US112109A - Improvement in wrenches - Google Patents

Description

'the movable jaw and lock it to the work when thrust me ELIAS BEACH, or TITUsvrLLE, PENusrLvANIA.y

Letters Patent No. 112,109, dated February 2,8, 1871.

IMPROVEMENT IN wR-Eivcui-ua's.

The Sc'hedule'referred tain these Letters Patent and making pai-blot'4 the saune.

-known as.pipe-wrenches,and in which .the movable jaw is operated by a pivoted lever-handle ;4 and It consists in arranging and supporting the movable jaw and its cogged shank between guides of the fixed jaw` dj ustiug devices, for the purposeof allowing the mt able jaw to be adjusted at different angles to suit diii'erent sizes of pipes without ,inter-v fering with the opening and closing movement oi' the jaw, the said adjusting devices also serving t clamp desired.

Figure l represents a5 section of -a pipe-wrench embracing my improvement.

Figure 2 represents awrench having a different form of jaw.

In the accompanying drawing- The iixed jaw A is made with a stock, B, which forms guides O for the -movable jaw D, and supports for the adjusting devices. v l

The movable jaw D is of the nippel' form, and its shank hascogs a to interlock with the cogs bV of the pivoted lever E.

This lever is pivoted to the rear end of the guides (l, and the cog'ged shank F is held in gear with the ccgged end ot' thelever E by means ol' a roller, G, also secured between the guides C.

The adjusting devices in the instance represented consist of two screws, H and I, passing through the. stock B -and guides O, so as to touch and sustain the movable jaw D in whatever angle it may be adjusted by said screws, with .respect to the size ofA pipe and the point at which the Dipper-jaw is desired tor'bite thereon.

The points of the adjusting screws H andl I, while thus serving as guides to-the shank, serve also as pivots on which the Dipper-jaw is adjusted to increase or'diminish its distance from the stock B of the fixed jaw.

D will slide between them without the` least binding in putting the jaw on and taking it off from the work. They'also alordmeansfor clamping the jaw D and holding' it tightly in its bite upon the work, and thus afford opportunity for changing hands and-releasing the force upon the lever without releasing the bite of the jaw or 'allowing' it to slip over the work. l

The roller G holds the cogged jaw in connection with the 'cogged lever E, so that the jaw is opened and closed upon the work by the -same handle but, when desired to disengage the 'cogs b of- Athe lever E from those ofthe-shank, the former is simply turned at right augles,.or nearly so, to thev stock, and the biting-jaw can be moved in and out, as desired.

In tig. 2 of the drawing I have shown acogged jaw adapted to embrace and hold the pipe by.a grasp, and whichis operated by a direct motion.` of the lever without adjusting devices, and in which the graspingjawcan'be removed and others substituted for dilferent sizes of pipes. Y

Having described my invention,

l.V The combination of the movable jawD with the guides() of the fixed jaw A andthe adjusting devices H and I, as described.

2. The combination ol' a` movable cogged jaw D, made adjustable, as described, with the cogged lever-l handle ll, holding-roller G, and stock B C, ol' the iixed jaw A, as described.

3. The fixed jaw A, having a stock, B C, arranged to form guides U to the movable jaw-D, supports for j the adj listing-screws H l, and for thc actuating-lever E, as described. i

In testimony whereof I have hereunto signed my name.

ELIAS BEACH. Witnesses:

A. E. H.V JouxsoN, J. W. Hanni/rox JOUNSON.

These bearing points are so arranged that the jaw

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