Improvements in or relating to Stoves for Warming Purposes.
Year: 1899

page_text: Date of Application, 2nd Jan., 1899
Complete Specification Left, 29th Sept., 1899-Accepted, 4th Nov., 1899
PROVISIONAL SPECIFICATION.
Improvements in or relating to Stoves for Warming Purposes.
I, REGINALD HADdan, of the Firm of Herbert Haddan & Co., of 18, Bucking-
ham Street, Strand, W.C., London, Patent Agent, do hereby declare the nature
of this invention a communication to me from abroad by Hans Schuppmann, of
Kaiserstrasse 31, Berlin, in the Empire of Germany, Manufacturer of Stoves and
Cooking Ranges, to be as follows;
-
This invention relates to an improved stove for warming purposes.
Existing gas heating stoves have the disadvantage that in consequence of the
direct heating of the stove spaces by the gas, disagreeable smells are produced
especially at high temperature which together with the combustion products
coming partly into the room strongly infect the air. Moreover with most of the
existing gas heating stoves only a relative and imperfect use of the warmth con-
tained in the combustion gases is obtained as the gases in order to have sufficient
draught, escape at too high a temperature (at least 120°) into the chimney.
The purpose of the present invention is to prevent these defects.
In the improved heating stove a boiler heated by a gas burner or other heating
source is in connection with a water mantle put thereupon and with an expansion
vessel which forms together a single heating body. The gas burner is arranged
inside the suitably formed boiler so that the combustion products passing through
a flue lying in the boiler deliver most of their warmth to the boiler and conse-
quently to the water contained therein. The gases are then conducted through
a rising pipe into the inserted cover of the expansion vessel. This cover is
preferably provided on its lower side with a number of passages which the gases
coming out of the pipe are forced to go over the whole surface of the water
contained in the vessel and thereby deliver the remainder of their warmth to the
water. The cooled gases which as has been proved by experiments have a lower
temperature than the water contained in the expansion vessel, escapes thereupon
through a short pipe which serves at the same time as overflow pipe for the water
contained in the expansion vessel. The mantle has double walls containing water
and is connected at its upper end by a pipe with the expansion vessel and at its
lower end by another pipe with the boiler. Several openings are arranged in
the lower part of the mantle by which the interior of the stove heated by the
inner face of the mantle is put in connection with the outside air. The circula-
tion of the water is such that the heated water ascends from the boiler through a
pipe into the expansion vessel from here through another pipe into the mantle
and trickles down. The cooled water flows back into the boiler in order to be
heated again. It results therefore that the stove needs only one water filling;
refilling is not necessary because the evaporated water is abundantly supplied by
the condensation of the combustion products in the expansion vessel. With the
gas supply pipe a regulating arrangement is preferably put in connection
regulating automatically the gas consumption suitably to the prevailing
temperature.

page_text: By the present heating stove an excellent use of the heating gases is effected
on account of its peculiar construction and experiments have shown, that 1 cubic
metre of gas gives out 5,000 calories and more. The repeated warmth extraction
of the gases in the expansion vessel after they have quitted the heating boiler
is therefore extraordinarily favorable because the gases can move unhindered and
distributed on a large section in the passages of the cover whereby the water
flows directly to the water underneath in the expansion vessel. Therefore with
the exception of a small part of the heating boiler the stove surfaces are not
directly heated by the gas burner so the development of disagreeable smells is
efficaciously prevented.
Of course the heating of the described stove can be effected also by solid or
liquid combustibles and the arrangement of the expansion vessel joined with the
stove can be varied according to requirements.
T1000
COMPLETE SPECIFICATION.
Improvements in or relating to Stoves for Warming Purposes.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Bucking-
ham Street, Strand, W.C., London, Patent Agent, do hereby declare the nature
of this invention a communication to me from abroad by Hans Schuppmann, of
Kaiserstrasse 31, Berlin, in the Empire of Germany, Manufacturer of Stoves and
Cooking Ranges, and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement :—
This invention relates to an improved stove for warming purposes.
Existing gas heating stoves have the disadvantage that in consequence of the
direct heating of the stove spaces by the gas, disagreeable smells are produced
especially at high temperature which together with the combustion products
coming partly into the room strongly infect the air. Moreover with most of the
existing gas heating stoves only a relative and imperfect use of the warmth con-
tained in the combustion gases is obtained as the gases in order to have sufficient
draught, escape at too high a temperature (at least 120° C.) into the chimney.
The purpose of the present invention is to prevent these defects.
In the annexed drawing, Fig. 1 is a vertical central section of a form of this
stove. Fig. 2 is a section on line A B of Fig. 1 and Fig. 8 a section on line C D
of Fig. 1. Fig. 4 is a vertical section of another form of construction of the
stove. Fig. 5 is a section on the line E F of Fig. 4.
In the improved heating stove shewn in Figs. 1 to 3 a boiler 2 heated by the
gas burner I or other heating source is in connection with a water mantle 3 put
thereupon and with an expansion vessel 4 forming together a single heating body.
The gas burner 1 is arranged inside the suitably formed boiler 2 so that the
combustion products passing through the pipe 5 lying in the boiler deliver most
of their warmth to the boiler and consequently to the water contained therein,
The gases are then conducted through a rising pipe 6 into the inserted cover 7
of the expansion vessel 4. This cover 7 is preferably provided on its lower side
with a number of passages 8 in the manner shown in Fig. 3 by which the gases
coming out of the pipe 6 are forced to go over the surface of all the water con-
tained in the passages of the vessel 4 and hereby deliver the remainder of their
warmth to the water therein. The cooled gases which as has been proved by
experiments have a lower temperature than the water contained in vessel 4,
escape thereupon through the short pipe 9 which serves at the same time as over-
flow pipe for the water contained in the expansion vessel. The mantle 3 has

