Year: 1888

page_text: Date of Application, 4th Jan., 1888
Complete Specification Left, 4th Oct., 1888
Complete Specification Accepted, 4th Jan., 1889
I, FRIEDRICH ANTON WEBER, in the City of Flöha, near Chemnitz in the Kingdom
of Saxony, German Empire, Gentleman do hereby declare the nature of this invention
to be as follows:-
high
By utilizing hot air for drying purposes it is necessary not only that a
temperature is obtained but also that the utilized air, after having absorbed the
moisture from the damp articles to be dryed, is removed and substituted by new hot
air. The utilized hot air, still containing a great quantity of heat, can also, instead of
being led away, be forced to pass through the stove, whereby no fresh or cold air is
admitted into the stove, a great saving of fuel thereby being effected.
In carrying out my Invention, I prefer to divide the drying chamber in two rooms,
by means of a perpendicular partition of non heat conducting material. The walls
and cealing of the chamber are also composed of non heat conducting material. The
partition is provided at its top and bottom with canals.
In one of the rooms, the stove is placed, and the non heat conducting walls round the
stove are provided with a recess or ring, in order to make the passage for the admitted
cold air smaller when passing between the stove and said walls. The stove room is
divided into two, nearly equal, rooms by means of a horizontal perforated plate, and
the lower room is again divided by another horizontal plate at about the height of
the fire place of the stove-provided with holes for the pipes admitting the cold air
from outside, and which thereby does not pass through the stove, but, after being
heated during the passage between the stove and the walls, passes through the
perforated plate into the upper part of the stove room and from there through
the top canal in the partition-into the drying room and from there through
the lower canal, in the partition, and through holes in the bottom plate into the fire
place of the stove.
Doors are provided in the non heat conducting walls for admitting the fuel, for
removing the ashes and for placing the articles to be dried in the drying room.
Dated this 4th day of January 1888.
LORENTZ ALBERT GROTH,
Agent for the Applicant.

page_text: The boiler is connected with the water tank g through pipe e terminating in the
vertical pipe i which is so connected with the boiler as to contain more or loss water
according to the quantity of water contained in the boiler. Thereby the tension of
the steam generated in the boiler is increased to utilize the steam for heating
purposes.
The manometer m indicates the quantity of water contained in the boiler which is
fed by opening the cock I at a low steam tension.
Above the boiler a horizontal bottom of sheet metal is provided at a slight distance,
which separates the upper part of the space smoke-tight from the lower part a corre-
sponding space being left for the smoke canal c thus allowing the fire vapours and
smoke to pass through the said canal into the flue after having communicated part of
their heat to the air above the aforementioned bottom. This air is admitted through
the pipe the mouth of which is adjustable, flows, after having been sufficiently
heated, through hurdles of wire or sheet metal supported by the angle rails and
dries or heats the objects placed on said hurdles; hence it passes through the
openings ff of the wall b into the space B and, on opening the slide u, into the
space A and flows through the openings o, provided in the furnace, under the grating
to assist the combustion of the fuel.
To employ the hot air for heating a room, the slide u is closed and the slide v
opened. Thereby the hot air passes through the canal H into the room and returns
through the canal y into the apparatus.
In order to allow the combustion to be rendered more energetic, pipes n' and n²
are provided for the admission of the outer air below and above the fire grate.
To clean or repair the apparatus, the furnace, oven, boiler etc. are drawn out, after
turning aside the catches w¹ w² w w and the space A is completely laid open.
In the top view Fig. 5, g' is the cover of the water tank, which is represented as
being partly removed to show the canal c, and t is an opening or trap, through which
the water filled into the tank.
The boiler may also be replaced by a second oven, and the space B bo used for the
rapid drying of linen after taking out the hurdles.
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:
A hot air drying or heating apparatus, in which partly the air heated direct by the
fire, partly the air fed through the pipe z and heated at the hot parts of the
apparatus is utilized, the latter being so arranged as to allow the furnace o p
the oven d and the boiler k to be easily introduced or removed, substantially as and
for the purpose set forth.