Year: 1886

page_text: I, HUGH STEVEN, Iron Founder, Milton Iron Works, Glasgow, and JAMES RAMSAY,
Cartwright of 202 Rutherglen Road, Glasgow, do hereby declare the nature of this
invention to be as follows:-
This invention relates to gas stoves and has for its objects improvements in
construction whereby the heat generated by combustion of the gas consumed is
utilised to obtain a high degree of efficiency and the employment in such stoves
of an improved neutralizing agent for absorbing or trapping the noxious waste
gases resulting from the combustion of the gas in cases in which an outlet to a
chimney is not available.
As adapted for cooking purposes the improved gas stove constituting this
invention consists of an oven or series of ovens covered by a hot plate in the form
of an ordinary cooking range, but differing therefrom in respect that the gas fire
by which the oven or ovens is or are heated instead of being within the body of
the range is formed by a series of gas jets or burners within a fire chamber in front
of the oven. The fire chamber is of box like shape and rests immediately over the
floor while the bottom of the oven is at a slightly higher level than the top of the
fire chamber and is heated by the products of combustion passing through a
shallow flue thereunder. The oven is double cased or jacketed at front, back and
top as well as underneath, the jacket space forming a flue for the fire gases which
are directed either up the back of the range towards the outlet at or near the hot
plate or up the front space by operating a double grating or damper at the top of
the front flue space.
When this damper is open the fire gases pass directly from the fire chamber in
front of the front flue or jacket and over the top of the oven thereby heating the
hot plate or top of the range and giving a top heat for the oven, but when the
damper is closed the gases pass by the flue under the oven and up the back flue to
the outlet thereby heating the bottom of the oven and a hot closet formed in the
lower part of the range under the bottom of the oven and the flue.
The heating flues terminating at the upper and rear part of the range may lead
directly into a stove pipe or flue connected to a chimney, but in order to adapt the
stove for use in cases where a chimney flue is not available an outlet is formed in

page_text: the back of the top plate and over it is placed a box formed with a grating in the
bottom and containing a quantity of pumice stone or lime through which the waste
gases pass and by means of which the noxious fumes are absorbed or trapped and
prevented from passing into and vitiating the atmosphere.
In the top of the fire chamber at the lower front part of the range suitable fire
covers or openings are provided for the reception of kettles sauce-pans or other
culinary utensils. Such fire covers are fitted over the gas fires of which there may
be several or one only. Doorways are formed in front of the fire chamber to give
access to the gas burners, and to the lower part of the chamber in which cooking
utensils containing food stuffs are placed to be broiled or baked by heat radiated
downwards or outwards from the fire.

page_text: We, HUGH STEVEN, Iron Founder, Milton Iron Works, Glasgow, and JAMES
RAMSAY, Cartwright of 202 Rutherglen Road, Glasgow, 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 gas stoves and has for its objects improvements in
construction whereby the heat generated by combustion of the gas consumed is
utilised to obtam a high degree of efficiency and the employment in such stoves
of an improved neutralising agent for absorbing or trapping the noxious waste
gases resulting from the combustion of the gas in cases in which an outlet to a
chimney is not available.
As represented in end elevation at figure 1, in front elevation at figure 2, and in
transverse vertical section at figure 3 the improved gas stove constituting this
invention as adapted for cooking purposes consists of an oven A (or series of ovens)
covered by a hot plate B, in the form of an ordinary cooking range, but differing
therefrom in respect that the gas fire by which the oven or ovens is or are heated
instead of being within the body of the range is formed by a series of gas jets or
burners C within a fire chamber D in front of the oven. The fire chamber D is of
box like shape and rests immediately over the floor while the bottom of the oven A
is at a slightly higher level than the top of the fire chamber and is heated by the
products of combustion passing through a shallow flue E thereunder. The oven is
double cased or jacketed at front, back and top as well as underneath, the jacket
space F, F, forming a flue for the fire gases which are directed either up the back
of the range at F, towards the outlet at or near the hot plate B, or up the front
space F by operating a double grating or damper G at the top of the front flue
space.
When the damper G is open the fire gases pass directly from the fire chamber D
in front, up the front flue or jacket F, and over the top of the oven A thereby
heating the hot plate B or top of the range and giving a top heat for the oven,
but when the damper is closed the gases pass by the flue E under the oven and up
the back flue F, to the outlet H, thereby heating the bottom of the oven and a hot
closet I formed in the lower part of the range under the bottom of the oven and
the flue.
The heating flues F, F¹, terminating at the upper and rear part of the range may
lead directly into a stove pipe or flue connected to a chimney, but in order to adapt
the stove for use in cases where a chimney flue is not available the outlet H is
formed in the back of the top plate and over it is placed a box J formed with a
grating in the bottom and containing a quantity of pumice stone either alone or in
admixture with lime, through which the waste gases pass and by means of which
the noxious fumes are absorbed or trapped and prevented from passing into and
vitiating the atmosphere. This feature of improvement is applicable in connection
with other forms of gas cooking and heating stoves.
In the top of the fire chamber D at the lower front part of the range suitable
fire covers or openings K are provided for the reception of kettles, saucepans or

page_text: other culinary utensils. Such fire covers are fitted over the burners C forming
the gas fires of which there may be several or one only. In the present example
the stove is provided with two gas fires to which the gas is supplied by pipes k
connected to the burner tube C. Doorways L are formed in front of the fire
chamber D to give access to the gas burners C and to the lower part D1 of the
chamber in which cooking utensils containing food stuffs are placed to be broiled or
baked by heat radiated downwards or outwards from the fire.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed we declare that what
we claim is:-
1. The combination of parts constituting the improved gas stove substantially as
herein before described with reference to the drawings annexed.
"
2. The employment in connection with the outlet from a gas stove of pumice
stone either alone or in admixture with lime as a means for absorbing or trapping
the noxious fumes resulting from combustion of the gas, substantially as herein
set forth.