Improvements in and connected with Apparatus for Drying Bricks, Tiles, and similar articles by means of Hot Air and Gases.
Year: 1893

page_text: Date of Application, 10th Apr., 1893-Accepted, 27th May, 1893
COMPLETE SPECIFICATION.
Improvements in and connected with Apparatus for Drying Bricks,
Tiles, and similar articles by means of Hot Air and Gases.
I. CARL ADOLF LUDWIG BRUCKMANN of 16 Muhlenstrasse, Lagerdorf by
Itzehoe, in the Kingdom of Prussia, Engineer, 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 been designed for the purpose of obviating the defect common
to a large proportion of apparatus constructed for the purpose of drying goods
in flues by the action of hot air and gases and which consists in the fact that the
moisture which has been evaporated from the goods in one part of the apparatus is
condensed and precipitated upon the goods which are in a cooler part. This con-
densed and precipitated moisture has again to be evaporated and again is
condensed and precipitated, and thus a considerable waste of fuel and loss of
efficiency arises.
I will fully describe my invention and in what manner the same may be carried
out with reference to the accompanying drawings, in which
Figure 1 is a vertical cross section taken on the line o—p Figure 2, and Figure 2
is a vertical longitudinal section taken along the line n-m Figure 1.
A longitudinal flue a b c d is provided with permanent rails for the transit of
trucks upon which the goods to be dried are loaded in the usual manner. This
flue is closed at each of its ends by the doors r and t which may be constructed
so as to be capable of being opened and closed in any convenient manner and by
any suitable means. In the middle length of the flue there is arranged a third
door i which divides the flue into two equal or unequal parts, and which is preferably
suspended by chains or the like so that it may be readily lifted and lowered.
In order to avoid an inconvenient length in the drawings, Figure 2, a portion
of the flue on each side of the door i is represented as being removed.
At one end of the flue, a, there is an underground flue or passages, through
which the hot air or gases are introduced into the flue a b c d through the
openings. From the flues there is or are a side passage or passages 9, which
pass along the sides or top of the main flue, at the end of which near to the
door t, it or they open into the flue through the openings g'.
In the middle of the main flue, on one side of the door i, a branch flue e and
at the other side of the door a branch flue f, are led off from the main flue and
communicate with a chimney or ventilator.
Since the positions of the several trucks on which the goods are arranged for
drying is in every case accurately determined, when at rest, the sliding door i
can be arranged in such a position that it will always come into the space
between two of the trucks. If the truck couplings k k do not permit the door
being made in one piece, it can be made in two or more parts, or the door may be
constructed to avoid these parts.
The parallel channel g may obviously be variously constructed and arranged at
the top or bottom or at one or both sides of the main flue, or it may instead of
being derived from the flue s, be derived from an independent source.
When the apparatus is in action, the goods having been placed upon the trucks
and wheeled into the flue, and the doors i and rt having been closed, the hot gases
arise from the flues through the openings into the part ab of the flue, at the
end of which their progress is stopped by the door i which deflects them through
the branch e into which they are drawn by the chimney draft or by a fan or
ventilator. During their passage through the flue a b, they pass over the goods on
the trucks therein and absorb their moisture. The current of hot gases in 8, is

page_text: split, that part of them which do not pass through the openings 11, branching off
through the opening or openings g g into the second part c d of the main flue into
which they enter through g'. From this opening the gases pass over the goods
in the trucks in the reverse direction towards the door i, by which they are stopped
and deflected into the side flue f, whence they escape as already described with
reference to the similar side flue e.
The trucks with the goods to be dried upon them are periodically introduced
into the part of the flue cd, through the door t, and having been therein a suitable
time they are passed under the raised door i, into the part a b, trucks containing
the fully dried goods being removed through the opening protected by the door r.
The part c d in which the preliminary drying takes place is of such a length that
the goods thereon become heated to such a temperature that on their advancement
to the part ab they are too hot to permit the moisture contained in the gases therein
to be condensed thereon.
The correct or any desired relative proportions of the quantities of hot gases
passing into each of the main portions a b, and cd, may be regulated by means of
slides or dampers suitably arranged as is well understood.
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 :-
1. An apparatus for drying goods by means of hot air or hot gases constructed
arranged and operated substantially as hereinbefore described and as illustrated by
the accompanying drawings.
2. In apparatus for drying goods arranged upon trucks a main flue divided
transversely by a door into two portions in one of which a preliminary heating
is effected and in the other of which the heating is completed, constructed and
arranged substantially as herein before described and as illustrated by the
accompanying drawings.
3. In apparatus for drying goods arranged upon trucks, the combination and
arrangement with a main flue or passage, of doors closing the ends of the flue, a
central door dividing the flue into two parts, inlet flues for the admission of hot
gases, and outlet flues for their exit, substantially as hereinbefore described and as
illustrated by the accompanying drawings.
Dated this 6th day of April A.D. 1893.
WILLIAM E. HEYS,
Agent for the Applicant.