US639243A - Wrench. - Google Patents

Description

` No. 639,243. l Patented Dec. I9, |899.

, F. c. JAEGER.

WRENCH.

I (No Mot-lei.)

lines.

Y llnrrnn STATES PATENT unica.

FRANK C. JAEGER, O F BELVIEW', MINNESOTA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 639,243, dated December 19, 1899.

Application filed .Tuly 31,1899.

To @ZZ wtoli't trim/ y conce/rn.-

Be it known that I, FRANK C. JAEGER, a citizen of the United States, residing at Belview, in the county of Redwood and State of Minnesota, have invented certain new and useful Improvements in Wrenches; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide a simpliiied and improved wrench capable not only of use as an ordinary wrench, but adapted for use in many places and under many conditions where an ordinary wrench would be ineiicient or inoperative.

To these ends my invention consists of the novel devices and combinations of devices hereinafter described, and dened in the claims.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Figure 1 is a view in side elevation showing my improved wrench, some parts ot' the same being broken away. Fig. 2 is a plan view of the said wrench with som'e parts broken away. Fig. 3 is a plan view of the nut-socket removed from the wrench and with the coperating pawl indicated by dotted Fig. 4 is a transverse section taken on the line m4 m4 of Fig. 2, and Fig. 5 is a side elevation of the reversible ratchet-pawl.

The body ci the wrench consists of a headsection 1 and a handle 2,pivoted to the said head-section 1 at 3. The outer end of the head-section 1 :is provided with a seat or perforation 4, that extends through the same on an axis that extends at an angle of ninety degrees to the aXis of the pivot The nut-socket 5 is provided with a sleeve or shank portion 6, which tits the seat 4 in the wrench-head 1. The nut-socket 5 is provided, preferably at each end, with angular recesses 7 and 8, which are adapted to it the corners or angles of nuts that differ considerably in size. For example, the angular recess 7will t two sizes of nuts, and the recess 8 will fit two other sizes of nuts. Thus the wrench is Serial No. 725,622. (No model.)

adapted for use on nuts varying greatly in size. i

The so-called nutsocket 5 is formed with an adjacent pair of reversely-extended series of ratchet-teeth 9 and 10, and for cooperation with these ratchet teeth or wheels a driving pawl or dog 11 is pivoted to the wrench-head 1 by a pivot-bolt 12, which pivot-bolt is itself rigidly held from turning in the said wrenchhead by a pin 12'. At its opposite ends the pawl or dog 11 is provided with reversely-offset teeth 13 and 14, which are adapted to engage and cooperate, respectively, with the ratchet teeth or wheels 9 and 10 oi': the nutsocket 5. The nut-socket is held in working position, but is free to rotate within the seat 4 of the wrench-head 1 by means ot' screws 15, which, as shown, have screw-threaded engagements with the said wrench-head ],and the inner reduced ends of which work in an annular channel 16, formed in the said nut` socket.

The pawl or dog 11 is yieldingly held in either one ot' its two set positions by means of a spring 17, which spring is suitably secured, asat 18, in the head of the pivot-pin 12 and is provided at its free end with a nose or projection 19 and is adapted to engage with either one of a pair of notches 20, cut in the intermediate portion of the said dog or pawl 11. When the dog or pawl 11 is set as Vshown in Figs. 2 and 3, the tooth 14 thereof will engage the ratchet-teeth 10 of the nut-socket 5, and the spring 17 will yieldingly hold the said tooth 14 in engagement with the said ratchetteeth 10. To reverse the action of the wrench, so that it may be used to unscrew a right-hand nut or to screw up a left-hand nut, the spring 17 is slightly raised and then engaged with the other notch 2O of the said ratchet dog or pawl 11.

The wrench above described is very easily manipulated and is capable of use under almost all circumstances and conditions. The handle 2 being pivoted to the wrench-head 1, as illustrated and described, makes it possible to use the wrench on nuts that are so located that they could not be turned with a wrench having a straight or rigid handle.

It will of course be understood thatI do not limit myself to the construction-above specifically described, but, on the contrary, that the Wrench illustrated may be variously mod itied within the scope of my invention.`

What I claim, and desire to secure by Letters Patent ofthe United States, is as follows: 1. In a wrench, the combination with a handpiece or body of a n Lit-socket rotatively mounted therein and provided with a pair of reversely-extending series of ratchet-teeth or ratchet-wheels, and a spring-pressed ratchet pawl or do;T pivoted at its intermediate portion on said handpiece or wrench-body and provided wit-h offset teeth at its free ends adapted one for engagement with one series and the other tooth for engagement with the other series of the said ratchet-t eeth or ratchetwheels, substantially as described.

2. In a wrench, the combination with the wrench-head l, ofA the nut-socket 5 rotatively mounted iu said wrench-head and provided with the reVersely-extended series of ratchetteeth 9, 10, the reversible ratchet pawl or dog 11 pivoted to said wrench-head 1 and provided with the offset teeth 1S and 14 and the pair of'notches 20, and the spring 17 engageable, at will, -with either of the said pair of notches 20, substantially as and for the purposes set forth.

In a Wrench, the combination with a wrench-head 1 and handpiece 2 pivoted thereto at 3, of the nut-socket 5 rotatively mounted in said Wrench-head l and provided With the reversely-extended ratchet-teeth 9 and 10, the reversible ratchet dog or pawl 11 pivoted to said wrench-head 1 by the ixed pin 12, said pawl or dog having the offset teeth 13 and 14, and the spring 17 secured to the head of said pin 12 and provided with the nose 1S) engageable with the notches 2O of said pawl or dog 11, substantially as described.

4. In a wrench, the combination with the wrench-head 1, of the nut-socket 5 rotatively mounted in said wrench-head, and provided with the inversely-extended ratchetteeth 9, 10, the cooperating pawl or dog 11, pivoted on said wrench-head and provided with the offset teeth 13, 14, and the handpiece 2'pivoted to said, head at 3 ou an axis transverse to the axis of said nut-socket 5 and always free for pivotal movement, substantially as described.

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

FRANK C. JAEGER.

Witnesses:

A. O. GIMMESTAD, JAMES BUNN.

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