IMPROVEMENTS IN GAs STOVES
Year: 1883

page_text: LETTERS PATENT to Alfred Julius Boult of the firm of W. P. Thompson &
Boult, Agents for Foreign Patent Solicitors, of 323 High Holborn in the
county of Middlesex, Engineer, for an Invention of "IMPROVEMENTS IN GAs
STOVES." A communication from Paul Géoffroy-Gomez, of Toulouse in the
Republic of France.
PROVISIONAL SPECIFICATION left by the said Alfred Julius Boult at the
Office of the Commissioners of Patents on the 14th March 1883.
ALFRED JULIUS BOULT of the firm of W. P. Thompson & Boult Agents for
Foreign Patent Solicitors of 323 High Holborn in the County of Middlesex,
Engineer, "IMPROVEMENTS IN GAS STOVES [a communication from 'Paul
Geoffroy-Gomez, of Toulouse in the Republic of France.]
"
This invention relates to improvements in Gas stoves which burn a mixture of
gas and air and in which the carbonic acid which is evolved is absorbed by
quick lime or the like.
The heat generator properly so called consists of a box made of cast iron or
other suitable material provided with a top which forms an inclined plane in
which are encased several rows of tubes and it constitutes the hearth of the stove.
This box may conveniently be divided into two compartments; air and gas
arrive simultaneously either into one compartment only or into both at the same
time according to the amount of heat required; this regulation is effected bý
opening more or less, by means of stopcocks, the gas supply pipes and by means
of a movable disc which serves as a regulator for the distribution of air in the two
compartments. This disc can be opened or closed by means of a screw
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otherwise.
Underneath the tubes, which serve as burners for the mixture of gas and air,
there is a sheet of wire gauze which prevents the flame penetrating into the box.
The gas issues and is ignited at the upper end of tubes which surmount a metal
D..

page_text: plate which forms the surface of the hearth; a layer of asbestos fibres is placed
on the tubes and serves still further to increase the heating capacity of the stove.
The stove has a casing made of fire clay; it serves to concentrate the heat and
to increase the radiation. The top of this piece terminates preferably in an archi
at the centre of which is provided a box likewise made of fireclay and encased in
the arched part and projecting below and within the same
In the centre there is a sleeve of the same material closed at the top, the exterior
and interior walls are pierced by a large number of holes which allow the products
of combustion to pass when they are carried away by the current of warm air, and
these are thus purified by passing through a layer of quick lime (or any other
material which has the property of absorbing carbonic acid) contained in the box
in the arch

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent and
of an Order of the Lord Chancellor filed by the said Alfred Julius Boult in
the Great Seal Patent Office on the 29th September 1883.
ALFRED JULIUS BOULT of the firm of W. P. Thompson and Boult, Agents for
Foreign Patent Solicitors, of 323 High Holborn, in the County of Middlesex,
Engineer "IMPROVEMENTS IN GAS STOVES " a communication from Paul
Geoffroy-Gomez of. Toulouse in the Republic of France
This invention relates to improvements in gas stoves which burn a mixture of
gas and air and in which the carbonic acid which is evolved by quick lime or the
like.
This stove is shewn as a whole in figure 8. and in details in figures 1, 2, 3, 4.
5. 6. 7
The heat generator is shewn in plan in figure 1. in elevation in figure 2 and in
section in figure 3.
It consists of a box made of cast iron or other suitable material provided with
a top which forms an inclined plane in which are encased several rows of tubes and
it constitutes a semi cylindrical furnace surface.
Figure 1. which is a plan of the furnace A. B. C. D. shews the arrangement of
these tubes on the box.
Figure 2. elevation on line A. B. shews the box closed by the top or
surrounded by the tubes.
and
Figure 3. section on line C. D. shows the box divided into two compartments as
will be seen in this figure 3. air and gas arrive simultaneously either into one
compartment only or into both at the same time according to the amount of heat
required; this is effected by opening more or less by means of stop cocks the gas
pipes shewn in figure 1 and by means of a solid moveable disc L. shewn in
figure 3. which serves as a regulator for the distribution of air in the two
compartments.
.
This disc can be opened or closed by means of a screw also shown in the said
figure.
Underneath the tubes which serve to burn the mixture of gas and air there is
shown a sheet of wire gauze which prevents the flame penetrating into the
said box.
In the total view figure 8. an arrow indicates how the gas arrives, into the box
it is ignited at the upper end of tubes which surmount by 1 centimetre a model
plate which forms the surface of the hearth and which is shown on line I. J. in
figure 6. Lastly of asbestos fibres is placed on the tubes and serves still further to
increase the heating capacity of the stove.
Figures 4 and 5 represent the upper part of the stove or reflector resting on a
pedestal enclosing the heat generator.
This is a piece made of fire clay and serves to concentrate the heat and to increase
the radiation. The top of this piece terininates in an arch at the centre of which is
provided a box likewise made of fire clay and encased in the arched part and
projecting below and within the same to about 15 centimetres.
It may be round oval or square according to the arrangement which it may be
suitable to adopt therefor.
The centre of this box is occupied by a sleeve of the same material closed at the
top the exterior and interior walls are pierced by a large number of holes shown
at K. in figure 5.
These holes allow the products of combustion to pass when they are carried
away by the current of warm air and are thus purified by passing through a layer

page_text: .
of quick lime or any other material which has the property of absorbing carbonic
acid
Figure 7. is a plan on line G. H. it shows the purifier placed in the arch of the
reflector of fire clay.
Having now described the nature of the said invention and the manner of
performing the same as communicated to me by my foreign correspondent I wish
it to be understood that I claim and desire to protect under the hereinbefore in
part recited Letters Patent :
The novel portions of the said invention substantially as set forth and shown in
the accompanying drawings.
In witness whereof I have hereunto set my hand and seal this fourteenth day
of September in the year of Our Lord One thousand eight hundred and eighty
three.