Improvements in Boiler and Furnace Fires.
Year: 1890

page_text: Date of Application, 24th Jan., 1890
Complete Specification Left, 24th Nov., 1890-Accepted, 24th Feb., 1891
PROVISIONAL SPECIFICATION.
[Communicated from abroad by REINHARD MANNESMANN and MAX MANNESMANN,
both of Remschard, Bliedinghausen, in the Empire of Germany, Engineers.]
Improvements in Boiler and Furnace Fires.
I, OLIVER IMRAY, of No. 28, Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents, do hereby declare
the nature of this invention to be as follows:-
My invention relates to means of working boiler and furnace fires in such a
mauner as to provide for combustion of smoke and of hydrocarbon substances
which often pass away without being properly consumed.
For this purpose,
I apply to the fire door or feeding aperture of the fire a sloping feed tube closed
at the top by a suitable feeding valve. From under this valve I lead a tube
down to the ashpit or to the lower part of the mass of fuel and I provide in the
course of this tube a steam injector jet causing a flow down the tube.
The hydrocarbons, which are mostly distilled from the upper portion of the fuel,
are thus caused to pass to the ashpit or lower part of the fire and thence
through the incandescent fuel on the fire grate, being thus converted into
permanent gas which is burned along with the fuel.
Dated this 24th day of January 1890.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Boiler and Furnace Fires.
I, OLIVER IMRAY, of No. 28, Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents, do hereby declare
the nature of this invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:―
This invention relates to a device for the combustion of the smoke of boiler
and other furnaces.
For this purpose a feeding pipe is provided at the fire door or at the opening
through which the fuel is charged and which feeding pipe is closed at its top by a
suitable valve or any other suitable device and through which the charge may be
introduced. Below this closing device a pipe is placed, which is connected with the
ash pit or with the lowest part of the fuel.
Within this connecting pipe an injector is arranged and this injector sucks off
partly the gases from the combustion chamber through the fresh coal and blows
them mixed with the products of distillation of the fresh coal resulting therefrom
below the ash pit or into the lower glowing part of the charge of fuel.
As the heavy hydro carbon gases are mostly distilled off through the above
mentioned tube they are in this way forced to enter the lowest part of the fuel
which is at the greatest heat. The heavy hydro carbon gas is thereby converted
into permanent gas, and as, by the high heating of the products of distillation, the
fuel is easier and more completely burnt and has no tendency to soot; the economical
value of the coal will be considerably increased.
The accompanying drawing shews a part longitudinal section of a boiler with
the above described apparatus applied thereto. A is the tube through which the
fuel is introduced and which is closed at the top by a valve B, held by a weight C.
D is the pipe leading from the upper end of the tube A. to below the fire grate,

page_text: and E is the steam or other injector for drawing the gases from the top end of the
tube and delivering them below the furnace.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The use in boiler and furnace fires of apparatus for drawing off a portion of the
combustion gases through the fresh coal, so as to distil off the volatile constituents
thereof, the distillation gases thus produced being led into the ash pit of the fire or
into the incandescent layer of the fuel, substantially as described.
Dated this 22nd day of November 1890.
ABEL & IMKAY,
Agents for the Applicant.