US71535A - pukdy - Google Patents

Description

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IMPROVEMENT IN LOOSE-PULLEY BOX.

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TO'ALL WHOMIT MAY O ONCERN:

.I Bye it known that I, G. PURDY, of Bedford, in the county of Cuyahoga, and in the State of Ohio,.havc invented certain new and useful Improvements in Loose-Pulley Box; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, .and to the letters of reference marked thereon. V

In the annexed drawings, making part of this specification, A represents a car-wheel, and D its hub.' Within this hub is cut a groove, which is annular in shape, and its outlines being designated by a; x. B represents a hollow cylinder, which is made of brass or iron or any, other suitable material, and provided upon its periphery with a groove to correspond with that withinrthe hub. This cylinder is ittcd or pressed into the eye or opening in the hub, and the two grooves coming opposite, arr oil-chamber, I, is formed. Small holes are-drilled through the cylinder B into the chamber I, so that oil can pass from said chamber to the axle. C represents the axle, which is fitted snugly in the c'ylinderfB. Withinthe cylinder B, near each end, are annular grooves H, and from these grooves, channels e e led to the oil-chamber I. The oil passes to the axle or bearing ,through the holes at the centre of cylinder B, and drips back agziin into chamber I from grooves H, through channels e c. a a represent pieces of wicking, which are placed in the chamber D for retaining oil and conveying it to the axle. J represents a p' e provided with a suitable cap which passes-through the hub into chamber I for introducing oil into' this chamber. The axle C may be sejcuredvin position in any secure manner, and may be provided with washers on each side of tlecylinder Bdtomhedep the oil from wasting. .This constru-cptnis equally applicable to all` cose pulleys, en diitlisforrthis purpose that I more particu arly design it. In that case A would repres sent the loose pulley/running upon its shaft Thvconstruction ofthe lubricating parts would he the-same, precisely, as those described. In this arrangement, it will appear evident that the pulley will retain oil for a long while, and that it will be thoroughly protected from dust and dirt.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

The cylinder B, provided with annular grooves z h, and openings e e, which lead into the chamber I, constructed as described, and having wicking a a, the whole constructed and operating in the manner and for the purposes described.

In testimony that I claim the foregoing, I have hereunto set my hand and seal, this 29th day of August, 1867.

1 O. PURDY. [L s] Witnesses:

A. H. TARBELL, L. TARBELL.

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