US3420A - Improvement in fire and water proof paint - Google Patents

Description

UNrTED STATES PATENT FFICEO JOSEPH WISEMAN, OF PHILADELPHIA, PENNSYLVANIA.

Specification forming part of Letters Patent No. 3,420, dated January 31, 1844,

To all whom it may concern:

Be it known that I, JOSEPH WISEMAN, of the city and countyotPhiladelphia, and State of Pennsylvania, have invented a new compound or pigment, whichl denominateAnti- Corrosive Indestructible Carbonic Paint and I do hereby declarethat the followingis a full, clear, and exact description thereof.

The nature of my invention consists in com bining the metalof carbon orpuritied graphite with caoutchoue and shellac, together with a small portion of acetate or sugar of lead, the ingredientsbeing mixed with linseed-oil and spirits of turpentine.

In making this pigment the ingredients are varied in their proportions according to the use to which it is to beappliedas, forinstance, articles that are continually inimersed in water, or alternately wet and dried, or that are exposed to the sun or the more intense heat of tire, receive a different coating. The carbon and. other materials are put into a mill and ground, together with a small portion of the oil and turpentine, till they form a perfectly homogeneous mass. There is then more of the oil and turpentine added, and it is spread like paint upon the article to be coated with it. The wood absorbs the caoutchouc, &c., which are impervious and would of themselves render.

it less destructible than any other process;

but when combined with the carbon-the most indestructible substance known in the mineral kingdom-the most perfect protection is afforded. Iron is also equally well preserved by it. When the pigment is exposed to heat less gum and more carbon are used, and vice versa. A I This composition is intended to preserve wood, iron, &c., from decay or chemical decomposition when exposed to Water, air, heat, or other destructive influences of greater or less intensity, the gums being absorbed by the substances to which the pigmentis applied,

I with only enough lefton the surface to attach the carbon and insure an al mostpurel y metallic coating, which adheres to the subjacent surject with great tenacity.

Wl1at I claim as my invention, and desire to secure by Letters Patent, is-

The combination of carbon or pure graphite withcaoutchouc and shellac, tcgetherwithacetate of lead, linseed-oi], and spirits of turpen tine, for the purpose herein set forth, forming a perfectly indestructible anti-corrosive pigment. It also serves the purposes of anti-attrition. v JOSEPH WISEMAN; Witnesses:

J. J. GREENOUGH,

J. H. GODDARD.