Improvements in Kilns and the like.
Year: 1899

page_text: Date of Application, 23rd Nov., 1899-Accepted, 20th Jan., 1900
COMILELE SPECIFICATION.
Improvements in Kilns and the like.
We, GUSTAV MÖLLER, M.D., Chemical Manufacturer, and PAUL PFEIFER,
Engineer and Architect, both of 19, Friedrick Wilhelm-strasse, Berlin, Germany,
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 fol-
lowing statement:-
-
Our invention relates to a new and improved drying apparatus or kiln which
is of such a construction that the tiles and like articles to be burnt can be readily
introduced and withdrawn without rebuilding the drying room; and in which
the heat in any quantity of tiles already burned is utilized, in addition to other
heating means for treating the next succeeding quantity, thus reducing the
amount of fuel used; also in which a constant temperature is maintained and
in which together with other advantages the fire heat is applied indirectly to
the tiles while a hot air current is applied directly to the said tiles and the like.
In the accompanying drawings forming a part of this specification.
Fig. 1 shows a sectional plan of the heating oven we employ and which is also
shown in connection with Fig. 2 which shows also a sectional plan of the drying
or burning chamber.
By reference to the drawings it will be seen that we employ a tubular shaped
oven A the furnace or firing place of which a is connected through pipe & with
a tubular formed heating regulator / longitudinally extending through the dry-
ing chamber B and which regulator has connected to its opposite end outside
of said drying chamber an exhaust G. For purposes of cooling the burned tiles
and utilizing their heat, in carrying on the process, the space b in the burning
oven is in communication on one side with fresh air supply pipes 61, 62, 63, and
on the other side with the exhaust pipes e¹, &², e³ emptying into pipe m which
has an exhaust F through which the air current passes through pipes n', n³ n³
and n into the hottest part of the drying chamber B.
Through pipes r, 71, and 23 and the drying chamber B is connected with
an exhaust H. Tracks are laid in both the oven and chamber and wagons ware
adapted to pass on the same in the burning oven A and carry on the tiles already
dried, which leave at the end p, while wagons carry the tiles to be dried through
doors K of chamber B and leave the latter at the opposite end i.
The heated gases from the furnace a are led through the regulator and out
of the same through the exhaust G, so that the fire gases pass through the drying
chamber from one and to the other, in the opposite direction to that taken by
the wagons v.
The wagons w carrying the burned and still hot tiles are passed
through the space b in the oven A where the fresh air entering though pipes c, b¹.
63 63 circulates around them, thus becoming heated, whereupon the exhaust F
draws this freshly warmed air through the pipes a¹, e², e³, m out of space b and
delivers it through said pipes n, n¹, n³, n³, n, into the drying chamber B. By
this means a constant flow of hot air is passed into the drying chamber at its hot-
test end without however any prior heating from the fire so that the tiles entering

page_text: from the opposite end and partly dried therein are submitted to an extra drying
influence upon reaching that portion of the chamber adjacent to end i.
In the middle of the drying chamber the exhaust H aforesaid, draws off through
the pipes r, r, 2, 3, 4, this hot air now damp and cooled and by regulation of
these pipes, the said air current can be carried as far through the drying chamber
as desired.
The exhaust H is arranged to draw more air out of the drying chamber than
the exhaust F supplies, and to furnish this extra air the doors are partially
opened, whence a current of fresh air is drawn into and through the drying canal
to the pipes 1, 2, 3 and being warmed by the regulator assists the hot air
current before described, in carrying out the steam generated by the action of
the hot air upon the moist tiles through the exhaust H.
The drying chamber can be arranged so that the air current has a circular
motion through which the regulator has a quicker action upon the material to
be dried.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In a new and improved kiln and drying apparatus for tiles and pottery
goods, the combination of a burning oven, a drying chamber, a regulator or dis-
tributor in the latter, a furnace in connection therewith and means for heating
a current of air from the tiles already burned, and leading the same directly
upon those next to be burned, substantially as described and set forth.
2. In a new and improved kiln and drying apparatus for tiles and pottery
goods, the combination of tubular shaped ovens and drying chambers with tracks,
in each of the same, and wagons adapted to pass upon the tracks, with means
for applying both directly and indirectly a drying action upon said tiles, substan-
tially as described and set forth.
3. In a new and improved kiln or drying apparatus the combination of a tubular
oven, a furnace in connection therewith, a drying chamber, a tubular regulator
or distributor, a pipe connecting said regulator and said furnace, an exhaust in
connection with the opposite end of said regulator and means for passing unburned
tiles adjacent to the regulator substantially as described and set forth.
4. In a new or improved kiln or drying apparatus the combination of a tubular
oven through which tiles can be passed, a fresh air supply pipe in connection
therewith, an exhaust in connection with the opposite side of said oven, a furnace
connected with said oven, a tubular shaped drying chamber, a tubular regulator
or distributor longitudinally extended therein and in connection at one end with
said furnace, a second exhaust on the opposite end of said regulator, pines in
connection with the first exhaust and emptying into said drving chamber adjacent
to that end of said regulator which is connected with said furnace and a third
exhaust having suitable adjustable pipe connection with the drying chamber
for drawing out the air therefrom. substantially as described and set forth.
Dated this 23rd day of November 1899.
S. S. BROMHEAD,
Agent for Applicant,
33, Cannon Street, London, E.C.