Improvements relating to Furnaces or Fire-grates for Gas Producers and for like purposes.
Year: 1897

page_text: Date of Application, 28th Dec., 1897
Complete Specification Left, 28th Sept., 1898-Accepted, 5th Nov., 1898
PROVISIONAL SPECIFICATION.
Improvements relating to Furnaces or Fire-grates for Gas Producers
and for like purposes.
I, JOHN HENRY WALKER, of Penleigh House, Cotham Grove, in the City of
Bristol, Engineer, do hereby declare the nature of this invention to be as follows:-
This invention consists of improvements relating to furnaces for gas producers
and for like purposes, my object being to so construct and arrange such furnaces
as to increase their efficiency and durability and to avoid the trouble commonly
experienced with clinker and through unequal burning of the fuel.
In the application of my invention to a gas producer furnace, I support the
fire-brick lining in the usual manner by an angle piece or ring of metal attached
to the steel or iron casing, leaving a chamber in the bottom of the producer of
sufficient depth to accommodate my improved furnace plate or cone grate. Such
grate consists of a cone shaped casting which when the producer is in operation
fits up close to the angle piece supporting the lining. The angle piece has either
a bevelled edge to fit the angle of the coned casting, or the edge may be made
flat on the under side, and the coned casting provided with a flange to fit under
the angle piece in such a manner as to prevent air from entering the furnace or
other than through the central aperture provided for the purpose. Such aper-
ture is formed through a pipe like extension from the upper part of the cone,
having an independent pipe bolted thereto which extends below the bottom of the
cone grate towards the ashpit beneath it. Such independent pipe can be renewed
as required.
A column of fuel is supported in the independent or suspended pipe by a swing-
ing grate hung from its lower end or supported directly from the ashpit. Such
small grate is made as a tray or like shallow receptacle, and the whole or parts
of it are readily renewable. Or the small grate for supporting the central flue
column may be made as a circular cage or in any other desired form. Means
are provided for enabling the cage to be turned round from the exterior of the
furnace thereby clearing any clinker or accumulated dust from its grated bottom.
The cone can be readily lowered when desired and the clinker, and dust,
cleared from same.
In another arrangement I support the cone-shaped plate by means of hinged
or toggle supports so arranged that when the plate is in its working position the
supports stand vertically under it, but by a right and left hand screw and nuts,
or by other suitable means, the supports can be readily altered in position in such
a manner as to lower the cone for cleaning purposes. In a further arrangement I
attach lugs to each side of the cone plates and connect to the same a rod or bar placed
in a suitable channel in the brickwork lining to permit of their passing up through
the supporting angle piece, the brickwork, and the top plate of the producer, and
out through stuffing boxes to the exterior of the producer whence they are worked
by screwed nuts or other suitable means for the purpose of raising or lowering
the cone.

page_text: By my improved gas producer furnace I can ensure that the steam is passed
through a solid body of fuel of small dimensions but of considerable depth in
proportion to its diameter or area, before it enters the main body of the fire above
it, and thus the steam is thoroughly and effectually decomposed. The conical
shape of the plate or furnace bottom is also favourable to the deposit of clinker
in a position where it can do no harm by choking the fire, as a crinker, with my
furnace, will run down the cone and be deposited at the sides and away from the
orifice through which the air and steam is supplied to the producer.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham,
Agents for the Applicant.
Improvements relating to Furnaces or Fire-grates for Gas Producers
and for like purposes.
I, JOHN HENRY WALKER, of Penleigh House, Cotham Grove, in the City of
Bristol, Engineer, 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 of improvements relating to furnaces for gas producers
and for like purposes, my object being to so construct and arrange such furnaces
as to increase their efficiency and durability and to avoid the trouble commonly
experienced with clinker and through unequal burning of the fuel.
In the accompanying sheet of explanatory drawings to be hereinafter referred to.
Figure 1 is a sectional elevation of a gas producer furnace constructed and
arranged in accordance with my invention."
Figure 2 is a plan of the conical grate of the furnace.
Figure 3 is an elevation showing a modified method of supporting and of
raising and lowering the conical grate.
The same reference letters in the different views indicate the same parts.
In the application of my invention to a gas producer or producer furnace such as
shown at Figure 1, I support the fire-brick lining A in the usual manner by an angle
ring and plate 13 attached to the steel or iron casing C, leaving a chamber D in the
bottom of the producer of sufficient depth to accommodate my improved furnace
plate or cone grate. Such grate consists of a cone shaped casting E (Figures 1 & 2)
which when the producer is in operation fits up close to the plate B supporting the
lining. The plate B has either a bevelled edge to fit the angle of the coned casting,
or, as shown in Figure 1, the edge may be made flat on the under side, and the
coned casting provided with a flange to fit under the plate in such a manner as
to prevent air from entering the furnace other than through the central aper-
ture formed through a pipe-like extension E from the upper part of the come E.
I sometimes make the extension E' as an independent pipe bolted to the cone
grate and extending below the bottom of the same towards the ashpit beneath it.
Such independent pipe can be renewed as required.
A column of fuel is supported in the pipe E by the auxiliary grate F hung from
its lower end, or supported directly from the ashpit. Such small grate is made
as a tray or like shallow receptacle, and the whole or parts of it are readily
renewable. Or the small grate for supporting the central flue column may be
made as a circular cage or in any other desired form. The cage has sometimes a

page_text: swivel connection with the cone and means are provided for enabling the cage to
be turned round from the exterior of the furnace thereby clearing any clinker
or accumulated dust from its grated bottom.
The cone is hinged at E2 and can thus be readily lowered when desired, and after
the clinker and dust has been cleared from same it is again raised to its working
position. By the provision of the swivel catch pin holes in the arm or bracket e,
the cone can be supported at varying heights during the clearing operation.
The loose liner E3 protects the cone E and can be readily renewed as it becomes
burnt away.
In another arrangement I support the cone shaped grate by means of hinged
or toggle supports as shown at Figure 3, so arranged that when the plate is in
its working position the supports stand vertically or nearly vertically under it,
but by a right and left hand screw and nuts, or by other suitable means, the
supports can be readily altered in position in such a manner as to lower the cone
for cleaning purposes.
In a further arrangement I attach lugs to each side of the cone plates and con-
nect to the same rods or bars arranged in suitable channels in the brickwork
lining, and with their upper ends passing out through stuffing boxes to the
exterior of the producer whence they are worked by screwed nuts or other suitable
means for the purpose of raising or lowering the cone.
By my improved gas producer furnace I can ensure that the steam is passekl
through a solid body of fuel of small dimensions but of considerable depth
in proportion to its diameter or area, before it enters the main body of the fire
above it, and thus the steam is thoroughly and effectually decomposed. The
conical shape of the grate or furnace bottom is also favourable to the deposit of
clinker in a position where it can do no harm by choking the fire, as the clinker,
with my furnace, will run down the cone and be deposited at the sides and away
from the orifice through which the air and steam is supplied to the producer.
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 that what I
claim is:-
In gas producers and like furnaces the use of a conical fire-grate provided with
a central aperture and so arranged in the producer or furnace as to permit of its
being readily raised and lowered, substantially as and for the purposes described.
2. In a gas producer or like furnace the combination of a conical fire-grate as E
having a pipe like extension as , with an auxiliary grate as F, substantially as
and for the purpose described and as illustrated.
3. An improved gas producer or like furnace having a fire-grate constructed and
rranged substantially as and for the purposes described.
Dated this 27th day of September 1898
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham,
Agents for the Applicant.