Specification of John Birch : smoke-consuming furnaces.

  • Birch, John.
Date:
1860
Catalogue details

Licence: Public Domain Mark

Credit: Specification of John Birch : smoke-consuming furnaces. Source: Wellcome Collection.

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    V- A.D. 1860, 4ibh February, N“ 305. Smoke-consuming Furnaces. {This Invention received Provisional Protection only.) m PHOVISIONAL SPECIFICATION left by the said John Birch at the Office of the Commissioners of Patents, with his Petition, on the 4th February 1860. I, JOHN BiiiCH, of Duren, in the Kingdom of Prussia, at present residing 5 in Birmingham, in the County of Warwick, Civil Engineer, do hereby declare the nature of the said Invention for “ Improvements in the Construction op Smoke-consuming Furnaces,” to be as follows, that is to say:— My Invention consists in so arranging furnaces and their appliances, that instead of feeding the fires with cold air admitted in front of the furnace or 10 through the fire-doors, I exclude all air that would flow in from that quarter, applying (if necessary) a blast quite underneath the bed of the fire. The furnace is fired on the top of an inclined hopper plate fixed diagonally across the top of the fire-door, and passing down at an inclination of forty-five degrees at the back of the fire-door into the bed of the furnace, a drop door 15 closes the top of the hopper, and the hopper is always kept well filled with coal, which, as it gradually descends into the bed of the furnace, becomes coked, and thus all gases are burnt before the fuel reaches the bed. Above the bed of the furnace a transverse tube or tubes may be fixed; these are connected with longitudinal tubes, all belonging to the boiler, and passing 20 along the furnace flues. A blast pipe from a fan blast, when a blast is requisite, has its orifice immediately under the bed of the furnace, and at the bottom of the inclined hopper plate, and immediately above the mouth of the