US1594844A - Hook - Google Patents

Description

Aug. 3 1926.

1594;844 A. R. M'ZARTHUR ET AL 7 BOOK v Filed April 1, 1926 3 Sheets Sheet 1 and $50 /-7 P041 7" Fdtiaesses: fnvend'omsv' T ETHUE ET N fierwue Aug. 3 1926. 1,594Qs44 A. R. MCARTHUR ET AL noox Filed April 1, 1926 3 sheets-sheet 2 0' Witnesses:

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' Aug. 3 1926. 1,594,844

A. R. MOARTHUR ET AL HOOK Filed April 1, 1926 3 Sheets-Sheet 3 Vwnesses: v l7wenforsi and FEED F. Pouz. v I n Aug. 3, 1925..

hairs v insane rant W ARTHUR lilcifitltTi-llliflijkl ll) FEED F. POLK, OE GARY, INDIANA ASSIGNORS TOAMLERI- CAN SHEET AND 'ELZN PLATE. COMPANY, OF PITTSBURGH PENNSYLVANIA, A (303- PORATION O33 HEX- T HOOK.

Application filedAprili 1, 1926. serial noxaao'os.

This invention relates to carrying hooks and more particularly tocarrying hooks particularly adapted for carryingtin plate and the like, and has for its object the provision of a hook of this class having a novel form of operating mechanism adapt ed to operate the hook members.

Another object of this invention is to provide a hook of the class described having the novel construction, design and combination of parts hereinafter described and illustrated in the accompanying drawings.

In the drawings:

Figure l is a side elevation of a hook constructed inaccordance with this invention.

Figure 2 is atop plan thereof.

Figure 3 is an end elevation thereof.

Figure 41 is a fragmentary side elevation of the upper portion of a hook embodying this invention, with part of the carrying frame broken away for the sakeof clearness.

Figure 5 is a fragmentary view showing the operating" cams in engagement with the lever arms of the hooks.

Referring more particularly to the drawings, the letter A designates the carrying frame of the hook mechanism as a whole which frame is composed of a pair of side bars 2 and end axle members 3 secured thereto.

Crank-shaped hook members 4 are pivotally mounted at their crank points, as at at, on the axles 3 at each corner of the frame A. The hook membersl each have one arm extending inwardly parallel with the side bars 2 and formingan operating lever arm, while the other arm 6 of each of the hook members extends downwardly forming article engaging arms which terminate in hooked ends 7.

The lever arms 5 0f the members 4, suspended from the opposite corners of the same side of the frame A, have their inner ends overlapped and one of the arms 5 is provided with a slot 8 to receive a pivot pin 9 carried by the other arm 5 so as to form a pivotal and sliding connection be tween the lever arms 5 of the pairs of members 4 on each side of the frame A.

The side rods 2 are each provided with a hearing lug l0 intermediate their ends in which a shaft 10 is journaled. The shaft 10 has a pair of cams 11 secured thereon and positioned to engage and depress the connected lever arms 50f the members at.

A pair of canrstop members 12ers eecured on the shaft 10 and providectwith projections 13 adapted to engage stopblo lrs' 14 on the side bars 2 to pre' t the rotation of the cams 11 beyond their highest point. p

The shaft lO is provided with handwheels- 15 at each end to provide for manual rotation thereof. i

A. suspension member or carriage composed of a crane hook plate 16 and substantially Ell-shaped carrier arms '17, isconnected to the lever arms 5 of the hook members l by links 18 which are pivotally connected to the end'sof the carrier arms 17 and to points intermediate the ends of the lever arms 5. i

In operation thehand-wheels 15 will be rotated to rotate the shaft 10 and cams 11 so as to force the'cams 11 todepress the lever arms 5 and thereby rock the hook members 4 about their pivotal connections l on the axles 3, and swingthe article engaging arms 6 outwardly sufficiently to clear the platesor'sheets to belifte'dl The hook will thenbe lowered" over thesheets or plates to be lifted, and the 'sha'ft'lOwill be reversely rotated to" move the" cams 131 in the reverse direction and permit the arms 6 to swinginwardly toward the sheets so that thehook members 7 will engage under the sheets.

