An Apparatus for Consuming Smoke and Fumes in Factory and other Chimneys, and Economising the Heat Generated thereby.
Year: 1898

page_text: Date of Application, 23rd Dec., 1898
Complete Specification Left, 17th Aug., 1899-Accepted, 25th Nov., 1899
An Apparatus for Consuming Smoke and Fumes in Factory and other
Chimneys, and Economising the Heat Generated thereby.
I, GEORGE CHARLES LESLIE, of 153, Croydon Road, Anerley, London, S.E.,
Inspector of Taxes, do hereby declare the nature of this invention to be as
follows:-
I insert in the chimney a gridiron or cage with a layer thereon of asbestos or
like indestructible material, maintaining the latter in a state of incandescence by
gas jets, when the smoke in passing through is consumed, and the heat generated
thereby utilised in raising the temperature of the water supply to the boilers.
Dated the 23rd December 1898.
An Apparatus for Consuming Smoke and Fumes in Factory and other
Chimneys, and Economising the Heat Generated thereby.
I, GEORGE CHARLES LESLIE, of 153, Croydon Road, Anerley, London, S.E.,
Inspector of Taxes, 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:―
The object of this invention is to consume, after their escape from the furnace,
the smoke and fumes passing through factory and other chimneys, and to effect
this I insert in the chimney or in a suitable chamber between it and the furnace
a grid or cage with a layer thereon of loose asbestos or other indestructible or fire
resisting material which is kept in a state of incandescence by a grid of Bunsen
gas jets beneath.
The smoke and fumes passing through the incandescent asbestos or other fire
resisting material are consumed, evolving heat (far in excess of that from the gas
alone) which may be utilized in raising the temperature of the feed water to
boilers. or directly in raising steam.
In describing the accompanying drawing of a chimney to which this apparatus
is applied. B is the chimney, Ca series of gas jets, D a grid supporting a layer
of lumps of asbestos or other fire-resisting material, and E a water-jacket with
tubes in connection forming a boiler: this jacket and tubes, however, form no part
of my invention.
The smoke in escaping from the furnace, ascending the chimney B, passing
through the gas jets C, and incandescent substance on D is consumed; the heat
evolved from the joint combustion of gas and smoke being sufficient to raise

page_text: steam in the boiler E; so constructed as not to impede the draught, which by
this apparatus is increased.
It is not necessary that the gas jets should be continuously burning, but only
when, by the addition of fuel to the furnace, smoke is evolved.
The apparatus can be placed in any part of the chimney deemed most suitable,
or in a chamber connected therewith; and the burning surface need not in most
cases be of so great diameter as the chimney.
Having now practically described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what
I claim is:--
(1) The apparatus as substantially herein before set forth and described, in
making incandescent by gas jets the material through which the smoke passes,
is novel.
Dated this 17th day of August 1899.