US743359A - Wrench. - Google Patents

Description

PATENTED NOV. 3,190 I. WBISNEK.

WRENCH.

APPLIOATION FILED JULY 7 1903.

no MODEL.

Patented November 3, 1903.

PATENT OFFIC IGNATZ WEISNEK, OF FEDERAL, PENNSYLVANIA.

WRENCH.

V SPECIFICATION forming part of Letters Patent No. 743,359, dated November 3, 1903.

Application filed July '7, 1 903.

To all whom it may concern:

Be itknown that I, IGNATZ WEISNEK, a citi zen of the United States of America, residing at Federal, in the county of Allegheny and State of Pennsylvania, have invented certain new and usefullmprovementsiu Wrenches, of which the following is'a specification, reference being bad therein to the accompanying drawings.

This invention relates to certain new and usefulimprovements in Wrenches, and relates more particularly to that tpye generally known in the trade as monkey-wrenches; and the primary objectof this invention is to simplify the construction and facilitate the operation of the wrench with one hand.

Briefly described, the invention comprises a wrench-shank provided on one end with a rigid jaw and on its other end carrying a suitable handle. A movable jaw is slidably mounted on the wrench-shank, and within this movable jaw is apivotally-mounted toothed dog or pawl that is under the tension of'a spring and is thus normally held in engagement with teeth carried on the inner face of the wrench-shank. Pivot-ally connected to one end of the toothed dog is a yoke which straddles the wrench-shank and has movement transverse to said shank, the outer end of this yoke carryinga thumb-piece, by means of which the yoke may be operated in order to force the toothed dog away from the teeth of the wrench-shank and permit the sliding jaw to be moved to any desired position on the shank. A plate is attached to the back .of the sliding jaw and carries projecting fingers, which lie in back of the straps of the yoke, and thus hold the yoke in its proper position to prevent the samefrom falling toward the handle end of the wrench.

All of the above construction will be hereinafter more fully described, and specifically pointed out in the claim, and in describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like nu merals of reference indicate like parts through out the several views, in which- Figure 1 is a plan view of my improved wrench. Fig. 2 is a rear elevation partly broken away. Fig. 3 is a plan view with the sliding jaw in section to showthe toothed dog.

Serial No. 164,587- (No model.)

Fig. 4 is a detached detail perspective view of the operating-yoke. Fig. 5 is a like view of the plate for holding the yoke in proper position. 1

To put my invention into practice, Iprovide the wrench-shank 1, which at its outer end carries a rigid jaw 2 and at its other end is provided with a suitably-secured handle 3. On the wrench-shank is mounted the slidable jaw 4:, which is provided with an interior recess 5, in which is located the toothed dog 6. This toothed dog 6 has its inner end pivotally secured, as at 7, to the sliding jaw,and the outer end 8 of the dog projects beyond the rear end of the slidable jaw. The teeth of the dog 6 are held normally in engagement with the teeth 8 of the wrench-shank by means of a spring 9, which bearsagainst the dog 6, as clearly seen in Fig. 3 of the drawings. The teeth 8 of the wrench-shank may be integral with the wrench-shank, or the latter may be grooved longitudinally on its inner face and a bar providedwith teeth set in this groove and suitably secured, the teeth of course projecting beyond the inner face of the bar. In order to operate the dog 6 so as to move the teeth thereof out of engagement with the teeth of the wrench-shank, I provide a yoke 10, which straddles the wrench-shank 1 and is bifurcated or split at one end to receive therein the end 8 of the dog, which is pivotally secured in position. The other end of this yoke is pro vided with a thumb-piece 11, which lies directly over the back of the Wrench-shank l and is preferably knurled, as seen in Figs. 2 and 4: of the drawings. Attached to the slidable jaw 4.- by means of a screw 12 or in any other suitable manner is a plate 14, which has projecting fingers 15 to engage in back of the side straps of the yoke 10, as clearly seen in Fig. 1 of the drawings, thus preventing the yoke from moving toward the handle end of the wrench. The thumb-piece 11 projects rearwardly beyond the plate l4,as seen in Figs. 1, 2, and 3, whereby it maybe readily engaged by the operator.

To operate the wrench, it will be apparent that it is only necessary to depress the thumbpiece 11 toward the wrench-shank in order to cause the yoke 10 to move the dog 6 in a manner to disengage its teeth from the teeth of the wrench-shank and allow the shifting ICO of the slidable jaw into any desired position upon the wrench-shank. As soon as pressure on the thumb-piece 11 is removed the spring 9 will force the teeth of the dog into engagement with the teeth of the wrench-shank and hold the slidable jawin the adjusted position.

It will be apparent that when the yoke is depressed and the dog thus disengaged the operator may move the slidable jaw by the aid of the thumb with which he depresses the yoke either toward the rigid jaw or away from the same in order to give the desired space between the two jaws.

Although in the present illustration I have shown the teeth of the dog and those of the wrench-shank as both being straight-cut teeth, it will be apparent that if the teeth of the wrench-shank are made inclined toward the rigid jaw the adjustment of the slidable jaw would be obtained without requiring the depressing of the yoke 10, only necessitating the depressing of the yoke and the consequent disengagement of the dog when it was desired to move the slidable jaw toward the handle end of the wrench.

It will be noted that various changes may be made in the details of construction without departing from the general spirit ofv my invention.

Having fully described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

In a wrench,the combination with a wrenchshank having teeth on its inner face and provided at its outer end with a. rigid jaw, of a slidable jaw mounted on the wrench-shank and provided with a recess, a toothed dog pivotally mounted in said recess with its rear end projecting beyond the slidable jaw, a spring normally holding said toothed dog in engagement with the teeth of the wrenchshank, a yoke straddling the wrench-shank and pivotally connected to the extending end of the toothed dog, a thumb-piece carried by said yoke, and a plat-e secured to the slidable jaw and provided with inwardly projecting fingers engaging the yoke to hold the latter in position, substantially as described.

In testimony whereof I affix my signature in the presence of two witnesses.

lGNATZ VVEISNEK. Witnesses:

R. A. RUEss, E. E. POTTER.

Images