US797560A - Wrench. - Google Patents

Description

No. 797,560. PATENTED AUG. 22,` 1905. H. J. CONBATH.

WRENCH.

APPLICATION FILED APB. 14.1905.

Z6 zfygami Witness s lnven or.

lf f f. by

` l 1 l f l' A -Attorneys HENRY J'. OONRATH, OF MARIETTA, OHIO.

WRENCH..

ivo. 797,560.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed April 14, 1905. Serial No. 255,606.

T0 @ZZ whom, t may con/cern:

Be it known that I, HENRY'J. CONRATH, a citizen of the United States, residing at Marietta, in the county of Washington and State oi' Ohio, have invented a new and useful i/Vreneh, oi' which the following is a specification.

This invention relates to slidable -jaw wrenches, and has for its object to provide novel means carried by the slidable jaw to adjustably interlock the same with the stock of the wrench and tol have the controlling part ot said locking or clamping means in position for convenient access, so as to facilitate the adjustment oi' the jaw. It is also proposed to have the parts of the locking means efectually housed within the movable jaw, so as to protect them against damage and Vdisplacement and at the same time to permit convenient assemblage and removal of these parts whenever desired.

The invention consists in the combination and arrangement of parts as will be hereinafter more fully described, shown in the aecompanyingdrawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and. minor details may be made within the scope of the claims without departing from the spirit or sacrificing' any of the advantages of the invention.

Tn the accompanying drawings, Figure 1 is a longitudinal sectional View of a wrench embodying the features oi the present invention.V Fig. 2 is a cross-sectional view on the line 2 2 of Fig. l. Fig. 3 is adetail perspective view of the jaw-locking member. Fig. 4 is a detail perspective view of the lever for controlling the locking member.

Like characters of reference designate corresponding parts in each and every ligure of the drawings.

The present wrench includes astock 1, which is provided at one end with a conventional 'form oi' iixed jaw 2, its opposite end being' reduced to form a cylindrical stem 3, which is terminally threaded, as at 4. Upon the stock is a conventional form of slidable jaw 5, which is provided with an open-ended longitudinal passage 6, receiving the stock. so as to permit slidable movement of the jaw. In

what will be termed the front ol1 the movable jaw there is a recess 7, which exposes the ratchet-teeth S upon the adjacent edge of the Vithin this recessed portion of the stock.

slidable jaw there is a pivotal dog 9, which has its forward end provided with an eye 10 for the reception of atransverse pivot-pin 11, which pierces opposite sidesof the jaw for the pivotal support of the dog. That t'aceo'tl the dog which is adjacent the toothed edge of the stock is toothed, as at l2, to take into the teeth of the stock, so as to loch the movable jaw at any adjustment with respect to the fixed jaw 2. A longitudinal channel 13 is provided in the. dog and opens through its free cnd,there being a slot 14 in the exposedou ter face of the dog and intersecting the channel 13, thereby providing an internally-hanged channel which is the equivalent oi a dovetailed groove. At the outer side ofthe dog and about midway between the ends thereoil there isa pin 15, which pierces the jaw and is provided at one end with a head 16, countersunk in one external Jface oit` the jaw, the other end ol the pin being reduced and threaded for the reception of a circular nut 17, which is let into a recess 18 in the jaw, so as to be flush with the exterior thereof, said nut being provided with a diametric groove 19 in its outer face to form a screw-driver seat `for convenience in securing and removing the pin. It will here be explained that the pin 11 is secured in place in the same manner as described for the pin 15. A lever 2() is provided at one end with an eye 2l, receiving the pin l5, upon which the lever is fulcrumed, the free end of the lever being projected in rear of the movable jaw and provided with an enlargement or finger-piece 22. Upon the inner face of the lever and adjacent the fulcrum-pin thereof there is a headed or T-shaped pin 23, which works in the groove or channel 13, whereby the dog may be moved into and out of engagement with the stock by manipulation of the lever 9.0.

Upon the stem 3 there is a wooden handgrip 24 of the usual form and in the nature of a sleeve, the inner end of the grip being received within a metallic ferrule 25, litting the non-circular outer end portion of the stock l, so as to prevent rotation thereof, there being a suitable nut 26 litted to the threaded extremity It of the stem, so as to hold thehandle in place. By removing the nut 26 the handle 24 and ferrule 25 may be removed from the stem to enable the application and removal of the movable jaw, and thereby to permit of the convenient assemblage of the dog 9 and lever 20.

Among the several advantages of the present device it will be noted that the free end of the lever 20 extends toward the handle 24C, and therefore may be manipulated by the thumb Without removing the hand from the handle, thereby permitting of' the convenient adjustment of the movable jaw. Moreover, as the lever 2O is positively connected to the dog 9 through the medium of the pin or link 23 the dog is positively moved into and out of engagement with the stock, thereby to insure the prompt locking and releasing ofthe movable jaw.

Having fully described the invention, what is claimed isl. Ina Wrench, the combination with a stock having a fixed jaw, of a movable jaw, a pivoted dog carried by one of said jaws for clamping the movable jaw in adjusted position, said dog being provided with a flanged groove, and a controlling-lever fulcrumed in advance of the pivoted dog and provided with a transversely-disposed headed pin working in the l anged groove of the dog for moving said dog to operative and inoperative positions.

2. In a Wrench, the combination With astocl having a fixed jaw, of a movable jaw, a pivoted dog carried by one of said jaws for clamping the movable jaw in adjusted position, said dog being provided with a anged groove eX- tending from its pivotal point and opening through the free end of the dog, and a eontrolling-lever fulerumed in advance of the pivoted dog and provided with a projecting pin having' laterally-extending ears adapted to engage the Walls of the flanged groove for moving the pivoted dog to operative and inoperative positions.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two Witnesses.

HENRY J. CONRATH.

Witnesses:

CHARLES F. LEEPER, WM. H. LEEPER.

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