Specification of Samuel Stell : apparatus for preventing smoke and economizing fuel in furnaces.

  • Stell, Samuel.
Date:
1873
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Samuel Stell : apparatus for preventing smoke and economizing fuel in furnaces. Source: Wellcome Collection.

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    Stell's Apparatus for Preventing Smolce and Economizing Fuel. my executors or administrators, by an instrument in writing under my, or their, or one of their hands and seals, should particularly describe and ascertain the nature of the said Invention, and in what manner the same was to be performed, and cause the same to be filed in the Great Seal Patent Office within six calendar months next and immediately 5 after the date of the said Letters Patent. NOW KNOW YE, that I, the said Samuel Stell, do hereby declare the nature of the said Invention, and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement thereof, that is to say :— ^ It is well known that in order to prevent dense or black smoke from issuing from furnaces it is necessary to admit an additional quantity of air, or it may be steam and air into the furnaces immediately after stoking or feeding of fuel in order to consume the extra quantity of gas and smoke evolved at such time, and that by such gas and smoke being 15 consumed by inflammable combustion the temperature of the flues is raised higher than otherwise would be the case if such extra gas and smoke were allowed to escape unconsumed. It is also well known that after such gas and smoke ceases to be evolved the fire assumes an incandescent state, and that such extra 20 quantity of air, if not then shut off, causes the temperature of the flues to be reduced, thereby requiring the furnaces to be fed oftener than would be necessary if such extra quantity of air were shut off imme¬ diately after such gas and smoke abated or ceased to be evolved. My Invention relates to means by which this regulation or stoppage 25 of the supply of air to the furnaces may be self-acting. Por this purpose the extra quantity of air required for the combustion of the extra gases and smoke is admitted through an aperture or apertures at the front part of the furnaces, say at the door; or it may be at the back part or the bridge or other convenient part of the furnace that will admit of the 30 extra quantity of air being brought in contact with the gases and smoke produced by the combustion of the fuel to cause their inflammable combustion, and these apertures have flaps or valves capable of closing them, and which are opened between the opening and closing of the furnace doors so as to admit the largest amount of air to pass on to the 35 fresh fuel immediately the furnace door is closed. This extra quantity of air does not require to be shut off until the fuel ceases partially or