Improvements in Furnaces for Steam Generators.
Year: 1891

page_text: Date of Application, 24th Apr., 1891
Complete Specification Left, 23rd Jan., 1892—Accepted, 27th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Furnaces for Steam Generators.
I, CHARLES ARMITAGE BROWN of the firm of Huxham & Browns of Exeter
in the County of Devon, Engineers, do hereby declare the nature of this invention
to be as follows:-
This invention consists in a novel construction of furnace for burning tan and
other refuse fuel, and may be applied to any type of boiler.
In carrying out this invention, as applied to, say, a Cornish boiler, I prefer to
build the furnace in front of the boiler, and it may consist of two side walls and a
front wall, in which may be adapted a fire door. The ash pit may be closed or
open, as desired, and the top of the furnace may be open.
Suitable grate bars will be provided, and holes to admit air to support combustion
may be made in the side walls a little above the surface of the grate, and provided
with regulators to regulate the admission of air.
At a suitable height above the grate, and conveniently supported, is placed an
inverted V-shaped dome or roof, which will form the cover of the fireplace or com-
bustion chamber.
The base of the V will be of less width than the fireplace, so as to leave a space
between the dome and the side walls.
The upper part of the furnace, above the dome or roof, will form a receptacle for
the fuel, which will gradually slide down, and pass onto the fireplace between the
dome & the side walls.
In some cases I may find it desirable to use two or more combustion chambers to
one boiler constructed in a manner similar to that above described.
Dated this 24th day of April 1891.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Furnaces for Steam Generators.
1 CHARLES ARMITAGE BROWN, of the firm of Huxham & Browns, of Exeter
in the County of Devon, Engineers 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 consists in a novel construction of furnace for burning tan and
other refuse, as fuel, and may be applied to any type of boiler.
In carrying out this invention, as applied to, say, a Cornish boiler, I build the
furnace in front of the boiler, and it may consist of a chamber, preferably open at
top, and formed by two side walls and a front wall, in which may be adapted a
fire door.
Suitable grate bars will be provided at a proper height from the ground, and the
ash pit may be closed or open, as desired.
Holes to admit air to support combustion may be made in the side walls a little
above the surface of the grate, and provided with regulators to regulate the
admission of air.
At a suitable height above the grate, and conveniently supported, is placed an
inverted V-shaped metal casting, which will form a cover or roof to the fire-place
or combustion chamber.

page_text: The base of the ✓ will be of less width than the fireplace, so as to leave, when
in position, a space between the casting and the side walls.
The upper part of the chamber, above the metal roof, and the inclined portions
of the casting, will form a receptacle or double hopper for the fuel, which will
gradually slide down, and pass into the fireplace between the casting and the
side walls.
In some cases I may find it desirable to use two or more combustion chambers to
one boiler constructed in a manner similar to that above described.
In the accompanying drawing,
:
Fig. 1 is a longitudinal section of part of a Cornish boiler with my invention
applied thereto.
=
Fig. 2 is a transverse section on the line, Fig. 1; and
Fig. 3 is a sectional plan view on the linez z, Fig. 1.
A is the boiler and B the furnace, which is formed by the side walls B and front
wall B', in which is an opening B2 closed by a fire door. C are the grate bars,
C¹ the ash pit, which may be closed or open, and C³ the bridge.
In the side walls B, openings a a are made at or about the level of the grate, to
admit air to support combustion. These openings may be provided with means
whereby they may be closed, if desired.
In the furnace is placed the inverted V-shaped or semicircular casting D, which
will form the cover or roof to the furnace. This roof will be supported, a short
distance above the grate, by the bridge C2, and front wall B', or in any other con-
venient manner, and its greatest width will be less than that of the furnace, so as to
leave a space on either side between its edges and the side walls, for the fuel to pass
through onto the grate.
This roof, with the side walls of the furnace chamber, will form a kind of double
hopper-shaped receptacle for the tan or other fuel.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The construction of furnace substantially as herein shown and described.
2. In a furnace for burning tan or other refuse as fuel, the combination with a
chamber or receptacle, preferably open-topped, and provided with a grate, of an
inverted V-shaped or semi-circular cover or roof arranged in the chamber, substan-
tially as herein shown and described, and for the purpose set forth.
Dated this 22nd day of January 1892.