Imitation coal and method of making same

Details Imitation coal and method of making same Imitation coal and method of making same

1979-04-04

1980-11-11

Epstein, Henry F.

Stock material or miscellaneous articles

Three dimension imitation or 'treated' natural product

156 61, 272 8F, 428384, B44F 900

Patent

active

042333482

ABSTRACT:
To make imitation coal elements, in the form of pellets or lumps which will glow and radiate heat effectively when heated by a gas flame in an open-type firegrate, use is made of raw ceramic bulk fibers. An appropriate mass thereof is moistened with a stiffening agent such as potato starch and is then squeezed to shape it into its pellet or lump shape and to express any excess stiffening agent; then it is baked to set the stiffening agent and fix the shape of the pellet or lump. Thereafter the element is colored by use of a black metallic oxide/colloidal sodium silicate impregnant which is applied twice in successive dipping and baking operations.

REFERENCES:
patent: 697941 (1902-04-01), Hewitt
patent: 1336500 (1920-04-01), Berry
patent: 1567855 (1925-12-01), Meany et al.
patent: 1604850 (1926-10-01), Payne
patent: 1808780 (1931-06-01), Logan
patent: 3377229 (1968-04-01), Bryan
patent: 4076490 (1978-02-01), Hilker
patent: 4110063 (1978-08-01), Mitchell

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