US1169007A - Wrench. - Google Patents

Description

W CHADWICK.

WRENCH.

APPLICATION FILED OCT. 3|, 1914.

Patented Jan. 18, 1916.

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WRENCH.-

. Specification of Letters latent. Pat t J n, 18, 15 16,"

Application filed October 31, 1914. Serial No. 869,627.

To all whom it may concern:

Be it known that I, VVALLAon CHAowIoK, a citizen of the United States, residing at Schenectady, in the county of Schenectady,

and State of New'Yorlnhave inventedcertain new and useful Improvements in renches; and I do hereby declare the following to be a full, clear, and exact descrip tion of the invention, suchas will enable others skilled in the art to which it zipper 11, and this body is provided with the centains to make and use the same.

This invention relates to new and useful improvements in wrenches, and has for its principal object to provide a wrench which may be used as a substitute for the usual ratchet wrench.

Another object of the invention is to provide a wrench of the above character in which the necessity for using the usual pawl and ratchet is eliminated.

A further object of the invention is to increase the gripping power of the wrench and provide a device which may be actuated from any angle.

lVith these and other objects in view, the invention consists in the novel combination and arrangement of parts which will be fully set forth in the following specification and accompanying drawings, in which,

Figure 1 is a view partly in section of a wrench constructed in accordance with this invention, the handle partly broken away, Fig. 2 is a vertical sectional view taken on line 22 of Fig. l, and showing the nut engaging member in full, Fig; 3 is a detail per spective view of one of the cover plates, and Fig. 4: is a view of the removable jaw.

Referring now to the drawings by characters of reference, the numeral 1 designates the handle of the wrench provided at one end with the enlargement 2. This enlargement is provided with a central, circular aperture 3 in which the rotatable jaw member is mounted. A suitable recess A extends angularly into the portion 2 and communicates with the aperture 3 through the reduced bore 5. A suitable recess 6 is formed in the enlargement 2 in direct alinement with the central axis of the handle 1, and the bottom wall of this recess is inclined as at 7 for a purpose which will be more fully hereinafter described. A suitable recess 8 extends in a plane parallel to the horizontal axis of the aperture 3 and is formed in the enlargement 2 at a point so that it comes intermediate the upper and lower terminals of one of the end walls of the recess 6. This recess 8 communicates with the recess'6 and is arranged to receive the mechanism which will be more fully hereinafter described. I p

The rotatable aw, which is designated by the numeral 9 comprises the circular body 10 having formed therein the peripheral groove tral hexagonal aperture 12 which is arranged to fit the nut upon which the device is used. The sides of the enlargement 2 surrounding the recess 6, are depressed as at 13 and arranged to receive the cover plates 14; which are shaped to fit the depressions and curved as at 15 to conform to the contour of the aperture 3. A suitable screw-receivlng aperture 16 is formed in each of' the cover plates near one end and is arranged to re ceive the screw 17 which holds the plate in place. A suitable slot 18 is formed transversely of the plate near the opposite end and this slot is arranged to receive the trunnionsof the roller which will be more fully hereinafter described.

The roller above mentioned is arranged to rest in the recess 6 so that its periphery bears against the inclined wall 7 and the point diametrically opposite said wall is arranged to face the opening of the recess. A suitable retaining pin 19 is arranged to bear against the roller to force the same toward the reduced end of the recess and a suitable spring 20 is arranged to bear against the head of the pin and the screw 21 to force the pin against and into engagement with the roller.

A suitable pin 22 extends through the aperture 5 and the head of said pin bears against the spring 23, which spring is held in place in the recess 4 by means of the screw 24 and is designed to force the end of the pin inwardly and into the groove 11 to retain the jaw member 9 in place.

In order that the wrench may bev made to fit nuts of different sizes, there are provided a plurality of removable jaw members 25 which comprise the bodies 26, which bodies are provided with the central recesses 27 in which the nuts are arranged to rest. A suitable hexagonal extension 28 is formed on each body and is designed to fit within the,

tion.

hexagonal recess 12 in the jaw member 9 so as to provide a Wrench which is capable of being used for nuts of different sizes.

It will be apparent from the foregoing that in use when it is desired to tightenor loosen a nut, the wrenchis placed in position according to the direction in whichthe,

nut is to be turned and upon pulling the handle in the proper direction it" will be 2113-" parent that due to the inclined wall 7 the 7 roller will engage the periphery of the jaw member 9 and thereby lock the same against movement in one direction. Upon twisting the handle in the opposite direction it will be apparent thatthe roller will disengage the periphery due to the inclination of the wall 7 and upon reversing the movement the gripping action will again'take place, thus rotating the jaw member in but one direc- In this way it will be clearly seen that a particularly simple and efficient wrench is provided which will eliminate the necessity of using a pawl and a ratchet mechanism and the roller clutch is provided to effectively act as a substitute therefor.

While in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that such changes may be made in the combination and arrangement of parts as will fall within the spirit and scope of the invention as defined in the appended claim.

What is claimed is: A wrench comprising a handle, an enlargement formed on one end of said handle,

said enlargement provided with a central circular aperture therethrough, a recess formed in said handle and communicating with said opening, a jaw member rotatably mounted within the apertureof the handle, a roller provided with trunnions on opposite sides WALLACE CHADWIGK. Witnesses: V

HERMANN F. KLING, MARTIN Snrcrs.

' Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C.

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