IMPROVEMENTS IN THE CONSTRUCTION OF STEAM BOILER AND OTHER FURNACES FOR THE PURPOSE OF CONSUMING THEIR SMOKE
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
JOHN MARTIN STANLEY Engineer 2 Cranbrook Park Wood Green London, N.
in the county of Middlesex THOMAS BLAKEMORE STANLEY Engineers Clerk
2 Thurveston Villas Derwent Grove Champion Hill East Dulwich in the County
of Surrey, do hereby declare the nature of the said invention for "IMPROVEMENTS
IN THE CONSTRUCTION OF STEAM BOILER AND OTHER FURNACES FOR THE PURPOSE
OF CONSUMING THEIR SMOKE" to be as follows:-
The novelty of our Improvements consists in the provision of dual channels for
conveying separately the volatile and incandescent gas with the necessary oxygen
into a combustion chamber provided at the back of the fireplace into which these
gases meet or converge and unite at high temperatures thereby effectually ensuring
their combustion.
The objects of this arrangement are to prevent or greatly abate the smoke
nuisance to economise fuel and to mitigate the severe toil of the fireman or stoker.
These Improvements are effected by constructing a vertical fireplace or oven
provided with two separate outlets in the back connected by a descending flue
formed in brick work behind the fire place.
One of these outlets is formed in the lower part of the combustion zone which
contains the incandescent fuel, the other is placed in the upper part of the fire
place above the level of the crude fuel, the upper outlet is provided to convey the
volatile gases or smoke through the descending flue or channel into the combustion
chamber behind the fire where they unite with the incandescent gases passing
through the lower outlet in the fire place, the heat generated in this combustion
chamber may then be applied and utilised for any convenient and desirable purpose
The fire place or oven may be constructed. of any suitable material and of any
convenient form and size which will vary according to the various purposes to
which it may be applied.
For the purpose of more effectually withdrawing the smoke and volatile gases
from the upper part of the fireplace into the descending fluo a jet of steam may
be injected into the upper part of the said flue inducing a current of air which
with the gases are propelled into the combustion Chamber The necessary amount
of air may be conveyed through lateral openings provided in the lower part of the
fireplace by the usual means of grate bars and obtained by means of the natural
draught of a chimney or it may be propelled or induced therein by any known
method of inducing a blast or current of air.

page_text: .
COMPLETE SPECIFICATION. · ·
JOHN MARTIN STANLEY of 2 Cranbrook Park, Wood Green, in the County of
Middlesex Engineer, and THOMAS BLAKEMORE STANLEY 2 Thurveston Villa, East
Dulwich in the County of Surrey, Engineers Clerk, do hereby declare the nature
of our invention for IMPROVEMENTS IN THE CONSTRUCTION OF STEAM BOILER AND
OTHER FURNACES FOR THE PURPOSE OF CONSUMING THEIR SMOKE and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
In the construction of furnaces and for applying this Invention we form a
vertical Fire place or oven which may be built of fire brick or any other suitable
refractory material and of any convenient size or shape, which will depend upon
the character of the Furnace or the purpose for which it is intended. This Fire
place may be provided with either loose fire bars or it may have a solid bottom of
brick work and the necessary oxygen for the combustion of the fuel may be
conveyed with a current of air induced by the ordinary chimney stack, or supplied
by a fan, blowing engine, jet of steam or any other known methods of producing a
forced blast.
.
The current of air or blast may be passed into the Fire place either through bars
placed, or apertures formed in the base of the Fire place or it may be conveyed
through lateral aperatures near the base of the Fire place. These apperatures may
be of any convenient size, form, or number.
On either convenient side or sides and near the bottom of the Fire place we
provide an opening or openings which may be closed or opened when desired for
the purpose of clearing out the ashes or incombustible part of the fuel when it
may be necessary or desirable to do so.
At the back and near to the bottom of this Fire place we form an outlet flue for
the passage of the products of combustion into the furnace for heating or melting
purposes, as the case may be. This outlet flue is placed in a part of the Fireplace
on a level with, and at the back of the incandescent fuel.
In the upper part and at the back of the Fire place we form a flue or channel
which is continued downwards and terminates in the horizontal flue through which
the products of combustion pass from the lower part of the Fireplace into the
heating or melting chamber.
This descending flue is formed for the purpose of conveying the smoke or volatile
gases into the horizontal flue containing the incandescent products of combustion.
Into this descending flue or channel we convey through an external connection
with the atmosphere a supply of air by means of either the natural draught of a
chimney or of a propelled or induced current for the purpose of causing the
combustion of the sinoke or volatile guses at their juncture with the incandescent
products of combustion in the intermediate fiue between the fireplace and that part
of the furnace where the heat is intended to be utilized.

page_text: EXPLANATION OF DRAWING.
The drawing is a longitudinal section of the Fireplace showing the particulars of
our Invention.
A shows the vertical Fireplace. B, the part of the furnace in which the heat is
intended to be utilized. Ċ the combustion chamber in which the products of.
combustion are conveyed from the lower part of the Fireplace A and the upper
part of the Fireplace a through the flue D. D. E, the external connection between
the flue D. D. and the atmosphere. F, the same external connection between the
atmosphere and the flue D D, when a current of air is propelled by means of a jet
of steam.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we more especially claim as our Invention is
The arrangement for conveying the smoke or volatile gases formed in the upper
part of the Fireplace through a separate Blue or channel and in this flue or channel
supplying the air necessary to cause its combustion in its confluence with the
incandescent gases passing from the lower flue or channel into the heating or
melting part of the furnace as herein described in this Specification and shown
upon the accompanying drawing which includes the flues and spaces between a
and c including D. D. and E or F.