A New or Improved Central Heating Apparatus for Buildings.
Year: 1890

page_text: Date of Application, 7th May, 1890
Complete Specification Left, 6th Dec., 1890-iccepted, 7th Mar., 1891
PROVISIONAL SPECIFICATION.
A New or Improved Central Heating Apparatus for Buildings.
1, ERNST HENN, of the Town of Kaiserslautern, in the Empire of Germany.
Thermal Technician, do hereby declare the nature of this invention to be as
follows:
:-
This invention relates to an air heating arrangement for buildings which is based
on decentralization of the thermal sources within a moderate range, though each
part acts independently. Said decentralization has for its purpose to allow, in mild
weather or when a part only of a building is to be served, the apparatus to be
partially put to use.
The improved apparatus is located in a heating chamber and attended to from
outside the latter. It consists of furnaces, placed side by side, and the number of
which depends on the size of the localities to be heated. Each furnace is lined
with fire bricks or equivalent in order to obviate over-heating of the iron
constituents.
The flues for the vapours of combustion from the various furnaces terminate in
approximately horizontal collecting pipes or passages extending with moderate
gradients through the whole of the heating chamber and subsequently terminating
in a flue. By this arrangement a highly extensive utilization of the fuel is
attained.
Opposite the furnaces in the rear of the apparatus at suitable distances respec-
tively from the furnaces and bottom a water groove is provided in the masonry
which serves to receive a quantity of water required for furnishing, by its evaporation
through the heat, the requisite moisture to the air.
To prevent the entrance of dust into the apparatus a suitable water spray devise
can be employed when required at the aperture of the cold air channel whereby any
dust is detained.
The hot-air passages are regulated by suitable appliances from outside.
HUELSER & Co.,
Attorneys.
COMPLETE SPECIFICATION.
A New or Improved Central Heating Apparatus for Buildings.
I, ERNST HENN, of the Town of Kaiserslantern, in the Empire of Germany,
Thermal Technician, 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 object of this invention is an air heating arrangement for buildings, which
is based on the principle of decentralization of the sources of heat within moderate
limits, although each constituent of the apparatus has independent action. The
decentralization referred to has for its purpose to allow, in mild weather, or when
a building is to be only partially served, part only of the apparatus to be put
to use.
Referring to the accompanying drawings Sheets I and II, in which like letters

page_text: chamber and consists of a series of furnaces placed side by side. These furunces,
which are lettered “a have a grate adapted in be drawn out, whereby they can he
commodiously served from outside and depend in number on the size of the locality
to be heated.
As shown by the vertical section Fig. 5, the furnaces a are made from iron and
internally lined with fire bricks or equivalent material whereby the iron parts are
prevented from attaining glowing heat.
The upright grate is revoluble at about shaft d, Fig. 6, perspective view, and
below the same is placed the lying grate with the grate plate e, to which is
attached a handle /' for drawing-out and pushing-in the grate.” On the under side
of the grate plate, Fig. 7 is provided a support g, which is secured hinge-fa-bion
ath, resting on the cross beamni of the grate hearing, and serves to support the
grate plate, while the grate is being drawn out. The bottom of the ash_box_m
forms an inclined plane in order to facilitate the emptying of the box. For the
purpose of protecting the door of the fuel feed channel or collar a from the action
of the fire, an isolating plate o is provided which is revolubly secured to the upper
side of the channel and always retains its vertical position.
When the furnace is to be heated, the vertical grate e is drawn up by means of
rod pas indicated by dotted lines, the lying grate el is then drawn out as likewise
indicated by dotted lines, whereby the support of the grate plate is automatically
set up and the fuel can now be commodiously laid on and lighted. Subsequently
the grate is replaced into the furnace, the support lays itself again automatically
between plate and cross beam, and the upright grate is allowed to fall back into
its vertical position. The sizes of the furnaces, as mentioned above. are to be
determined in accordance with the conditions of locality, and the shape of grate
depends on the fuel to be employed.
The dues for the escape of the gases of combustion from the single furnaces
terminate in approximately horizontal collecting tubes, which pass with moderate
gradient through the whole heating chamber and finally terminate in the flue. By
this arrangement the greatest possible utilization of the fuel is attained. In the
heating chamber—which must be kept as clean as possible as a preliminary heating
chamber for the rising air to be inhaled-a cement or similar kennel or groove q is
provided at the wall opposite the furnaces at about 0-80 to 100 metres from the
latter and about 1 metre and 60 centimetres from the base. This kennel diminishes
or flattens out downwardly over rough masonry into a rearwardly terminating
surface. The latter is slightly drizzled from the cement groove with fresh water.
which evaporates through the heat, the air being thus supplied with more or less
moisture according to the quantity of water used.
For dusty weather a water diffusing apparatus is provided at the entrance of the
cold air channel into the beating chamber. The particles of dust are compelled to
pass through a fine spray and are thereby precipitated.
Fig. 3 illustrates an apparatus, in which the water is diffused in a chamber,
through which air is made to pass, by small apertures or perforations arranged at
appropriate distances from each other, and through which the water is driven
against a surface and diffused. The hot air passages can be regulated at H. from
outside the chamber, Fig. 4.
It is evident from the foregoing description, that by the improved arrangement
several important conditions obtaining, in the free mature, are fulfilled, i.e. that the
viz., great cleanness of the heating chamber, non-overheating of iron parts, and
evaporation of water, must lead to good results.
Having now particularly described and ascertained the nature of this invention,
aud in what manner the same is to be performed, I declare that what I claim is :—
1) A central heating arrangement, in which a series of furnaces a terminate with
their smoke pipes singly in the collecting tubes of a closed heating chamber, while
the air is moistened by the moistening arrangement with unplastered masonry
surface, and the fresh air, supplied, is diffused by water spray device, for the

page_text: purpose of decentralizing the thermal sources and of allowing the single portions
of the apparatus to be employed independently, when required, substantially as
illustrated and described.
2) In the furnaces referred to in claim 1, the application of an upright grate c,
revoluble about shaft in combination with a lying grate adapted to be drawn
out and bearing on the grate support k, a grate plate e and support ? revolubly
connected to the latter and capable of automatically turning up, on the drawing out
of the grate, and automatically resuming its original position between the grate
plate and the cross beam i of the grate support k, on the shifting-in of the grate,
and a revolubly suspended isolating plate o within the fuel feed tube or collar n for
protecting the door of the latter from the effects of the heat or fire, the whole
substantially as and for the purpose set forth.
JAGIGT IN CM TO SIT NOIRST
LOGO
ERNST HENN,
Per Huelser & Co.,
Temple Chambers, London, his Agents.