US728007A - Wrench. - Google Patents

Description

PATENTED MAY 12, 1903.; W. H. PRESTON.

WRENCH. APPLICATION nLn'n 82M. 20, 190

N0 MODEL.

UNITE STATES Fatented May 12, 1903 Y ATENT OF ICE.

WILLIAM H. PRESTON, OF VALLEY JUNCTION, WISCONSIN, ASSIGNOR TO PHILIP M. KN IPPENBERG, PORTAGE, WISCONSIN.

,WRE'NCH.

SPECIFICATION forming part of Letters Ilatent N0. 728,007Tdated May 12, 1903. Application filed September 20, 1902 Serial No. 124,180. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM H. Pnnsron, residing at Valley Junction, in the county of Monroe and State of Wisconsin, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

This invention relates to improvements in that type of monkey-wrenches having a slid-' ing jaw and means for clamping the sliding jaw-to a locking position after the same has been adjusted upon the shank.

The object of my invention is to provide a wrench of this character having a sliding jaw so constructed that the .same can be quickly adjusted and held firmly in place while being used and in which the several parts constituting the instrument can be easily and economically made, conveniently manipulated, and which will effectively serve for its intended purposes.

My invention comprehends certain novel structural detailed combinations of parts, involving a non-circular shank having the fixed head-jaw and threaded on its opposite edges, a jaw held to slide freely upon the said shank,

a feed nut or sleeve having an internal an-' ing an annular external ratchet-face having coaction with the pawl carried upon the sliding jaw, adapted to automatically engage .the said ratchet-face and hold the nut from reverse turn during the operation of clamping the sliding jaw in place.

In the accompanying drawings, in which like numerals indicate like parts in all the figures, Figure 1 is a perspective view of my improved monkey-wrench. Fig. 2 is a vertical section of the same. Fig. 3 is a horizontal section showing the parts adjusted to allow for a free sliding adjustment of the movable ja'w. Fig. 4 is a similar view showing the parts adjusted to hold the sliding jaw to a locked position. Fig. 5 is a detail view of the sliding jaw. Fig. 6 is a similar view of the turn nut or sleeve. Fig. 7is a detail view of the locking-pawl hereinafter referred to.

In its practical construction my improved wrench comprises a shank 1,- upon the upper end of which is integrally or otherwise fixedly secured a stationary jaw 2. has its opposite sides l m'ade fiat and nonthreaded, its opposite edges being rounded on a circle corresponding with the internal annular surface of the nut'or sleeve 3, presently referred to, and the said edges have threads 1, the reason for which will presently appear. p

The sliding jaw 4 has the usual rectangular mortises 4 4 and a clamping member 4, that oppose the jaw 22. The front edge of the sliding jaw has a pendent extension 4, the lower end of which terminates in an intu'rned lip 4 and bifurcated fingers 4", that straddle the front edge of the shank and serve to guide the jaw 4 in its vertical adjustments upon the said shank, and the said extension 4 is disposed away from the front edge of the shank,

.so as to produce a slotway in which the nut or sleeve '3 turns, said nut 3 having a thickness equal that of the space between the bottom edge of the jaw 4 proper and the lip 4 The nut or sleeve 3 is made circular and has an internal bore whose diameter is equal that of the major axis of the shank 1, and said bore has two diametrically oppositely disposed smooth unthreaded surfaces 3 and two alternately arranged threaded surfaces 3 The outer or peripheral surface of thenut or sleeve3 has an annular ratchet-rim 3, with which a pawl 5, spring-acted to its locking position, engages, said pawl having a tooth 5, so beveled as to permit the nut 3 being screwed home and to hold it from return movement. The pawl 5 is fitted in the socket 4 formed on the front face of the jaw 4, said front face also having an elongated slot 4 for the passage of the tooth 5. The lower end The shank 1 of the pawl 5 extends below the pendent extension of the sliding jaw 4t and terminates in a finger-piece 5.

From the foregoing description, taken in connection with the accompanying drawings, it is thought the advantages of my improved wrench will readily appear.

When it is desired to freely move the jaw 4 upon the shank, the nut 3 is turned to bring the unthreaded portion of its bore into register with the threaded edges of the shank, said nut being held in its position by the pawl 5. When thus adjusted, the jaw 42 can be quickly slid up to clamp against the work, after which by turning the nut 3 to the right to bring its threaded bore portions into mesh with the threaded edges of the shank the jaw 4 will be held securely clamped against the work and from back turn or loosening by the pawl 5, which engages the external ratchet-face of the said nut 3. To release the sliding jaw, it is only necessary to push out the pawl 5, so its tooth 5 will become disengaged from the ratchet-rim of the nut 3, which then can be turned to bring the smooth bore-surface int-o register with the threaded edges of the shank, when it (the jaw l) irrespective of the position of the pawl 5 can be slid up or down at will. By making the ratchet-face externally of the nut it also forms a roughened surface to facilitate the turning thereof.

I am aware that sliding-jaw wrenches have heretofore been provided having a shank provided with a threaded surface and a washer or nut formed with a gear-face adapted to move into mesh with the threaded edges of the shank, and I therefore make no claim, broadly, to such construction. My invention difierentiates from what has heretofore been provided in this type of monkey-wrenches, so far as I know, in the peculiar construction of the nut or sleeve and its cooperation with the shank and the sliding jaw and particularly in the detailed construction thereof, in which the peculiar arrangement of the holdback pawl and the ratchet-surface of the nut form essential features.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. A monkey-wrench, comprising the usual fixed and sliding jaws, the latter having an inturned lip, a shank with two plain and two threaded portions, a not having an external annular ratchet-face, a central bore having two oppositely-threaded surfaces and two intermediate plain surfaces, the threaded surfaces being arranged to mesh with the threads of the shank, the said nut being held to turn between the bottom of the sliding jaw and the inturned lip member of the said sliding jaw, a spring-pawl carried by the sliding jaw adapted to engage the ratchet-face of the nut, all being arranged substantially as shown and described.

2. The hereinbefore described improvements in monkeywrenches comprising in combination; a shank having two fiat sides and two screw-threaded edges, and a fixedlyheld jaw; a sliding jaw, said slidingjawhaving a pendent member formed with an inturned lip, said lip having bifurcated ends fitting over the front edge of the shank, the front face of the sliding jaw having a vertically-disposed socket and a slot, a circular nut or sleeve adapted to turn with one edge between the bottom of the sliding jaw and its inturned lip, said nut having a central bore formed with two oppositely-disposed smooth surfaces and intermediate screwthreaded surfaces,and having an outer annular ratchetface, and a spring-pawl mounted in the socketed edge of thesliding jaw, said pawl having a tooth projected through the slot in the said jaw to engage the ratchet-face of the nut, the lower end of the pawl being projected below the inturned lip of the sliding jaw and ending in a finger-piece, all being arranged substantially as shown and for the purposes described.

WILLIAM H. PRESTON. Witnesses:

H. M. SowLE,

W. H. BOYINGTON.

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