IMPROVEMENTS IN FURNACES AND FIRE-PLACES, HAVING FOR OBJECT THE CONSUMPTION OR PREVENTION OF SMOKE
Year: 1863

page_text: LETTERS PATENT to Jerome Jean Pôtel, of St. Quentin, in the Empire
of France, Engineer, for the Invention of "IMPROVEMENTS IN FURNACES
AND FIRE-PLACES, HAVING FOR OBJECT THE CONSUMPTION OR PREVENTION OF
SMOKE."
Sealed the 25th September 1868, and dated the 2nd April 1863.
PROVISIONAL SPECIFICATION left by the said Jerome Jean Pôtel
at the Office of the Commissioners of Patents, with his Petition, on
the 2nd April 1863.
I, JEROME JEAN POTEL, of St. Quentin, in the Empire of France, Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
FURNACES AND FIRE-PLACES, HAVING FOR OBJECT THE CONSUMPTION OR PREVENTION
OP SMOKE," to be as follows:-
My Invention is applicable to fire-places of all kinds, whether for furnaces,
domestic stoves, or others.
My Invention consists in constructing fire-places and furnaces with no
outlet for the products of combustion except through apertures made at an
angle of 45°, more or less, in a bridge or wall at the back of the fire-place.
The gases evolved from the coal or other fuel used, mixed with atmospheric
air, pass through or over the incandescent fuel, then through the apertures in

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Jerome Jean Pôtel in the Great Seal Patent Office on
the 2nd October 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JEROME
JEAN PÔTEL, of Saint Quentin, in the Empire of France, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of April, in the year of our
Lord One thousand eight hundred and sixty-three, in the twenty-sixth
year of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Jerome Jean Pôtel, Her special licenco that I, the
said Jerome Jean Pôtel, my executors, administrators, and assigns, or
such others as I, the said Jerome Jean Pôtel, my executors, adminis-
trators, 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 FURNACES AND FIRE-PLACES, HAVING FOR OBJECT
THE CONSUMPTION OR PREVENTION OF SMOKE," upon tho condition (amongst others)
that I, the said Jerome Jean Pôtel, my exccutors or administrators, by
an instrument in writing under my, or their, or one of their hands and seals,
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 tho 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 Jerome Jean Pôtel, do hereby
declare the nature of my said Invention, and in what mauner the same is to
be performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the Drawings hereunto
annexed, that is to say:-
My Invention is applicable to fire-places of all kinds, whether for furnaces,
domestic stoves, or others.

page_text: My Invention consists in constructing fire-places and furnaces with no
outlet for the products of combustion except through apertures made at an
angle of 45°, more or less, in a bridge or wall at the back of the fire-place.
The gases evolved from the coal or other fuel used, mixed with atmospheric
air, pass through or over the incandescent fuel, then through the apertures in
the bridge. The gases pass through these apertures in a state of flame, and
are used for heating purposes at the back of the bridge.
Figure 1 of the accompanying Drawings is a section of a stove suitable for
heating apartments, and constructed according to my Invention. A is the
fire-place, and B a bridge or wall at the back thereof with apertures C made
therein at an angle of 45°. Atmospheric air is admitted to the stove through
an opening D; part thereof mixes with the gases evolved from the coal or
other fuel, passes through or over the incandescent fuel and through the
apertures C, while the remainder passes through a channel E and through
vertical apertures F in the bridge B, when it mixes with the air and gases
coming through the apertures C, and is carried off by the flue or chimney.
Figure 2 is a section of a cooking stove with my improvements applied
thereto. A is the fire-place; G, a reservoir for the coal or other fuel; and B,
a bridge or wall with apertures C through the same. Atmospheric air
entering through the reservoir G becomes mixed with the gases evolved from
the incandescent fuel, and passes therewith through the apertures C, round
the oven H, and thence into the flue or chimney I.
Figure 3 is a longitudinal section of a boiler furnace constructed according
to my Invention, and Figure 4 is a transverse section through the line c, d, of
Figure 3. Atmospheric air enters underneath and through the grate bars A,
and mixing with the gases evolved from the burning fuel impinges against the
under side of a fire-brick arch or bridge B, then passes partly through
apertures C, C, in the sides of the arch, and along the upper side thereof, as
indicated by the arrows, and partly through apertures D in the bridge E at
the back of the furnace.
Figure 5 is a longitudinal section, and Figure 6 a transverse section of a
boiler furnace of somewhat different construction to that last described. The
course taken by the air and products of combustion is indicated by the
arrows.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim constructing
furnaces and fire-places with no outlet for the products of combustion except
through apertures made at an angle of 45°, more or less, in a bridge or wall at

page_text: the back of the fire-place, substantially as herein-before described and illus-
trated in the accompanying Drawings.
In witness whereof, I, the said Jerome Jean Pôtel, have hereunto
set my hand and seal, this Twenty-ninth day of September, One
thousand eight hundred and sixty-three.