IMPROVEMENTS IN CCAG
Year: 1882

page_text: LETTERS PATENT to George Edward Webster, C.E., of Nottingham in the town
and county of Nottingham, Engineer for an Invention of "IMPROVEMENTS IN
CCAG
PROVISIONAL SPECIFICATION left by the said George Edward Webster at
the Office of the Commissioners of Patents on the 14th October 1882.
GEORGE EDWARD WEBSTER, C.E. of Nottingham, in the town and county of
Nottingham, Engineer "IMPROVEMENTS IN GAS STOVES
"
In carrying out my improvements I use one or more gas fires (i.e. a long
atmospheric burner in front of a non-conducting brick of terra-cotta) so arranged
that the products of combustion pass into a chamber in which are fixed air-tubes,
and are so gradually cooled by radiation until they become heavier than the
atmosphere and escape by a down-draught into the outside air, in order to prevent
the variation arising from different pressures of gas I employ a governor, otherwise
the products are condensed. To obtain a cheerful appearance of the stove I fill in
the terra cotta back with asbestos upon which the flame plays and in front of
which I place strips of coloured glass, this in small stoves has also a cheerful, novel
and pretty effect and in such a stove as that known as the "Cosey "I replace the
wire gauze with such strips and by this means avoid the smell caused by a flame
burning on wire and produce in addition a cheerful appearance.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Edward Webster in the Great Seal Patent Office on the
14th April 1883.
GEORGE EDWARD WEBSTER C.E. of Nottingham in the town and county of
Nottingham, Engineer "IMPROVEMENTS IN GAS STOVES'
")
My invention in gas stoves consists of the arrangement of the parts, the parts
themselves and the stoves as completed and is as follows:-
For some time past gas stoves called in the trade "Coseys" and portable gas fires
have been made with a back of fire clay or non-conducting material and occasionally
asbestos fibre fastened in, the flame being supplied at the bottom by an atmospheric
burner, the asbestos and flame being also in some cases covered by an iron gauze,
in respect to these and similar stoves I place strips of coloured glass to give a
cheerful appearance. I am aware that glass is and has been used in gas stoves but
only in a class of stoves known as the "Depôse" stove and with oil stoves, and
not in connection with asbestos or fire brick gas fires, I also place the glass in
connection with a circular stove or fire and in this stove I use an atmospheric
burner which may also be used as a boiling stove and consists in having a cast
metal top or diaphragm with the holes through which the gas comes nearly cast in
and then drilled, in this top is fastened by the process of casting or screwing a pin
which by passing through the bottom of the stove securely fixes it in a cheaper and
more effective manner than at present adopted. On this stove I place asbestos
fibre let in or in the ordinary thread or interlaced in iron wires producing an
appearance of fire.
In larger gas stoves as in fact in all cases of consumption of gas I consider it of
the greatest importance to have the supply of gas regulated so that the proper
quantity of gas may be allowed to pass and no more and to accomplish this I
employ a suitable governor but have found it most advantageous to employ &
governor having a shield. The improved governor consists of a float in mercury
the float being of glass or other suitable material, and the gas is admitted above
the float exactly opposite to an ordinary governor; to ensure the effectual working
I use what may be called a conducting guard to conduct the gas on the actuating
float before allowing it to escape into the exit, this guard may be used with other
governors and increases the effectiveness besides preventing the liquid from entering
into the pipes.
In stoves of a larger description I employ the condensing properties of consuined
gas; it is usual to construct such stoves, as it might be described as a tripod or
three cylinders standing upon a base and the heat and consumed gas pass up one
cylinder into a chamber and down the other two in a state of vapour and at the
bottom in an actual state of liquid, while the part which is not condensed now
heavier than the atmosphere is passes outside the stove, but does not make the
room unpleasant as it does not ascend. In this class of stoves I introduce a
modification in the form of a stove constructed for the heat to pass up the centre
and into an outer cylinder; at the same time I have a current of heated air pass
through the flame and into the atmosphere, i,e, the stove consists of an inner and
an outer casing and midway in the inner casing is placed a hot air or ventilating
tube the products of combustion pass up the centre of the inner tube and then into
the outer tube in a similar manner to the tripod stoves above described. From
these stoves it is evident that the products of combustion may be made to escape
with a down-draught and if the escape is effected at a proper time the condensation
may be prevented and merely allow the products to escape into the atmosphere, to

page_text: effect this it is necessary to have a driving power by the combustion of the gas and
I accomplish this by having a row of jets burning into the chamber in front of an
asbestos brick.
In order that my said invention may be fully understood I will now more
particularly describe it by reference to the annexed sheet of drawings.
Figure 1, shows the gas fire with the strips of glass A, placed before it and
supported by two figures
Figure 2, shows the boiling stove on which I place the asbestos or fibrous basket
as described. C, is the cast top.
Figure 3, shows the stove in section, B, D, being the pin screwed or cast with C
and fastened at the bottom by the nut D
Figure 4, shows the improved governor in which T, T, is the mercurial trough in
which floats the float having connected to it the valve C, and the rod E, on which
to hang weights to regulate the supply. L, L, is the shield to prevent the gas from
passing direct through the exit b, and making it follow the direction of the
arrows a, a, as indicated and which is applicable to other makes of governors. D, is
a cap to obtain access to the valve. The description of the working is as follows;
the gas enters at a, passes through L, L, between the partition and the shield, and
escapes as shown by the arrow b.
Figure 5, shows the section of the stove for condensing in which b, b, is the gas
ring for burning the gas. p, p, shows the tube for conducting the pure air through
the heated portion in the direction of a, a. c, c, shows the direction of the consumed
gas and g, shows the opening at the bottom for the escape of the condensed
products of combustion; m, m, is the outer casing; t, t, is the inner casing.
In witness whereof I the said George Edward Webster have hereto set
my hand and seal this thirteenth day of April in the year of our Lord one
thousand eight hundred and eighty three