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Publication numberUS990348 A
Publication typeGrant
Publication dateApr 25, 1911
Filing dateJul 5, 1910
Priority dateJul 5, 1910
Publication numberUS 990348 A, US 990348A, US-A-990348, US990348 A, US990348A
InventorsEdward H Ellis
Original AssigneeEllis Briquet Binder, Edward H Ellis, Alfred D Chandler
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fuel-briquet and method of making same.
US 990348 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




No Drawing.

T 0 all whom it may concern:

Be it known that I, EDWAI:D H. ELLIS, of Somerville, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Fuel- Briquets and Method of Making the Same, of which the following is a specification.

This invention relates to a new and useful briquet as an article of manufacture, and to the particular application of the process for making such new and useful briquet.

Heretofore the best briquets have been made with binders of coal tar pitch, or of silicates, and of oil, but the smoke and the odor from such binders have impaired their usefulness and sale.

This invention provides a fuel briquet free from the aforesaid objections, and which is cohesive, waterproof, odorless, smokeless, retains its form in the fire, has a high calorific efiiciency, and is comparatively inexpensive to manufacture.

In carrying out my invention, I first produce a composition containing sulfuric acid, boraX, molasses and water or their reaction products. This composition is then incorporated with comminuted fuel and the composition is then mechanically pressed into the form of briquets; the briquets are then subjected to calorific action of a certain temperature through the medium of a specially designed and regulated oven.

The composition may be in the proportion of one-half ounce of sulfuric acid, one (1) ounce of boraX, one and threequarters (1%) ounces of molasses and one (1) pint of water, this total quantity of composition being then used in the proportion of two hundred (200) pounds of composition to one (1) ton of comminuted fuel. I do not, however, limit myself to these specific proportions.

When the composition and fuel have been thoroughly incorporated by suitable machinery, the briquets are made into any desired form, preferably under such a pressure as the graded requirements of combustion demand. The briquets are then sub jected to a process of final elimination of moisture, and simultaneously to a process of induration and waterproofing, through the added binding operation of caloric upon Specification of Letters Patent.

Application filed July 5, 1910.

Patented Apr. 25, 1911.

Serial No. 570,498.

the chemical ingredients employed in the composition, these effects being produced by a suitably arranged oven kept at a temperature of about 350 F, and through which the passage of the briquets is regulated for from about ten (10) to about twenty (20) minutes, the degree of the heat and the duration of the transit in the oven being governed by the kind of service for which the briquets are intended.

Ihave found in practice that such briquets are not only hard enough to bear transportation and handling, but that they are also waterproof, and are odorless and smokeless during combustion. Also, that they possess a high calorific efiiciency and preserve their form in the fire, the outer portion during combustion presenting of course some ash, which, however, is crowded ofi, but leaving the inner and unconsumed portions still hard enough to sustain the weight of fresh fuel above, and to preserve their form during slicing of the fire.

One of the reasons why my improved briquets are economical to manufacture is that the inexpensive chemicals specified so combine as to reduce to the minimum the time and degree of heat applied to render them hard and waterproof.

Gomminuted bituminous or soft coal made into briquets with my improved composition and treatment, is as hard as anthracite coal, and burns without the annoying smoke nuisance usually resulting from the use of soft coal. Briquets manufactured under my invention have the equivalent weight value of hard coal, but without cinder loss because of the complete combustion of the briquets.

I claim 1. A briquet manufactured of comminuted fuel and a composition including the reaction products of sulfuric acid, boraX and molasses.

2. A briquet manufactured of comminuted fuel mixed with a composition containing the reaction products of sulfuric acid, boraX, molasses and water, the said fuel and composition being mixed, shaped and baked.

3. A briquetmanufactured of comminuted fuel, and the reaction products of sulfuric acid, boraX and molasses rendered hard and waterproof by heat.

4:. The method of making fuel briquets,

consisting in mixing With eolnl'ninuted fuel In testimony whereof I have affixed. my at compositign containing the reaction prodsignature, in presence of two Witnesses. nets of sul uric acid, borax molasses and 1' Water, forming the mixture into briquets 'EDYVARD ILLLIS' under pressure, and then subjecting the Vitnesses:

briquets t0 the action of heat to render them E. BATOHELDER,

hard and Waterproof. P. W. PEZZETTL Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

Correction in Letters Patent No. 990,348

It is hereby certified that in Letters Patent No. 990,348, granted April 25, 1911, upon the application of Edward H. Ellis, of Somerville, Massachusetts, for an improvement in Fuel-Briquets and Methods of Making Same, an error appears requiring correction as follows: In the grant and in the printed heading it is stated that the inventor, said Ellis, assigned, by mesne assignments, his right to Edward H. Ellis and Alfred D. Chandler, both of Brookline, Massachusetts, Whereas it should have been stated that he assigned, by mesne assignments, his right to himself ancl Alfred D. O/Lfilfltllel', 0f Brookl'ine, lyfitssaehusetts, as shown by the record of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 23d day of May, A. D., 1911.


Acting flomm'lssioner of Patents.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4698067 *Nov 19, 1986Oct 6, 1987Fmc CorporationFormcoke having modified bituminous binder
US4738685 *Feb 10, 1987Apr 19, 1988Coal Industry (Patents) LimitedCoal briquetting process
Cooperative ClassificationC10L5/10