The stop members 12 and 13 will cooperate to prevent the moving of the cams ll beyond their highest point and thereby prevent the arms 6dropping against the material being lifted.

VVhi'le. we have shown and described one specific embodiment of our invention, it will be understood that we do not wish to be limited thereto since various modifications may be made without departing from the scope of our invention as defined in the appended claims.

We claim:

1. A carrying hook mechanism, compris ing a substantially rectangular frame. a shaft extending transversely of and journaled in said frame intermediate the ends thereof crank-shaped hook member pivotally suspended from each corner of said frame, said hook members having one arm extendinginwardly parallel with the side members meats-e tending downwardly and terminating in a.

hook portion, said hook members on the respective sides of said frame having their lever arms connected together by combined sliding and pivotal connection, and means on saidv shaft adapted to depress said lever arms when said shaft is rotated to swing. said article engaging arms outwardly to clear the articles to be lifted.

2. A carrying hook mechanism, comprising a substantially rectangular frame, a shaft extending transversely of and jeurnaled in said frame intermediate the ends there of, crank-shaped hook members pivotally suspended from each corner of said frame, said hook members having one arm extending inwardly parallel with the side members of said frame to form operating lever arms and their other or article engaging arm extending downwardly and terminating in a hook portion, said ,hook members on the respective sides of said frame having their lever arms connected together by a combined sliding and pivotal connection, a suspension member adapted to be engaged by a crane hook. said member having a link connection with each of said lever arms intermediate their ends, and means on said shaft adapted to depress said lever arms to swing said article engaging arms outwardly to clear the articles to be lifted.

3. A carrying hook mechanism, comprising a substantially rectangular frame, a shaftextending transversely of and ournaled in said frame intermediate the ends thereof, crank-shaped hook members pivotally suspended from each corner of said frame, said hook members having one arm extending inwardly parallel with the side members of said frame to form operating lever arms and their other or article engagin arm extending downwardly and terminating in hook portion. said hook members on the respective sides of said frame having their lever arms connected together by a combined sliding and pivotal connection, a suspension meniber adapted to be engaged by a crane hook, said member having a link connection with each of said lever arms intermediate their ends, and cams on said shaft adapted to engage and depress said lever arms to swing said article engaging arms outwardly to clear the article to be lifted.

4. A carrying hook mechanism, comprising a substantially rectangular frame, a shaft extending transversely of and journaled in said frame intermediate the ends thereof,crank-shaped hook members pivotally suspended from each corner of said frame, said hook members having one arm extend ing inwardly parallel with the side members of said frame to form operating lever arms and their otheror article engaging arm extending downwardly and terminating in a hook portion, said hook members on the respective sides of said frame having their lever arms connected together by a combined sliding and pivotal connection, a suspension member adapted to be engaged. by a crane hook, said member having a link connection with each of said lever arms intermediate their ends, cams on said shaft adapted to engage and depress said lever arms to swing said article engaging arms outwardly to clear the article to be lifted, and stops on said frame adapted to limit the movement of said shaft and cams.

5. A carrying hook mechanism, comprising a substantially rectangular frame, a shaft extending transversely of and journaled in said frame intermediate the ends there of, crank-shaped hook members pivotal'ly suspended from each corner of said frame, said hook members having one arm extending inwardly parallel with the side members of said frame to form operating lever arms and their other or article engaging arm extending downwardly and terminating in a hoop portion, a suspension member adapted to be engaged by a crane hook, said member having a link connection with each of said lever arms intermediate their ends, and means on said shaft adapted to depress said lever arms to swing said article engaging arms outwardly to clear the articles to be lifted. c

r In testimony whereof, we have hereunto set our hands. V

ARTHUR R. MCARTHUR. FRED F, POLK.

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