Specification of James Robertson : furnaces or fire-places.

  • Robertson, James
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Robertson : furnaces or fire-places. Source: Wellcome Collection.

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    2 A.D. 1854.—N° 1532. Provisional Specification. Robertsons Improvements in the Consumption or Prevention of Smoke. is thrown back against the inclined grating, which, when the door is closed resumes its original position, by the aid of a weighted lever or other suitable arrangement. By this means a space is always left between the face of the grating and the mass of fuel, whereby a free ingress for the oxygen is afforded. ^ The ah enters partly through the furnace bars in the ordinary manner from the 5 ash pit, and partly by a separate and distinct pipe, which has an expanded mouth,in the front of the ash pit, and communicates with air passes formed in the front of the bridge, immediately behind the oblique or inclined grating, herein-before described. The air which enters from the back impinges upon the surface of the fuel, and, from the peculiar form of bridge, the heated air 10 and gases from the back of the furnace will have to traverse forward under the projecting portion of the bridge before they can escape into the flues, and by this means they will encounter the smoke and unconsumed gases from the front portion of the furnace, which will thereby be effectually consumed before 1 15 entering the flues. LONDON: Printed by George Edward Eyre and William Spottiswoode, Printers to the Queen's most Excellent Majesty. 1855.
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