US2477174A - Briquette for lighting fires - Google Patents

Description

Patented July 26, 1949 UNITED STATES PATENT OFFICE BRIQUETTE FOR LIGHTING FIRES Georg Fosnaess, Gulsrud, Norway No Drawing. Application July 2, 1947, Serial No. 758,715. In Norway August 19, 1946 3 Claims.

The present invention refers to a method of producing briquettes for lighting fires. The briquettes are chiefly characterised by their being soaked for about 15 minutes in a fluid consisting of Diesel-oil, cod liver oil and tar.

There are on the market briquettes for lighting fires, made of wood or pine roots saturated with an ignitible fluid and without such treatment but these briquettes, being insufliciently porous, do not absorb enough of the fluid.

The idea of the present invention is to produce briquettes for lighting fires, in a particularly quick and cheap way by applying a flu-id not previously used; this fluid makes the porous substance of the briquettes highly ignitible and supplies them with a moisture-protecting cover (outer section) which counteracts drying.

The process is as follows: The briquettes are cut out of a hard-pressed though porous material, e. g. hard-pressed wood card-board, A thickness in suitable sizes, e. g. 4" x A". The finished briquettes are now placed in a container made'of netting, which is lowered into a larger container filled with an ignitible fluid, consisting of 80% Diesel-oil, 15% thick cod liver oil with great fat contents and 5% tar, which are mixed well by means of a stirring device, heated or not heated. It is suflicient for the briquettes to be soaked in the fluid for about 15 minutes as the porous briquettes absorb the fluid instantly. Thereupon the briquettes are passed through a cooling device to enable the moisture-protecting cover of fat on the briquettes to set, then they go on to a packing machine to be packed in an impregnated material.

If it is diflicult to obtain the thick cod liver oil required, the ignitible fluid may consist of 75% Diesel-oil, cod liver oil of an inferior quality, 10% stearine and 5% tar. The cod liver oil may then be of a type containing less fat, as the stearine will deposit itself on the surface of the briquettes and serve as a moisture-protecting cover, this being the chief purpose oi the stearine,

2 Otherwise the process is the same as already described.

The briquettes may of course be made of other material than wood card-board as long as the material is porous in order that the thick fluid be absorbed right through. The composition of the fluid may also vary but after experiments carried out it has been agreed to keep to the ratios mentioned.

Thus, according to the invention the absorption of the thick fluid and the impregnation in the moisture-protecting cover of fat take place in one and the same operation, thus avoiding any additional treatment of the briquettes.

I claim:

1. A briquet for lighting fires, comprising hardpressed wood cardboard impregnated with an intimate mixture containing -80% Diesel oil, 5% tar, and 10-20 percent of a fatty substance selected from the group comprising cod liver oil and stearine.

2. A briquet for lighting fires, comprising hardpressed wood cardboard impregnated with an intimate mixture containing Diesel oil, 15% thick cod liver oil having a high fat content, and 5% tar. V

3. A briquet for lighting fires, comprising hardpressed wood cardboard impregnated with an intimate mixture containing 75% Diesel oil, 10% cod liver oil of low quality, 10% stearine, and 5% tar.

GEORG FOSNAESS.

REFERENCES CITED The following references are of record in the file of this patent:

FOREIGN PATENTS Number Country Date 729,496 France Apr. 26, 1932 501,465 Great Britain Nov. 21, 1938 522,299 Great Britain June 14, 1940