An Improved Apparatus for Drying Grain and other Materials.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
An Improved Apparatus for Drying Grain and other Materials.
I, FRIEDRICH ERNST OTTO, of Dortmund, in the Kingdom of Prussia, in the
Empire of Germany, Manufacturer, do hereby declare the nature of this inven-
tion to be as follows:
This invention relates to an improved apparatus for drying grain, mucilaginous
materials and the like, and owing to its simple and cheap construction it will
be particularly suitable for treating small or medium quantities of material,
it being mainly characterized by the fact that the steam arising from the hot
materials in the heated compartments of a drying drum is caused to circulate
around the drying drum so as to part with its heat before entering the chimney.
Furthermore the arrangement of this apparatus is such that, while charging or
filling the apparatus, none of the materials to be dried can accidentally drop into
the steam passage or channel surrounding the drying drum.
Dated this 2nd day of Ducamlay 1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.
An Improved Apparatus for Drying Grain and other Materials.
I, FRIEDRICH ERNST OTTO, of Dortmund, in the Kingdom of Prussia, German
Empire, 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:-
This invention relates to an improved apparatus for drying grain, mucilaginous
materials and the like, and owing to its simple and cheap construction it will
be particularly suitable for treating small or medium quantities of material,
it being mainly characterized by the fact that the steam arising from the hot
materials in the heated compartments of a drying drum is caused to circulate
around the drying drum so as to part with its heat before entering the chimney.
Furthermore the arrangement of this apparatus is such that, while charging or
filling the apparatus, none of the materials to be dried can accidentally drop into
the steam passage or channel surrounding the drying drum.
The invention will be readily understood from the accompanying drawing
which shows one form of an apparatus for the before mentioned purpose con-
structed in accordance with my invention and which consists in a receiving
n
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page_text: chamber or trough a fitted with a rotary multitubular drum b having external
shelfs b'. The trough a is surrounded by a jacket or outer casing c which forms
a passage around the chamber a, said passage opening into the chimney d.
The materials to be dried are delivered into the vessel a through one or several
doors or flaps c¹, the said doors or flaps being thrown down to the position shewn
in the dotted lines, thus effectually preventing any of the material from falling
into the steam passage d.
After charging or filling the apparatus the flaps c¹ are closed and the drum b
is revolved. The steam arising from the materials in the process of drying,
enters the passage d, where it freely circulates around the trough a and thus
communicates its heat to the materials contained in the trough, before it can
escape into the chimney d. In order to extract the fullest amount of heat
from the steam, I may find it desirable to construct the steam passage in such a
manner as to cause the steam to circulate several times around the trough w
before it is finally discharged into the chimney d¹.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. A drying apparatus, for drying grain and other materials, having a rotary
heating drum distinguished by the chamber containing the material to be dried
being surrounded by a jacket or outer casing having an inlet opening extending
throughout the length of the chamber into which passage the steam arising from
the drying materials enters, the jacket opening into the chimney so that the
steam is caused to circulate around the drying chamber before it escapes into
the air, essentially as and for the purpose described.
2. In an apparatus as claimed in Claim 1, the arrangement of a flap or door cl
for closing the inlet for the steam-passage d in such a manner as to effectually
prevent any material from falling into the steam passage while charging or
filling the apparatus, essentially as and for the purpose described.
Dated this 16th day of July 1900.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.