US1121229A - Wrench. - Google Patents

Description

LUIGI CAPPAIBIANCO, 0F BBIDGEFORT, CONNECTICUT.

\VRENCH.

Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed July 20, 1914. Serial No. 851,920.

T 0 all whom it may concern Be it known that I, LUIGI Carranranoo, a citizen of the United States, residing at Bridgeport, county of F airfield, State of Connecticut, have invented an Improvement in renches, of which the following is a specification.

This invention has for its object to provide a strong and durable wrench capable of a fine adjustment and provided with means for rigidly locking the movable jaw after adjustment so that there will be no play whatever of the parts.

With these and other objects in view I have devised the novel locking wrench which I will now describe, referring to the accompanying drawing forming a part of this specification and using reference characters to indicate the several parts:

Figure 1 is a view of my novel wrench partly in elevation and partly in section and illustrating the construction and mode of operation thereof, and Fig. 2 is an elevation, partly broken away, as seen from the right in Fig. 1.

10 denotes the body, which is provided with a longitudinal hole 11 and a circular shoulder 12 within the hole, and 13 the fixed jaw which is formed integral therewith.

14 denotes the movable jaw which is carried by a shank 15 adapted to slide in the hole and is provided at its inner end with a reduced threaded portion 16 which engages an internally threaded sleeve 17 lying within the hole and having a head 18 adapted to engage the shoulder.

At the outer end of the bodyand in alinement therewith is a rotatable hand piece 19 which also has a longitudinal movement. This hand piece is provided with a longitudinal hole 20 continuous with hole 11 in the body and is provided at its upper end with lugs 21 adapted to engage corresponding recesses 22 at the lower end of the body.

Sleeve 17 is retained against longitudinal movement by means of a holding sleeve 23 which lies in holes 11 and 20 and between sleeve 17 and the body and hand piece. The inner end of the holding sleeve engages the opposite side of shoulder 12 from head 18 and the parts are retained in place by a pin 24; which passes through the holding sleeve and sleeve 17 and the ends of which lie in longitudinal slots 25 in the hand piece. The longitudinal movement of the shank, carrying the fixed jaw, in the body is limited by means of a pin 26, which passes through the shank and the outer end of which lies in a slot 27 in the body. A hole 28 is provided in the opposite side of the body to enable the pin to be driven out in disassembling when the pin is in alinement with the hole. At the lower end of the hand piece is an inwardly turned circular flange 29, the inner side. of which is engaged by a collar 80 on a stud 31 having atits outer end a knurled head 32 and at its inner end a reduced threaded portion 33 which is adapted to engage the thread of sleeve 17. As shown in the drawing,the thread of this sleeve is. not continuous. That, however, is an immaterial detail of construction.

The operation isv as follows: Rotation of the hand piece carries the internally threaded sleeve which is retained against longitudinal movement by the holding sleeve in cooperation with the shoulder, consequently through the engagement of the thread of the shank with the internally threaded sleeve, the movable jaw will be moved inward or outward, as may be required. To look the parts in place'after adjustment the hand piece is moved longitudinally to place the lugs thereon in engagement withthe recesses at the lower end of the body. This movement of the hand piece may be effected by rotation of stud 31 by means of the knurled head, or if preferred, owing to the longitudinal movement that is provided for the hand piece, said part may be moved to the locking position by hand and held there if the use is temporary, or locked there by rotation of the stud, the effect of which is, through engagement of the threaded portion of the stud with the internally threaded sleeve, to move the knurled head into engagement with the lower end of the hand piece, and then to move the hand piece longitudinally until its movement is stopped by the engagement of the lugs with the recesses. To change the adjustment of the jaws the hand piece must be moved backward to disengage the lugs and the recesses, which leaves the jaws free to be moved in either direction, as may be required, by rotation of the hand piece.

Having thus described my invention I claim:

1. A wrench comprising a body carrying a aw, a theaded shank slidable in the body and carrying a jaw, a hand piece in almement with the body, a threaded stud rotating in the hand-piece, an internally threaded sleeve within the body and the hand piece and engaged by the threads of the shank and the stud, means for retaining the sleeve against longitudinal movement and a connection between the hand piece and the between the hand pieceand the sleeves A wrench comprising a body carrying a jaw and having a recess in its lower end, a

threaded shank sli'dable in the body and carrying a jaw, a hand piece in alinement with the body and having alu adapted to engage the recess and slots in opposite sides, a threaded, studrotating-in the hand piece,

an internally threaded sleeve wit-hinthe body. and the hand piece and engaged by the threads of the shank and the stud, means for retaining the sleeve against'longitudinal movement and a pin passing through the slots in the hand piece and through the sleeve.

4. A wrench comprising a body carrying a jaw, a threaded shank slidable in the body flopies ot'thisr iatent may b e obtained for five cents each, b addressing the) Commissioner df r'at'e'nts,

and'carrying a jaw, a rotatable and'longitudinal'lyw movable hand. piece in alinement with the body, said hand piece and body having respectively a locking projection and a recess a rotatable threaded stud in the hand piece, an internally threaded sleeve within the body and the hand piece and ena recess, and said hand piece having an: in

wardly turned flange at its outer end, a rotatable threaded studi having a collar within the flange and a knurled head," an internally threaded sleeve Within the body and the hand piece and engaged by the threads of the shank and the stud, means for retaining the sleeve against longitudinal movement, and a conn ectiomcausing, the sleeve to be rotated by the hand piece, forwardrotation of the stud causing'the hand piece to engage the'body and interlock.

Intestimony whereof I aflix my signature in presence of twovwitnesses.

' LUIGI CAPPABIANCO. Witnesses: g

H. W. MEADE, E. M; OULvER.

Washington, D. 0'.

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