US1291214A - Wrench. - Google Patents

Description

F. S. SMITH.

WRENCH.

APPLICATION FILED III/IY II, i918.

Fatented Jau. 14, 1919.

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naciera.

Application led May 11, 1918.

To all 't0/wm it may concern j Be it known that 1, FUnMoN S. SMITH, a citizen of the United States, residino1 at Grants Pass, in the county of Josephine and State of Oregon, have invented certain new and useful lmprovements in Wrenches, of which the following is a specification, reference being' had to the accompanying drawings.

This invention relates to certain new and useful improvements in wrenches, and has for its primary object to provide means adapted to that type of wrench having a screw adjustable sliding` jaw whereby a positive binding pressure of the jaw on the object may be obtained and the jaw then securely looked against movement.

llt is another object of the invention to provide an improved tool of the character above stated whereby the same may be utilized as in the manner of the ordinary wrench, and in addition as avise, pincers or analogous tool.

1t is also a further general object of my invention to improve and simplify the construction of wrenches of the slidingjaw type whereby the same are rendered of greater utility as well as more edective and reliable in practical use, though without greatly complicating the construction or materially increasing the manufacturing cost of suchb tools..

With the above and other objects in view, the invention consists n the improved combination, construction and arrangement of the several parts as will be hereinafter more fully described, subsequently claimed and illustrated in the accompanying drawing` in which similar reference characters designate corresponding parts throughout the several views, and wherein:

ligure 1 is a side elevation of a wrench illustrating the preferred embodiment ofthe invention g l? ig. 2 is a similar view part] in section and showing the sliding jaw loc `ed in binding` engagement upon an object;

ig. 3 is a section taken on the .line SW3 of llig. 2; and j ltig. d is a section taken on the'vline ll-Ji of ltlg. 2..

Referring in detail to the drawing, 5 designates the shank of the wrench having a fixed or stationary jaw 6 formed on one of its ends.. 'l' designates the movable or adjustable wrench jaw opposed to the stationary Specification of Letters Patent.

Patented dan.. diminuta. seriaino. ceases.

jaw 6 and having the spaced laterally eX- tending yolres 8 loosely engaged on the wrench shank 5. rlhe jaw 7 is further provided with a threaded bore to receive the adjusting screw 9, said screw having the usual lrnurled disk or nger piece 10 whereby said screw maybe conveniently rotated.

To the other end of the shank 5 the :longitudinally extending side plates curely riveted at one of their ends as indi cated at 12. rllhese plates at their other ends are of increased width and between the saine the channel-shaped arm la of a handle ineinber 13 extends. A rivet 15 is fixed in the side plates 11 and extends loosely through the spaced portions of the channel-shaped arm 14 whereby the `handle member is retained between `the side plates for pivotal movement. The arm 14 at its inner end is curved as at 16, and the medial portion of this arm-is formed with an inwardlyprojeeting lug 1i' for a purpose which will be presently stated.

A second handle member 18`also has a channeleshaped arm 19 extending between the side plates 11, and this arm is pivotally engaged upon the rivet 9.0 connecting said plates adjacent to the ends of the wrench shank 5. rllhe side portions of the channelshaped arm 19 at the pivoted end thereof are laterally'extended as at `9.1 and project over the rounded end 16 of the arm 13, said extensions having their inner edges concaved as shown at 22. rilhese lateral extensions at their ends are angularly bent toward each other and between the opposed edges thereof a screw 23 is rotatably engaged.. This screw also has threaded engagement in a shiftable nut 211 arranged between the side portions of the arm la of the handle member 13 and having frictional engagement therewith. il. wire spring `25 has its terminals connected to the handle members 13 and 18 and is provided with a single Centrally formed coil 26.

The lower end of the jaw adjusting screw 9 is rotatably engagedbetween the lateral extensions 21 of the handle member 18.

lin the operation of the device, the screw"9 is rst rotated to move the aw upon the wrench shank and into engagement with the object disposed between said jaws. The handle members 13 and 18 are then forced toward each other and the end edges 16 of the channel-shaped arm 14 coacting with the concave edges 22 of the extension 21 on the 11 are seof the wrench other handle member, further urges the adjustable jaw upon the object so that said jaw will have a binding, gripping engagement with the object. The screw 23 is now rotated, and when the end of this screw comes into bearing contact against the arm 19 of lthe .handle member 18, the nut 24 will move laterally on the screw and into contact with the inwardly projecting lug 17 on the arm of the handle member 13. The screw and the nut will thus hold the handle members against relative lateralmovement under the action of the spring 25, and the jaw 7 will also be held against inward shifting movement on 'the wrench shank. Thus, greater bindingor gripping pressure of the jaw on the object can be obtained than would be possible simply by the adjustment of the screw 9.

Frein the foregoing description taken in connection with the accompanying drawing, the construction, manner of operation and several advantages yof the invention will be clearly and fully understood. The improved tool may be used in the manner of the ordinary wrench, and 'also as a vise, pincers or analogous tool yemployed to securely grip and hold an object. The present improvement can be employed in conjunction with thewell known monkey wrench 'new in general use and will 4not add materially to the manufacturing cost thereof. It is, of course, apparent that IV may, however, provide wrench jaws of 'other forms than those illustrat'ed in the drawing, as for instance, the jaws may be formed with their opposed faces 4angularly extending with respect 'to the axis shank. They also can be Toughened lor serrated if desired so as to obtain a more secure gripping engagement with the object. vOwing to the simple construction of the device and the compact arrangement `of its several parts, the tool may be easily adjusted and manipulated in corners or otherv close places.

While `I have herein shown and described the prefer-red construction and arrangement of the various parts, it is to be understood that the device is susceptible of many vmodifications therein and I therefore reservev the privilege of adopting all such legitimate changes as may be fairly embodied within the spirit and scope o'f the invention as claimed.

I claim :es-

1. A wrench comprising a shank having a ixed jaw on one end, an adjustable jaw on said shank, pivotally mounted handle members, adjusting means for the latter jaw connected to one of said handle members, and manually operable means to hold the handle members against relative movement and retain the adjustable jaw in engagement with an object, said means including permanently engaged relatively movable parts coacting with the respective handle members.

2. A wrench comprising a shank having a fixed jaw on one end, an adjustable jaw on said shank, channel -shaped pivotally mounted handle members, adjusting means for the latter jaw connected to one of said handle members, and means for locking said handle members against pivotal movement to retain the adjustable jaw in gripping engagement upon an object, said means including permanently engaged relatively movable parts housed within the channels of the handle members and coacting with the respective handle members.

3. A wrench comprising a shank having a xed jaw on one end, an adjustable jaw on said shank, longitudinally extending side plates fixed to the shank, a pair of handle members pivotally mounted between said plates, one of said handle members having a 'lateral extension on its pivoted end with which the other handle member coacts, an adjusting screw for the latter jaw connected to said lateral extension of the handle member and through the medium of which said jaw is shifted toward the fixed jaw when the handle members are moved towlard each other, a spring urging the handle members apart, a screw rotatably mounted in the lateral extension of the handle member and a nut threaded upon said screw and adapted to be moved thereby into binding engagement with the other of the handle members, said screw eoacting with the first named handle member and in conjunction with the nut preventing the pivotal movement of the handle members to their normal positions whereby the adjustable jaw is retained in gripping engagement with the object.

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

FUR-MON S. SMITH. Witnesses H. D. NORTON, F. G. UPHAM.

(Jopies of this patent may be obtained for 've 'cents each, by addressing the Commissioner of Patents, Washington, D. C.

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