US780280A

US780280A - Sheave-block.

Info

Publication number: US780280A
Application number: US21312604A
Authority: US
Inventors: Herbert Gilley
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-06-18
Filing date: 1904-06-18
Publication date: 1905-01-17
Anticipated expiration: 1922-01-17

Description

IATENTED JAN. 1905.

VNiTnio STATES Patented January 17, 1905 lPr-TTILNT GFFICE.

SHEAVE-BLOCK.

SPECIFICATION forming part of Letters Patent No. I702550,28@ dated J' anuary 17, 1905.

Application filed Juno 18, 1904. Serial No. 213,126.

To all whom it may concern:

Be it known that I, HERBERT GILLEY, a citizen of the vDominion oi' Canada, residing at New Vestminster, in the Province of British Columbia, Canada, have invented a new and useful Improvement in Sheave Blocks, oi' which the following is a speciiication.

This invention relates to an improved sheaveblock designed to support the wire rope of a log-haul, in which work a block is exposed to very severe duty not only in the rough usa-ge to which it is generally subjected, but also in the wear to which the groove oiE the sheave itself is exposed from the wire rope and in the long-sustained friction which its axle-bearing has to endure. rIhese conditions render the use ot' an ordinary pulley-sheave prohibitory, as they are not designed for long-sustained or heavy work and wear out rapidly, and my improvements have been directed to adapting the design ot' the block to the use of material which will stand the rough treat-V ment and to the provision ot' the shoave-bearings in the side frames of the block instead oi', as customary, allowing' the sheave to run on a pin fixed in the side frames, by which change a greater bearingsuriace is provided and means for etlieient lubrication may be introduced which otherwise would not be attainable. In the development of this construction I am enabled to cast a sheave ot' white iron having a chilled groove on an axle oi' rolled steel, which forms a comparatively cheap combination ot' two materials eminently iitted to the character of the wear the parts are required to endure and which could not otherwise be obtained readily owing to the dii'liculty ot' machining the hard cast-iron. The construction by which I attain these results is fully set forth in the following speci tication, and illustrated in the drawings which accompany it.

Figure 1 is a vertical section through 'the pulley-frames and pulley; Fig. 2, a side elevation oiI the same, and Figs. 3 and 4 similar views of an alternative construction in which the design is modified to suit the requirements of the use of cast-steel for the sheave-i`rames.

In the drawings the sheave or pulley is represented by 2 and is oi' white iron east on a riphery ot' the sheave.

chill, with the axle 3, of rolled steel, in place, due care beingl taken to insure that the position ot' the axle is maintained true to the pe- In the design illustrated in Figs. l and 2 the side frames 4 are made of wrought iron or steel plate. The upper ends, through which the bolt 5 is passed, which connects the link or shackle by which the sheave-block is suspended to a post or convenient, tree are t'olded inward, as shown at 6, to better support the pin, and at the opposite or lower end the sides i are secured together by bolts 7, short sleeves 8 being provided as distance-pieces- On the outer side of each side plate toward the middle, bearingblocks 9, ot cast-iron, are riveted, and a hole large enough to allow an ample babbitt bearing 10 for the axle oi" the sheave is provided through the side plates 4f and the blocks 9. On the upper inner side of each bcaring-block a recess 11 is cored, so that when the block is riveted to the plate an oil-box is `formed conn municating with the bearing by an oil-hole 12. In use the oil-box may be iilled with waste, which will retain the oil and prevent it running too freely through the bearing, and

with this provision a simple, comparatively cheap, and thoroughly el'iicient sheave-block is provided for log-hauling purposes adapted to the heavy work required from such without the continuous attention ior oiling and renewal which those in common use require.

The n'lodiiication shown in Figs. 3 and i is merely the adaptation ot' the same principles to the use cil cast-steel or similar material. The bearing-boxes 11,5, with the oil-boxes ll and the distancepieces, Snc., are cast in one with the side plates 16 and the conformation oi" the parts varied to suit such adaptation.

Having now particularly described my invention, I declare that what I claim as new, and desire to be protected in by Letters Patent, is-

1. A sheave-block having a grooved sheave with an axle-pin fixed therein; side plates ot' approximately rectangular `form iolded over inwardly at the upper ends to receive a pin for connecting the plates and suspending the block, means for connecting the plates at the lower end, and babbitted bearings secured on the Side plates having oil-boxes on their up- In testimony whereoflhavesigned my name per sides. to this specification in the presence of two Sub- IO 2. A sheave-hloek having a Chilled-groove scrbing Witnesses. A Sheave cast on its axle-pin, slde plates having HERBERT GILLEY.

5 babbitted bearings provided at their upper sides with oil-boxes and means for securing In presence ofthe plates together at the required distance, ELLICE VVEBBER, apart and for suspending the block. ROWLAND BRITTAIN.