Year: 1886

page_text: Date of Application, 14th May, 1886.
Complete Left, 14th Feb., 1887.
Complete Accepted, 10th May, 1887.
I ARTHUR RUST of Granville Road Leicester Gentleman do hereby declare the
nature of this invention to be as follows:-
My improved slow combustion stove is constructed as follows:-In the centre is a
supply tube which is to be charged with coke or other fuel, it opens at its lower end
into a fire box or basket closed at the bottom by bars, and on these bars is placed a
cone which causes an outward distribution of the fuel as it descends from the supply
chamber. Around this supply chamber and concentric with it there is a casing, and
outside this casing again there is a second casing concentric with the first, and
between these spiral flues are formed, three such flues is a convenient number-The
heat and products from the fuel burnt in the fire box ascend by these flues which they
enter by three apertures arranged symmetrically around the centre. At the top of the
casing there are three corresponding apertures by which the products of combustion
are delivered in a common uptake which leads to a chimney. The space between the
inner casing and the supply tube is filled with sand or other granular non conductor
of heat, which protects the supply tube, also whilst the stove is burning it absorbs heat
and afterwards delivers it so flat the stove remains warm long after the fire as ceased
to burn. Also whilst the fire alight a sufficient temperature is easily maintained
and this without risk of overheating.
Sometimes I arrange pipes for circulating hot water in connection with my
improved stove-I place a coil of such pipes between the inner and the outer casing
so that the pipes form the upper and lower walls or partitions of the spiral flues.
In some cases I provide a jacket outside the cases previously mentioned and
concentric with them. The jacket includes an air space all around; air is allowed
to enter the air space at the lower part and at the top of the stove the heated air is
discharged or is led away to any place where it can be advantageously delivered.
Dated this 14th day of Nov 18SA
CARPMAEL & Co.,
Agents for the Applicant.

page_text: 1, ARTHUR RUST of Granville Road, Leicester, Gentleman, do hereby declare the
nature of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
My improved slow combustion stove is constructed as follows:-In the centre is a
supply tube which is to be charged with coke or other fucl; it opens at its lower
end into a fire box or basket closed at the bottom by bars, and on these bars is
placed a cone which causes an outward distribution of the fuel as it descends from the
supply chamber. Around the supply chamber and concentric with it there is a casing,
and outside this casing again there is a second casing concentric with the first, and
between these spiral flues are formed, three such flues is a convenient number. The
heat and products from the fuel burnt in the fire box ascend by these flues which they
enter by three apertures arranged symmetrically around the centre. At the top of the
casing there are three corresponding apertures by which the products of combustion
are delivered in a common up take which leads to a chimney. The space between the
inner casing and the supply tube is filled with sand or other similar bad-conductor
of heat, which protects the supply tube; also whilst the stove is burning it absorbs
heat and afterwards delivers it so that the stove remains warm long after the fire has
ceased to burn. Also whilst the fire is alight a sufficient temperature is easily
maintained and this without risk of overheating.
Sometimes I arrange pipes for circulating hot water in connection with my
improved stove-I place a coil of such pipes between the inner and the outer
casing so that the pipes form the upper and lower walls or partitions of the spiral
flues.
In some cases I provide a jacket outside the cases previously mentioned and
concentric with them. The jacket includes an air space all around; air is allowed to
enter the air space at the lower part and at the top of the stove the heated air is
discharged or is led away to any place where it can be advantageously delivered.
In order that my said invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.

page_text: a is a cylindrical casting or base at the lower part of the stove, it is provided with a
door or doors which are opened for cleaning and a regulator or valve which is set to
admit the necessary quantity of air beneath the fire bars.
bis the dead plate, it divides the interior of the base a into two separate chambers.
The dead plate is made in paris so that it may readily be inserted in its place.
c, c, are the fire bars or fire grating; the grating is circular and is received into a
corresponding recess in the dead plate. An arm is fixed on the grating and projects
radially it serves to rotate the grating to and fro a short distance for the purpose of
cleaning the fire. This arm or handle is readily accessible on opening the door above
mentioned which gives access to the space below the dead plate, or the handle may
project on the outside.
I
is the fire basket, it is a circular perforated trough fixed upon the dead plate.
e is the foundation plate, it fits upon the top of the base a closing it, with the
exception of a central aperture e¹ and three apertures e², e², e², near the outer edge.
The foundation plate receives into the central aperture e a cylindrical supply
chamber or fuel container f; it also receives the outer drum or casing g and an
inner casing. These three casings or parts, and all extend up to and connect
with the cover plate i. Between the fuel container, and the inner casing is a space
which is filled with sand which serves to absorb and store heat and also to prevent
heat from being too freely imparted to the fuel in the container f. The apertures
e², e, e, fall as will be seen between the casings g and hand the space over the
openings is divided by the ribs k, k, k, so as to form three separate spiral flues; these
ribs are fixed within the interior of the drum g. Near the upper part of the drum
other similar partitions, ¹, are provided which however do not extend entirely
across the space between the parts and h, they serve to abstract heat from the hot
gases in the flues and prevent its escape by the chimney. In the cover plate i there
are three apertures similar to those in the foundation plate and by these the products
of combustion ascending the flues are delivered into a space enclosed by the smoke
box or cover l. A flue pipe passing into a chimney is adapted at the top of the smoke
box at 1. m is a trunk for introducing fuel, its month is at the side of the smoke box
and is provided with a closely fitting cover; at its inner end it communicates with the
fuel container f.
Preferably I provide at the centre of the fire grating a cone n as is indicated by
dotted lines. Sometimes also as indicated by dotted lines at o I provide a casing
around the trunk m and the space within this casing around the trunk I charge with
sand.
In some cases I may provide an outer jacket around the drum g and lead air into
and from this casing by air trunks. The air is heated in its passage and delivered in a
heated state into a room intended to be warmed or the heat is otherwise utilised.
My stove substantially as described above is very suitable for use in combination
with my thermo-electric battery or magnopile described in my Specification No. 5092
in the year 1886 but for this use it is preferable to construct the base in brick-work.
Where generation of steam is required the parts fand may be so modified as to
become a steam boiler, water replacing the sand in the space between them; or the
boiler may be connected with a system of pipes for heating by steam or by hot water.
Or sometimes I replace the ribs or partitions h, k, by spiral pipes connected with pipes
for circulating hot water. An exterior jacket enclosing a water space around the
drum g may also be provided.
Sometimes I substitute for the spiral flues, flues taking a zig-zag course up and
down or to and fro between the parts y and h.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
-
1. A stove with a central supply chamber or fuel container within a casing filled
with sand or like bad-conducting material; such fuel container being closed at the top
and delivering at the bottom into a fire basket within a chamber from which spiral or

page_text: other flues ascend around the casing containing bad-conducting material substantially
as described.
2. A stove with a central fuel container, a casing around the fuel container charged
with sand or other bad-conducting material, spiral flues encircling such casing and
spiral water pipes separating the flues substantially as described.
3. The combination consisting of the base chamber a divided by the dead plate b
the fire bars and basket c, d, the supply chamber or fuel container and suitable flues
conducting the products of combustion from the upper chamber of the base sub-
stantially as described.
4. My improved stove substantially as described.