US1935213A - Surface ornamentation - Google Patents

Description

Patented New, Mi,

raisin TATHQN ,7, Mitchell, St. lilouis, P/ilo.

No Application August 24 1983i denial Nils 559,133

7 My invention relates to the ornamentation of surfaces, particularly wood and metal surfaces, and it has for its principal object to provide a surface ornamentation that is highly durable and of beautiful appearance, having highly lustrous finish such as is produced by metal plating. The invention consists principally in the ornamenting of surfaces by applying thereto a thin coat oi a compound of bismuth and baking the 19 article to make said coat permanent. The invention further consists in the process oi" surface ornamentation hereinafter described and claimed.

A satisfactory preliminary treatment for my process is to apply to the surface, preferably 1'5 by a spray gun, a suitable coating comprising varnish base, bronzing liquid, lacquer or the like having mixed therewith any of the well known metal powders, (such as bronze, silver, aluminum and gold bronze) followed by a coating of clear 20 varnish. This preliminary coating may be permitted to dry in air or the article may be baked. The preliminary coatings commonly used may be baked at a temperature of about 180 F. for ten minutes.

After the preliminary coating has hardened, my process comprises applying over said first coating a thin coating of finely divided bismuth or of a. powdered bismuth compound. Bismuth oxychloride is especially suitable for the purpose. The bismuth compound may be applied in a thin even layer by rubbing it on with cotton, chamois,

or other suitable soft material. The bismuth coating, after a slight rubbing, assumes a. highly polished and lustrous appearance similar to that of metal plate.

Under some conditions, no further treatment may be required after the application of the bismuth; but in order to make the finish permanent on articles that are to be handled, I bake the article sufliciently to soften the preliminary coat and enable the bismuth coat to'adhere firmly thereto. Excessive temperature should be- (011, bi -76B) is particularly applicable to metal and wood arti= cles.

What I claim is:

1. The process of surface ornamentation which comprises applying to the surface of an article so a preliminary coating of a metallic powder mixed with a suitable resinous base material, hardening said preliminary coating, applying thereto a compound of bismuth in a thin layer and baking the article sufliciently to soften the base material of 5 said preliminary coating.

2. The process of ornamenting metal surfaces coated with a substance having a resinous base, which comprises applying over said coating, a halogen salt of bismuth in a thin layer and then baking the article.

3. The process of ornamenting metal surfaces coated with a substance having a resinous base, which comprises applying over said coating, a halogen salt of bismuth in .a. thin layer and then baking the article at a temperature of about 180 Fahrenheit.

4. The process of ornamenting metal surfaces coated with a su'bstancehaving a resinous base, which comprises applying over said coating, bis= 8Q muth oxychloride in a thin layer and then bak= ing the article.

'5. The process'of ornamenting metal surfaces coated with a substance having a resinous base,

which comprises applying over said coating, bis- 35 muth oxychloride in a. thin layer and then baking the article at a temperature of about 180 Fahrenheit.

6. The process of surface ornamentation which comprises applying to the surface of an article a preliminary coating of a, metallic powder mixed with a suitable resinous base material, hardening said preliminary coating, applying thereto bismuth oxychloride in a. thin layer and then baking the article sufiiciently to soften the base mao5 terial of said preliminary coating.

-, LEO J. MITCHELL.