US95706A

US95706A - Improvement in combined pipe-tongs and wrench

Info

Publication number: US95706A
Authority: US
Publication date: 1869-10-12
Anticipated expiration: 1886-10-12

Description

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vez. MCELHENY, 0E rrrfrsune, PENNSYLVANIA, AssteNoE 'ro EIMsELE, ERNEST FRANK,` AND JOHN B. ADT. f

Lette/rs Patent No. 95,706, dated October 12, 1869.

The Schedule referred to in these Letters Patent and making part of the same.

same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a longitudinal section of` the whole instrument Y 1 Figure 2, a similar view ofthe band and pawl; Figure 3, a transverse'section, made just in ii'ont of i* the band; and

Figure 4, atop or edge view.

This invention consists' in combining, with a main stem, having a fixed jaw at one extremity and a handle at the other, a movable jaw held by a band upon one side of said stem, `and a lever, with a sliding fnl-,

crum, for operating said movable jaw, upon the opposite side' of said stem, the several parts being so 'arranged that the closing of the handles fixes the sliding fulcrum and forces the Vmovable jaw forward toward the fixed jaw, the pin which connects the lever with the. movable jaw passing through an oblique slot in the latter, by which means the operator is enabled to graduate the pressure brought to bear upon the pipe or nut.

In the drawingsa is -the main stem, having a handle a', at one extremity, and a fixed jaw, a", at -the other.` l

lThe other-jaw eis movable, and slides on one side of a, being guided by a connecting-band, h, and actuated by a lever, c, the main portion of which is on the opposite side of the stem a, and is provided with two horns d o', between which the stem lies, and which are connected with the rear end cf the movable jaw e,`by a pin, i, passing through an oblique slot, g.

Said horns are also connected, by va pin, d, on the opposite side of a from the movable jaw, with a pawl, b, rigidly aixed Ato the lower part of ythe sliding band h, said pawl having teeth at its rear end and upper side. f

The stem a has corresponding teeth af in its lower side;

As long as the handles are open, the stem a" may be moved in its guide-way independent of the lever c.

The closing ot' the. handles brings the teeth b into connection with the teeth a', and thus fixes the fulcrum ofthe lever c.

The same movement throwsv the jaw e forward toward the jaw a, and against any object that may be placed between the jaws.

The oblique slot g enables the operator to exert more or less pressure in jamming the pipe or nut, according to the force with which he draws the handles together.

Having thus 4described my invention,

What I claim as new, and desire to secure by Letters Patent, isif The arrangement of the main stem a with `the movable jaw e, oblique slot g, pawl b, baud h, and lever c, substantially as described. 'I 1 -V. K. 'MOELHENY.

Witnesses:

OHAs. A. PETcrrr, SOLQN C. KEMON;