Improvements in and relating to Stoves.
Year: 1894

page_text: Date of Application, 7th Dec., 1891-Accepted, 30th Mar., 1895
COMPLETE SPECIFICATION.
Improvements in and relating to Stoves.
I, FELICE BALSAMELLO, of 9, 10 Via della Carrozze, Rome, in the Kingdom
of Italy, 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 invention relates to a stove comprising two cylinders A B represented in
vertical section in Figure 1 of the accompanying drawing, and a chimney C for
producing the draught and causing the heat to impinge energetically against the
entire surface of the boiler, thereby effecting the rapid boiling.
I arrange the cylinders A. B one in the other, as shown in Figure 1; they are
made of sheet metal of different thickness, that is to say the wall of the interior
cylinder B is thicker than that of the exterior cylinder A. The thicker cylinder B
may consist of cast iron in the case of small portable stoves, being then made in
one piece with the top D and the bottom of the stove. In the cylinder are three
small brackets E which support the grate El.
In large stoves, and especially those designed for military purposes, the cylinders
are made of sheet iron, in order to withstand between the various temperatures
and the shocks.
Between the two cylinders is left a free space of about one centimetre, which is
filled with wood-ashes or any other material capable of isolating the heat. In this
manner the water is heated more rapidly, and the cook scarcely experiences the
effect of the fire at all. The ashes are introduced between two cylinders through
a hole F, Figures 1 and 2, which is afterwards stopped up or luted. These cylinders
are connected by the aid of screws G.
The top D is round and forms a kind of crown. At its upper part is provided
an opening for the boiler H, and on the side it presents a short bent pipe to which
the stove or chimney pipe C (Figures 1 to 3) is fixed. At its lower part this top
has an opening of a larger diameter so that between the boiler H and the
cylinder B will remain a space of about one centimetre for facilitating the circu-
lation of the flame. This top contains an interior empty space equal to the space
in a circular crown whose diameter is equal to that of the chimney pipe. The said
top also serves for drawing the heat upon the whole surface of the boiler. The
height of the cylindrical part of the boiler is about one and a half times its
diameter.
A door I pivoted upon the hinges J Figure 2 serves for lighting the fire and for
the passage of the air. This door has a latch K which turns upon a pivot L and
can engage with a hook M fixed to the stove, and it carries a tooth adapted to slide
in a guide which is fixed to the door with the object of keeping the latch in
its place.
Three suitable feet N support the furnace and are fixed thereto by screws. The
dotted line O in Figure 2 indicates the place where I provide a second door in case
wood is employed as fuel.
In the chimney pipe C is included a valve P fixed upon an axis Q Figures 1
to 2 bent so as to form a handle. Two cars or handles R serve for displacing
the stove.
For boiling water quickly the fire is first lighted, the stove being covered with
a lid or with a low receptacle containing a little water, while the said door and
valve are kept open.
When the fire goes out and the water in the boiler has still

page_text: to boil the valve and door must be closed, thus utilizing the stored heat, which is
sufficient for boiling the water for an hour. The valve and door are also closed
for roasting purposes.
Figure 4 represents a section of two coupled stoves which have only one chimney
pipe and a single top with a pipe S. Upon these stoves is placed a larger
boiler H and another medium-sized boiler H' which serves for various uses.
Underneath the boiler H₁ is a box T.which receives heat from the two
coupled stoves.
Figure 5 represents a front view of this stove, and Figure 6 shows a sectional
plan of the same.
The arrangement of two coupled stoves baving been set forth it is deemed
unnecessary to show how three, four, five or more of these stoves may be connected.
Each of these connected stoves must have its own furnace, a single chimney pipe
being employed for all. This arrangement enables only those stoves to be lighted
which are required.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A portable stove having concentric cylinders and which is either used singly or
two or more stoves are connected together and possess only a single chimney,
substantially as hereinbefore set forth and represented in the accompanying
drawing.
Dated LUIS 7th day of December 1894.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.