Improvements in the Method of and Means for Perfecting Combustion and Consuming Smoke in Steam Boiler and like Furnaces.
Year: 1896

page_text: Date of Application, 30th Apr., 1896
Complete Specification Left, 29th Jan., 1897-Accepted, 27th Mar., 1897
PROVISIONAL SPECIFICATION.
Improvements in the Method of and Means for Perfecting
Combustion and Consuming Smoke in Steam Boiler and
like Furnaces.
We, STARKEY BROTHERS LIMITED, of Longroyd Bridge, Huddersfield,
Yorkshire, Woollen Manufacturers, and FREDERICK HINCHLIFFE, of Thornton
Lodge Road, Huddersfield, aforesaid, Engineer, do hereby declare the nature of
this invention to be as follows:-
This invention has reference to the perfecting of combustion in steam boiler and
like furnaces whereby the smoke and heavy gases given off shall be consumed in
passing to the flue and the heat of the furnace therefore considerably increased and
a saving in fuel effected.
In carrying out our invention we raise the height of the bridge either by
brick work or by a metal plate. box, or other suitable partition, or support, at the
upper end of which is an opening or a number of openings or perforations. Resting
on said elevated bridge or support is one end of a half circular, curved, or angular
structure, composed of firebrick or bricks; or it may be of metal, the opposite and
lower end of which rests upon the fire bars or support carrying same and forms a
chamber in front of the fire bridge either over the ends of the fire bars, or between
the bridge and the ends of the fire bars, which would be shortened to allow for this.
Air is admitted to said chamber from the ashes pit under the furnace, and is
brought into contact with the curved or angular shell or wall of the chamber in
passing to the opening or openings at the upper end or crown thereof, and such
shell or wall of the chamber being rendered incandescent by the heat and flame
which must impinge thereon in escaping to the flue, the air is raised to a high
temperature before it leaves the chamber and therefore on issuing from the opening.
or openings when it meets the smoke and gaseous matters from the furnace
immediate and complete combustion is produced the smoke and gases being all
consumed and the Hame and heat arising therefrom causing quick generation of
steam.
The air chamber may be provided with a damper to shut off or regulate the
quantity of air to he admitted thereto.
Dated this 29th day of April 1896.
TASKER & CROSSLEY,
Huddersfield, Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in the Method of and Means for Perfecting
Combustion and Consuming Smoke in Steam Boiler and
like Furnaces.
We, STARKEY BROTHERS LIMITED, of Longroyd Bridge, Huddersfield,
Yorkshire, Woollen Manufacturers, and FREDERICK HINCHLIFFE, of Thornton
Lodge Road, Huddersfield, aforesaid, Engineer, do hereby declare the nature of
his invention and in what manner the same is to be performed, to be particularly
escribed and ascertained in and by the following statement :-
This invention has reference to the perfecting of combustion in steam boiler and

