US337528A - Waterproofing cloth - Google Patents

Description

JAMES H.

SHELDON, OF ZANESVILLE, OHIO.

WATERPROO FlNG CLOTH.

SEPBGIFICATION forming part of Letters P5..ent No. 337,528, dated March 9, 1886;

Application filed September 1;), F85.

To all whom it may concern:

Be it known that 1, JAMES H. SHELDON, of Zanesville, in the county of lvluskingum and State of Ohio, have invented certain new and useful Improvements in Waterproofing Cloth, of which the following is a exact description.

The object of this invention is to provide an improved method of waterproofing cloth made wholly or in part of wool, by the use of which the cloth will be made impervious to water without having its color ati'ected or being injured in any way.

The invention consists in the method of waterproofing cloth hereinafter fully described, and then claimed.

In carrying my invention into practical effeet I put a quart of hot soft water in a vessel, then add a half-ounce of gum-arabic and a half-ounce of fine table-salt, (rock-salt is preferred,) and heat the mixture until the gum-arabic is fully dissolved. The solution is then poured into a vessel containing three quarts of hot soft waer in which fourteen ounces of the best alum has been dissolved, and the mixture is thoroughly stirred. The

cloth to be waterproofcd is then immersed in this solution until saturated, is well handled and aired for about twelve utes, and is hung up to five or thirty minutes.

or fourteen mindrain for twenty- The cloth is then full, clear, and.

Serial .\'o.177.l-7 (No specimens.)

again immersed in the hot solution for six 0 eight minutes, and is again hung up for abou six or eight minutes. The cloth is then in niersed for six or eight minutes in a warm st lution of one ounce of Spanish whiting an four ounces of the best prepared chalk dis solved in a gallon of hot soft water. Tl". cloth is then well handled and aired, and hung up to dry, care being taken to hang smooth. The cloth when dry is well brushe with the nap, and is ready for market or us or, if desired, the cloth can be pressed at finished in the same manner as other cloths.

The invention can be applied to cloth in tl web or to cloth made into garments.

Having thus described my invention, I clai as new and desireto secure by Letters Patent- The method of waterproofing cloth here set torth,which consists in saturating the 010 one or more times in a hot solution of gut arabic, table-salt, and alum dissolved in h soft water,-then handling and airing it, th hanging it up to drain, then saturating t cloth in a warm solution of Spanish whiti and preparrd chalk, then handling and airi it, and then hanging it up to dry, all substz tially as described.

JAMES H. SHELDON.

Wit nesses:

HOWARD AsToN, r MARGARET SLoAN.