US739895A - Wrench. - Google Patents

Description

PATENTED SEPT. 29, 1903.

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NO MODEL.

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THE NURS PETERS C0 PNOTO LITRO. VM HINGTON D C 'UNITED STATES Patented September 29, 1903.

PATENT OFFICE.

JOHN ERNSI` MELCHER, OF WISNER, NEBRASKA.

SPECIFICATION forming part of Letters Patent No. 739,895, dated September 29, 1903.

' Application filed March 26, 1903. Serial No. 149,713. (No model.)

To all whom, it may concern:

Be it known that I, JOHN ERNST MELCHER,

a citizen of the United States,residing at Wis-- ner, in the county of Cuming and State of'v Nebraska, have invented anew and useful Wrench, of which the following is a speciication.

This invention relates to certain improvements in wrenches, and more particularly to that class known as socket-wrenches, being especially designed for removing round cylindrical or semispherical bodies, such as horseshoe-calks, nuts, and the like.

The object of the invention is to provide a simple, inexpensive, and efficient device of this character provided witha tapering socket adapted to -accommodate articles of various sizes, the article being firmly wedged between the inclined side walls of the socket, permitting the same to be removed without scarring or otherwise mutilating the work.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended, it being understood that various changes in form, proportion, and minordetails of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

In the accompanying drawings, Figure lis a perspective view of a wrench constructed in accordance with my invention. Fig. 2 is a vertical sectional view of the same. Fig. 3 is a transverse section, and Fig. 4 is a detail perspective of the removable jaw detached.

Similar numerals of reference indicate corresponding parts .in all the iigures of the drawings.

l designates the wrench, which may be formedof metal or other suitable material, provided with a body portion 2, having upwardly-extending integral forked arms 3 terminating in a squared shank 4, adapted to receive the correspondingly-squared socket of a brace or similar tool and by means of which the wrench is rotated. The body porwallf of the socket.

tion of the wrench is provided with a socket 5,having inclined or tapering side walls 6 and 5o '7, the side Wall 7 being rounded at its ju ncture with the front and rear end wallsfas clearly shown in Fig. 3 of the drawings. A removable jaw 8, provided with serrations or teeth 8' and having inclined or beveled end 55 portions 9, rests against the inclined side One of the beveled ends of the jaw itsin a correspondinglyshaped recess 10, formed in the enlargedportion 11 of the front wall, the opposite end of 6o the jaw bearing against the rear end wall of the socket, being removably secured therein by means of a set-'screw 12, passing through a threaded opening 13 in the rear wall of the socket and engaging a recess in the inclined end of the jaw.

In use the enlarged end of the socket is placedlover the nut, horseshoe-calk, or other body to be operated on and the wrench moved laterally, causing the serration or 7o teeth on the' jaw 8 to engage the nut and firmly wedge the same between the inclined walls of the socket, after which a brace or other tool is appliedv to the shank and the wrench rotated.V

From the foregoing description it will be seen that I have provided an exceedingly simple, cheap, and eective wrench, capable of elfectively gripping round or cylindrical bodies, and being provided with a removable 8o gripping-jaw I can by renewing said jaw upon its becoming worn make an old wrench as good as new.

While I have shown and described the wrench as being particularly adapted for removing round or cylindrical shaped nuts, it may also be used with equally good results on the ordinary square nut and also for disconnecting pipe-sections and the like.

Having thus described the invention, what 9o Iclaim, and desire to secure by Letters Patent, is-

l. In a wrench, a socket member having a tapering opening, one of the "end walls of. said opening being thickened and provided with a recess, a removable serrated jaw forming one of the side Walls and fitting within In testimony that I claim the foregoing as 1o the recess and means for locking the jaw in my own I have hereto affixed my signature. position.

2. In a Wrench, a socket member having a tapering opening, recesses formedin opposite l walls thereof, a removable serrated jaw heid In presence oftherein and provided at one end with a notch CHARLES L. SIECKE, or recess and a locking-screw carried by the J. II. J OCHUM, Jr. Wrench and engaging said recess. l

JOHN ERNST MELO-HER.

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