Improvements in Steam Heating Apparatus.
Year: 1892

page_text: D.te of Application, 22nd Sept., 1892-Accepted, 5th Nov., 1892
COMPLETE SPECIFICATION.
Improvements in Steam Heating Apparatus.
I, OTTOCAR LINDEMANN, Engineer, of 86 Queen Street Cheapside E.C.
London 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 has for its object improvement in the means for regulating the
temperature of steam heated stoves by varying the heat emanating radiating surface
of the stove according to requirement.
For this purpose I arrange a regulating valve in the steam supply pipe of the
stove, and I place au intermediate vessel below the stove. This intermediate vessel
is connected at its top by a pipe with the lowest part of the stove, and the lowest
part of the intermediate vessel is connected by means of a syphon-pipe with the
lower part of a collecting cistern placed nearly or exactly at the same level with
the intermediate vessel. From the upper part of the collecting vessel, which is
open to the atmosphere, an overflow pipe leads to the waterspace of the boiler,
which supplies the stoves with steam.
The accompanying drawing illustrates the arrangement. K is the boiler, S the
collecting vessel, G the intermediate vessel, F the syphon pipe, H the stove, D the
steam pipe, R the regulating valve. The valve R being closed, the stove H is
filled with air or another permanent gas heavier than steam, and the intermediate
vessel G is filled with water, which stands by means of the syphon pipe F at the
same level with the water in cistern S. When valve R is opened or partly opened,
steam passes into the stove, and will gather in the upper part of it, compelling the
air to retire into the bottom part of the stove and into the intermediate vessel,
expelling an equal portion of its water contents into the collecting cistern, from
where the surplus flows through the overflow pipe P, into the boiler."
The displacement of air in the stove by the steam and the adequate displacement
of water in the intermediate vessel by air will continue until the surface of the stove
exposed to the steam has become sufficiently large to condense by the cooling effect
of the outside air exactly the amount of steam, which is allowed to enter the stove.
through the regulating valve R. The syphon shape of the pipe F prevents under
all circumstances the escape of any air or gas from the intermediate vessel to the
collecting cistern, the column of air enclosed between the steam in the stove and
the water in the collecting cistern thus remaining constant.
In case of the arrangement of several heating stoves in different rooms of a house,
each stove may be provided with a special intermediate vessel G, each of these
vessels being connected with the general collecting cistern by a syphon-arrange-
ment, or one common intermediate vessel may be arranged in combination with an
overhead collecting pipe for the condense water from all the different stoves, this
common intermediate vessel being put in connection with the collecting cistern by
means of the syphon pipe F.
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:
"In connection with regulating valves in the steam pipe of steam heated stoves
one or more intermediate vessels below the steam-stoves, these intermediate vessels
being in communication with a collecting cistern by means of a synhon nine for the

page_text: purpose of retaining a constant body of air or other permanent gas between the
steam and the water thus preventing them coming in direct contact with each
other.
Dated this 22nd day of September 1892.
OTTOCAR LINDEMANN.