Improvements in Gas, Coke, or like Stoves, Furnaces, or Fire Holders.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Gas, Coke, or like Stoves, Furnaces, or Fire
Holders.
I, PERCY ROBERTS WILDE, of No. 23, Circus, Bath, in the County of Somerset, M.D.,
do hereby declare the nature of this invention to be as follows:-
--
My invention relates to certain improvements in gas, coke and other stoves,
furnaces or fire holders in which the rate of combustion is slow. The objects sought
to be attained are firstly: an improved process of combustion in such stoves or the
like, and secondly to eliminate to a great extent the deleterious properties of the
products of such combustion.
In carrying my invention into effect I provide an open trough or vessel in close
proximity to the stove, furnace or fire holder to which it is adapted, so that evaporation
of the fluid contents thereof may take place, and by convection be carried through
the mass, or pieces of solid material or substance subjected to slow combustion, in a
vaporous state, or state of extreme molecular division, so that said fluid in the state
of vapor is partly or wholly decomposed into its constituents and by mingling with,
and by chemical union with, the atmospheric air passing through the heated mass or
pieces hereinbefore referred to, causes the combustion to be more effective, and the
products thereof more innocuous than in such stoves, furnaces or fire holders as
hitherto made and used.
I may adapt this device to any form of stove or the like; such for instance as those
in which asbestos is used as a heat retaining or refractory substance capable of
radiation when heated by a gas burner or burners, or an ordinary coke, peat, lignite
or similar slow combustion fire, without materially altering the construction thereof.
I also provide a suitable reservoir or cistern placed in any convenient position above
the level of the evaporating vessel so that the latter may be fed from time to time
by means of a valve, or any automatic substitute therefor. I may also, for sanitary
purposes use a solution of any salts or volatile substance, fluid, or material in
combination with, or apart from a volume of water.
As a modification of the foregoing apparatus, I may enclose the fluid in such a
manner that it may be atomized under pressure by action of the heat, and produce
a similar or equivalent effect upon the point of combustion, and the products thereof.
A jet or spray of the finely divided fluid molecules is directed upon the required
point or surface, and I may employ the initial pressure caused by the heating of the
enclosed vessel, or may employ a jet of steam or heated air derived from any other
source, to atomize the fluid and project it into the centre of combustion for the
purposes named.
I may also use a steam generator placed in closed proximity to the centre of
combustion, and use a pipe, spray or wick to carry a jet or jets thereto, in combination
with a suitable fluid feeding device.
I do not confine myself to any particular construction, conformation, or arrange-
ment of the apparatus according to my said invention, since these may be modified to
suit various cases of adaptation, so that the essential features thereof are preserved ;
viz., the placing of a volume of water or any mixture or solution in the proximity of
CD 077

page_text: a slow combustion stove, furnace, or fire holder in such a manner that by pressure,
slow evaporation or as an atomized spray, said fluid may be caused by convection or
direct pressure to impinge upon and assist combustion at the point thereof, and also
reduce the effect of the products of said combustion from a sanitary point of view.
Dated this 30th day of January 1897.
Improvements in Gas, Coke, or like Stoves, Furnaces, or Fire
Holders.
I, PERCY ROBERTS WILDE, of No. 23, Circus, Bath, in the County of Somerset,
M.D., 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 :-
My invention relates to certain improvements in gas, coke, or other stoves,
furnaces or fire holders in which the rate of combustion is slow. The objects sought
to be attained, are firstly, an improved process of combustion in such stoves or the
like, and secondly, to eliminate to a great extent the deleterious properties of the
products of such combustion.
In order that my invention may be the better understood I have appended the
accompanying sheets of drawings, in which Figure 1 is a sectional elevation of a gas
stove with an atmospheric burner arranged according to my said invention.
Figure 2 is an elevation drawn to a larger scale of part of the water pipe, and a
diffuser or atomizer, and Figure 3 is a sectional elevation of the nozzle and wick.
Figure 4, Sheet 2 is a sectional elevation of a modification, and Figure 5 is a section
of the same upon the line A B. Similar letters of reference indicate corresponding
parts throughout the several views.
In the description of Figures 1, 2, and 3 of the drawings hereto appended I
describe an ordinary gas stove by way of illustration, and Figures 4 and 5 are
applicable to any slow combustion grate or stove.
In carrying my invention into effect I construct a stove or the like, with
sides A A¹ base B and top T Figure 1. An atmospheric burner a is fitted upon the
base B, or any other device for producing heat by slow combustion. Said burner
with multiple orifices may be surrounded by blocks of asbestos or other refractory
substance or material, or I may dispense with the same and use the burner directly
as shown by the drawing. The main flue or chimney C passes through a water
tank W parting in transit with the products of combustion of the greatest density by
the absorption of the water surface, and being diverted as shown by the arrows,
which indicate the path throughout. The heated air and products of combustion
now pass upwards by convection through the flues F F¹ over the surface of a second
water tank W and are emitted through the upper chimney or exit E. From the
upper water tank W₁ a pipe p controlled by a tap or valve vis led to an horizontal
tube or pipe w placed over the burner a or any kind of burner, flame, or source of
heat by the combustion of carbon, or a mass of heated material in close proximity
thereto. I may, however, connect the pipe p with the lower tank W, which is
preferable in some cases, since the quantity of water remaining in the pipe is less.
A series of wicks of asbestos, or other refractory substance of a porous nature are
arranged parallel to, and above the heated surface, said wicks x communicating
directly with the pipe w by a device shown by Figures 2 and 3. The opposite end
of said tube or pipe to terminates in an air tube y vertically attached to the structure

