US799678A - Insulating material. - Google Patents

Description

1 UNITED STATES PATEN T ()FFIOE.

INSULATING MATERIAL.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed November 28, 1904. Serial No. 234,515.

To all whom, it m,a, z concern.-

Be it known that I, DOMINIOK W. SHARKEY, a citizen of the United States, residing at Wakefield, borough of the Bronx, city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Insulating Materials, of which the following is a specification.

This invention relates to insulating materials, particularly forheat insulation and heatinsulating coverings, and has for its object the utilization of waste or refuse material in the production of such an insulating material or compound.

The waste or refuse material which I employ is that discarded in the well-known Solvay soda-ash process. This waste material exists in great quantities in the neighborhood of the works at Syracuse, State of New York, where the Solvay process has been carried on for many years, and is usually in the form of a moist and somewhat chalky mass, which dries to a powder. It flows from the works in fluid condition, and this fluid condition is gradually changed to that of the moist and chalky mass of which these great deposits are composed. An analysis of an undried mass freshly dug from this deposit shows the folvlowing substances present in about the following proportions: silica, 0.6386; iron and aluminium, 0.4102; calcium oxid, 29.4006; magnesium oxid, 0.7007; carbon dioxid, 16.0246; sulfuric anhydrid, 0.4269; chlorin, 0.1019; sodium, 0.0560, and water 52.2405. Thesesubstancesareprobablyprincipallycombined as follows: silica, 0.6386; iron and aluminium, 0.4102; calcium carbonate, 34.667 9; calcium hydrate, 12.8017; magnesium carbonate, 1.4714; calcium sulfate, 0.7257; sodium chlorid, 0.1679; free water, 49.1166. In the making of my insulating material I mix this refuse with fibrous material and have employed as such fibrous material asbestos or mineral wool in the form of asbestos fiber and in the form of asbestos cement. This refuse mass may be taken in the wet and deposited condition in which it is found and directly mixed with the asbestos, with slight, if any, addition of water, and after a thorough admixture has been had the material or mixture may be dried, preferably by subjecting it to a moderate heat. can be varied to suit requirements; but I have employed a mass of asbestos fiber with about an equal bulk of the soda-ash refuse. If the soda-ash refuse has been permitted to dry before admixture with the asbestos, it is necessary to moisten the mass with water to bring it to a plastic or mortar-like condition before performing the mixing operation.

Where it is desired to apply the insulating compound in a mass directly upon the pipes or other surfaces to be insulated, it may be applied in such moist condition after the admixture has been made and before the mass has been permitted to set, and when the mass is permitted to dry or moderately heated to facilitate its drying it will acquire in drying a coherent and sufliciently hard condition to fully answer the requirements of such insulating coverings. The drying operation, which with theunmixed soda-ash refuse would produce merely a dry powder, produces in this admixture a firmly set, hard, and coherent mass.

The admixture of soda-ash refuse and asbestos may be molded into anydesired shape or configuration and dried and may be put upon the market in such conditionas, for example, in sectional coverings and blocks or masses of insulating material.

I have also produced the insulating material by admixture of commercial asbestos cement with the soda-ash refuse and find that such material measurably possessesthe desired properties. It is obvious that in carrying my invention into practice and in producing insulating-coverings for the various uses in which such material may be employed the relative proportions of the asbestos and sodaash refuse may be varied, and various modifications may be made in the details of manu- The proportions employed facture within the principle and scope of my invention.

What I claim as new, and desire to secure by Letters Patent, is

1. An insulating material composed of a mixture of fibrous material and the deposited waste product of the Solvay soda-ash process, waste product of the Solvaysoda-ash process,

substantiallyas set forth. substantially as set forth. I 2. An insulating material composed of a 1 In testimony whereof I have aifixed my Sig mixture of asbestos and the deposited Waste nature in presence of two Witnesses.

product of the Solvay soda-ash process, sub- DOMINIGK W. SHARKEY. stantially as set forth. Witnesses:

3. An insulating material composed of a mixture of asbestos fiber and the deposited HENRY D. WILLIAMs, 1 HENRY BARNES.