US1592733A - Wrench - Google Patents

Description

- E. GRAF ET AL v WRENCH Filed July 19, 1924 137 1233 67%; ji -milder $321 ATTORNEY WITNESS:

Patented July 13, 1926.

UNITED STATES ERNEST GRAF AND ALEXANDER GRAF, OF MONROE, OREGON.

WRENCH.

5 Application filed July 19, 1924.

This invention relates to improvements in wrenches and has for an object the provision of a wrench which is capable of a rapid initial adjustment and an accurate subsequent adjustment so that it may be quickly and accurately adjusted for use.

To this end, the invention provides a wrench which includes a handle or shank enscrew having novel means for detachably holding the same in engaged position whereby the screw may be disengaged to permit of a rapid adjustment or the wrench and afterward engaged to permit of an accurate adjustment, the means for holding the screw in engaged position also serving to provide means whereby the screw may be operated to adjust the wrench.

With the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claim.

In the drawings Figure 1 is an elevation of a wrench con structed in accordance with the invention, the adjusting screw being shown in disengaged position by dotted lines.

Figure 2 is an enlarged section on the line 22 of Figure 1.

Figure 3 is an enlarged fragmentary section illustrating the connection between the screw and the slidable or movable jaw.

Figure 4 is a detail perspective View of the combined swiveled and pivoted connecting member.

Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the reference character indicates the shank of the wrench which provided at one end with a handle or grip 11 and at its opposite end with a stationary jaw 12, while mounted for sliding movement upon the shank 10 is a movable jaw 18.

The shank 10 is provided along one of its edges with teeth 14 which are adapted to be engaged by a screw 15, the latter being carried by the movable jaw 13. For this purpose, there is pivotally secured to the movable jaw as indicated at 16, a connecting member 17. This member is adapted to extend within a socket 18 provided in one end of the screw and to have a swiveled connection with the said member through the medium of pins 19. These pins extend Serial No. 727,002.

through the screw 15 and engage an annular groove 20 which extends around the adjacent end of the connecting member 17.

Extending from the opposite end of the screw 15 is a pin or rod 21. This pin or rod is adapted to be engaged by opposed spring lingers which are secured to spaced arms extending from the shank 10. The lingers 22 are provided with opposed arcuate seats 2% which receive the pin 21, while the arms extend from a band or collar which is secured around the shank 10 as indicated at 26.

It will be apparent from the foregoing description and accompanying drawings that the screw 15 may be moved to the position shown by the dotted lines in Figure 1 so as to permit of a rapid adjustment of the jaw 13. The screw may then be moved inward so as to engage the teeth lat, being held in engaged position by the spring fingers 22. The screw may then be rotated to obtain a subsequent accurate adjustment of the jaw.

In order to provide for the convenient manipulation of the screw 15-, the outer end of the pin 21 is provided with a knurled operating knob 27.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the ap pended claim.

Having described the invention what is claimed is A wrench comprising a shank having teeth along one edge, a body rigid with the shank, a body slidable upon the shank, an adjusting screw, a swivel and pivotal connectic-n between one end of the screw and the slidable body whereby said screw member may be moved into and out of engagement with the teeth of the shank, a pin extending from the opposite end of the screw, a collar embracingthe shank, spaced arms integral with and extending in parallel relation from the collar, opposed spring fingers carried by and located between the arms, said spring lingers having arcuate seats whereby the pin is yieldably engaged by-said fingers to hold the screw in engaged position. i

In testimony whereof we affix our signatures.

ERNEST GRAF. ALEXANDER GRAF.

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