US143496A - Improvement in nail-extractors - Google Patents

Description

J. CAPEW ELL.

Nail-Extra'mrs.

Pgtenied om. 7. 187s.

No. MBAQ.

UNITED STATES BURY, CONNECTICUT.

PATE QEEIGE.

GEORGE J. eAPEwELL, 0E oEEsHrEE, AssrGNoE To ELI oUETiss, oE wATEE- Town, Ann noUGLAss E. MALTEY AND LEwIs J. ATwooD, or wATEE-l `uvlPRovEn/IENT IN NAIL-EXTRACTORS.

Specification forming part of Letters Patent No. 143,496, dated October 7, 1873; application filed l April 11, 1873.

To all whom t may concern:

Be it known that I, GEORGE J. CArEwELL, of Cheshire, in the coimty of New Haven and State of Connecticut, have invented a new and useful Improvement in Nail-Extractors; and that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings and to the letters of reference marked thereon, making a partof this specification.

This invention is in the nature of an improvement in nail-extractors operated by percussive force; and the invention consists in a nail-extractor of such kind, constructedso as to be more simple, durable, and effective than nail-extractors heretofore made.

The invention more particularly relates to nail-extractors constructed substantially in accordancewith Letters Patent granted to me on the 16th day of July, 187 2 but in the nailextractor described and shown in said patent the whole of the percussive force was received on a plug screwed into the lower end of a hollow cylindrical stem; and since, in the course of time and with continued ramming,7 this plug might become detached and the instrument rendered useless, the object of this present invention is to obviate any liability to such an accident, and also to so ax the spring by which the movable jaw is actuated in such position that its accidental disarrangement is rendered impossible. The spring for like purposes in my said Letters Patent having been exposed, it was peculiarly liable to accident; and my present invention is in respect to this spring an improvement upon the nail-extractor described in said Letters Patent.

In the accompanying sheet of drawings, Figure l represents a side elevation of my nailextractor, partly in section; Fig. 2, a side elevation of iixed jaw; Fig. 3, a side elevation of movable jaw with fulcrum; Figs. 4 and 5, detailed views of spring 5 and Fig. 6, an edge l View of extractor, showing the position of the parts in the several figures.

A represents the rammer proper of my extractor, the ball B andupper projection C of which are of solid metal. The lower projection D is a hollow cylinder or of tubular construction. E is a solid cylindrical stem made from steel orother similar material, and of a diameter that will admit of its freely entering into the cylindrical projection l). The

lower end of the stem E has formed upon it a fixed claw, c, and has pivoted to it, by a pivotal bolt, b, a movable jaw, c, one side of said jaw being curved and extended and forming a fulcrum, d. Between these two jaws, and around the pivotal bolt b, is placed a circular spring, f, made from spring-wire. This spring iits into recesses g and g formed in the inner faces of each of said claws, and is held in position between said claws by bending the ends of said spring in opposite directions, as shown in Fig. 5, the bent ends forming projections, which are received into small recesses 7L h formed in said claws for that purpose, the object of this spring being to restore the movable claw to its normal or open position after tlie extractor has been used. p

My nail extractor being constructed substantially as above described, its operation is as follows: The claws are placed immediately over a nail-head, so that the nail-head will come between said claws. The rammer A is then raised to its full extent, which extent is regulated by a check strap, F, one end of which is secured to the stem E, and the other to the tube D, and the rammer is then brought down with a quick ramming motion, bringing the upper end of the stem E in contact with the solid ball B, this motion forcing the claws slightly into the wood surrounding the nailhead, so that when the extractor is bent over in the direction of the fulcrum d the claws will grasp the nail, and enable it to be extracted in precisely the same manner as is described in my said Letters Patent of July 16, 1872.

It will be seen from the foregoing that the spring f actuating the movable jaw is entirely concealed, and out of the way of accidental displacement, and that no amount of ramming can disarrange `any part of the stem E or its jaws.

I hereby disclaim the reissued Letters Patfaces of which are recessed to receive a circuent granted GEO. J. OAPEWELL for improved lar spring for holding the jaws apart, in oomnail-extraetor, bearing` date, originally, the bination With a tubular Weighted ralnlner selth day of July, 1872, and numbered 129,210. cured to the stem, substantially as described.

Having thus described my invention, What GEORGE J. GAPEWELL. I claim as new, and desire to secure by Letters Patent, is- Witnesses:

A nail-extractor having its stem provided H. L. WATTENBERG,

with a stationary and movable jaw, the inner G. M. PLYMPTON.

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