IMPROVEMENTS IN FURNACES FOR BURNING LIME, PLASTER, CEMENTS, CERAMIC PRODUCTIONS, AND FOR SIMILAR PURPOSES
Year: 1872

page_text: LETTERS PATENT to Henri Adrien Bonneville, of the British and
Foreign Patent Offices, 18, Rue de la Chaussee d'Antin, Paris,
France, and 6, Piccadilly, in the County of Middlesex, Patent
Agent, for the Invention of "IMPROVEMENTS IN FURNACES FOR BURNING
LIME, PLASTER, CEMENTS, CERAMIC PRODUCTIONS, AND FOR SIMILAR PURPOSES."
-A communication from Charles Avril, residing at Montchanin,
Trance Manufacturer
PROVISIONAL SPECIFICATION left by the said Henri Adrien Bonneville
at the Office of the Commissioners of Patents, with his Petition, on
the 8th November 1872.
I, HENRI ADRIEN BONNEVILLE, of the British and Foreign Patent
Offices, 18, Rue de la Chaussée d'Antin, Paris, France, and 6, Piccadilly,
in the County of Middlesex, Patent Agent, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN FURNACES FOR BURNING LIME,
PLASTER, CEMENTS, CERAMIC PRODUCTIONS, AND FOR SIMILAR PURPOSES," commu-

page_text: me by
person in, ance
Manufacturer, to be as follows:-
The Invention relates to the construction of kilns or furnaces for
burning lime, plaster, cements, and for baking ceramic productions or
articles of a like nature, and consists of an improved and simplified
arrangement superior to anything of the kind in general use.
The principles upon which the Invention is based are the following:-
1stly. The useful application of the outer air or of heated air derived
from compartments in which the burning or baking is already completed
to the combustion of the materials treated.
2dly. The more complete distribution and dissemination of the
combustible employed throughout the mass of materials treated, the
multiplication of heat producing centres, and the more perfect com-
bustion of the fuel employed by means of grates fed from the top of the
furnace or kiln.
3dly. The means of employing the said grates or gratings both for
the introduction of hot or cold air for the purpose of combustion, and
for the expulsion of the same after burning.
4thly. The application of a single canal for feeding the grates and
giving off the products of combustion.
5thly. The utilisation of the heat derived from compartments in
which the burning or baking is operated for any suitable industrial
purpose without diminishing the economy of fuel in the treatment of
the remaining compartments.
These principles are applied in the manner herein-after described :-
The kiln or furnace is composed of two parallel galeries A, B, A¹, B³,
connected at their extremities by the passages or canals C, D, C¹, D¹,
and of a passage or canal E, F, communicating with two chimneys
m and n placed one at each end. The central canal serves alike for the
passage of the smoke and the introduction of the air necessary for
combustion. To fulfil this double object the said canal is provided at
suitable distances with register plates K, K³, by operating which it com-
municates either with the outer air entering by the doors L, L', placed.
at its extremity, or with the heated air of the compartments in which
the burning is operated, arriving through the transversal passages corre-
sponding to the grates shown in section at M, N. These transversal

page_text: passages lead into the canal E, F, and are closed by bell-shaped register
plates I, I, I", worked from the top of the kiln. The gratings are
perpendicular to the axis of the kiln and occupy its whole width, being
fed from the top of the kiln by openings formed at S, S¹, S", in the arch
and closed by means of cast-iron doors. The kiln is divided into a
suitable number of compartments by fire-brick partitions F, F, F",
provided with openings which are closed by means of sheet-iron doors
or register plates. When the burning or baking is completed in one
compartment, the register in front of it is lowered, leaving it completely
isolated, and the heat is drawn out by the passages of the grates H, H',
to be utilised either for treating the contents of the remaining com-
partments or for any suitable industrial purpose. In the latter case the
remaining grates are fed with air from the outside as above described,
and they do not in any way suffer from the effects of the isolation of the
compartments in which the burning has been operated.
To start the kiln or furnace, one of the passages C, D, connecting the
extremities, is arranged in such a manner that it opens out the whole
width of the kiln and is provided with gratings or bars.
A door P is formed in the lateral covering or wall of the kiln, and
through it the fire is fed from the side until the temperature of the
kiln is sufficiently high to admit of feeding it with fuel from the
top.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henri Adrien Bonneville in the Great Seal Patent
Office on 17th April 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRI
ADRIEN BONNEVILLE, of the British and Foreign Patent Offices, 18, Rue
de la Chauseé d'Antin, Paris, France, and 6, Piccadilly, in the County
of Middlesex, Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria by Her
Letters Patent, bearing date the Eighth day of November, in the year
of our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Henri Adrien Bonneville, Her special