page_text: like furnaces whereby the smoke and heavy gases given off shall be consumed in
passing to the flue and the heat of the furnace therefore considerably increased and
a saving in fuel effected.
In carrying out our invention we raise the height of the bridge either by
brickwork or by a metal plate, box, or other suitable partition, or support, at the
upper end of which is an opening or a number of openings or perforations.
Resting on said elevated bridge or support is one end of a half circular, curved,
or angular structure, composed of firebrick or bricks; or it may be of metal, the
opposite and lower end of which rests upon the fire bars or support carrying same
and forms a chamber in front of the fire bridge either over the ends of the fire
bars, or between the bridge and the ends of the fire bars, which would be shortened
to allow for this. Air is admitted to said chamber from the ashes pit under the
furnace, and is brought into contact with the curved or angular shell or wall of the
chamber in passing to the opening or openings at the upper end or crown thereof,
and such shell or wall of the chamber being rendered incandescent by the heat and
flame which must impinge thereon in escaping to the flue, the air is raised to a high
temperature before it leaves the chamber and therefore on issuing from the opening
or openings where it meets the smoke and gaseous máttér from the furnace,
immediate and complete combustion is produced the smoke and gases being all
consumed and the flame and heat arising therefrom causing quick generation
of steam.
The air chamber may be provided with a damper to shut off or regulate the
quantity of air to be admitted thereto.
In order that our said invention may be more fully understood reference is
bereafter had to the annexed sheet of drawings forming a part of this specification,
in which :-
Fig. 1 is longitudinal section of a steam boiler furnace to which our improve-
ments are applied: Fig. 2 is transverse section of same taken on line 1, 2.
Fig. 3 is sectional elevation of a modified construction of superheating wall or
partition; and Fig. 4 is plan thereof taken on line 3, 4.
Referring to the drawings A represents the boiler, B the fireplace or furnace
thereof, C the fire bars, D the ashes place, E the bridge, and F the fire box ur
flue behind the furnace through which the heated gases pass to the uptake or
chimney.
Our invention consists in the main of providing an oven or chamber G at the
rear of the furnace or between the fire and the bridge E, the front of this chamber
being formed by a partition or wall H supported at the lower end on a platform or
cross rail and resting at its upper end on the top of the bridge E which is built
sufficiently high for this purpose.
The partition or wall H is built up say of two, three, or more portions of plates
arranged side by side (see Fig. 2) in order that they may be more conveniently
handled and also removed singly when any one of them requires renewing, the
opposing edges of same overlapping each other so as to seal the joints. The said
wall or plates H may be composed of firebrick, bricks, cast iron or other metal or
conductor of beat which will withstand the heat of the furnace, cast iron having
been found to last well and answer the purpose required and therefore employed
in the construction of the oven. Each plate H is inade thicker in cross section
at the part where the fire rests against it than at the extremities as will be seen in
Fig. 1.
In the platform or cross rail I and under the oven G is an opening K which is
controlled by a valve or damper L hinged at L' and connected by arm M to a hand
bar or lever N which extends to the front of the ashes place D so as to be within
easy reach of the fireman who by pulling it forward or forcing it backward can
open or close the valve or damper or regulate the area of the inlet to the oven G to
suit requirements, the bar or lever N being held in any position to which it is
moved by the engagement with the bottom of a U shaped bracket O, of one of the
notches N formed on the underside of said bar. When the valve L is opened air

page_text: passes through the opening K into the oven or chamber G where it comes into
contact with the interior surfaces of the plates H which, being raised to red heat
by the fire resting against same and the flames and hot gases playing thereon, heat
the air to a very high temperature.
This superheated air leaves the oven by way of the channel or outlet P which
delivers it at the rear and close to the top of the bridge E so as to bring it into
direct contact with the smoke and heavy gases passing over the bridge, the result
being to render the smoke inflammable and bring about instant combustion, all the
carbonaceous gases being consumed and the hot flames shooting along the flue or
fire box F and aiding materially in the rapid generation of steam whereby a great
saving in fuel is effected and all smoke consumed.
The outlet channel P is preferably contracted as shewn in order that the air
cannot pass too rapidly through and out of the oven, and its position is such that
solid matters cannot fall into and choke up the channel.
Instead of having one outlet P the width of the oven, we may form two or more
narrower channels or outlets through the bridge E.
The binged damper or valve L is arranged so as to assist in directing the air
into contact with the wall or plates H.
In Figs. 3 and 4 we shew a modified construction of wall or plate H which is
fluted, corrugated or provided with ribs, somewhat as illustrated, to increase the
heating surface and to split up the air which can thus be brought more intimately
into contact with the heated surfaces.
The extent to which the damper or valve L is opened is determined by the
draught of the flue or uptake and the requisite amount of air required to secure
complete combustion this varying in different boilers.
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 claim is :-
Firstly. In steam boiler or like furnaces, an oven or superheating air chamber G
formed by a bridge such as H, supported or built between or intermediate of the
fire and the ordinary fire bridge substantially as herein shewn and described.
Secondly. In steam boiler or like furnaces, the combination, with a superheating
air oven or chamber such as G at the rear of the fire place, of a damper or valve L
for controlling the air inlet and means for actuating and regulating said valve or
damper substantially as herein shewn and described.
Thirdly. In steam boiler and like furnaces, the combination, with a superheating
air oven or chamber of a plain, or corrugated, fluted or ribbed shell, wall or
plates H substantially as herein shewn and described.
Dated this 27th day of January 1897.
TASKER & CROSSLEY,
Huddersfield, Patent Agents