US701392A - Insulating-paint. - Google Patents

Description

. UNITED STATES PATENT FFIcE.

LEONARD M. RANDOLPH, OF NEWARK, NEYV JERSEY, ASSIGNOR OF SIX- TENTHS TO BANOROFT G. BRAINE AND LAWVRENOE F. BRAINE, OF

BROOKLYN, NEW YORK.

INSULATING-PAINT.

SPECIFICATION forming part of Letters Patent No. 701,392, dated June 3, 1902.

Application filed September 5, 1901.

To rtZZ whomit may concern:

Be it known that I, LEONARD M. RANDOLPH, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented an Improvement in Japanning and Insulating-Paint Compounds and Methods of Manufacturing the Same, of which the following is a specification.

The object of my present invention is to produce a material adapted for covering or painting the surfaces of metal forms, as a japanning-varnish orinsulating-pain t. In carrying out my invention I employ a waste product from the manufacture of varnish, japans, and shellac*that is,the cleanings of tanks holding such materials and known as varnish residue or mud in the trade. With this material I employ powdered peat and naphtha or other suitable materials as a thinning agent. In the manufacture of said japanning orinsulating-paint the said Varnish residue or mud is rendered hot-about 300 Fahrenheit-and is then strained through cloth or suitable straining material to remove therefrom lumps and pieces of various kinds. To the strained material While hot I add about twenty-five per cent. of powdered peat and mix or stir the same thoroughly into a homogeneous mass. This material is then thinned down by the addition of naphtha or similar solvent to such consistency as will render the same ready for use. This material is laid onto the surfaces of metal or other materials preferably with a brush and by applying a heavy coat,which coat is thereafter advantageously baked on in a suitable oven at from 100 Fahrenheit to 175 Fahrenheit. The finished japanning or paint is impervious to heat, cold, and moisture,is proof against acid and other chemicals, and is a substantially-perfect electrical insuerial No. 74,442- (No specimens.)

lation upon the surface of the material to which the same is applied, and I prefer in the case of the insulating-paint to continue the temperature in the baking-oven up to as high as 275 Fahrenheit to render the same impervious to heat. These operations usually oonsume from three to forty-eight hours, aocording to the results to be obtained.

I claim as my invention-- 1. The japanning or insulating compound herein specified,consisting of varnish residue, powdered peat and naphtha or similar solvent, substantially as set forth.

2. The japanning orinsulating-paintherein specified and consisting of varnish residue, about twenty-five per cent. of powdered peat, and naphtha or similar solvent sufficient to thin the same down to the desired consistency, substantially as set forth.

3. The method herein specified of manufacturing a japanning or insulating-paint, consisting in taking a waste product from the manufacture of varnish, japans and shellac, and known as varnish residue, heating the same hot and straining the same through cloth or similar material for the removal of various foreign substances, adding to the hot strained varnish residue about twenty-five per cent. of powdered peat, stirring the same thoroughly to form a homogeneous mass, and adding thereto naphtha or similar solvent material for the purpose of thinning the same down to the desired consistency, substantially as set forth.

Signed by me this 22d day of August, 1901.

LEONARD M. RANDOLPH.

Witnesses:

GEO. T. PINCKNEY, S. T. HAVILAND.