Year: 1887

page_text: I, ERNST AUGUST WIMAN of Stockholm, in the Kingdom of Sweden, Civil Engineer,
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:-
This invention relates to stoves for heating the rooms of dwelling houses, offices,
shops assembly halls and the like.
The said stoves are preferably composed of iron with or without an inner lining of
brick or the like, and so disposed that a continual combustion of the fuel can take
place and thus communicate to the outer surface of the stove a degree of heat which
will not be prejudicial to the sanitary properties of the air but which on the contrary,
will be more uniformly distributed all over the heating surface than has been the case
in iron stoves as heretofore constructed.
In the accompanying drawings.
Figure 1 is a vertical section, and
Figure 2 a horizontal section of a stove constructed according to my invention.
Figures 3 and 4 are sectional views similar to figures 1 and 2 respectively illustrating
a modification of the said invention.
Figure 5 is a sectional view illustrating a modification of a detail.
Figure 6 is a longitudinal section, and
Figures 7 and 8 are cross sections of another modification of the stove in which
the fire place is lined inside with brickwork but not provided with any fuel magazine.
k, k, are the outer walls of the stove and a is the fire-place which, in front, may be
provided with an opening a¹ through which the air can enter into the same,
(figure 5.)
6 is the grate and c the fuel magazine, supplied through the opening d provided
with a door. The opening of the fuel magazine may also be made in the shape of a
recess and the magazine c covered by a lid as shown by the dotted lines. è is the
ash pit.
From the fire place the hot gases ascend through one or more pipes f tapering
upwards and opening freely in the interior of the stove. g, g, are other and wider

page_text: pipes situated in the stove, open at both ends, surrounding the pipes f, and extending near
to the top of the stove, where they are provided preferably with bowl-shaped covers h,
placed somewhat above the mouth of the pipes, the edges of which covers may extend
a little farther down than the upper ends of the pipes g in order to effect a homogenous
mixture between the hotter gases arriving directly from the fire place through the pipes f
and the gases, which are already in the stove.
i is the discharge pipe for the passage of the gases of combustion into the funnel,
which discharge pipe should preferably pass through some place near to the bottom
of the stove.
If such is found desirable the pipe or pipes g may be made longer in the lower end
than they are shown in the drawings, so that the pipes reach more or less down
around the fire box itself.
The fuel magazine c is filled with fuel, which sinks down into the fire place a in
proportion as the combustion takes place there. The air entering through the ash-pite
passes through the glowing fuel and the generated gases of combustion pass through
the pipe or pipes finto the pipe or the pipes g, where they mix with the gases in the
stove, which are circulating from the bottom to the top in the pipes g and from the
top to the bottom in the other part of the stove. In this manner a degree of heat will
be generated in the mass of gas passing through the pipes g which will be lower than
that of the gases coming directly from the fire place in the same proportion as the
former mass is greater than the latter.
By this dilution of the hot gases in connection with the circulation of the whole
mass of gas included in the stove in the manner stated above, the advantage is obtained
partly that nowhere at the outer surface of the stove can a high temperature exist and
partly that the temperature in the upper parts of the stove will not differ much from
that in its lower parts.
Having now particularly described and ascertained the nature of the said invention
and in what manner the same is to be performed, I declare that what I claim is ;
A heating stove for the rooms of dwelling houses, offices and the like, having a
casing of iron with or without a lining of brickwork and provided in its interior with
a vertical or nearly vertical pipe (g) open at both ends and surrounding with its lower
part a smaller pipe (f) leading from the fire place of the stove and in conducting the
gases of combustion into the said vertical or nearly vertical pipe (g).
Dated this 15th day of June 1887
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicant.