US791651A - Wrench. - Google Patents

Description

UNITED STATES Patented June 6, 1905.

PATENT OEEICE.

JOSEPH ROEM'ER, OF SANTA MARIA, CALIFORNIA, ASSIGNOR TO ROEMER 'REVERSIBLE LEVER TONG COMPANY, OF SANTA MARIA, CALIFORNIA.

WRENCH.

SPECIFICATION formingpart of Letters Patent No. 791,651, dated June 6, 1905.

Application filed October 18, 1904. Serial No. 228,301.

To alt whom it may concern:

Be it known that I, JOSEPH ROEMER, a citizen of the United States, residing at Santa Maria, in the county of Santa Barbara and State of California, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

This invention appertains to the type of wrenches embodying a iiexible grip and operating-lever, and has for its object tovprovide a, tool of this class which is readily reversible without necessitating its removal from the work and which will ratchet in either position and may be used on comparatively thin pipe Without crushing or indenting the same.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction 'of the means for effecting the result reference is to` pipe on the line m of Fig. 2 looking in the direction of the arrows. Fig. 4 isa detail perspective View of the removable jaw.

Corresponding and like parts are ireferred* to in the following description and indicated in all the views of the drawings by the same' reference characters.

The head of the wrench is approximately of triangular form and is preferably composed of companion plates l, spaced apart to receive between them the head of the operatinglever 2 and the end portions of ,a chain 3 or fiexible grip of desiredl construction. The

Wrench-head is notched in theface designed to receive the work, the notch or depression being approximately of V form, so as to prevent lateral displacement of the tool when tted to the work or pipe 4C.

5 The operating-lever 2 has its inner end widened, as shown at 5, and fitted between the plates or spaced portions of the'wrenchheadl and pivotally connected thereto by means ofthe bolt orv fastening 6. The operating-leveris adapted to be ad'justably connected to the head and for this purpose is provided with a series of openings, through one of which the bolt or pivot fastening 6 passes to connect the operating-lever and wrench-head. The terminal portion of the operating-lever is reduced, as indicated at 7, to admit of the flexible grip being connected thereto and yet not interfere with the wrench-head in the operation of the tool. vIn the lpreferable construction the flexible grip consists of a chain, although AanyV part capable of embracing the Work and conforming thereto may be substituted therefor." Thechain is preferred bei cause its links form, in effect, teeth which securely grip the Work and prevent slipping. Moreover, the links provide convenient means for varying the length of the grip accordingy to the size of the pipe, rod, or other work to be held. The hook 8 is pivotally connected at one end to the operating-lever, and the chain or flexible gripv 3 is attached at one end to said operating-lever and is designed to be adjustably connected near its Opposite end with the hook 8. The hook 8 and fiexible grip are connected to opposite end portions of the reduced part 7. Hence movement of the operating-lever upon the pivot connecting it with the wrench-head serves to tighten and loosen the grip of the chain 3 upon the work. When the operating-lever is moved to a position approximating a radius of the work, the grip is loosened and the wrench may be moved freely upon the work. When the operatinglever is moved away from a line corresponding to a radius of the work, the chain is tightened and the work gripped with a force proportionate to the power applied to the lever for turning the work either to tighten or loosen a screw-thread joint. The wrench may be used either as a` right-handed or left-handed tool and may be instantly converted from one to the other by changing the relative inclination of the operating-lever, as will be readily comprehended.

VIn some instances it 1s preferred to provlde 100 the wrench with a jaw 9, the gripping-face of which is made concave to conform approximately to the work, so as to obtain a close fit thereon. The jaw is provided with a Web l0, which is fitted between the plates of the wrench-head and secured thereto by pins or fastenings 11. It is the intention to provide diferent sizes of jaws 9 for diderent diameters of work. This jaw is used to advantage with light tubing or pipe and prevents crushing or indenting of the same and in conjunction with the iexible grip equalizes the grip-pressure upon all points. For rods or heavy pipe the jaw may be omitted, as the V-shaped notch or depression of the wrenchfhead forms a selfadapting seat for dierent sizes of work, as will be readily appreciated.

An opening l2 is formed in the plates 1 to receive a bolt or pin to act jointly with the fastening 6 to hold the plates in proper relation when the jaw 9 is removed.

Having thus described the invention, what is claimed as new is- 1. A wrench comprising'a head having an approximately V-shaped notch or depression in one face forming a seat to receive the work, an operating-lever pivoted a short distance from its inner end to said head to admit of reversing the tool without its removal from the work, and a iiexible grip connected to the inner end of the operating-lever upon opposite sides of a line passed lengthwise of the lever and through its pivotal support to admit of alternately loosening and tightening the grip upon oscillating the lever in either of its two operative positions, substantially as set forth.

2. A wrench comprising a head having spaced parts, a lever having its inner end widened and arranged between the spaced parts of the wrench-head and pivotally connected thereto, a hook loosely connected to an end portion of the widened part of the operating-lever, and a flexible grip connected to the opposite end portion of said widened part of the operating-lever and adapted to be ad justably connected with said hook, substantially as set forth.

3. A Wrench comprising a head composed of spaced portions, an operating-lever pivotally supported between the spaced portions of said head, a flexible grip arranged to operate in the space formed between the separate portions of the wrench-head and connected tothe operating-lever to be alternately tightened and loosened by an oscillatory movement thereof, and a jaw detachably fitted to the wrench-head and having a concave face to conform approximately to the work, substantially as set forth.

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

JOSEPH ROEMER.

Witnesses:

W. E. MrscALL, J. S. WEAR.

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