US286021A - Pulley-block - Google Patents

Description

(No Model.)

P.- KING.

PULLEY BLOCK. No. 286,021. Patented Oct. 2, 1.883.

UNITE FFICFW PULLEY-BLOCK.

SPECIFICATION formingpart of Letters Patent No. 286,021, dated October 2, 1883. Application filed May 31, 1883. (No model.)

To all whom it may concern.-

Be it known that I, PETER KING, a citizen of the United States, residing at Springfield, in the county of Clarke and State of Ohio, have invented certain new and useful Improvements in Pulley-Blocks; and I do declare the follow ing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the acconr panying drawings, and to the letters and fig ures of reference marked thereon, which form a part of this specification.

My invention relates to pulley-blocks.

My invention relates to that class of pulleyimprovements in blocks which are used with a single sheave to fold awnings, and to elevate loose fibrous substancessuch as hay or straw-when applied to hay-carriers.

The object of my invention is to prevent the folds of cloth in an awning, or the hayor straw when used in a hay-carrier, from being drawn into the block by the rope passing over the sheave. To accomplish this I construct the block in. a peculiar manner, witlra guard OX- tending over the face of the sheave, on one side, from end to en fthe same. Below the axle of the sheave ea thi'oathole, having an extended lip to give the inrunning rope a smooth bearing, and to shut off anyloose substances which maybe drawn up with the pulicy-block.

Figure l is a vertical section of a pulleyblock embodying my improvements. Fig. 2 is a view of the pulley-block entire from the open side, corresponding with the right side in Figs. land 3. Fig. 3 is a side elevation of the pulley-block with the rope applied to the same.

A is the pulley-block, and B the sheave, which is pivoted upon a pintle or axle, 7), extending through the checks of the block A, in the usual manner, from side to side. Thegeneral configuration of the block A, viewed in side elevation, as seen in Fig. 3, is that of a flat ellipsoid, with an incurvation at the lower end, on the right side, cutting away a portion of that shaped figure. The checks a of the block are connected over the face of the sheave B, on the left side, from, the point e at the eye end to the extreme point 0 below the sheave, only a throat-hole, I), being left therein, as seen in the figures. The web a, which thus con. nccts the cheeks a, forms much the longest side of the block, it being made with a lipextension, (9, to allow the throat-hole Z) to be made as low down as possible, in order to guide the inrunning rope (I as nearly straight upward as is practicable, or as near the central longitudinal line of the block as the sheave will allow. It the figures that in raising a weight the roped is always run in one direction, as indicated by the arrow in Fig. 3, the construction of the block conforming to this mode of operating it. The eye 6 at the top of the block differs in no respect from that used in ordinary suspensionblocks, and maybe changed to a hook with.- out materially changing theinv'ention. The

' web to forms a guard to prevent any loose fibrous substance from being drawn into the swallow of the block through the throatehole F).

In operating the block for the purpose of elevating the hay, straw, or other like sub stances which are mowed away in the barn or stacked in the field, the block is suspended in the position shown in Fig. 3, the rope run ning, as shown, and any portion of the straw or hay which may be clinging to the rope when the block is used either with a hay-fork or Sl11lply with a hook, and the rope (Z looped around the bundle of hay to be lifted, will be prevented from entering the hole 6, and thence into the swallow of the block, by that portion of the web a surrounding said hole, and particularly by the projecting lip c, which will have a tendency to divide the lock of hay which clings to the rope and burst the interlocked straws or fibers of the same asunder and cause it to drop again to the ground, as the closing of the entire left or up-run side of the block (a, except where the rope enters I),

effectually prevents any lodgment of the hay upon the block. In using my invention as an awning-block it is suspended with the closed side a upward. In this position its operation in preventing the folds of theawning from be ing drawn into the swallow would be entirely prevented by the web-connection a, and the awning-folds would be carried upon or over that part of the block, as the rope extends unwill be noticed by reference to der the awning from the front of the building outward to the front bar of the awning-frame.

I claim as my invention- I 1. A pulley-block having its cheeks connected upon one side by a web, through which is formed a throat-hole for the passage of the rope inward over the sheave, said throat-hole being below the axis of the sheave, substantially as and for the purpose hereinbefore set forth.

2. A pulley-block having one of its sides closed over the face of the sheave, and provided with a hole through said closed side,

'whereby the rope is directed in a line parallel with the central longitudinal line of the block in running over the sheave, and hay or other like loose substance elevated by the rope is prevented from entering the swallow of'the pulley, substantially as set forth 3. Block A, having the web a, connecting the cheeks a on one side of the same, and extending from the eye 6 to the point 0, and provided with a throat-hole, I), having an extended lip, 6, said throat-hole leading into the swallow of the block, for the passage of the rope d upward over the sheave B, substantially as and for the purpose set forth.

4. The combination, with the sheave B and its pintle b, of the block A, having its cheeks a, connected by the web a from the eye to the lower extended end 0 on one sidewith a throat-hole, b, therein, and having the other side open, substantially as and for the purpose hereinbefore set forth.

In testimony whereof I affix my signature in presence of two witnesses.

- PETER KING.

VVitnesses-z B. O. CONVERSE, THos. STRONG.

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