Improvements in Malting Apparatus.
Year: 1898

page_text: Date of Application, 31st Oct.. 1898-Accepted, 3rd Dec., 1898
COMPLETE SPECIFICATION.
Improvements in Malting Apparatus.
I, CONRAD SCHWAGER, of 5, Spandauerstrasse, Charlottenburg, in the Empire of
Germany, Maltster, 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 relates to malting apparatus in which a rotary drum is used with
means for causing a circulation or passage of air therethrough, and its object is more
especially to so arrange the air passages and ducts that the whole bulk of the malt may
be more equally and uniformly reached and treated by the air.
Usually the air has been introduced at one end and exhausted at the other end,
and since in its passage through the drum it pursues the shortest or easiest way
between its entrance and outlet, a large part of the contents of the drum have been
To obviate this inconvenience, the present
insufficiently supplied with air current.
invention consists in a construction by which air is introduced simultaneously from
both ends of the drum caused to traverse the bulk of the malt and again exhausted
at both ends of the drum.
In the annexed drawing Fig. 1 is a longitudinal section and Fig. 2 a cross section
of a drum provided with this construction for causing the air currents to follow the
course desired.
The drum consists of the exterior cylinder 1, closed at the ends by heads and
journalled to revolve on or about the stationary tubes 2, 2, which communicate with
the interior of cylinder 1; of the interior cylinder 3 closed by two heads and
journalled to revolve on or about the stationary tubes 6, 6 which lie within the
tubes 2, 2, and communicate with the interior of cylinder 3; and of the perforated
cylinder or tube 4 concentric with and fixed in cylinder 3 and dividing the latter
into an outer annular chamber for receiving the malt or grain and a central tube
which serves as an air passage.
The cylinders 1 and 3 are connected together by partitions 7 which lie each in a
plane containing the axis of the cylinders and extend the whole length of the cylinder 3
and from the exterior of the latter to the interior surface of cylinder 1. These walls 7 thus
divide the annular space between the cylinders 1 and 3 into a plurality of longitudinal
passages 8. These passages 8 are each closed at one end only, as shown at 11, but
the closures 11 are alternately at the one and the other end of the drum, so that
the passages 8 communicate alternately with the space 12 between the heads 13
and 14 at one end of the drum and the space 15 between the heads 16 and 17 at
the other end of the drum. Under each passage way 8 the cylinder 3 is perforated
with small perforations the area of the perforated part 18 extending along the
passage way for half its length or thereabouts from its closed end 11.
The central tubular part 4 is divided transversely by a solid partition 5 which
divides the interior of the part 4 into two compartiments of equal length or
substantially so.
10,10 represents perforated pipes extending along the two compartments respectively
of the tube 4, and 9 9 are pipes communicating with said perforated pipes 10 for
sunnlving water to them for irregating the malt.

page_text: It will be obvious that with the above described construction the air may be
passed through the malt as follows; entering at both ends at ZZ it passes through
the tubes 2,2 into the spaces 12, 15 and into the passages 8, 8 from alternate ends.
From the passages 8 it passes through the perforated parts 18 of drum 3, that from
space 12 passing into the right half of the drum 3 and that from space 15 into the
left half of drum 3. Traversing the malt, it passes into the two compartments of
tube 4 through the perforated wall thereof and thence right and left through the
tubes 6, 6 to outlets A.
The air may also follow the above described course but in the contrary direction,
entering at AA and passing out at Z Z.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed I declare that what I
claim is :-
1) The combination with a malting drum of air passage ways extending along the
wall of said drum alternately from the one and other end thereof and having com-
munication with the interior of the drum in the half of their length remote from the
end whence they extend, and a central perforated tube in said drum having a
transverse partition dividing said tube into two compartments having communication
respectively with air ducts at each end of the drum for the purpose set forth.
2) The combination with a malting drum consisting of concentric cylinders 1, 3, of
partitions 7 connecting cylinders 1 and 3 and dividing the space between them into
longitudinal passage ways 8 having communication alternately with the spaces 12
and 15 between the heads of eylinders 1 and 3, the cylinder 3 being perforated along
part of the length of each passage 8 remote from its communicating space 12 or 15
respectively, a central perforated tube 4 in said cylinder 3, a transverse partition 5 in
tube 4, tubes 2,2 communicating with spaces 12, 15 respectively, and tubes 6, 6
communicating with the two ends of tube 4 respectively.
3) The construction of malting drum substantially as set forth and illustrated for
permitting air circulation as herein described.
Dated 11.4
tabo 1000
HERBERT HADDAN & Co.,
18, Buckingham Street, Strand, W.C., London, Agents to Applicant.