US916468A - Wrench. - Google Patents

Description

W. M. MBBK.

WRENCH.

APPLIoATIoN FILED MAR. 4, 190s.

91 6,468r Patented Mar. 30, 1909. /z'sursfTs-SHBBT 1.

STAllzlS PATENT OFFlOE.

WiLLIAM M. Mann,

OF SEATTLE, WA`SHINGTON, ASSIGNOR O1" ONll-l-IALF TO IMOGEN M. l LAMBERTON, Ol? MOUNTAIN HOME, IDAHO.

WRENCH.

Specification of Letters Patent.

patented March so, 1909.

Application filed March 4, 1908. Serial'No. 419,186.

T0 all whom it may concern:

Beit known that 1, VvrILLIAM M. MEEK, a citizen of the United States, residing at Seatle, in the county of King, State of Washington, have invented certain new and usei'ul Improvements in Wrenches; and l do hereby declare the icllowing 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.

My invention relates to wrenches, and more articularly to quick acting monkey wrene ies.

'The object of the invention is to provide a device of this character which will be quick and positive in action, cheapto manufacture, and whichwill enable the operator to adjust the Wrench to any desired size of nut, within ,the scope of the jaws, in a very rapid manner,

without having to operate the adjusting nut.

Afurtherobject of the invention is the provision of means which enables the operator to positively move the jam or adjusting nut away from its rack in a straight line and to eHect this movement with the thumb of the hand which is used in applying the wrench. Heretofore,l in wrenches of this type, the lower jaw has been rocked on the shank of the wrench, or the adjusting nut has been ivoted to move at an angle to the shank. ith such a construction the adjusting nut has very little movement adjacent its pivotal point and very frequently the threads on the nut at such point will not disengagc Alrorn their rack connection.

It is the object ol my invention to obviate such dilhculties, and Abroadly speaking consists in so mounting the adjusting nut that it moves in a plane substantially parallel to the shank and thereby frees all of its threads from the rack simultaneously.

In the drawing nhich forms a part of this application, Figure l is a side elevation of the wrench, Fig. 'Z is a similar viera'Y with one side of the lower j av.'Y l'rame in section. Fig. 2? is a detail perspective view of the adjusting nut frame, removed from the wrench, with the adjusting nut journaled therein, and, Fig. 4 is a sectlonal view showing-the nut pressed away from the rack teeth.

Referring more especially to the drawings 1 represents a shank, preferably rectangular in cross section, one end of whichserves as an operating handle while at its opposite end it is provided with a transversely extending upper 2. Extending along the front face of the shank and )rejecting therefrom are a series of diagonally arranged teeth 3 forming a rack, chich will be spoken ol hereinafter. 'l'he lower jaw 5, 'wlnch is bored in the usual manner to permit its disposition upon the shank, is provided with a transverse rectangular passage 6 which opens through the rear wall of said jaw and is intersected at right angles by the above-mentioned bore. ll ithin said assage there is disposed a hollov; rcctangu ar frame 7 which carries at its forward end aperipherally threaded rotatable nut 8 whose opposite ends are journaled in the top and bottom plates of said frame, the side plates ol` ulrich latter as well as the side walls of the lower jaw are cut away at such point so as to expose the nut and permit access thereto. rl`his nut has its threads held normally in engagementI with the rack teeth 3 by means of a leaf spring 9 which is located within the passage (j and is secured centrally to the inner face of the front n all of the sliding ja n', the opposite ends of said spring bearing against the front plate of said frame, the top and bottom plates of which are provided with slots l() through which the shank extends, thel length of said slots being slightly greater than the thickness of the shank, to permit a sliding movement of the frame, transversely of the latter, under the tension of the spring. rthe lorgth of the sliding lrame is such that its rear end projects through the open rear wall ol' the jaw 5 when the nut and rack are in engagement, such end forming an operating portion by means of ulrich the frame may be moved innardlj,r against the action olI the spring, to disengage the nut from the rack vhen the position ol the sliding jaw is to he adjusted, the sidel walls of said jaw being out au ay or concaved at their rear edges, to allord further access to the l'ramc end.

ln operation, the thumb of the handavhich applies the wrench presses upon the projecting cnd of the frame and forces the latter in- \.\.ardly against the tension of the spring 9. 'lhis carries the nut S out of engagement with the rack teeth 3, whereupon the lower jaw can then be moved as desired. lf the adjustment is not line enough the nut may' be rotated to move the jaw gradually on the rack teeth. It will be seen that the adjusting nut always moves in a planeparallel to the shank and thereby frees all of its threads simultaneously the spring 'returning the nut and frame to normal pressure is released.

What is claimed is A Wrench com rising a shank provided with a toothed slde and a relatively xed Jaw on one end, a relatively movable jaw. slidabiy mounted on the shank and having a transverse opening therethrough on the toothed side of said shank and apassage Wider than said shank formed in said jaw intermediate its length (perpendicular to said transverse opening an extending through the side of the movable. jaw opposite said opening, a hollow block slidable Within said positions as soon as the passage and having a slot therethrough for the passage of said beyond the teeth of the same, a eripherally threaded rotatable nut mounted to turn in said block and enga e the teeth of the shank, and a spring locate within said opening between the front Wall thereof and the inner end of said block, said spring tendin to hold the'outer end of said block beyond t e plane of the movable jaw and said nut in engagement with the shank teeth.

, In testimony whereof, I aflix my signature, in presence of two Witnesses.

WILLIAM M. MEEK;` l/Vitnesses n THOMAS B. MAoMAHoN,

HENRY W. C. SonErP.

shank and extending

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