US374761A

US374761A - Edwaed stoem

Info

Publication number: US374761A
Authority: US
Publication date: 1887-12-13
Anticipated expiration: 1904-12-13

Description

(No Model.) E. STORM.

NAIL EXTRAGTOR. No. 374,761. Patented De c.'13, 1887.

HERE. I PhnibLimograplmr. Washington. D, (l

UNITED STATES PATENT OFFICE.

EDWARD STORM, OF POUGHKEEPSIE, NEW YORK, ASSIGNOR TO THE EDWARD STORM SPRING COMPANY, OF SAME PLACE.

NAlL-EXTRAGTO R.

SPECIFICATION forming part of Letters Patent No. 374,761, dated December 13, 1887.

Application filed May 16, 1887. Serial No. 238.328. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD STORM, of Poughkeepsie, in Dutchess county and State of New York, have invented a certain new and useful Improvement in Nail-Extractors, of which the following is a specification.

I will describe in detail a nail-extractor embodying my improvement and then point out the novel features in claims.

In the accompanying drawings, Figure 1 is a side view of a nail-extractor embodying my improvement. Fig. 2 is a similar view showing the parts in a different position. Fig.3 is another similar view showing the parts in still another position. Fig. 4 is a bottom View thereof. Fig. 5 is atransverse section thereof, taken at the plane of the dotted liner x, Fig.3.

Similar letters of reference designate corresponding parts in all the figures.

A A' designate the two jaws of the extractor. They are so constructed in the present example of my invention as to have rigid shanks a and resilient lower extremities, a. The shanks a may be made of any desirable meta]. The resilient portions a will, however, preferably be made of steel. The lower extremities are turned inwardly to grip a nail v securely. The jaws are to be so connected together that either may slide lengthwise relatively to the other. In the present example of my improvement I have shown this as effected by forming a dovetailed sliding joint between the shanks a of the jaws. The shanks of the jaws are provided with handles a by means of which either of the jaws may be adj usted lengthwise of e the other.

B designates a cam whereby the jaws may be moved toward each other, so that their ends will grip a nail. In the present example of my improvement the resilient parts of the jaws are adapted to move toward each other for this purpose by yielding to the pressure of the cam.

The cam B is pivotally connected to links 0, which are connected to the resilient portions of the jaw A by means of a pin, D. One of these links is arranged on each side of the resilient portion of the jaw A. The pin D passes through jaw A and through the links,

The pin D is of such shape'that it interlocks with the jaw A and with the links 0. It is shown as made square for this purpose. As it interlocks with the jaw A and the links 0, it prevents the links from swinging relatively to the j aw A. Theresilient portion ofthe jaw A passes between the links,and is adapted to slide easily between them and between the cam B. The cam B impinges against the resilient portion of the jaw A A pin, E, passing through the links 0 and through the cam B, connects the latter pivotally to the links. This pin is prevented from displacement by riveting-or upsetting its ends, or in any other suitable manner. The cam B is-provided with a foot-piece, b, and with two pins, 1) b". The pin 2) prevents the cam from moving so far as to impart unnecessary motion to the resilient portion of the jaw A The pin 1) prevents the cam from moving too farin the other direction, and keeps it constantly in position to operate upon the resilient portion of the jaw A 1 To operate this nail-extractor one of the jaws is forced down so as to indent itself into the wood adjacent to the head of the nail to be extracted, as shown in Fig. v 1. Preferably the jaw A will first be thus operated. Then the jaw A will be similarly driven down, so that it will indent itself into the wood adjacent to the opposite portion of the nail, as shown in Fig. 2. The extreme ends of the jaws are made quite sharp,so that they may easily be indented into the wood; but they are not madeso sharp as to be too weak to securely grip the nail.

The rigid portions of the jaws mayadvantageously be made quite thick and heavy, so

as to have weight enough to facilitate the in- 0 dentation of the jaws into the wood adjacent to a nail. After the nail has been embraced in this way the whole tool is rocked upon the foot-piece b of the cam B as a fulcrum or support. I have represented this action in Fig. 3. When thus rocked,the cam will be caused to force the jaws toward each other,so as to compel them to grip the nail. After the nail has been thus gripped the continued rocking of the tool will cause the jaws to pull out the nail.

This nail-extractor is exceedingly simple and very effective. Owing to the possibility of indenting each jaw into the wood adjacent to the nail by sliding the jaws relatively to each other, the nail may be much more effectively grasped than otherwise would be possible in all cases.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a nail-extractor, the combination of two jaws having their shanks connected together lengthwise by a sliding connection, a

cam, and a link for forcing the jaws together, substantially as specified.

2. In a nail-extractor, the combination of two jaws connected together by a tongue-andgroove joint constituting a sliding connection, a cam, and a link for forcing the jaws together, substantially as specified.

3. In a nail-extractor, the combination of two jaws connected together lengthwise by a sliding connection, and having resilient lower 25 portions, a cam, and a link for' forcing the jaws together, substantially as specified.

4. In a nail-extractor, the combination of two jaws connected together lengthwise by a sliding connection, a cam provided with a 30 foot-piece, and a link connecting said cam with one of the jaws, substantially as specified.

5. In a nail-extractor, the combination of the jaws A A the links 0, connected to one of the jaws, and the cam B, connected to the 35 other of said jaws, and provided with the foot-piece b and pins b b, substantially as specified.

EDWARD STORM.

Witnesses:

CHARLES B. HERRICK, HENRY E. LOSEY.