Improvements in Heating Apartments, and in Hot-air Stoves for the Purpose.
Year: 1889

page_text: Date of Application, 4th May, 1889
Complete Specification Left, 15th Jan., 1890-Accepted, 15th Feb., 1890
PROVISIONAL SPECIFICATION
Improvements in Heating Apartments, and in Hot-air Stoves for
the Purpose.
I, SYLVAIN LELIEVRE, of 1 Boulevard Saint-Denis, Paris, France, do hereby declare
the nature of said Invention to be as follows :-
My invention relates to improvements in heating apartments and in hot air stoves
for the purpose, by means of which from one to eight (or more) different rooms may
be heated without any visible pipes.
The stove consists essentially of an interior fire-place with a metallic flue, around
which a current of air, drawn from the exterior, is free to circulate, and is then
distributed, through suitable openings, into the rooms to be heated This current of
heated air is perfectly distinct from the current of the fire-place, it is distributed in
the various rooms perfectly free, and does not contain any of the gases or products of
combustion.
The fire place is constructed in the usual manner as regards its exterior, the
interior comprises a fire place of cast iron, or other metal, with a back and sides, the
back being of the greatest thickness and formed with vertical and horizontal ribs.
The grate, for the reception of the fuel, is placed in the fire-place and can burn any
kind of fuel. The uppermost part or edge of the fire place is furnished with a groove
into which fits the base of a pipe or flue of copper, galvanized sheet iron, or other
metal, the joint between the fire place and the pipe or flue being made tight with
refractory cement. A space left free around this flue serves as the heating chamber
for the air coming from the exterior, and which is admitted through a suitably
arranged tube behind the stove so as to distribute the air around the flue of the fire
place
At a suitable height, according to circumstances, one or more openings are formed
in the brickwork communicating with the above named air space; these openings
being provided with registers, or the like, for regulating the introduction of the heated
air into the apartments to be heated.
The air chamber is carried up to the upper floor where other openings are formed
in the brickwork, and provided with registers or the like.
The inner wall of the flue, where it consists of brickwork, is lined with a coat of
refractory material, or tales Above the last series of openings, the flue of the
fire place terminates in an ordinary flue or chimney of any suitable material.
On each side of the fire place, and very near level with the floor, are suitable
openings, each provided with a door or plug, and by means of these openings the
etove may be cleaned out all round the fire place.
DAL
AAL 1
1000

page_text: COMPLETE SPECIFICATION
Improvements in Heating Apartments, and in Hot-air Stoves for
the Purpose.
I, SYLVAIN LELIEVRE, of 1, Boulevard Saint-Denis, Paris, France, 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,
reference being had to the accompanying drawings and to the letters and figures
marked thereon, that is to say :-
My invention relates to improvements in means and apparatus for heating apart-
ments by hot air stoves, and by which from one to eight or more different rooms
may be heated without any apparent piping.
According to my invention the stove consists essentially of an interior fire place
having a metallic or other flue around which a cui rent of air, coming from the
exterior is free to circulate, and is then distributed through suitable openings into
the rooms to be heated This current of heated air is entirely distinct from the
air entering the fireplace, and is distributed into the various rooms absolutely free
and contains none of the gases or products of combustion.
In order that my invention may be readily understood I proceed to describe the
same with reference to the accompanying drawings in which Fig. 1 is a transverse
vertical section, and Fig. 2 a longitudinal vertical section of my hot air stove,
shewing the different parts or means which constitute the invention.
The fire place, which is constructed in the usual manner, as regards its exterior,
comprises interiorly, a stove a, of cast iron, or other metal, having a back and sides,
the back being of greater thickness and formed with vertical and horizontal ribs
The grate b for the reception of the fuel is placed in the fire place and 18 capable of
burning any kind of fuel The uppermost part or edge of the fire place is furnished
with a groove c into which fits the base of a pipe or flue d, of copper, galvanized
sheet iron, or other metal, or material; the joint between the fire place and the flue
being made tight with refractory cement. A space is left around thus flue and
serves as the heating chamber for the air coming from the exterior, and which is
admitted through a bent tube g arranged behind the stove in such a manner as to
distribute the air all around the flue d
At a suitable height, capable of being varied according to circumstances, one or
more openings h, are formed in the brickwork and communicate with the above
named air space f, or heating chamber. These openings are furnished with
registers or dampers for regulating the admission of the heated air into the apart-
ments or rooms to be heated.
The air space or chamber is continued to the upper floor where the openings h
are formed in the brick work and are provided with registers or dampers .
The inner wall of the brick flue is lined with refractory material 7, or with tiles of
the same nature. Above the last series of openings h¹, the flue d is replaced by an
ordinary earthenware or brick chimney k.
On each side of the fire place, and on a level with the flooring, are openings 1, P,
(provided with a door or plug) through which the stove may be cleaned all around the
fire place.
$
The air admitted into the apartments serves at the same time to produce a
draught for the fire place so that I obtain by this kind of ventilation a constant
renewal of the interior air, and thus obviate the prolonged stay of the gases, which
might become disengaged in the rooms to be heated.
By these means if a stove be placed in an angle formed by four rooms these latter
will be simultaneously heated without any other pipes than the openings from the
air space or chamber f, and opening respectively into each of these rooms; also the
four rooms of the upper floor will be likewise heated by means of the second series
of openings h¹, it being understood that the stove must be proportioned to the
number of rooms to be heated.
P

page_text: The air space or heating chamber f, instead of being simply conical or cylindrical,
may be provided internally with a partition having baffle-plates, or with spirals m,
Laving two, three or more turns, for the purpose of compelling the air entering by
the tube g, and escaping at 2, 1, 2, ¹, to follow a longer course or path in contact
with the central heating flue d.
This partition may terminate at any desired height, and may be made, as well as
the central tube, of refractory earth, sheet iron, copper, zinc, or other metal, or
material. It is also to be understood that the air space or chamber itself may take
any form in cross section, such as round, oval, flat, rectangular, oblong, etc
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I claim.
1 The heating of apartments by causing the incoming air to be heated, in its
passage to the various rooms, in an air space or chamber containing the flue of a
hot air stove, and then distributing such heated air, through suitable openings in the
brick work of said air space or chamber, into the various rooms, substantially as
described.
2. In a hot air stove a, containing a grate b, the metal or other flue d,
hermetically fitted to the upper part of the stove and arranged within an air space
or chamber surrounding said flue, whereby the incoming air is heated without
being brought into contact with the products of combustion; the air tube g for
admitting the exterior air to be heated; and the openings h, h, h¹, h¹, formed in
the brickwork of the chimney for delivering the heated air into the varions rooms,
all substantially as described and shewn with reference to the accompanying
drawings.
Dated this 15th day of J
1000
ERNEST DE PASS,
68, Fleet Street, London, Agent for the Applicant.