USRE2575E - Improved composition foe hoofing and other purposes - Google Patents

Description

I goiter: [tetra gaunt ffi IMPROVEDOOMPOSITION FOR ROOFING AND OTHER PURPOSES.

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'lO ALLWHOM 'I'l MAY OONCERN: Be it known that I, REES B. SMITH, of Mount Pleasant, in the county of Jefferson, and State of Ohio, have made a new and useful Composition for Roofingand other Purposes; and I do hereby declare the following to be a full, clear, andexact description of the nature of the some suifioient to enable one skilled in the art to which it is allied to make and compound the same. The principal ingredients in the compound consist of a mineral found in some abundance in the county of Jefferson and somevadjoining counties in the State of Ohio, and which is locally known as Smiths mineral. This substance is ground into fine powder and mixed with coal tat in about the p'roportions of five parts mineral andtwoparts tar. From one to fifteen per cent. of carbon oil'may be substituted for a portion of the tar, and

.these proportions may be slightly varied so long as the composition/ismade to retain such a plastic character as to he readilybrushcd on to a surface, or'spread thereon by a trowel. The mineral which forms the base of i the compound is a reddish brown ferruginous earth, of about the weight of an ordinary quality of iron ore, is insoluble in water, fusible at a high heat, and is found by analysis to consist as follows: silica, 37-.35; peroxide of iron, 7.50; alumina, 12.70; lime, 4.98; magnesia, 10.31; carbonic acid, 15.25; water,12.00=100.09, which may he expressed as hydrons'silicate of iron and alumina, G9.55; carbonate of lime, 8.98; carbonate of mag nesia, 21.65=100.18. This mineral being ground, is mixed with coal tar, and the composition is spread by a brush or trowel in a thin coating upon the surface of thereof, whether the latter consistsof shingles, boards, paper,,or cloth, and the material afiords a water-proof surface of suflicient tenacity to avoid. cracking under changes of the temperature. A covering ofsand rolled into the plastic material while it is yet moist, makes it more fil'G-flOOf, and the composition is useful for topping chimneys, lining cisterns, cementing stone, and also for pavements, when combined with gravel; also for other cementing purposes Where a water-proof, plastic, and

tenacious composition is useful.

. Having described my invention, what I claim therein as new, and desire to secure by Letters Patent, is-

The composition for roofing and other purposes, consisting of the ingredients in about the proportions described. p v

To the above Specification of my improved composition for roofing I have signed my hand this eleventh day of March, 1866. v

' REES B. SMITH.

Witnesses JNo. Beans, J osnru- HARRIS.