US1563242A - Wrench - Google Patents

Description

Patented Nov. 24, 19 25.

1 UNITED STATES PATENT OFFICE.

' JACOB M. TWEIT, F HOLCOMBE, WISCONSIN.

WRENCH.

Application filed May 27, 1924. Serial No. 716,232.

a full, clear, and exact description of the invention, such as will enable others skilled l in the art to which it appertains to make and use the same.

This'invention relates to wrenches, and has for one of its objects the provision of a device of this character which shall include a handle through the medium of which the jaws may be easily and quickly adjusted to fit bolt heads and nuts of different sizes, and through the medium of which the jaws may be constantly urged in the direction of each other during the turning of a bolt or nut so as to prevent any casual movement between the wrench and the part being turned.

A further object of the invention is the provision of a wrench wherein the jaws will be positively held against any relative axial or turning movements.

A still further object of the invention is the provision of a wrench which may be used to hold a bolt against movement during the application of a nut thereto or the removal of the nut therefrom.

With the above and other objects in view, the invention consists in the construction, combination, and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawing, wherein:

Figure 1 is a view in side elevation of a wrench constructed in accordance with my invention,

Fig. 2 is a sectional view taken on a plane extending centrally and longitudinally through the wrench,

Fig. 3 is a detail sectional View taken on the plane indicated by the line 3-3 of Fig. 2,

Fig. 4 is a detail sectional view taken on the plane indicated by the line H of Fig. 1

Fig. 5 is a detail Sectional view taken on the plane indicated by the line 55 of Fig. 2, and

Fig. 6 is a detail view illustrating a slightly modified construction of the jaws of the wrench. I

The wrench comprises a bar. 1 which is preferably of elliptical formation in crosssectionand which is provided at one end-- with an inner or relatively stationary jaw 2. The bar 1 is provided with a bore exv tendingthroughout the entire length there of and having a portion 3 ofelliptical formation in cross-section and a portions of cylindrical formation. The outer end of the cylindrical portion 4 ofthebore of the bar 1 is counterbored to provide a socket 5 in which the inner end of a hollow handle 6 l is rotatably mounted. A nut 7 is secured within the inner end of" the handle 6 by a screw 8 which due to its location withinthe socket 5 is held against accidental dis placement. I

A shank 9 of elliptical formation in cross section is slidably mounted in the'bore of end with an outer or relatively movable jaw 10. The shank 9 has a snug fit in the elliptical portion 3 of the bore of the bar 1 to prevent any relative lateral or rotary movements of the jaws 2 and 10. At its inner end, the shank 9 is provided with a "the bar 1, and it is provided at its outer reduced threaded stem 11 which passes freely through a washer or abutment 12 secured by screws 13 within the socket 5 inwardly of the inner end of the handle 6 and which passes through the nut 7 into the handle 6, the stem having screw-threaded engagement with the nut.

the cylindrical portion 1 of the bore of the A spring 14;, V which surrounds the stem 11, is mounted in rod 1 between the washer 12 and a washer 15 positioned upon thestem in contact with the inner end of the shank 9, and serves in conjunction with the handle 6 to prevent the jaws 2 and 10 from having any casual relative axial movements. To prevent the stem 11 from being disconnected from the handle 6 during the outward adjustment of the jaw 10, the stem is provided with a cotter-pin 16, at a point outwardly beyond the nut 7.

Preferably, the jaw 10 is provided with a smooth active face 17 and the jaw 2 with a toothed active face 18, the toothed active face permitting a firm j grip to be secured upon a nut or head of a bolt. Both jaws 2 and 10 are provided with flanges 19 which 9 are adapted to be inserted beneath thehead of a round-headed bolt when it is desired to use the wrench tor-the purposeof holding the bolt against turning movement while ap plying a nut to or removing it from the bolt.

The flanges 19 are located at corresponding sides of the jaws 2 and 10, and they extend beyond the active faces of the jaws, and their inner sides are inclined vastshown in nutengaging jaws 2 and 10. The pipe engagingjaws-ZF and 10 are provided'with toothed-arcuate active faces EZO'endMQl, re-

Speotively,

F rem the foregoing description, taken no connection with the accompanying draws ing,.it will be seen that the jaws are adapted to bed-adjusted through a-turning movement of the, handle. 6, and that owing thereto the jaws. may be readily adjusted and constantly urgedin the directionof each other while I i the wrench-1s 1111138. The spring l i'tunctions to prevent casual inward movement of the aw 10 andcasual rotationofthe handle 6. The flanges 19 onthe jaws 2 and a 10 adapt thewrenoh toruse as a bolt holder,

and when so used the flanges engage the inner side of the bolt head and the jaws engagev thenlateral sides of thebolt head. Ifa-i'terbeing applied to thehead of a bolt,

thewrenchis moved into contact with thev part adapted to prevent its rotation, both hands otthe operator will be left free to apply aanut to or remove it *from the bolt.

It should be understood that the drawing is merely illustrative and does not pretend to give exact proportions. Furthermore, the said drawing is illustrative of a preferred construction, it being my expectation that variousehanges and modifications may be made without departing from the spirit and scope of my invention.v

What is-claimed is A wrench comprising. a bar provided with a bore havingcircular and non-circular portions,-the outer end of the circular portion of thebore being enlarged to provide a socket, a shankof non-circular formation in cross-section slidably mounted inthe bore and provided fat its outer end with a jaw and at its inner end with a reduced screwthreaded store, an abutment removably secured within the socket, a spring located" within the bore between the shank and abutment, a hollow handle having ts nner end reinovably positioned in the socket in contact with the abutment, anut threaded on the stem and located within the inner end of the handle, and a nut-receiving element carried by the handle and engaging the nut and located within the socket.

In testimony whereof I affix my signature,

J AOOB M. TWEIT.

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