US1305392A - Fuel and process of making the same - Google Patents

Description

UNITED STATES PATENT OFFICE.

OTTO MEYER/S, OF WATTS, CALIFORNIA.

FUEL AND PROCESS OF MAKING THE SAME.

No Drawing.

To all whom it may concern: Be it known that I, OTTO MEYERS, a citizen of the United States, residing at WVatts, in

small quantity of ashes.

My invention consists in the steps of the process and the resulting product as hereinafter described and claimed.

I take as the base of my fuel a heavy bituminous material, such as coal tar, pitch, or asphalt, and heat the same in a suitable container until it boils freely. The object of boiling the same is to render the tar or asphalt fluid and to incorporate therewith the materials presently to be described.

When the tar or asphalt is boiling, I add approximately one-fourth pound of powdered marble, lime stone, or cement, for each pound of tar or asphalt, for the purpose of thickening the same so that the finished fuel product will remain firm and hold together without melting when the same is heated or burned. The inert material added to the tar or asphalt changes its property of becoming soft at ordinary temperatures, so that the same will remain firm. I next incorporate with the mixture a carbonaceous material, such as sawdust, wood shavings, coal dust, comminuted straw, paper and the like, using from three to four pounds of the carbonaceous material, the preferred form being sawdust. The purpose of the sawdust is to absorb the tar or asphalt and to transform the whole mixture into a crumbly mass. The boiling tar or asphalt partially or wholly carbonizes the sawdust, driving ofl the volatile matter which in a few moments begins to escape in the form of a heavy smoke. This stage of the process indicates that the reaction is complete. Further reaction must be arrested by cooling the same quickly, which is done by adding cold water thereto. The mixture Copies of this patent may be obtained for Specification of Letters Patent.

Application filed March 28, 1918.

Patented June 3, 1919.

Serial No. 225,336.

now forms a black slushy mass of the consistency of mortar.

The chemically inert material and the carbonaceous material should be heated before being added to the tar and asphalt.

The mixture when ready to be molded into briquets is again reheated in orderto soften the mass. The resulting briquets are of a dull black color which can be handled without soiling the hands, and which burn freely with a flame without melting in the fire. I

The powdered marble or lime stone will when the fuel is burned be reduced to calcium oxid generating carbon dioxid which escaping through the soft mass will cause the same to become porous and burn freely. Furthermore the carbon dioxid in passing through the incandescent carbon will take up carbon from the mass and at the same time be reduced to carbon monoxid which will burn freely. In this manner, the melting of the briquets made of coal tar and the like is avoided and a substantially perfect combustion of the fuel is effected. The fuel will burn freely without much smoke.

While I have found that the proportion of the ingredients stated, gives the best results, it will be understood that the same may be varied without departing from the spirit of my invention as claimed.

I claim:

1. A process of producing a solid fuel, comprising heating a bituminous material of the consistency of tar, until the same is fluid, adding powdered lime stone thereto, adding a comminuted carbonaceous material, cooling the mass by adding water thereto, reheating ,the mass to soften the same, and molding the mass into briquets.

2. A process of making a solid fuel, comprising heating tar until the same is fluid, adding powdered marble thereto, adding sawdust to the mass, cooling the mass, by adding water thereto, reheating the. mass to soften the same and molding the mass into briquets.

3. A solid fuel comprising tar, powdered marble, sawdust and water.

In testimony whereof I have signed my name to this specification.

OTTO MEYERS.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0.