IMPROVEMENTS IN GAS-FURNACES FOR HEATING STEAM-BOILERS AND FOR SIMILAR PURPOSES to be as follows:
Year: 1884

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings, London, in the County of Middlesex do hereby declare
the nature of said invention for "IMPROVEMENTS IN GAS-FURNACES FOR HEATING
STEAM-BOILERS AND FOR SIMILAR PURPOSES to be as follows:-
"
This Invention relates to gas-furnaces for beating steam-boilers and for other
beating purposes, and consists essentially in a peculiar combination and arrange-
ment of coal-boxes, slanting grates, and gas-combustion chambers as hereinafter
described.
According to one arrangement which is especially applicable for heating steam-
boilers the furnace is constructed with two slanting grates connected in the middle
and supplied by one coal chamber.
Between the coal chamber and the fire brick arches of the fire chamber is a free
space or flue for admitting air. The air entering the said flue passes to the right
and left of the fire box direct on to the burning fuel below the said arches. The
gas generated is constantly equal and the generation of gas is only interrupted
when the fire-bars are being cleaned.
The said fire-bars have vertical and horizontal air inlets. In the front plate,
above the fire-bars, openings are constructed to allow the fire-bars to be cleaned at
intervals.
At the foot of the fire-bars the ashes and slack accumulate, but a suitable door is
provided through which they may be discharged.
The whole furnace is surrounded by an iron case mounted on wheels, and can be
withdrawn when repair is required.
As soon as the furnace is placed under the boiler the joints are closed with clay
and the arch over the front plate is closed with brick work,

page_text: According to another modification, which is specially applicable for heating
brewing pans, the furnace differs from that hereinbefore described in the con-
struction of the slanting grate, as well as in the manner of introducing the air
required for combustion. A flue is provided to take the flame direct into the
chimney when the brewing pan is empty, the main draught-regulator being then
closed and the regulator leading into the chimney opened.
I sometimes combine the improvements hereinbefore described, the arrangement
in this case being especially applicable for heating double-flued Cornish or
Lancashire boilers.
Dated this Eighth day of January 1884.

page_text: G indicates a chimney flue intended to take. the heat direct into the chimney
when the pan is empty, the main draught regulator being then closed and the
regulator leading into the chimney opened.
H indicates the ash-pit, I-the opening for the admission of air, K openings for
cleaning the fire-bars, and L the door for cleaning the grate, the said door being
perforated to admit air into the chamber A to consume the gas.
M indicates the door of the coal-chambers, N an air inlet, O an inspecting tube,
and P the bottom of a pan or boiler.
Figure 9 shews a gas-furnace in which the arrangements shewn in the other
Figures of the drawings are suitably combined. In this Figure b indicates a form
of coal-box similar to that shewn in Figures 2 and 3, whilst D D are coal-chambers
similar to those shewn in Figures 6 and 7. B B are slanting grates. A A are the
gas combustion chambers, and F F are flues.
For the purpose of enabling the furnace shewn in Figure 9 to be shifted for
repairs it is provided with anti-friction balls running on rails.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
J
First The combination of the coal-box or coal-chamber b, the slanting. grates c,
the air-flue e e, and the gas combustion chamber A A, substantially as described.
Second The combination of the coal-chambers D D, the slanting grates B B, and
gas combustion chamber A, substantially as described.
.
Third The combination of the coal-boxes or coal-chambers D D and b, the
slanting grates B B, and the gas combustion chambers A A, substantially as
described.
.
:
Fourth The combination of the furnace described, either with the wheels and
rails, substantially as shewn in Figures 1 and 3, or with the anti-friction balls and
rails as shewn in Figure 9, for the purpose of enabling the furnace to be shifted for
repairs.
Deted this 9th day of October 1981
HASELTINE, LAKE & Co.,
For the Applicant.