US954964A - Wrench. - Google Patents

Description

J. B. IRWIN.

-WRENGEL APPLICATION FILED 111111.26. 190s.

Patented Apr'. 12, 1910. 4

,77. 1dr /1 wi?? UNITED sTACQas PATENT oEEToE.

JE'ssE B. IRWIN, or WASHINGTON, PENNSYLVANIA.

WRENCH.

To all whom it may concern.'

Be it known that l, JESSE B. IRWIN', a citizen of the United States of America, residing at Washington, in the county of- Washington and State of Pennsylvania, have invented certain new and useful Improvements in Wrenches, of which the following is a specication, reference being had therein tothe accompanying drawing.

Thisv invention relates toy wrenches, and the invention has for its object to provide a simple and inexpensive wrench that can be easily and quickly adjusted.

My invention aims to provide a wrench with posit-ive and reliable means for quickly adjusting the movable jaw thereof, and after placing the jaw in engagement with a nut or similarlobject to minutely adjust the same to obtain a positive grip upon an object and prevent the wrench from slipping.

To this end, I rovide a wrench with an adjustable rack ar for moving the jaw thereof, and to adjust said rack bar, I utilize aiutdvhich is mutilated -or cut away to provide clearance for the rack bar, whereby said bar can be quickly adjusted, and then the nut moved-to minutely adjust said bar.

The construction entering into my invention will be'hereinafter described in detail and then specically pointed out in theappended claim, and reference will now be had to the drawing forming a art of this application wherein ythere 1s il ustrated the preferred embodiments of, my invention, but I would have it understood that the detail construction thereof can be varied or changed without departing from the spirit washer, and Fig. 8 is a cross sectional viewof the same. l

In the drawing, 1 designates a shank havl'ing the upper end thereof lprovided with a fixed jaw 2, while the=lower end of said shank is contracted, as at 3, and rovided with threads 4. The front side'of t 1e shank 1 is provided with a longitudinal groove 5",

Specification of Letters Patent.

Application med March 2e, 1909.

Patented Apr. 12, 1910.

serial No. 485,867.

said groove extending from the contracted portion 3 thereof to within a short distance of the fixed jaw 2 that end of the groove 5 1n proximity44 to the-jaw 2-having a curved lwith respect to said shank and adapte to receive the angular end 9 of a rack bar 10 slidably mounted in the groove 5 of the shank 11 designates a collar mounted upon the shank 1 intermediate the ends thereof, said collar having a vertical groove 11 adapted to register wlth the groove 5 of the. shank 1 and provide clearance for the'rack bar 10.

13 deslgnates a nut revolubly mounted upon the shank 1 beneath the collar 11, said nut having interior threads 14 for engaging the threads 15 of the rack bar 10. The threads 14 are mutilated 'or cut away, as at' 16, .to provide clearance for the threads 15 of the rack bar 10, whereby the jaw 6 and the rack bar 10 can be easily and quickly moved-relative to the shank 1. The'nut 13 is provided withV two dependin lugs 17 and` 18 adapted to abut against t e projection 19, carried -by a washer 20, located upon the shank 1 beneath4 the nut 13, said washer having.an opening 21 providing clearance for'the shank 1 and a vertical groove 22 providing clearance for the rack bar 10.

23 designates-'a handle mounted upon the lower end of the shank 1 for holding the washer 20 and the nut 13 in position beneath the collar 11, said handle being cut away as at 24 to provide clearance for the lower end of the shank 1 and the rack bar 10. The handle is retained upon the' contracted portion 3 of .the shank by a nut 25 screwed upon the threads 4. With the lug 18 engagingthe projection 19 of the washer 20, the'threds 14 of the nut 13 engage the threads 15 of the rack bar 10 and revent said rack bar from being rapidly shifted in the groove 5 of the shank 1. With the lug17 1n engagement withthe projection 19, the groove 16 of the nut registers with the rack bar 10' and provides' clearance for the threads thereof,

whereby said rack bar and the jaw 6 can be rapidly shifted u on the shank 1. To facilitate the manipu ation of ,the nut 13, said. nut is provided with -an enlargement 26,=

which can be used as a thumb piece.

It is thought that the utility and operation of my Wrench Will be fully understood Without further description, and I reserve the right to make the saine of strong and durable metal'vvith the handle of wood.

I'Iaving now described my invention what I claim as new, is :ba

A Wrench comprising a shank having a longitudinallyextending groove in one side thereof, a jaw fixed to said shank, a movable jaw upon the shank, a handle connected to the shank and provided with a groove opH posing the groove ofthe Shank, a stationary Washer mounted directly upon and provided With a groove registeringl With the groove in the handle, said Washer provided -with a right-angularly disposed peripheral projection, an adjustable rack bar mounted in the groove of the shank and connected to said movable jaw, a rotatable nut provided with a' peripheral thumb piece and mounted direetly upon said Washer, said nut having its threads out-away to provide a passage for the har when the latter is shifted and further adapted to engage the teeth of the bar for maintaining it in its adjusted position, a stationary Washer mounted directly upon the nut and provided With a -groove opposing the groove of the shank, and a pair ot depending lugs formed integral with the periphery of the nut, disposed at right angles with respect to each other and extending in the path of and adapted to engage .said projection whereby 'the rotativL-\ movement of the nut is limited in'either direct-ion.

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

JESSE B. IRWIN.

Witnesses S. N. BUsBEY, J. B. IRWIN, Sr.

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