page_text: licence, that I, the said Henri Adrien Bonneville my executors, ad-
ministrators, and assigns, or such others as I, the said Henri Adrien
Bonneville, 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 FURNACES FOR BURNING LIME, PLASTER, CEMENTS, CERAMIC
PRODUCTIONS, AND FOR SIMILAR PURPOSES," communicated to me by Charles
Avril, a person resident at Montchanin, France, Manufacturer, upon the
condition (amongst others) that I, the said Henri Adrien Bonneville,
my executors 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 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 Henri Adrien Bonneville, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The Invention relates to the construction of kilns or furnaces for
burning lime, plaster, cement, and for baking ceramic productions or
articles of a like nature, and consists of an improved and simplified
arrangement superior to anything of the kind in general use.
The principles upon which the Invention is based are the following:
1. The useful application of the outer air or of heated air derived
from compartments in which the burning or baking is already completed
to the combustion of the material treated.
2. The more complete distribution and dissemination of the com-
bustible employed throughout the mass of materials treated, the mul-
tiplication of it producing centres, and the more perfect combustion
of the fuel employed by means of grates fed from the top of the furnace
or kiln.
3. The means of employing the said grates or gratings both for the
introduction of hot or cold air for the purpose of combustion, and for
the expulsion of the same after burning.

page_text: 4. The application of a single canal for feeding the grates and giving
off the products of combustion.
5. The utilisation of the heat derived from compartments in which the
burning or baking is operated for any suitable industrial purpose without
diminishing the economy of fuel in the treatment of the remaining
compartments.
'
The principles are applied in the manner herein-after described,
reference being had to the accompanying Drawings in which Fig. 1
represents a sectional elevation of a kiln constructed according to the
Invention by the line A, B, C, D, E, F, Fig. 3; Fig. 2 is a sectional
elevation of the same by the line M, N, Fig. 3; and Fig. 3 is a plan
view of the same by the lines L, K, and G, H, Fig. 2. The kiln or
furnace is composed of two parallel galleries A, B, A¹, B¹, connected at
their extremities by the passages or canals C, D, C¹, D', and of a passage
or canal E, F, communicating with two chimneys m and n placed one at
each end. The central canal serves alike for the passage of the smoke
and the introduction of the air necessary for combustion. To fulfil this
double object the said canal is provided at suitable distances with
register plates K, K¹, by operating which it communicates either
the outer air entering by the doors L, L', placed at each extremity or
with the heated air of the compartments in which the burning is
operated, arriving through the transversal passages corresponding to the
grates shown in section at M, N. These transversal passages lead into
the canal E, F, and are closed by bell-shaped register plates I', I",
worked from the top of the kiln. The gratings are perpendicular to
the axis of the kiln and occupy its whole width, being fed from the
top of the kiln by openings formed at S¹, S¹, S", in the arch enclosed by
means of cast-iron doors. The kiln is divided into a suitable number of
compartments by fire-bricks partitions F, F", F", provided with openings
which are closed by means of sheet-iron doors or register plates. When
the burning or baking is completed in one compartment, the register in
front of it is lowered leaving it completely isolated, and the heat is
drawn out by the passages of the grates H, H', to be utilised either for
treating the contents of the remaining compartments or for any suitable
industrial purpose. In the latter case the remaining grates are fed with
air from the outside, as above described, and they do not in any way
suffer from the effects of the isolation of the compartments in which the
burning has been operated.

page_text: To start the kiln or furnace one of the passages C, D, connecting the
extremities is arranged in such a manner that it opens out the whole
width of the kiln, and is provided with gratings or bars.
A door P is formed in the lateral covering or wall of the kiln, and
through it the fire is fed from the side until the temperature of the
kiln is sufficiently high to admit of feeding it with fuel from the top.
Having thus described the nature of the said Invention, and the
manner of carrying it into effect, I would have it understood that what
I claim and desire to secure by the said Letters Patent is, a kiln or
furnace for burning lime, plaster, cement, ceramic productions, and for
similar purposes, built substantially as above described and represented
in the accompanying Drawings.
In witness whereof, I, the said Henri Adrien Bonneville, have hereto
set my hand and seal, this Thirty-first day of March, in the year
of our Lord One thousand eight hundred and seventy-three.