page_text: double walls containing water and is connected at its upper end by a pipe 10 with
the vessel 4 and at its lower end by pipe 11 with the boiler 2. Several open-
ings 12 are arranged in the lower part of the mantle 3 by which the interior of
the stove heated by the inner face of the mantle 3 is put in connection with the
outside air. The circulation of the water is effected so that the water heated
ascends from the boiler 2 through the pipe 13 into the expansion vessel 4, from
here through the pipe 10 into the mantle 3 and trickles down. The cooled water
flows through the pipe 11 back into the boiler 2 in order to be here heated again.
It results therefore that the stove needs only one water filling; refilling is seldom
necessary because the evaporated water is replaced by the condensation of the
combustion products in the expansion vessel. On the gas supply pipe 14 any
suitable regulating arrangement is preferably connected which automatically
regulates the gas consumption suitably to the prevailing temperature.
A further form of construction is shown in the Figs. 4 and 5. This form of
execution has the characteristics of the first one, as the heating boiler, the water
mantle and the expansion vessel are united in one heating body.
The burner 1 and the heating boiler 2 are essentially the same as the stove
shown in Fig. 1 also the water mantle 3 resembles the respective part of stove 1
in Fig. 1, but the connection pipe 13 of Fig. 1 is here formed as a complete
annular channel.
The heating gases pass through the ring like channel 15 lying between the two
annular water columns 3 and 13 and escape through the pipe 16 into the chimney.
Hereby the heating gas is not introduced into the expansion vessel 4.
The heating of the air in the chamber or room to be heated takes place on
the walls of the stove. In order to render this heating as productive as possible
the chamber air is led through the channels 17 into the inside. 18 of the stove.
It raises there and goes through openings 19 in the cover 20 and escapes into the
chamber.
In the forms of construction shown in the drawing a gas burner 1 is arranged
for heating the stove but it will be understood that it could also be heated by any
other arrangement either for solid or liquid combustibles or any other heat source.
With regard to the form and arrangement of the expansion chamber, the same
can be easily understood from the two forms of construction of the stove repre-
sented in the drawings.
It is clear without further explanation that the introduction of the heating gas
into the expansion vessel is not absolutely necessary even if this enables the
fullest use of the heat contained in the heating gas to be made, as this advantage
may be counteracted by the circumstance that the heating gases led into expan-
sion vessel cause a more rapid evaporation of the water in the said vessel which
would under certain circumstances be a disadvantage.
By the present heating stove an excellent use of the heating gases is effected
on account of its peculiar construction and experiments have shown, that 1 cubio
metre of gas gives out 5000 calories and more. The repeated warmth extraction
of the gases in the expansion vessel after they have quitted the heating boiler is
therefore extraordinarily favorable because the gases can move unhindered and
distributed on a large section in the passages of the cover 7 whereby the water
flows directly to the water underneath in the expansion vessel. Therefore with
the exception of a small part of the heating boiler the stove surfaces are not
directly heated by the gas burner so the development of disagreeable smells is
efficaciously prevented.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what
I claim is:-
1. In an improved stove for warming purposes the combination of a heating
boiler a water mantle and an expansion vessel so as to form a single united heating

page_text: 2. An improved stove for warming purposes in which a heating boiler 2 is
connected with a water mantle 3 and an expansion vessel 4 together forming one
heating body and in such a manner that the combustion products go first through
the heating boiler in order to deliver to it the greatest proportion of their warmth
and then are conducted into the expansion vessel from whence they escape into
chimney 9 after a further delivery of their warmth; for the purpose of preventing
the direct heating of the stove surfaces by the gas and to effect a better utilization
of the combustion products.
3. An improved stove for warming purposes as in Claim 1 in which the
inserted cover 7 of the expansion vessel 4 is provided on its lower side with
passages 8 for the purpose of causing the combustion products guided into the
expansion vessel to come upon the whole surface of the water contained therein
and thereby cause the most favorable extraction of the warmth from the gases.
Dated this 29th day of September 1899.
R. HADDAN,
18, Buckingham Street, Strand, London.