US1697535A - Wrench - Google Patents

Description

A. A. MCGILL Jan. 1, 1929.

WRENCH Fle Feb. 4, 1927 Patented Jan. l, 1929.

l Unirse sierras l i Mh PATENT 1 @EHCEt*` ARTHUR A. MCGILL, 0F WISNER, NEBRASKA.

WRENCH.

Application tiled February 4, 1927. Serial No. 165,892.

other by means of an adjusting nut which serves to loperate a screw threaded actuator which is connected to the movable jaw.

In the present embodiment, the jaws are disposed at somewhat obtuse angles with respect to the longitudinal axis of the main handle. The actuator screw has pivotal connection with the movable jaw, and is disposed in substantial alinement with the longitudinal axis of the handle in which itis slidable.

The outstanding improvement, is the provision of a pivotally mounted hand-grip which is carried by the handle and which cooperates with a nut on the actuator screw in such a way-as to produce pressure. With this arrangement, the movable jaw can be set with rather reasonable accuracy through the medium of the adjusting nuts, after which final and powerful pressure can be brought to bear on the object gripped, in order to in-V sure a firm anti-slipping gripping of said object.

The specific details cooperating to provide' the alleged novel structure, will become ap` parent from the following description and drawings. A j

In the accompanying drawings forming a part of this application, and in which like numerals are employed to designatek like parts Jthrough-out the same Figure lis a side View with portions broken away and shown in section, disclosing va wrench constructed in accordancewith the present invention, and indicating the pres-V It will be noticed thatthis shank is 'disposed at right angles to the aw'propei, and also the` inner end of the shank terminates in aperl tured ears 7 v (see Fig. 2), and adjacentthese ears is a rigid lug 8.

The actuator screw or bolt 9 is disposed in substantial alinement with the longitudinal axis of the handle 1, as shown'in the draw-f with a connecting end pivot pin-10 whichex-f ings, and this is provided at its outer ends tends throughthe apertures in the'ears 7 and also project outwardlythrough the diagonal; slots 11 formed opposite each other in thei furcations 4. In other words, I providea-` pair of these slots, one in each furcation or.

guides, and the slots are disposed one opposite the other. The screw is provided with a lug 8a, and the coiled spring 12 is 'connected to this lug and with the first named lug 8 as shown in dotted lines.l The adjustingiiutwhich `is threaded on. thelower endy of the actuator screw is represented by the referfV Closely associated with the details last men-r tioned is the hand grip 15, which is in the form of a. sheet metal stamping of channel-.vshapedcross section, the same being of a size to swing or telescope between the walls ofthe handle.'v At its upper end and on itsv open side, this handgrip is pivoted as at'1`6, and thisupper end portion is formed withelon gated openings to accommodate the v'nuts 13.` An extension spring 17 vserves to normally force the hand-grips to the expanded position i represented in Fig. 1. j n j.. A v,i With this arrangement, -it isl obvious thatl by pressing the hand-grip into the handle,a

downward stress or pull will be exerted upon` i the nut 13. In so doing, this will draw the,

actuator screw 9 and impart additional sliding movement to' the movable jaw. f Hence, it will'be seen that the initial adjustments will be lmade ina somewhat conventional manner,

by adjusting the nut 13, thus moving-the jaw 6 to a set position. "However, the additional movement provided by actuation of the hand grip 15 will serve to produce a supplemental movement of the movable jaw in order to acquire firm pressure and a reliable anti-slipping grip on the object between the jaws.

Incidentally, it will be noticed that the thickness of the jaw 6 is such as toprovide a shoulder at its point of connection to the shank 5; and to'limit the swinging movement in a direction from left to right. Moreover, the action of the spring 12 will serve to holdV rthis jaw in the positionA represented in the drawing. While the jaw 6-is limited in its movement in a direction from right to lef-t5, it is obvious that it is swingable in an. op-posite direction about theL pivot 110. This allows the aw to cant in order to obtain al goodV grip on the object, t-hus rendering it adapted for use as a pipe Wrench. I-Iowever the spring 12 serves to resist the pivotal movement of the jaw and aidsin returning it to its normall position..

Itmay not be desirable to maintain a constant grip. upon the hand-grip, and' in view oi'this, I' provide al retaining devicev comprising a. small bolt 18 having a k-nurled fingerpiece19 and a nut 20; The nut cooperates with inturned wings 211 formed upon the hand-grip as representedy in Fig. 3. With this arrangement, after the hand-grip has been moved to a final pressure-producing position, the adjusting device may be manipulated to hold it in this position.

The construction as well as the advanvention will. doubtless be clear after read.-

' ing` the foregoing description in connection with the drawings. In view of this a more len ily description is thought unnecessary.

.hile the lreferred embodiment of the invention. has n described and shown, it is to be understood that minor changes coming within the field of invention claimed, maybe resortedI to if desired.

Having thus described my invention, what I claim as new is 1. In a wrenchof the class described, a handle, a rigid jaw extending at an angle trom the outer end of 'the handle, guides carriedi by saidhandle and extending outwardlyV in spaced relation beyond said rigid j aw-` the movable jaw includingy a. shank slidably mounted between said guides, a pin and' slot connection between said shank and guides, an adjusting screw pivotally connected with saidi shank, an adjusting nut carried by said screw, and a hand grip pivotally mounted upon said handleand cooperating with saidy nut. for sliding said movable jaw. j

2l Inf. a wrench of the class described, a hollow handle, a rigid jaw extending at an angle from the outer end of the handle, s aced parallel guides carried by said hane and extending outwardly beyond said rigid jaw, a movable jawincluding a shaiik slidably mounted between said guides, and movable toward and from said rigid jaw, an adjusting screw connected with said shank and extending down and into said handle, an adjusting nut carried by said screw and cooperable with said handle, a hand grip pivotally mounted in said handle and cooperable with said` nut for moving said sliding jaw toward said rigid jaw when said hand grip is pressed into said handle., and an expansion spring interposed between the handle and hand grip for moving the hand grip outwardly when the latter is released.

3. In a wrench of the class described, a handle of channel shaped cross section provided at its outer end with a'substantially right angu-larly disposed rigid jaw, portions of the handle extending beyond said aw and' constituting spaced parallel guides, a movable aw including a shank slidable between said guides, an adjusting screw connected with said shank and extending downj between the side walls of said handle, said side walls being provided with openings, a regulating nut carried by said screw and located in said opening, a hand grip fitted telescopically between the side walls` of the handle and pivotally connected thereto and having` operating connection with saidv nut, and an expansion spring interposed between the tion, an angularly disposed rigid aw at the outer end of the handle and on one side of the handle, spaced parallel guide extensions carried by the outer end of the handle and extending outward'ly beyond said jaw, saidV extensions being formed with diagonal slots, a movable jaw including a right angular shank slidably mounted between said extensions, pins carried by said shank and movable in said slots, an adjusting screw connected with said shank and extending down between the side walls of the handle, said side walls having opposite openings formed therein, an. adjusting nut on said screw extending out through said openings, a hand grip fittedV telescopically between said' side walls 4and pivotally connected thereto and having operating connection lwith said nut, and an expansion spring interposed between the hand grip and handle.-

In testimony whereof I aliix my signature.

ARTHUR A. MCGLL.

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