US540409A - Pipe-wrench - Google Patents

Description

(No Model.)

E. J. STONE.

. PIPE WRENCH.

Patented June 4, 1895.

UNITED STATES PATENT OFFICE.

EDWARD J. STONE, OF WAVERLY, PENNSYLVANIA.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 540,409, dated June' 4, `1895.

Application filed March 7, 1825.

To LZZ whom; it may concern.'

Be it known that I, EDWARD J. STONE, a citi- `zen of the UnitedStates, residing at Waverly,

in the county of Lackawanna and State of Pennsylvania, haveinvented certain new and scribed.

The' annexed drawings, to which reference 1s made, fully illustrate my invention, in whichl Figure l isa side view of my pipe-wrench. Fig. 2 is an edge view. Fig. 3 is a view of the edge opposite that shown in Fig. 2.

Referring by letter to the accompanying drawings, A, designates the main bar or handle of the wrench,to the end d of which is secured one of the pipe jaws b having the usual teeth c. Thisjaw b has a bifurcation, into which the upper end a of the main bar A is secured by a transverse rivet d. The bar A, is also provided with an offset or bearing e to which is pivoted (at f) a movable jaw g comprlsin g two parallel plates h, h, between which 1s secured, by a rivet c', a toothed platej. These plates h h are twin plates and are provided with teeth lo, struck from an arc of a circle from the point of the pivot f, which teeth engage similar teeth Zon the extreme inner end m of a movable bar or handle n. This barnl is pivoted to the main bar by two oblique plates o, o; one on either side of said bars and said bar n is also pivoted to aplate p on either side thereof. To the opposite end of said plates 29,10, is connected the free end q of adat spring r, that is secured to the main bar, at s.

It will be seen from the above description, taken in connection with the drawings, that pressure upon the handles will cause the jaws to close and firmly grip a pipe, by the action of the teeth on the movable bar engaging the teeth k on the jaw plates.

In order to adjust the pivoted jaw to pipes of different sizes, the operator forces the mov- I claim, and desire to secure by Letters Patent, is-

srmno. 540,803. m0 man.)

operation, durable and at the same time cheap to manufacture.

Having thus described my invention, what l. In combination with the iiXed bar having the toothed gripping plate h, of the pivoted jaw, comprising two parallel plates pivoted to the offset e of the xed bar and provided with the gripping teeth j and teeth k, the movable bar having the teeth Z adapted to engage said teeth la, the plates o, o, pivotedat one end to the barA, and at the opposite end to the bar n, the plates 10J), and spring/r said plates piv- `oted at one end to `the bar n and at the other end to the spring; the latter secured at s to the bar A, substantially as described.

2. In combination with the xedjaw, and the bar or handle thereof, of a pivoted jaw having the teeth k, and the movable bar having the teethZ, engaging said teeth la, the plates o, o, pivoted both to the ixed bar and movf able bar, the plates p, p, pivoted to the movable bar and to the spring, secured to the fixed bar at one end and `to the plates p, p, at the opposite end, all substantially as described.

3. In combination withthe xed bar having the toothed gripping plate, of the pivoted jaw, comprising two parallel plates, riveted to one 9 5 another, at i, and pivoted to the oifset or bearing e and having the teeth k, the movable bar fn, provided at its end with teeth Z, engaging said teeth 16,76, and the pivoted plates o, o, connecting the two bars A, n, to one another roo and the pivoted plates 19,1), connecting the upper end of the bar n to the spring and the spring r, secured at s, to the bar A all substantially as described.

In ,testimony whereof I affix my signature :co5 f in presence of two witnesses.

EDWARD J. STONE. Witnesses:

PAEDON B. STONE, DEXTER SINSABAUGH.

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