Improvements in Apparatus for Aiding the Combustion of Fuel and Smoke in Furnaces.
Year: 1897

page_text: Date of Application, 28th Aug., 1897
Complete Specification Left, 27th May, 1898-Accepted, 27th Aug., 1898
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Aiding the Combustion of Fuel and
Smoke in Furnaces.
I, ANDREW BADGER, of Green Lane, City of Sheffield, Ironfounder, do hereby
declare the nature of my invention to be as follows:-
My invention relates to an improved apparatus for supplying air to the fuel in
furnaces and also to the back of the bridge, for the better consumption of the fuel
and any unconsumed gases.
It consists of a blowing chamber preferably fixed down the centre of the furnace,
its rounded top face a little above the level of the firebars on each side. In form
the chamber is deep and narrow and it is supported in front by the dead plate, at
the back upon the cross bearer, and may have other supports if desired.
The underside is rounded, and in front there is a mouth piece communicating
with the interior, while the top opening is closed by a grating or perforated plate
made in one or more pieces as preferred.
The interior has a ledge upon each side to support the perforated plate before
mentioned, as well as a metallic lining arranged to leave a space at each side and
also underneath for the passage of air to keep the outside casing of equal tempera-
ture all over.
A steam jet or more than one if desired projects into the mouthpiece and when
in use carries a large quantity of air with the steam filling the blowing chamber
and passing through the slots or perforations in the grate into the fuel both above
and on each side of it causing perfect combustion.
A second steam jet may be used to force air into the air space around the metallic
lining, which finds its way out at the far end and passes up through the grating.
As an addition to the above described apparatus I use a metallic air-box with an
elongated mouth which is built into the bridge of the furnace having the mouth
opening from the back into the flue.
Into the bottom of the air box or thereabouts, I fix a pipe or conduit. for air
which is carried to the front of the furnace or its firing hole, and in some cases
this may also be provided with a steam jet.
Thus any unconsumed products of combustion passing over the bridge, are met
with the heated air issuing from the mouth of the air box, and are consumed.
Thated the 25th dow of Amount 1907
Agent for Applicant, Bank Buildings, George Street, Sheffield.
COMPLETE SPECIFICATION,
Improvements in Apparatus for Aiding the Combustion of Fuel and
Smoke in Furnaces.
ANDREW BADGER, Long Croft Works, Green Lane, Sheffield, Ironfounder, do
hereby declare the nature of this invention and in what manner the same is to
[Price 8d.]
COMPLETE SPECIFICATION,
Improvements in Apparatus for Aiding the Combustion of Fuel and
Smoke in Furnaces.
ANDREW BADGER, Long Croft Works, Green Lane, Sheffield, Ironfounder, do
hereby declare the nature of this invention and in what manner the same is to
[Price 8d.]

page_text: be performed, to be particularly described and ascertained in and by the following
statement:
The first part of this my said invention, is shown in Fig. 1 and consists of a
hollow bar A or three sided trough, with air holes on top plate B Fig. 2 open at one
end, with a flange or stud on each side of the inside 66; the said hollow bar to be
made of cast iron or other suitable material and of any size to suit any furnace to
which it may be applied.
The second part, Fig. 2 is a convex plate B made up of one or any number of
pieces, with oblong or any other shaped holes, set at various angles, through which
steam and air is forced-the holes being set at various angles allows it to go in
all directions over and through the fire-this convex bar fits within and on the
flange or other seat provided on the hollow bar A and on the flange b.
The third part Fig. 3 is a flanged half tube C, of special shape and fits inside
the hollow bar A on the flanges 6, leaving an air space between the bottom, sides
and about three inches off the back end of the hollow bar A.
The fourth part Fig. 4 is a trumpet piece G which is fitted to the open front end
of the hollow bar A by bolt holes f. f.
The fifth part is a plain straight pipe, which is fixed immediately underneath the
hollow bar A, and through the bottom C of the middle bearer H, and is fitted into
the bottom of %, which is built within the bridge of the furnace of the boiler tube
leaving the mouthpiece or outlet d, exposed on the unseen side of the bridge.
The sixth part Figs. 5 and 6 is made a hollow Z, shaped and is enclosed in the
brickwork of the furnace bridge, leaving only the outlet a, exposed.
The seventh part is a smaller trumpet piece G2 which fits on the front end of
the pipe in the fifth part and within the larger trumpet G piece (fourth part)
attached to the front end of the hollow bar A. The steam jets, just enters G
and G2, Figs. 4 & 9.
The eighth part, Fig. 7 is the bearer H, and supports the hollow bar A.
All the several parts of this my said invention, may be made of cast or wrought
iron or other suitable material. A steam pipe is brought down the front of the
boiler, into which a steam jet is fitted and fixed within the trumpet piece G Fig. 4
and directed into the centre of the opening in the front of the hollow A, which
causes a strong current of steam and air to be driven through the openings in the
bars or plates Fig. 2, into and amongst the fire and flames, generating great heat
and causing a circular forward motion of the flames and rapid consumption of
the smoke. Another steam pipe fitted with a jet and fixed within the smaller
trumpet G2 which causes a strong current of air to issue from the mouth-piece a
of Z, Figs. 5 and 6 built in the bridge, which comes in contact with and ignites
the smoke as it passes over the bridge aforesaid and thereby completes the com-
bustion.
Fig. 8 shows the various parts fitted together and Fig. 9, shows it arranged in
a boiler furnace between ordinary fire-bars with bridge removed, to show mouth-
piece a (Figs. 5 and 6). Fig. 10 shows a section across the bearer H, (Fig. 7).
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare I do not limit
myself to the precise details as hereinbefore specified and illustrated on the
accompanying drawings, because equivalent modifications or variations can be
made in such details, quite consistent with the principles or characteristic features
of the invention and in conclusion I declare that what I claim is :-
First. A hollow bar or trough with open front end, substantially as described in
the first part and shown in Fig. 1.
Second. A convex plate (made of one or any number of bars) with numerous
perforations, substantially as described in the second part and shown in Fig. 2.
Third. A flanged half tube of special shape, substantially as described in the
third part and shown in Fig. 3.

page_text: Fourth. A trumpet piece of special shape substantially as described in the fourth
and seventh parts and shown in Fig. 4.
Fifth. A pipe substantially as described in the fifth part.
Sixth. A hollow Z shaped pipe substantially as described in the fifth and sixth
parts and shown in Figs. 5 and 6.
Seventh. A middle bearer of special shape substantially as described in the
eighth part and shown in Fig. 7.
Eighth. A combination of the several parts for the more perfect combustion
of smoke and gases, substantially as shown and described in my several parts.
T: 20th day of May 1898
ANDREW BADGER.