US1810006A - Wrench - Google Patents

Description

June 16, 1931. EDWARDS I 1,810,006

WRENCH Filed Nov. 16, 1929 INVENTOR A Edwards uuiz;

ATTORNEY l atentecl June 16, 1931 UNITED STATES ALBERT EDWARDS, 0F SACRAMENTO, CALIFORNIA, ASSIGNOR TO J". W. WOOLDRIIDGE, SAGRAJMIENTO, CALIFORNIA PATENT? OFFICE WRENCH Application filed November 16, 1929[ Serial No. 407,696.

This invention relates to wrenches of the socket type, my principal object being to provide an operating tool or handle unit for wrench sockets so arranged that a tool capable of adjustment to have the necessary great leverage to start the loosening or finish the tightening up of a nut is combined with one having the desired rigidity of movement for turning the nut on or off when the same is loose on its bolt or stud. Nut removing or replacing operations may therefore be carried out in a more efficient and rapid manner, and with the use of the one tool, than is at present possible.

A further object of the invention is to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purpose for which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claim.

In the drawings similar characters of ref erence indicate corresponding parts in the several views:

Fig. 1 is a side elevation of my improved tool in its preferred form.

Figs. 2 to 4; are similar views showing modified forms of the tool.

Referring now more particularly to the characters of reference marked thereon, and particularly at present to Fig. 1, the tool comprises a lower straight shank portion 1 of non-circular form on its lower end as shown.

at 2, so as to removably fit as usual into the hub of the nut engaging socket 3. At its upper end the portion 1 is provided with a right angle crank arm 4 which at its outer end is bent upwardly and parallel to the portion 1 to form a crank 5 of suflicient length to serve as a handle to be grasped by the hand of the operator. At its upper end the crank has swivel connection as at 6 with a somewhat upwardly angled arm 7, which normally overhangs and is in the same vertical plane as the arm 4.

At its outer end this arm is bent upwardly V to form another handle portion 8, parallel to the shank and positioned in a transverse 5, so that it also is in cranked relation to the shank. At its upper end the handle 8 is bent to form a short horizontal arm 9, disposed in the same plan-e as the arms 4 and .7.

From the outer end of the arm 9 an upper shank portion 10 projects upwardly in normal longitudinal alinement with the shank 1; said portion 10 being surmounted by a relatively turnable' knob 11. The swivel connection 6 is so arranged that the upper portion of the tool cannot be turned in an upward direction or inwardly of the crank beyond a position where the shanks 1 and 10 are in alinement with each other, but can be turned any distance in the opposite direction or outwardly of thecrank. v

By reason of this arrangement the upper portion may be turned about the swivel joint 6 as an axis and swung outwardly so that the knob is substantially in horizontal or transverse alinement with the swivel joint as indicated in dotted lines in Fig. 1. With said upper portion in this position the knob is sufliciently far to one side of the shank 1 so that great leverage may be exerted on the socket supported by said shank by the handengaged with the knob. A tight nut may be'thus readily started or given its final readily placed. or removed from locations which are more or less inaccessible to the ordinary type of wrench, since as will be seen the said upper portion being capable.

of being turned to assume various angles relative to the shank 1, it can be adjusted to avoid any obstruction in its way. When the upper portion is returned to its normal position the operator may turn the tool around necessary when the nut is still fairly tight,

or is to betightened up. If the hand is engaged with the crank 8 greater speed of rotation may more easily be had, since the movement'of the arm of the operator is correspondingly less than when the hand is enas v gaged with the crank 5, but of course the leverage is decreased also.

A great leverage however is not necessary when the nut is actually loose or so that it can 5 be easily turned on or off the bolt, and said crank 8 is particularly designed for this purpose. A two-speed wrench, in addition to one having a great leverage action is there fore provided. When the two-speed wrench feature is combined with the jointed handle as shown in Fig. 1 the angled arm 7 plays its part in carrying the second crank 8 out of the transverse plane of the joint parts so that the hand of the operator will not contact with the projecting edges of the joint as the Wrench is rotated.

If desired, the portion 10 may be very short. so that the knob 11 is close to the crank 8. This would permit the knob engaging the palm of the hand, leaving the fingers free to manipulate the said crank. A loose nut may therefore be easily turned with only one hand holdin the Wrench.

In the modification shown in Fig. 2 the construction is the same except that the crank 8 is omitted and the shank 10a extends continuously from the upper knob to the upper crank arm 7a. In the modifications shown in Figs. 3 and 4, the construction is the same as above except that the swivel joints 6a and 66 respectively are placed at the outer and inner ends of the lower crank arms 4a and at respectively. In both the latter forms the crank 8 has been-omitted but it could of course be incorporated in these designs if desired without affecting their modified construction in any way.

From the foregoing description it will be readily seen that I have produced such a de- 40 vice as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from such detail may be resorted to as 'do not form a departure from the spirit of the invention, as defined by the appended claim.

Having thus described by invention what I claim as new and useful and desire to secure 59 Letters Patent is:

A wrench comprising a tool tip and a main handle coaxial therewith, two eccentric handles connected to each other and to the tip and first handle by radius arms of different lengths, the radius arm between the eccentric handles extending at an obtuse angle thereto, and pivot connections between the outermost of said eccentric handles and said last named radius arm.

" In testimony whereof I aflix my signature.

ALBERT EDWARDS.

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