US756565A - Wrench. - Google Patents

Description

No. 756,565. PATENTED APR. 5, 1904. T. H. BARRY.

WRENCH.

APPLIGATION FILED JUNI: 27,1903.

N0 MODEL.

A TTOHNE Y S.

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UNITED STATES Patented April 5, 1904.

THOMAS H. BARRY, OF EMPlRE, OREGON.

WRENCH. i

SPECIFICATION forming' part of Letters Patent No. 756,565,` dated April 5, 1904.

'Application ined June 27,1903. serai No. 163,344. (No model.)

To tl whom, it may concern:

Be itknown that I, THOMAS H. BARRY, a citizen of the United States, and a resident of Empire,in thecounty of Coos and State of Oregon, have invented a new and Improved Wrench, of which the following is a full, clear, and exact description.

This invention relates to a class of Wrenches havinga fixed jaw on the end of a handle-lever, a sliding jaw on the lever, and means for holding the sliding jaw at a selected point on the lever.

The object of the invention is to provide novel detailsof construction for a Wrench of the indicated class, Which afford a very convenient implement, capable of receiving instant adjustment, adapted for automatic closure, and which Will operate reliably at any point of opened adjustment.

Theinvention consists in the novel construction and combination of parts, as is hereinafter described, and defined in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in-Which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a perspective view of the improved Wrench. Fig. 2 is a longitudinal sectional vieW showing interior details. Fig. 3 is a perspective view of the slidable jaw and the adjusting-rack carried by said jaw, and Fig. 4 is a perspective View of a spring-dog that is a detail of the invention.

The lever 5, which is of suitable length proportioned to conform with the desired capacity of the tool, is rectangular in cross-section and at one end is provided with a lixed jaw 6, disposed transversely, as usual. A shank 5fL is formed on the handle-lever 5 by reduction of the Width of said bar,tha`t produces a shoulder ct thereon at a suitable distance from the end of the shank, which distance is preferably equal in length to that of the handle-block or grip-piece 7, which may be of Wood or metal.

A slidable jaw is furnished as a Wrench member complementary to the fixed jaw 6,

and comprises a jaw-limb 8 and a rectangular loop 8"', the opening in the latter beingof-suchdimensions and form as Will permit the body of the handle-lever 5 to fit loosely therein and adapt the looped jaw to slide on the lever -From the jaw-limb 8, adjacent 'to the rectana gular loop 8, a rack-bar 9 extends at a right angle to the Working face of the jaw, and upon "u the edge of the rack-bar opposite the one which contacts with the handle-lever when the parts of the Wrench are assembled a series of c is formed to receive the shank 5 a, that litsneatly therein, and it will be seen that when the shank is fully inserted into the handleblock the shoulder a Will impinge upon the inner end of the handle-block and the end of the shank become flush With the outer end of the handle. It may here be explained that if the handle-block is of hard Wood a Washerplate l() may be embedded in one side thereof, having holes formed therein at proper points for the passage therethrough of screws or rivets (Z, that also pass through alined perforations e, formed in the shank 5 and the handle-block` and when inserted serve to secure the handle upon the shank of the handlelever 5- In the handle-block 7, parallel with and adjacent to the longitudinal aperture c, a passage c is formed, this passage being adapted to receive the portion of the bar 9 Whereon the teeth b are formed. The passage c' does not extend entirely through the handle-block 7, but aords a chamber c2, extending from the inner extremity of the rack-bar 9,v Wherein a coiled spring' l2 is placed. Two studs g g are formed, respectively, on the inner end of the rack-bar 9 and the end Wall of the chamber c2, these studs entering the ends of the spring 12, so as to hold the latter in position for the exertion of direct pressure on the y rack-bar, which will be forced by the spring toward the fixed jaw 6, so as to impinge the jaw 8 thereon, this occurring when the spring is permitted to expand freely.

The preferred means for detachably securing the jaw 8 at any point of retracted adjustment consists in the provision of a springdog, which, as .shown in Figs. 2 and 4, consists of a preferably curved resilient arm 13, fitted upon the handle-block 10, whereon it is secured by one end, as shown at h in Figs. 1 and 2, said arm at its opposite end having a toothed dog 14 projected laterally therefrom, which loosely occupies an opening z', formed in the handle-block opposite the rack-teeth b.

rIhe set of the spring-arm 13is such that the dog 14 is normally pressed toward the teeth b on the rack-bar 9 and engages its teeth b between the teeth opposite which it mayY lie. On the end -of the arm-13 adjacent to Ithe dog 14 a catch-lip 'In is formed, that is shaped for convenient manipulation to press it outward, and thus remove the teeth b from engagement with the rack-teeth b, as indicated by dotted lines in Fig. 2. y As shown in Fig.

2, the jaw -limb 8 projects at its free end slightly beyond the adjacent end of the fixed jaw 6, so as to provide an offset fn.

When the wrench is to be adjusted to engage an object, such as a screw-nut or the head of a bolt between the jaws 6 and 8, assuming that the slidable jaw is in closed adjustment; the wrench .is grasped by its handle 7 and the slidable jaw at the offset n is pressed upon a fixed object-such, for example, as a nut that the wrench is to be adjusted to receive between its jaws. Pressure is now applied simultaneously with the manipulation of the catchlip m for release of the dog 14 from the rackteeth Z2, whereupon the jaw 8 will be pressed away from the jaw 6 a desired distance, thus compressing the spring 12. Then a release of the catch-lip will permit stress of the springarm 13 to press the teeth b of the dog 14 into engagement with the teeth b on the rack 9, and thus lock the rack-bar and jaw thereon at a desired point of retracted adjustmemnt.

As the teeth b b are parallel on their sides when they are engaged, a positive lock of the jaw 8 is effected, sothat the wrench may be used with full effect for turning an obj ectwith which it may be engaged.

Obviously the release of the dog 14 by manipulation of the catch-lip m will permit stress of the spring 12 to expand and force the jaw 8 into contact with the jaw 6 or into closed condition.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The combination with a handle-lever having a fixed jaw at one end, and a shank at the opposite end that is reduced in width aording a shoulder, of a jaw mounted to slide upon the handle-lever, a rack-bar extended from the slidable jaw and having teeth on one edge near its free end, a handle-block apertured to receive the shank and abutting against the shoulder thereon, means for securing the handleblock upon the shank, said block having a longitudinal chamber therein which receives the toothed portion of the rack-bar, a resilient arm attached by one end upon the outer side of the handle-block and projecting above the rack-teeth, a toothed dog on the free end of the resilient arm adapted to mesh with the lteeth on the rack-bar, and means for manual release of the dog therefrom.

2. The combination with a handle-lever havy ing a fixed jaw on one end, and a shank on the opposite end thereof reduced in width, affording a shoulder, of a slidable jaw mounted upon the handle-lever and having its free end projected therefrom farther than the ixedjaw, a rack-bar extended from the slidable jaw and having teeth on one edge near its free end, said teeth having parallel sides, a handle-block longitudinally apertured to receive the shank of the lever and abutting upon the shoulder thereon, the handle-block and shank having a plurality of perform-ions, screws engaging said perforations, the block having a longitudinal chamber parallel with the aperture therein, said chamber at one end receiving the toothed end of the rack-bar, an expansible spring in the chamber, pressing upon the'end R. W. MARSHALL, ROBERT E. SHINE.

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