IMPROVEMENTS IN GAS STOVES
Year: 1853

page_text: LETTERS PATENT to Joseph Cundy, of 21, Victoria Road, Ken-
sington, in the County of Middlesex, for the Invention of
"IMPROVEMENTS IN GAS STOVES."
Sealed the 28th February 1854, and dated the 30th August 1853.
PROVISIONAL SPECIFICATION left by the said Joseph Cundy-at.
the Office of the Commissioners of Patents, with his Petition,.
on the 30th August 1853.
I, JOSEPH CUNDY, of 21, Victoria Road, Kensington, in the County
of Middlesex, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN GAS STOVES" to be as follows:--
This Invention consists of constructing the internal chamber of a
gas stove of fire clay or carthenware. The air which is to be heated is
caused to pass to the interior of such chamber, and to become heated
therein, and then to pass out at the upper or other convenient parts;
such chamber is placed within a double or divided chamber of metal.
The earthenware chamber is contracted at its lower end, and the heat
of the gas burner acts on such end and beats it; the heat and products
of combustion rise up outside of the earthenware chamber, which is, by
preference, made with channels to divide the heat and products equally
over the outer surface, and they pass away by a chimney to the outer

page_text: air. In order to prevent the onter metal casing becoming too
highly heated, and at the same time to withdraw air from the
apartment, room, or place in which the stove is located, there are
openings to allow the air to pass in between the outer and inner metal
casings, and thence by the smoke flue to the outer air.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Cundy in the Great Seal Patent Office
on the 28th February 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
JOSEPH CUNDY, of 21, Victoria Road, Kensington, in the County of
Middlesex, send greeting.
WHEREAS Her inost Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of August, in the year
of our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Joseph Cundy, Her special licence
that I, the said Joseph Cundy, my executors, administrators, and
assigns, or such others as I, the said Joseph Cundy, my executors,
adininistrators, and assigns, should at any time agreo with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN GAS STOVES," upon the condition (amongst others) that I, the said
Joseph Cundy, by an instrument in writing under my hand and seal,
should particularly describe and ascertain the nature of the said Inven-
tion, and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Joseph Cundy, do hereby
declare the nature of the said Invention, ar. 1 in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement thereof (that is to say):

page_text: This Invention consists of constructing the internal chamber of a' gas
stove of fire clay or earthenware. The air which is to be heated, is
caused to pass to the interior of such chamber, and to become heated
therein, and then to pass out at the upper or other convenient parts.
Such chamber is placed within a double or divided chamber of metal:
The earthenware chamber is contracted at its lower end, and the heat
of the gas burner acts on such end and heats it; the heat and products
of combustion rise up outside of the earthenware chamber, which is; by
preference, made with channels to divide the heat and products equally
over the outer surface, and they pass away by a chimney to the outer air.
In order to prevent the outer metal casing becoming too highly heated,
and at the same time to withdraw air from the apartment, room, or
place in which the stove is located, there are openings to allow the air to
pass in between the outer and inner metal casings, and thence by the
smoke fluc to the outer air.
Having thus stated the nature of my said Invention, I will proceed
to describe the manner of performing the same.
DESCRIPTION OF THE DRAWING.
The Drawing, Figure 1, shows a vertical section of
gas stove
constructed according to my Invention. I would, however, [remark
that the shape or form of the parts may be. varied without departing
from my Invention, so long as the peculiar arrangement or combination
of the parts be retained. Figure 2, is a horizontal section of the stove.
a, a, is the external case of the stove, which may be made either of
metal or any other suitable material having passages for air with a view
to produce ventilation in the room or place in which such a stove is
used. It will be seen that the air which passes to the interior of the
apparatus does not return into the room or place in which the stove is
situated. 6, is an inner case, which has openings at bottom and at
the top, so that air to support combustion of the gas from the burner c,
may pass from the room or chamber into the interior of the apparatus,
and not return, but pass away to a chimney, as will readily be under-
stood by reference to the Drawing, where the arrows indicate the
direction of the passage of air and products to the chimney. d, is the

page_text: air heating chamber, which is composed of fire clay or earthenware, the
air being supplied from the exterior of the room, chamber, or place
where the stove is situated. The gas heats the lower parts and exterior
of the compartment d, and the air so heated passes through openings
in the cover e, into the upper part of the apparatus, where, by means
of numerous holes, the air is to be divided into streams, and then
allowed to pass into the room or place where the stove is situated, as is
indicated by the arrows. I prefer to make the part d, of the stove
with exterior ribs d', outside so as to produce channels for the passage
of heated air and products from the gas.
Having thus described the nature of my Invention, and the manner
of performing the same, I would have it understood that what I claim
is, the combination of parts of a gas stove herein described.
In witness whereof, I, the said Joseph Cundy, have hereunto set
my hand and scal, this Twenty-eighth day of February, in the 1
year of our Lord One thousand eight hundred and fifty-four.
Witness,
J. G. TONGUE.
JOSEPH CUNDY. (L.S.)