is passed, the latter being adapted to have its terminals longitudinally moved in grooves 21 provided on the interior of the handle as indicated in Fig. 3. A coil spring 22 is interposed between the end of the screw threaded stud 14 and the disk 19 to normally urge the screw driver outwardly when the spring is permitted to expand. A retaining pin 23, however, is provided to extend through the screw driver and through diametrically opposite openings in the handle 15 whereby the screw driver will be held in operative position when not in use. By removing the pin 28, the spring 22, will urge the screw driver outwardly sothat the end 18 will extend outwardly beyond the cap 16 throughthe opening therein, whereby the screw driver may be employed when desired.

Minor changes may be made in the details of construction without departing from the spirit of the invention or the scope of the claims hereunto appended.

What is claimed is 1. wrencln comprising a shank, having a laterally projecting stationary jaw at one end, a main opposed laterally [projecting jaw, movable on said shank towards and from said stationary jaw, and adapted to engage the same, said movable jaw rovided with a recess in its engaging race, having oppositely inclined sides, and a loose jaw member mounted in said recess, said loosejaw member being wedge-shaped and adapted to engagewith a rounded or irregularly shaped object, and said main movable jaw and stationary jaw member having flat surfaces adapted to engage with a laterally projecting stationaryjaw at one end, a main opposed laterally projecting jaw movable on said shank towards and from said stationary jaw, and adapted to engage the same, saidmovable aw provided with a recess 1n its engaglng face, havlng oppositely inclined sides, and a loose wedgerounding said recess, adapted to engage with fiat objects, said loose jaw provided with a transverse opening, and a transverse retaining bar passing through said opening, and into said movable main jaw member.

In testimony whereoflI hereunto set In hand this th day of April, 1921.

WM. M.'MONROE, CHAS. F. SIPE.

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