Improvements in or relating to Drums for Germinating and Drying Malt.
Year: 1897

page_text: Date of Application, 21st July, 1897-Accepted, 11th Sept., 1897
COMPLETE SPECIFICATION.
Improvements in or relating to Drums for Germinating and Drying
Malt.
I, HERMANN RAETZELL, of 8 Franzosische Strasse, Berlin, in the Empire of
Germany, Manufacturer 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 hitherto known drums for germinating and drying malt have nearly all
the inconveniences that in consequence of their complicated construction, they
can be cleaned only with great difficulty. Besides during the slow rotation of the
drum and the consequent slow falling of the malt there is gradually formed in the
interior a solid core, which gets hot and which can only be destroyed again by
hand, in order to prevent the malt from spoiling.
For this reason in the present improvement there is arranged a hindrance in
the interior of the drum in order to avoid the formation of a solid core.
In the annexed drawing there is shown an example of the construction of such
a drum and of an air conduct or ventilating arrangement which appears the most
convenient for the present case.
Fig. 1 shows a longitudinal section of the drum.
Fig. 2 is a cross section on the line e f. Fig. 3 shows part cross section on the
lines c d and a b respectively.
The arrangement of the drum is the following.
An exterior mantle 1 is closed laterally by ends 2 and the interior is made
accessible by means of man holes 3. To this exterior drum there is connected a
second interior drum, by means of radial partitions 5. Figs. 2 and 3 these
radial partitions 5 traverse the space between the two drums in several places
and forming compartments 15 and rendering the same airtight to each other
these divisions surrounding the inner drum in a ring like manner. The inner
mantle has not a circular cross section, which is varied by the two inwardly
projecting plates b and c Fig. 3 between which there is the prolonged partition d
The holes 4 in the two ends 2 are closed by dome 6, the cylindrical inner walls 7
of which are again connected fixedly with the ends 8 of the interior drum. The
radial partitions 5 divide also the space in the dome 6 into a coresponding number
of divisions to that between the two drums closed air tightly against one another.
The ends 8 of the inner drum extend to the mantle 1 of the outer drum and are
provided with openings 9. The mantle of the inner drum is formed of perforated
plates 10 and the two plates b and c which are fixed on the partitions 5 d by means
of thumb screws 11.
The inner wall 7 of the dome 6 has openings which are of an equal number to
the divisions formed by the partitions 5. In the domes 6 there are arranged
hollow drums or pins 13, which are connected with A the air admission and air
escape pipes respectively. These hollow pins 13 have an opening 14 which forms
a connection so that air can pass between the said pipes connected to the hollow
pins and the compartments 15. The fixed pins 13 form the bearings of the drum
ги.

page_text: to be put into rotary movement in any known manner and they can themselves
be turned round their axes by means of handles 16, so that the openings 14 pro-
vided in the hollow pins 13 can be adjusted in such a manner, that entrance or
escape of the air can be effected at a desired place. In this manner for instance
the air entering at A can pass in the direction of the arrows into the interior of
the drum by adjusting the opening 14 (at the left side in the drawing) to the
lowest position, and this air after having passed through the drum at 12 can be
sucked out again by adjusting the opening 14 situated at the right side in the
drawing to the highest position. One can in this manner regulate at pleasure
the air circulation in the interior of the drum and change at pleasure the entering
and leaving points.
By the arrangement of the plates b and c projecting in the interior of the drum
the whole malt is lifted to the one side during the rotation of the drum and then
it is dropped slowly, so that no solid core can be produced. When the malt is
left to stand after growing, the two plates b and c stand at the lowest point of the
drum, so that two troughs are formed, in which the malt lies so that even when
the malt is still complete ventilation is obtained by means of the perforations in
the troughs and thus formed and the core does not become hot as in this arrange.
ment the air currents passing through the perforated plates cross one another and
ventilate equally the whole of the malt. In the drying process also the green.
malt does not lie in a compact heap, but equally in the two troughs so that here
also the two crossing air currents pass equally through the whole malt.
During the revolution of the drum the projecting plates form the device for
turning the malt.
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:
For the germinating and drying malt an interior drum. made of single, easily
detachable perforated lates and plain end plates, and connected by means of
radial partitions with a closed outer drum, the plates bc resting on one or more
partitions & prolonged inwards forming troughs projecting inwards, which allow
of the ventilation of the malt on all sides, especially when the drum is standing
still and prevent during the revolution consolidation of the malt.
Dated this 21st day of July 1897.
HERBERT HADDAN. & Co.,
18, Buckingham Street, Strand, Agents to Applicant.