US154622A - chard - Google Patents

Description

STILLMAN IL STO RY AND RICHARD J. CHAJ tl), OF BROOKLYN, ASSIGNORS TO CHARD 8t BOWELUBRICATING COMPANY, OF NE7 YOR-l(, N. Y.

IMPROVEMENT IN LUBRlCATlNG COMPOUNDS.

Specification forming part of Letters Patent No. hifififififl, dated September 1,1874; application filed i April 28, 1514.-

110 all whom it may concern:

Be it known that we,StrrLLMAN II. S'roRY.

and RICHARD J. Osman, both of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in .Lubricat ing Compounds, of. which the following is a specification: 1

This invention is designed to provide a lubricant which will combine, in an unusually high degree, the property of lubricity with that of great cohesion of its particles,-whereby'the.

tion with those of the others to produce the result desired.

' In the production or manufacture of our im? proved lubricating compound we take, say, twenty pounds of beef or muttontallow, which, aside from its smooth or lubresoent nature, is characterized by hardness; seven pounds of parafiineoil, having its well-known limpid and solvei'itproperties, which prevent the gummiug of fixed oils or fats with which it may be mingled; one pound of neats-foot oil, favorably known for its permanence, combined with great fluidity; and one pound of castor-oil, which, as a lubricating substance, is ascertained to possess great smoothness, united with comparative \-'iscosity',. when subjected to even a moderate increase of temperature from friction. Taking'these oleagi'nons materials, each having its distinctive properties, as described, I melt them together in a suitable vessel, and commingle them by any appropriate means. of a solution of causticpotash, which may be prepared in the manner hereinafter set forth. I then stir the whole together until the caustic alkali, by uniting with a portion,'and a portion, only, of the other materials,-tbrms a saponified substance, which commingles with the To the mass I add'two pounds rest, giving a certain homogeneity to the whole, without in any essential degree modifying the characteristic of each element, which, as hereiubeforeindicated, gives it an advantage as an element in a lubricatingcompound designed for use under a wide variety of conditions and requirements.

As thus constituted, our improved lubricant will be found adapted to all ordinary'uses, witha greater efiiciency in the reduction of friction, a greater permanence against dissipation by heat and pressure, and agreater freedom from gumming or thickening than has hitherto been secured in compounds designed for the same or similar purposes.

In certain cases, where the journals,'steps, or thelike to be lubricated are very light, or are run under very moderate pressure, the quantity of tallowmay be: reduced, say, ten 'per cent; and when the reverse is the caseviz.,th-e journals are extremely heavy or run under extreme pressure-the quantity of tall'ow may be increased by, say, ten per cent.

We propose, in practice, to add to the mass, in quantity, as hereinbefore specified, say,one ounce of nitro-benzole, whereby any rank or noxious odor that otherwise might prove objectionable in the use of the lubricant, is nullified or destroyed.

The solution of potash hereinbefore. referred to may be made by boiling one pound of common crude potash in eight gallons of water, and adding thereto three pounds bydrate of lime, the lime removing the carbonic acid from the-crude potash, and, being precipitated, leaving the potash in solu-tionin a caustic condition. 4

What we claim as our invention 1s-- The improved lubricating compound com posed of beef or mutton tallow, parafline-oil,-

forth.

STILLMAN H. STORY. 'It. JHUHARD. \Vitncsscs:

A. M. EDWARDS, JAMES A. WHITNEY.