IMPROVEMENTS IN THE CONSTRUCTION OF PROVISIONAL SPECIFICATION CONSTRUCTION OF FURNACES
Year: 1853

page_text: LETTERS PATENT to Peter Armand Le Comte de Fontaine
Moreau, of the English and Foreign Patent Office for Inventions,
4, South Street, Finsbury, London, and 39, Rue de l'Echiquier,
Paris, for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
PROVISIONAL SPECIFICATION left by the said Peter Armand Le
Comte de Fontaine Moreau at the Office of the Commissioners of
Patents, with his Petition, on the 29th June 1853.
I, PETER ARMAND LE COMTE DE FONTAINE MOREAU, of the English
and Foreign Patent Office for Inventions, 4, South Street, Finsbury,
London, and 39, Rue de d'Echiquier, Paris, do hereby declare that
the nature of the Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF
FURNACES" to be as follows:-
My Invention consists in setting brick or cast iron grates obliquely
on the sides of furnaces so as to allow of the introduction of com-
bustibles placed in hoppers disposed on each side and arranged in the
brickwork.

page_text: Fig. 1, is a front elevation of the furnace.
Fig. 2, is a transverse section on a larger scale, showing the boiler
and the furnaces with their side grates.
Fig. 3, is a longitudinal section, shown on the same scale as Fig. 2.
Fig 4, 5, and 6, are plans of the grate.
DESCRIPTION OF THE FURNACE.
A, part of the boiler in which the steam is generated. B, reservoir.
C, hot air flues closed by cast iron doors, shown in Figure 1. D,
lower part of the flues. E, (Fig. 2,) vertical section of the hoppers.
F, is the ash pit. G, grate. S, Fig. 6, supports for the bars. H, H,
boilers. K, K, cast iron doors. L, door of the furnace as usually
employed. T, handle connected to the plate a, for withdrawing the
ashes. L, L, tubes of the boilers. M, partition separating the flues.
O, section of the partition separating the flues. N, N, ash pits. P,
lower part of the furnaces.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Peter Armand Le Comte de Fontaine Moreau
in the Great Seal Patent Office, on the 24th December 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
PETER ARMAND LE COMTE DE FONTAINE MOREAU, of 4, South Street,
Finsbury, London, and 39, Rue de l'Echiquier, Paris, Patent Agent,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of June, 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 Peter Armand Le Comite de Fontaine
Moreau, Her special license that I, the said Peter Armand Le Comte
de Fontaine Moreau, my executors, administrators, and assigns, or such
others as I, the said Peter Armand Le Comte de Fontaine Moreau,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter

page_text: 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 THE CONSTRUCTION OF FURNACES," communicated to
me from a foreigner residing abroad, upon the condition (amongst
others) that I, the said Peter Armand Le Comte de Fontaine
Moreau, by an instrument in writing under my hand and seal,
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 Peter Armand Le Comte de
Fontaine Moreau, 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 thereof,
reference being had to the Drawings hereto annexed, and to the
figures and letters marked thereon, that is to say:
The Invention consists in constructing the grates of furnaces for
heating boilers and other similar purposes of two separate parts, and
setting them at either side of the fire place in an inclined position, so
as to admit the alimenting air laterally on to the fuel and increase the
draft, in lieu of at the bottom, as hitherto effected. The grate may be
made either of the ordinary furnace bars or of fire bricks suitably
disposed; and in order to make its construction more easily understood
I will proceed to describe the annexed Drawings, which represent its
application to heating steam boilers, and to which the same letters of
reference in the several Figures represent similar parts wherever they
occur.
Figure 1, Drawing 1, is a front elevation of the furnace drawn to
the scale of one third of an inch to the foot.
Figure 2, (drawn to thic scale of one inch to the foot) is a transverse
section of the same double the size of Figure 1. This Figure shows
the tubular and main boilers. The fire-place is composed of lateral
grates, and above the fire-place are set the hoppers for supplying fuel.

page_text: Figure 3, Drawing 1, is a longitudinal section on the same scale as
Figure 2, Drawing II.
Figures 4, and 5, same Drawing, are views shewing the construction
of the lateral side of the grate in bricks and cast iron bars.
DESCRIPTION OF THE DRAWINGS.
A, Figure 3, Drawing 1; is the part of the main boiler where the
steam accumulates; B, the water; H, H, tubular boilers;. C, vent
holes of the main boiler; D, vent vent holes of the tubular boilers; E,
Figure 2, Drawing II., vertical section of the hoppers, one of them on
the right side containing fuel, which is represented in a state of ignition
under the boiler tube. The hopper on the left side is represented
empty, and shows its internal construction. F, ash pit; G, G, sides of
the grate, which may be composed of cast iron bars or fire bricks,
arranged as in Figures 4, and 5, in which the blue colour indicates
iron, and the red indicates bricks. When the grate is made of cast
iron two supports S, S, Figure 2, are required to maintain the bars in
a horizontal position. One of the supports is placed at the end of the
fire-place to hold the ends, another in the middle, the other end of the
bars bearing at the fore part on the frame of the doors K, K, Figure 1.
If the grate is made of bricks it is necessary to have supports placed
under every joint, as well as at both extremities of the fire-place.
K, K, cast iron doors, which remain open when the fire is lighted to
allow a free ingress of atmospheric air to the grate G. L, door of the
fire-place. A cast iron plate b, is laid over the part of the fire-place
formerly occupied by the ordinary grate. The plate 6, is moved by the
rod T, Figure 3, which causes the cast iron plate b, to advance and
uncover a space sufficient for the passage of the slags and ashes which
fall into the ash pit F. M, Figure 2, partition separating the vent
holes of the boiler tubes from the vent holes of the main boiler.
O, Figures 2, and 6, sections of the partition separating the vent holes
of the hoppers; N, spaces serving as hearths; P, lower part of the
furnace. The peculiar construction of the grate affords the means of
cleaning the furnace and boilers without interrupting the operation of
the furnace, combustion -being maintained on one side while it is

page_text: suspended on the other. The slags are collected into heaps underneath
the bars, and are expelled through the aperture a, at the bottom of the
furnace, which is opened and closed by means of the plate b, and rod T,
and fall into the ash pit F. The oblique position of the bars, as seen
at Figure 6, has the advantage of preventing the coal from passing
through the orifices of the grate. The hoppers may be closed at top
with a lid.
And having now described the nature of the said Invention, and in
what manner the same is to be performed, I wish it to be understood
that I do not confine myself to the precise details herein laid down, as
they may be modified, nor do I claim any of the parts taken singly.
But what I do claim is, the construction of furnace grates, for heating
steam boilers and other similar purposes, of two separate parts set in
an inclined position at the sides of the fire-place, thereby forming a
double acting grate, as herein-before described and referred to in the
several Figures of the Drawings.
In witness whereof, I, the said Peter Armand Le Comte de
Fontaine Moreau, have hereto set my hand and seal, this Tenth
day of December, in the year of our Lord One thousand eight
hundred and fifty-three.
Witness,
HY GILBEE.
L. DE FONTAINE MOREAU. (L.S.)