Improvements in Gas Stoves for Heating and Cooking Purposes.
Year: 1889

page_text: Date of Application, 15th Apr., 1889
Complete Specification Left. 15th Jan.. 1890-Accepted. 15th Feb. 1890
PROVISIONAL SPECIFICATION.
Improvements in Gas Stoves for Heating and Cooking Purposes.
I Captain THOMAS EDWARD CLARKE of Alcombe Côte, Dunster in the County of
Somerset, Justice of the Peace for Devon and Somerset, do hereby declare the
nature of this invention to be as follows:-
The object of this invention is to provide simple, cheap, and efficient apparatus for
heating and cooking by gas.
One of the strongest objections to the employment of such apparatus is the
disagreable smell which arises from the combustion of the gas while the apparatus
is in use.
According to my invention, I reverse the order of things, and so construct the
apparatus as to provide for a down draught by which the products of combustion
are drawn off to a flue or chimney.
In carrying out my invention, as applied to a heating stove, I employ two con-
centric cylinders of any suitable height, diameter, and material, so as to form an
annular chamber closed at the bottom. This chamber is connected at both ends to
a chimney or flue, the connection at the upper end being provided with means
whereby it may be closed when desired. At the top of the chamber, which is left
open, and just above the upper connection with the flue, I place a ring burner of
any construction. When it is desired to use the stove, the upper connection is
opened, and the gas is lighted. The hot air and products of combustion will pass
through the upper connection to the flue, and an upward draught will be established
in the flue, which will draw the cold air from the lower part of the stove. The
connection will then be closed, and the products of combustion will be drawn down-
wards through the annular chamber to the bottom connection, and thence to the.
flue. In this manner, all smell arising from the combustion of the gas will be
prevented from passing into the apartment, and a large heating surface is provided
round which the air will play.
Cold air may also be drawn into the central space, and will become heated by
contact with the inner cylinder.
The stove may have an ornamental top. For cooking purposes, the central space
will become an oven. In this case, I employ two rectangular vessels, the inner one,
forming the oven, and provided with a door. The hot air chamber is connected
with a chimney or flue, as before described.
The burner, of any suitable kind, is placed on the top and to one side, and when..
the draught is established, the heated products will pass in two streams round the.
oven to the flue, which will preferably be contained within the outer case, and thence
to the chimney.
While, for heating purposes, the greatest amount of radiation is required, for
cooking purposes, it is desirable to concentrate the heat. I therefore find it desirable
to enclose the stove in a suitable jacket, which will prevent radiation. Under
the stove I may place a plate warmer. If desired, I may use more than one
burner.
Dated this 19th dow of Anvil 1000

page_text: COMPLETE SPECIFICATION.
Improvements in Gas Stoves for Heating and Cooking Purposes.
I Captain THOMAS EDWARD CLARKE of Alcombe Côte, Dunster in the County of
Somerset, Justice of the Peace for Devon and Somerset, 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 relates to that class of gas stoves which are provided with a flue for
carrying off the products of combustion, and has for its object the utmost utiliza-:
tion of the heat produced by the gas flame, and the prevention of waste by the
premature escape of the beat up the flue.
In the accompanying drawing,
Fig. 1 represents in sectional elevation a gas heating stove embodying my invention
in its simplest form.
Fig. 2 is a sectional front view of a cooking stove constructed on similar
principles.
The heating stove shewn at Fig. 1 consists of a pair of concentric metal
cylinders A A', forming between then an annular chamber a, closed at bottom."
Near the top of the chamber a, is a ring burner B, with downwardly projecting,
jets. The bottom of the chamber is furnished with a flue C, which leads to the
open air, or to an ordinary chimney. It will thus be seen that when the stove is
lighted, and a draught created in the flue, the gas-flame and the products of com-
bustion are drawn down the full length of the stove before escaping, and by this
means an extended heating surfaces for the surrounding air is provided. The
draught may be obtained in the flue by means of a burner D therein, provided
with a separate stop cock, which can be ignited for a few minutes when the stove
is first lighted, and afterwards extinguished when no longer required.
E is a cover for the stove, which may be of an ornamental character, and is
preferably pierced or slotted to permit of the passage of a heated column of air. within
the cylinder A. e is a small cup forming part of the cover for holding water, to
maintain the moisture of the atmosphere of the apartment, if thought desirable. eis
a small plug closing a hole in the part of the stove, which it is convenient to provide
as a lighting hole.
In the cooking stove illustrated at Fig. 2, the principle of action is precisely similar.,
The stove is constructed of sheet iron or other suitable material, and consists, in
lieu of a pair of concentric cylinders, of a square box A within a rectangular.
casing. This box A forms an oven, and the outer casing A¹ the heating
space around it. The oven is provided in front with a door not shewn in the
drawing. A' is an air space which tends to prevent the radiation of the heat,
and all the parts are suitably bolted together, and mounted upon suitable feet. G is
a chamber forming the stove top, and in which the gas burners are situated. C is the
Alue inserted in the back of the casing A'. The space between the back of the
oven A and the back plate of the casing A', is divided off to form a separate
chamber, the only entrance to which is at F, beneath the oven. Thus, the flame
from the burner B must pass down the sides and beneath the oven in the course
indicated by the drawn arrows, before reaching the back, and escaping, as indicated
by the dotted arrows, to the flue. H'H' are a pair of burners situated on either side
of the oven, and capable of being lighted through suitably placed ignition holes, when
the heating of the lower portion only of the oven is required:
II are two burners situated in the stove top, over which are placed loose covers,
which can be removed when required, and replaced by a saucepan or other cooking
utensil. The burner B has also a similar loose cover." The burner I is preferably a
burner with the gas jets beneath, like the burner B, and is situated in a projecting
part of the stove top, so that the heat therefrom may be better utilized for grilling and
toasting, by placing the food to be cooked underneath upon a bracket or tray J, adjust-
able by means of the rod ; and set screw j¹, the underplate of the stove top being
removed at as indicated.
"

page_text: a is a ventilator in the back of the oven A, operated from the outside by the
rod a. The draught in the flue, on starting the stove, may be created by opening the
damper K by means of the rod k, and thereby temporarily making a direct communi-
cation between the chamber in the top of the stove and the flue, or a separate gas
flame in the flue may be temporarily lighted, as explained with reference to the
heating stove.
The space L, beneath the oven, may be used as a "hot plate,' to keep dishes warm,
and may be provided with a door, if required.
In cooking stoves thus constructed, all smell from the food being cooked is drawn
into the stove by the draught which sends the fumes of the gas up the flue, and thus
while the whole of the heat produced is made available, on account of the long traverse
of the products of combustion, nothing in the shape of an offensive odour can escape
into the room.
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 :-
Gas stoves for heating and cooking, wherein the products of combustion from the
flame are caused to travel in a downward or reverse direction, as hereinbefore explained,
before escaping to the flue, by which means the heat produced is made fully available
for cooking and heating purposes.
NEWTON & SON,
Agents for the Applicant.