US63935A - James a - Google Patents

Description

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JAMES A. PARTRIDGE, OF LOWELL, MASSACHUSETTS, ASSIGN OR TOl HIMSELF .AND AE. D. WRIGHT, OF SAME PLAGE.

Letters Patent No. 63,935, dated April 16, 1867.

IMPROVEMENT in warmers.

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To ALL WHOM IT MAY CONOERN:

Be it known that I, JAMES A. Pnnrnrnca, of Lowell, in the county of Middlesex, and State of Massachu-v setts, have invented certain new and useful Improvements in Wrenches, of which the following is afull, clear,

and exact description, reference beingvhad to the accompanying drawings, making part of this specification, inI

which-- Figure 1 is a central longitudinal section. g

Figure 2, a transverse section on the line A B of fig. 1.

Figure 3 is a side elevation, and

Figure 4 a central longitudinal section, showing the operating end of the liberating lever depressed, and the segmentary nut disengaged from the adjusting-screw. g

This invention consists, first, in the use and application to an ordinary slide-wrench of a liberatingrlever, A, arranged in the movable jaw B, when said lever is provided with a segmental nut consisting of screw-threads `e formed in or upon the inner or-semcrcular side of that end Z1 of' the lever which comes in contact with the adjusting-screw G, said lever being pivoted at a, and the segmental nut held in contact with the adjustingscrew, by means of a spiral or other sp1-ing, g, placed in a socket in the movable jaw, or between said jaw and Vthe end 0l of the lever. My invention also consists in forming or providing a shoulder, el, on )the inner portion of the movable jaw, and a corresponding shoulder, e2, on the lever, so that when the segmental nut engages with the adjusting-screw, the said shoulders shall come together, and take the strain off the pivot a, whenthe Wrench is being used to turna. nut or hold a bolt, or for other purposes, thereby preventing the pivot being broken and the wrench'disabled. And my invention consists in the deep-cut surface'of quadrilateral figures, on the periphery of the head C of the adjusting-screwthe object of which isto prevent the surface wearing so smooth by constant use as to render it difficult to turn the screwby friction applied to the head. Any small adjustment of my .improved wrench is made by turning the screw, as in the ordinary slide-wrench, which has nc liberating lever; ibut to adjust the movablejaw quickly to fit any object within the capacity ofthe wrench, it is only necessary to 4press on the end d of the liberating lever, when the segmental nut at the endrbof said lever will be thrown out of contact with the screw G, as clearly shown in iig. 4, and the movable jaw may be slid along on the smooth shank D of the wrench to any desired place; releasing the pressure on the end d of the lever, allows the spring g to throw the segmental nut into contact with the screw, and hold the movable jaw against one side of the object grasped by the two jaws ofthe wrench.

Having fully described my invention, what I claim as new, and desire to secure hy Letters Patent, is 1. The liberating lever A, applied to the movable jaw of a slide-wrench, when said lever has a segmental nut formed in the end Z thereof, to engage with the screw Gr, and a spring, g, at or near the end d, to throw theA nut into contact with the screw, and all arranged to operate substantially as and for the purpose setforth.

2. The shoulders el and e2, constructed and arranged to operate substantially as and for the purpose set forth.

` JAMES A. PARTRIDGE.

Witnesses:

' JOHN E. CRANE, J. S. WHITNEY.

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