US626350A - Stevedore s lifting-hooks - Google Patents

Description

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(Appliczinn med Jan. 2e, 1899.)

:No Model.)

bnc/osea INTED STATES PATENT OEEICE.

CHARLES M. TIFFANY, OF NEVV YORK, N. Y., ASSIGNOR OF TVVO-TIIIRDS TO TI-IE ATLANTIC STEVEDORING COMPANY, OF NEW JERSEY.

STEVEDORES LlFTlNG-HOOKS.

SPECIFICATION forming part of Letters Patent No. 626,350, dated June 6, 1899.

Application filed January 26, 1899. Serial No. 703,438. (No model.)

To all, whom t 11m/y concern: l the other end a deep notch or recess between 5o Be it known that I, CHARLES IWI. TIFFANY, stationary horizontally-projecting jaws C C.

a citizen of the United States, residing at the The shank of the hook thus formed is inborough of Brooklyn, in the city and State of wardly bent or bowed over and in the plane 5 New York, have invented certain new and of the jaws, so th'at the eyes or suspensionuseful Improvements in Stevedores Liftingrings are about on a line with the ends of the 55 Hooks, of which the following is a specificajaws. These latter are formed, preferably, tion, reference being had to the drawings acwith square edges in order to get a firmer grip companying and forming a part of the same. on a plate placed between them.

io The device which forms the subject of my The two hooks aresuspended generally by present application is primarily intended as short chains D D from a ring E, which is at- 6o a tongs or hooks for stevcdores use in lifttached to the hook of a pul1ey-block,al1oist ing heavy steel or iron plates when loading ing-chain, or the like. In using the device a or unloading vessels; but from the nature of workman raises slightly the edges of a plate 15 the improvement and the special use of t-he F with a crowbar and simply passes the jaws same hereinafter described it will be seen of the hooks over the said edges, as shown 65 that it has a wider range of usefulness as a in Fig. 2. Then a lifting force is exerted ready and convenient means of securing simithrough the chains D, the hooks, unless the lar heavy bodies to the ropes or chains of plate be exactlybalancedon them,willtightly 2o hoisting mechanisms. grip the edges of the latter and permit it to The usual method of handling heavy steel vbe raised, lowered, and handled without dan- 7o or iron plates on docks and railroad-platforms ger of its becoming detached. is to lift the plate, pass around ita chain with The plate is as readily detached from the a hook or ring at its end, and run the free end hooks when the lifting force is not exerted.

z 5 of the chain through the hook or ring before Having now described my invention, what suspending it from the pulley-block of a der- I claim isrick or hoisting mechanism. This primitive l. A lifting-tongs for heavy sheet-metal plan not only involves considerable manual plates, comprising in combination two hooks labor, but is unsatisfactory in that it is difi- .and suspension-chains to which they are at- 30 cult to get a good grip on the plate with the tached, the lower ends of said hooks having chain, while the plate orthe chain is liable to horizontally-extended jaws, adapted to pass 8o injury unless some special means are emover and gri-p the edges of ametal plate, and ployed to prevent slipping or thecutting of the shanks of the hooks being bowed or bent the links. To overcome this and to provide inwardly over and in the plane of the jaws,

3 5 a safe, ready, and simple means of attaching as herein set forth.

the heavy plates to the pulley-block or hoist- 2. The lifting device herein described, com- 85 ing-chain, I use two metal hooks of peculiar prising the two hooks each having an eye B conformation, which are suspended either diat the upper end, the suspension-chains D, D, rectly or by short lengths of chain from a ring connected with said eyes, the ring E to which 4o attached to thehoistingchain and which when said chains are attached, the said hooks havslipped over the opposite edges of a plate and ing rigid horizontally-extended jaws C, C, at 9o raised by the hoisting-chain will securely grip the lower end, adapted to pass over and grip and hold the plate. This device is illustrated the edges of a metal plate, and shank A, in the accompanying drawings, in which bowed or bent inwardly over and in the plane 45 Figure l is a side view of the two hooks of the jaws, as set forth.

and connections. Fig. 2is a perspective view CHARLES M. TIFFANY. showing the method of using the device. Witnesses:

A A are heavy iron or steel castings or forg- M. LAWSON DYER, ings, each having at one end an eye B and at G. W. MARTLING.

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