US1438647A - Cotter-pin extractor - Google Patents

Description

E. F. |VE$- COTTER PIN EXTRACTOR.

APPLICATION FILED NOV. 28. 1921.

1,438,647. Patented Dec. 12, 1922.

Pat nted Dec. l2, i922.

nnwrn FRANCIS IVES, OF WALLINGEORD, CDITNECTIDU'I.

CUTTER-PIN EXTRACT-0R.

Application filed November 28, 1921. Serial No. 518,408.

T 0 all 107mm it may concern Be it known that I, EowiN FRANCIS Ives, a citizen of the United States, residing at Walling'ford, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Cotter-Pin Extractors; and I do hereby declare the following, when taken in connection with the accompanying drawings, and the characters This invention relates to improvement in cotter-pin extractors, and particularly to extractors of the plier type. The obqect of this invention is to produce a cotter-pin extractor containing in itself duplicate parts, whereby the life of the tool is prolonged and providing a device by which cotter-pins may be firmly gripped and readily removed, and the invention consists in the construc tion as hereinafter described and particularly recited in the claims.

In carrying out my invention. I employ two handle-niembers ill) and 11. These are struck up from sheet-metal and are U shaped in cross-section, and in the folded edges each is :lormed with a series or? notches 12, Which provide a firm grip for the hand and fingers. fit their outer ent s, these handles are provided with curved bearing surfaces 13 adapted to rock one upon the other. lvlounted in the outer end of one of the handles are two fulcrum-plates 1i and 15 secured by a bolt 16. These inlcrum-plates are curved at their ends to form fulcrum-points 17. Mounted in the outer end 01 the other handle 11 is a pulling-plate 18 on a bolt 19, this plate being in the form of a bell-crank lever, one arm 20 being in the form of a pulling-hook, which may pass between the fulcrum-plates 14 and 15, the other arm 21. extending dowf.

ward between the fulcrum-plates l4 and 15, where it is held in place by the bolt 16, and serves to properly space the fulcrumplates, so that the hook 20 may pass between their outer ends. The plate is also formed with an arm 22, to which a spring 23 is attached, the other end or the spring being fixed to a bolt 24 extending through the handle 11. Mounted upon bolt 25., which passes through the outer end of the handle 10 and through the fulcrum-plates 14 and 15, and on each side oi the handle, are'plates 26 and EL-duplicates of the plate 18, these plates beingconnected to the opposite sides of the handle 11 by the bolt 24.

The tendency of the spring 23 is to separate the handles and. pass the hook 520 be tween the outer ends of the fulcrum-plates ii and 15, and in position to be inserted into the eye of a cotter-pin, the points 17 ot thefulcrum-plate providing a fulcrum orbearing, so that, when the handles are brought together, the downward movement of the hoolr with respect to the tulcrnms will extract a cotter-pin. It will be noted that the handles are so proportioned that their ends rock one upon the other, thus removing the strains which might be imposed upon a pivot if the handles were pivoted together.

By forming the handles with the notches 152, a firm grip is secured, and in case either of the tulwunrpoints break or become worn away, those fulcrum-plates l-land 1;") may be reversed side for side. or end for end. as each plate has four fulcrum-points. The hook 20 of the plate 18 is a part most liable to become bent or broken, and this plate 18 may be ext-hinged with either of the plates or 27,-thus three hooks are provided.

I, therefore, not only produce a tool specially designed for the purpose of extracting cotter-pins, but provide that tool with interchangeable renewable parts. This tool also becomes a combination tool, as a small nut or bar may be gripped between the edges 28 oi the handle 10, and the hooks of the plates 26 and 27; or a tube or rod may be gripped between the hooks 20 of the plates 26 and 27 and the edges 29 of: the handle 11, as there is a slight rocking movement of the plates Q6 and 27 with respect to the handle 11, which will be suiiicient to grip an article, or a tube or rod supported by the mounted between the sides of one handlemember, a hook-plate mounted between the sides of the other handle-member, said hookplate provided with a hook and with an arm extending downward between the said fulcrum-plates, plates arranged on opposite sides of the handle-members and connecting their outer ends, and a spring connected with a hookplate and with the handlemember in which it is mounted.

3. A cotter-pin extractor, comprising two handle-members formed from sheet-metal, U-sl1aped in cross-section and formed with notches in their outer edges, fulcrum-plates mounted in the outer end of one of the handle-members, a hook-plate mounted in the outer end of the other handle-member, said hook-plate coinprising a hook and an arm extending downward into engagement with the other handle-member, and plates correspondingto the hook-plate connecting the v said two handle-members.

In testimony whereof, I have signedthis speclfication 1n the presence of two subscribing witnesses.

E. FRANCIS IVES.

Witnesses:

FREDnRIo C. EARLE, MALCOLM P. NICHOLS.

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