Specification of Désiré Marchal : combustion of smoke.

  • Marchal, Désiré.
Date:
1867
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Désiré Marchal : combustion of smoke. Source: Wellcome Collection.

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    Marched9s Improvements in the Combustion and Prevention of Smoke, $c. WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters Patent, bearing date the Thirteenth day of August, in the year of our Lord One thousand eight hundred and sixty-six, in the thirtieth year of Her reign, did, for Herself, Her heirs and successors, give and grant unto 5 me, the said Desire Marchal, Her special licence that I, the said Desire Marchal, my executors, administrators, and assigns, or such others as I, the said Desire Marchal, my executors, administrators, and assigns, should at any time agree with, and no others, from time to time and at all times there¬ after during the term therein expressed, should and lawfully might make, 10 use, exercise, and vend, within the United Kingdom of Great Britain and Ireland, the Channel. Islands, and Isle of Man, an Invention for “ Improve¬ ments in the Combustion and Prevention of Smoke and in Increasing the Heating Power of Fuel,” upon the condition (amongst others) that I, the said Desire Marchal, my executors or administrators, by an instrument in writing 15 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 after the date of the said Letters Patent. 20 NOW KNOW YE, that I, the said Desire Marchal, do hereby declare the nature of my said Invention, and in what manner the same is to be performed, to be particularly described and ascertained in and by the following state¬ ment (that is to say) :— My said Invention, which is applicable to every description of furnace, oven, 25 or grate, consists of certain improved precesses by the use of which the smoke and gaseous products of combustion are economically consumed. This result is obtained by the introduction into the grate or furnace, by means of tubes or through small lateral openings, of a current of hot air or the vapour of water previously carburetted; such current is previously passed through very fine 50 metallic wire gauze which has the effect of finely dividing the molecules of the said current before it penetrates into the furnace in which they combine with the atmospheric air contained therein and the products of the substances in course of combustion, whereby the steam is decomposed and hydrogen gas evolved, which in conjunction with the hydrocarbon employed as herein-after 55 mentioned becomes instantly a sheet of flame covering the surface of the combustible fuel, and through which flame the smoke and gases seeking to escape towards the chimney must pass and are necessarily consumed. Ihe carburization of the hot air or vapour of water may be effected by any of the ordinary methods, one of the most simple of which is that of placing the
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