Improvements in Furnaces for Welding, Smelting, Metallurgical and other Purposes.
Year: 1896

page_text: Date of Application, 17th Aug., 1896
Complete Specification Loft 15th Mov 1007 Sesented
17th Cont
1007
Date of Application, 17th Aug., 1896
Complete Specification Loft, 15th May, 1907 Accepted, 17th Sept., 1907
PROVISIONAL SPECIFICATION.
Improvements in Furnaces for Welding, Smelting, Metallurgical
and other Purposes.
I, CARL SCHWALME, Workmaster of Zabrze in the Province of Schlesien and
Kingdom of Prussia, do hereby declare the nature of this invention to be as
follows:-
The essential advantages of the present invention consist in the fact that pure gas
is produced of petroleum in a generator and that thereby a much greater heat
is obtained. The waste gases may be used for heating steam boilers so that the
fuel is used to the utmost.
Fig. 1 of the drawing represents the oven in a longitudinal section, Fig. 2 in
a ground plan and Fig. 3 and Fig. 4 in two sections to z-z and y-y.
Above the furnace there is a reservoir A for the reception of the petroleum,
that is to be turned into gas. The petroleum is conducted by a tube into the
generating room in which it flows out through a rose or sieve nozzle on the trough C
consisting of fire-brick. This trough serves for the gasification of the petroleum
and when the oven is about to be used is heated red-hot by means of the
grate-firing D. The tongue g supports the trough C in its longitudinal position
and at the same time divides the fire-box into two parts, so that the heating gases
are forced to pass in the direction of the arrow (Fig. 2) along the whole lower
surface of the trough.
n the supply-pipe B two valves are arranged in order to regulate the flowing
in of the petroleum, besides there is inserted a glass-funnel with scale for the
purpose of making it possible immediately to find out any stoppage of the pipe
and also to determine the amount of petroleum used.
Under the hearth E there is the regenerator F, in which the air which is to be.
led into the gas generating room is heated in advance partly by the waste gases
passing out of the hearth and partly by the fire-gases escaping directly from the
furnace D.
The air is supplied from the air-shaft L, which has a box-like top K. The latter
is supplied with a slide, which can be regulated by a handle k. From E the
air is conducted in the direction of the arrow Fig. 2 through the regenerator.
to the front wall of the gas generating room, becoming more and more heated
during this process.
From the front-wall the air flows through the passage H placed above the gas
generating room (Fig. 1) into the hearth E. Here it combines with the petroleum-.
gases and a part of the fire-gases, coming from 1) and led through the pipe J into.
the gas-generating room and which are of about the same temperature, and serves
for the complete combustion of these gases.
The perforated vault W is only intended for collecting the gase and making,
them flow out with a certain amount of pressure.
M is the outlet passage of the combustion-gas to the chimney or to some other

page_text: part where they may be turned to use, such as fuel for steam boilers or the
like.
The apparatus described above is equally suited for welding- and puddling
furnaces as well as for Martin- tube welding-, copper- and zinc- smelting furnaces
and for all kinds of furnaces; the waste gases may also be used for driving gas-
motors or for illuminating purposes.
1000
For CARL SCHWALME,
Bernh. Brockhues.
Improvements in Furnaces for Welding, Smelting, Metallurgical
and other Purposes.
I, CARL SCHWALME, Workmaster of Zabrze in the Province of Silesia, German
Empire, 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:-
The essential advantages of the present invention consist in the fact that pure gas
is produced in a petroleum generator and that thereby a much greater heat
is obtained. The waste gases may be used for heating la boiler so that the
fuel is used to the utmost.
Fig. 1 of the drawing filed with the Provisional Specification represents the
oven in a longitudinal section, Fig. 2 in ground plan and Figs. 3 and 4 in two
cross-sectionst o z-z a nd yy.
Above the generator there is a reservoir A for the reception of the petroleum
that is to be turned into gas. The petroleum is conducted by a tube into the
generator in which it flows out through a rose or sieve nozzle on to the trough C
consisting of fire-brick.
This trough serves for the gasification of the petroleum and when the oven is
about to be used is heated red hot by means of the grated fire-place D. The
tongue 9 supports the trough C in its longitudinal position and at the same time
divides the fire box into two parts so that the heating gases are forced to pass in
the direction of the arrow along the whole lower surface of the trough.
In the supply-pipe B two valves there are which regulate the flowing in of
the petroleum, besides there is inserted a glass-funnel with scale for the purpose
of making it possible immediately to find out any stoppage of the pipe and also
to determine the amount of petroleum used.
Under the combustion chamber E there is the regenerator F consisting of
perforated fire brick plates and the canals G in which the air which is to be led
into the regenerator is heated in advance partly by the waste gases passing out
of the combustion chamber, and partly by the fire gases escaping directly from
the fire box behind D.
1e air is supplied from the air shaft L, which has a box-like top K.
The latter is supplied with a slide s which can be regulated by a crank k.
From L the air is conducted in the direction of the arrow (directed from the
right to the left in Fig. 2) through the fire brick plates and the canals G of the
regenerator to the front wall N of the furnace and becomes more and more heated
during this process. From the last canal G in the front wall N the air which is
now quite hot flows through the passage H placed above the generator
chamber (Fig. 1) into the combustion-chamber E where it combines with the
petroleum gases mixed with a part of the fire-gases coming from D and carried

page_text: through the tube J into the collecting chamber Q over W. This mixed gases are
of about the same temperature as the air and are then completely burned up.
The perforated roof W is only intended to collect the gases and make them
flow out under a certain amount of pressure.
M is the outlet passage of the fire gases to the chimney or to some other part
where they may be turned to use, such as the fire-place for a boiler or the like,
and O is the conduct of the gases from the combustion chamber E.
The apparatus described above is equally suited for welding, puddling, Martin
tube-welding copper and zinc smelting furnaces as well as for all kinds of boiler
furnaces; the waste-gases use of may be also by the suitable contrivances be used
for driving gas-motors, or for illuminating purposes.
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:-
In generetors for welding furnaces and the like the arrangement that petroleum
is conducted in thin jets from a reservoir A to a trough C, lying above the fire-
place D, in which trough it is evaporated and the vapours conducted in the
combustion chamber E, where they are combined with hot air coming fro:n the
rege a tor and mixed with a part of the fire-gases.
Dth: 14th day of Var 1907
For CARL SCHWALME,
Bernh. Brockhues.