page_text: and carried above the level of the water in the tank W, if this be used for
feeding, or W in the other case. I have shown for purposes of better illustration
the pipe w above the burner a, but I prefer to place it in the same plane, and
parallel thereto, the wicks projecting at right angles into and above the flame.
Figure 2 is an elevation of a single wick nearest the junction with the vertical
supply tube p. Fig. 3 is a detailed view in section of the manner of holding the
wick x.
The branch pipe m is provided with a plug of asbestos n, which practically
controls the water supply, and the wick x is fitted in below it by compression or
other suitable means, or may form part of it. The air inlet to compensate the flow
of water is provided by the open end of the pipe y.
By convection the heated air and products of combustion rise from the fire,
represented for purposes of illustration by the burner a through the chimney C,
previously heating the wicks x and causing atomized water to flow, and be vaporized
and decomposed. The resultant products are carried through G over the surface of
the tank W which becoming heated, not only absorbs some of the denser products of
combustion but by slow evaporation allows of a further admixture of water in the
form of vapor with said products as they are carried upwards through the flues F FI
by convection. The open surface of W being of a lower temperature by reason of its
distance from the point of heat a, acts as a condenser and the water vapor with its
mingled products is here condensed into the fluid state. It is probable, since the
flame possesses greater luminosity than that of an ordinary burner that the
decomposition of water that takes place causes H, resulting therefrom to combine
with the CO resulting from combustion, thus forming carburetted hydrogen, and
the O set free renders said combustion more perfect. I may, for sanitary purposes
use a solution of any salts or volatile substances, fluids or materials, in combination
with the volume of water in W or W'. I may in some cases enclose either of said
tanks W W so that the flow and atomization may be subject to more
pressure.
or less
Referring now to the modification shown by Figures 4 and 5, Sheet 2, a stove
or the like a is backed by a casing A, holding a bent chamber M of porous
earthenware, with certain holes w in the bend, leading upwards past a centrally
suspended water tank W with an open top, and past porous earthenware baffle
plates m m m¹¹ to an exit or chimney E. The porous chamber M is surrounded
by water, which percolates through its sides. The products of combustion passing
into M from a, causes the temperature within the former to rise, thus increasing
the percolation or capillary flow, and causing atomization. As in the former case
of illustration, the products of combustion are carried upwards by convection, with
the decomposed water, heating the tank W and causing the water in it by
absorption and evaporation to neutralize the deleterious effects. Any moisture is
absorbed by the porous baffle plates m ml ml, and these again liberate the
atomized particles in the passage of the products of combustion as aforesaid.
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
First. In a stove, furnace or fire holder the method of, and means for injecting a
spray of atomized water upon the point or place of combustion substantially as and
for the purposes herein described with reference to the accompanying drawings.
Second. In a stove, furnace or fire holder, the employment and construction of a
wick or series of wicks in connection with a water supply, in combination with a flame
or heated surface, and arranged to impinge thereon substantially as described and
shown.
Third. In a stove, furnace or fire holder the arrangement of flues and tanks for
convection, evaporation, absorption and condensation, substantially as herein described
and shown by the appended drawings.
Fourth. In a stove, furnace or fire holder the employment and construction of a
bent porous tube and porous baffle plates within a flue, in combination with a water

page_text: tank or tanks, substantially as herein described with especial reference to Figures 4
and 5 of the appended drawings.
Dated this 28th day of September 1897.
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, London, E.,
Agent for the Applicant.