US1896266A

US1896266A - Load block

Info

Publication number: US1896266A
Application number: US544231A
Authority: US
Inventors: White William
Original assignee: Euclid Crane and Hoist Co
Current assignee: Euclid Crane and Hoist Co
Priority date: 1931-06-13
Filing date: 1931-06-13
Publication date: 1933-02-07
Anticipated expiration: 1950-02-07

Description

Feb. 7, 1933. w. wHlTE 1,896,266

LOAD BLOCK Filed June 13, 1951 INVENTOR /3 V" ,a M @wf 'ff 049% ATTORNEYS Patented Feb. 7, 1933 Unire arras WILLIAM wirrrn, or naar cnnvniann, cino, assrsnon ro riannuonrn onalvnl rarer y oFFIca fsa HOIST COMPANY, (3F EUCLID, (1E-HO, A` CRPORATION 0F OHIO Y LOAD BLOCK Application led June 13,

This inventionrelates to load blocks for hoists, cranes and like apparatus, the function of such a load block being to provide connection between the hook of the app tus and the sheaves of the hoisting cables thereof whereby the hook may receive support from the sheaves.

It has been the general practice in the that the hoolr is in dependent relation to the sheaves, and as these parts have some preciable dimensions it follows that maximum lift is reduced by this amount.

Itis the object of this invention to provide an arrangement whereby the hook is between,

instead of below, the sheaves so that the available lift of the hook may be substantially that of the shea-ves.

The exact nature of this invention together with further objects and advantages thereof will be apparent from the following description taken in connection with the accompanying drawing, in which Fig. 1 is a plan view of an embodiment of the invention; Fig. 2 is a sectional elevation as in the plane of line 2 2, Fig. 1; and Fig. 3 is an end view.

l/Vith reference now to the drawing, the principal members of the load block are the frame 1, hook 2 and sheaves 3, a pair of the latter being shown.

The frame is of generally arched form comprising a pair of leg` portions 4 with a transverse or bridge portion 5 therebetween. The frame includes the webs and flanges shown to provide against breaking down of its arch under the stresses imposed thereupon, as will be appreciated by one familiar with the art.

Particularly the bridge portion of the frame is provided with the upstanding flanges la and horizontal web l?) connecting the base portions thereof to provide a typical section of U-shape. Y

The hook 2 is generally of conventional form, disposed between the legs of the frame, with its shank portion 6 secured with the central arch portion thereof to be dependent from the latter as indicated Fig. 2. The manner of securement includes the usual thrust bearing 7 immediately above the open- 0 ing 6a in the frame through which the hook ies'i. serial No. 544,231.

shank 6 passes, whereby the-hook may swivel; andthe bolt 12 turned `onto Jthe hook shank.

t will be observed that this hoolr securing means does not project abovev the frame, ,Y being located in the cavity provided bythe v5 lll-characteristic of the frameat this point.4

For each of thelegportions 4 ofthe yframe is provided a sheave. pin 8. The frame is provided with aligned openings into which the sheave pins are fitted and there welded as at 9, with portions ext-ending from the hookV and beyond l the frame as indicated Fig. 3. l

The sheaves 3 are mounted on the projecting portions of the pins 8 and there secured 55 for free rotation as by the washers 10 and Cotter pins 11.

rEhe frame is provided on each side with a guard ange 13 extending about and beyond the corresponding sheave for protection of the latter and its cable 14; the flanges 13 being interrupted by notches as at 15 to clear the sheave cables.

By the arrangement described it will be apparent that the frame is in straddling relation with the hook, the sheaves being laterally disposed one at either side of the 1 hook, so that the latter is substantially at the level of the sheaves instead of considerably therebelow as heretofore. Moreover, Vthe Y' frame does not extend substantially above orY below the sheaves, nor does the hook securing means project above the frame. In fact Y frame, sheaves and hook arel all so disposed as to be substantially coextensive in vertical l'a5 dimension. Thus it will be apparent that the lift of thehoolr is substantially coincident with that of the sheaves themselves. Also by the described arrangement either sheave may be removed without dist'urbing either 90 its .cable or the other sheave. Atthe same time each cable is secured on its sheave by the guard flange provided.

What I c-laim is: I

1. A load block for the purpose described comprising a vframe of generally arched form, a hoolr disposed between the legs of the frame and secured with the central arch portion thereof yto be dependent from the latter,VV

and a Vsheave mounted on either leg of the "'100 l es frame, said frame central portion being of U'section, and securing means for said hook arranged in the cavity of said section.

2. A load bloc-lt for the purpose described comprising a frame of generally arched form, a hook disposed between the legs of the frame and secured with the central arch portion thereof to be dependent from the latter, and on either leg of the frame, a sheave pinset thereinto to extend from the hook, and a sheave mounted on the projecting portion of said pin.

3. A load block for the purpose described comprising a frame of generally arched form, a sheave mounted on either leg of the frame, and a hook disposed between said sheaves and secured dependent from the centrol arch portion of said fra-me, said hook being mounted for swivelling and said frame legs being spaced to permit said swivelling. In testimony whereof I hereby afix my signature.

' WILLIAM WHITE.