IM- PROVEMENTS IN HOT-AIR STOVES
Year: 1852

page_text: LETTERS PATENT to Joseph Cundy, of 21, Victoria Grove, Ken-
sington, in the County of Middlesex, for the Invention of "IM-
PROVEMENTS IN HOT-AIR STOVES."
Sealed the 2nd April 1853, and dated the 20th October 1852.
PROVISIONAL SPECIFICATION left by the said Joseph Cundy at
the Office of the Commissioners of Patents, with his Petition, oll
the 20th October 1852.
I, JOSEPH CUNDY, of 21, Victoria Grove, Kensington, in the County
of Middlesex, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN HOT-AIR STOVES" to be as follows:-
This Invention has for its object a peculiar construction of stove
composed of fire brick or clay, avoiding the use of metal in those parts
the air to be heated comes in contact with. The combination of parts
of which this stove is composed are a chamber built of fire brick,
within which the fire-place is contained, also constructed of fire bricks or
Jumps secured by an iron plate. The passage or flue for the products
of combustion is a little above the fire, but considerably below the top
of the chamber, so that there will be a resevoir of heat above the place
where the products of combustion pass off. The sides of the heating

page_text: chamber are composed or built of hollow bricks or tubes, up and outside
of which air to be heated passes; and by suitable valves and conduits
this air may be from the apartment or place where the stove is, or from
an external source. The hot chamber is built or enclosed in brickwork,
there being formed a space or compartment above the heating chamber,
into which all the heated air flows, and from which it is conducted in
such directions as may be required by suitable pipes or passages. When
this stove is to be used for causing the circulation of hot water as well
as for supplying heated air, the most convenient mode of arranging the
hot water apparatus is by having a vessel or vessels of water below
the fire (supplied from a cistern above), with rising pipes in recesses in
the lumps or bricks which make the sides of the fire-place, such pipes
either coming together and forming one circulating main, or being
used as separate circulating mains.
SPECIFICATION in pursuance of the conditions of the Letters Patent.
filed by the said Joseph Cundy in the Great Seal Patent Office,
on the 20th April 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, 1,
JOSEPH CUNDY, of 21, Victoria Grove, Kensington, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twentieth day of October, in the year
of our Lord One thousand eight hundred and fifty-two, in the six-
teenth year of Her reign, did, for Herself, Her licirs and successors, give
and grant unto me, the said Joseph Cundy, Fler special licence that I,
the said Joseph Cundy, my exccutors, administrators, and assigns, or
such others as T, the said Joseph Cundy, my executors, administrators,
and assigns, should at any time agree 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 HOT-AIR

page_text: STOVES," upon the condition (amongst others) that I, the said Joseph
Cundy, by an instrument in writing under my hand and scal, should
particularly describe and ascertain the nature of the said. Invention,
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 Letter's Patent.
NOW KNOW YE, that I, the said Joseph Cundy, do hereby declare
the nature of the said Invention, and in what manner the same is to bet
performed, to be particularly described and ascertained in and by the
following statement thereof (that is to say):
This Invention has for its object a peculiar construction of stove
composed of fire brick.or clay, avoiding the use of metal in those parts:
the air to be heated comes in contact with. The combination of parts"
of which this stove is composed are a chamber built of file brick,
within which the fire-place is contained, also constructed of fire bricks
or lumps secured by an iron plate. The passage or flue for the products'
of combustion is a little above the fire, but considerably below top of
the chamber, so that there will be a reservoir of heat above the place
where the products of combustion pass off. The sides of the heating
chamber are composed or built of hollow bricks or tubes, up and out->
side of which air to be heated passes; and by suitable valves and con-
duits this air may be from the apartment or places where the stove is,
or from an external source. The hot chamber is built or enclosed in
brick work. there being formed a space or compartment above the
heating chamber into which all the heated air flows, and from which it!
is conducted in such directions as may be required by suitable pipes or
passages. When this stove is to be used for causing the circulation of
hot water as well as for supplying heated air, the most convenient mode
of arranging the hot water apparatus is having a vessel or vessels of
water below the fire (supplied from a cistern above), with rising pipes in
recesses in the lumps or bricks which make the sides of the fire-place.
such pipes either coming together and forming one circulating main,
or being used as separate circulating mains.
And in order that my,
Invention may be more fully understood, and readily carried into effect,
I will proceed to describe the means pursued by me.
-

page_text: DESCRIPTION OF THE DRAWING.
Figure 1, is a vertical section, and Figure 2, a horizontal section of
a hot air stove constructed according to niy Invention, and having
combined therewith circulating pipes for hot water. In each Figure
the same letters of reference are used to indicate similar parts. a, is
the fresh air chamber, which may by suitable valves and passages be
made to communicate with the outer air, or with the air in the chamber
or place in which the stove is fixed; b, is the ash pit; c, are the fire
bars; d, are Welch lumps or lumps of burned fire clay surrounding the
fire; e, are the furnace frame and doors; f.f, are the rising or flow
pipes for the circulation of hot water. These pipes are to be in con-
nection with a suitable vessel or vessels kept supplied with water.
These parts will, however, be dispensed with when hot water apparatus
is not required. g, is the flue or passage for the smoke or products of
combustion leading to a chimney; h, is a tile of fire clay at the top of
the furnace; i, hollow bricks or tiles of fire clay; j, is the hot air
chamber; k, is the flue or passage to convey away the warm air; 1, is
a stone which covers the hot air chamber; m, is the external casing of
the stove made of bricks; n, return pipes leading to the water vessels
for the circulation of hot water; o, is the warm air space surrounding
the hollow bricks.
Having thus described the nature of my said Invention, and the
manner of performing the same, I would have it understood that I do
not confine myself to the precise details hercin described. But what I
claim is, the mode herein described of combining parts of a hot air stove.
In witness whereof, I, the said Joseph Cundy, have hereunto set
my hand and seal, this Eighteenth day of April, in the year of
our Lord One thousand eight hundred and fifty-three.
Witness,
JNO. ALCOCK.
JOSEPH CUNDY.