Improvements in Apparatus for Drying Granular and other Materials.
Year: 1886

page_text: Date of Application, 2nd July, 1886.
Complete Left, 1st Apr., 1887.
Complete Accepted, 3rd May, 1887.
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Drying Granular and
other Materials.
I WILHELM ANTON FRIEDRICH WIEGHORST of the firm W. A. F. Wieghorst & Sohn,
New Strand Mill, Hamburg, Germany, Manufacturer, do hereby declare the nature of
my invention for IMPROVEMENTS IN APPARATUS FOR DRYING GRANULAR AND OTHER
MATERIALS to be as follows:-
The invention relates to improvements in apparatus, in which grain or other inaterial
is to be dried; and the object of my improvements is first to produce a uniform and
regular head in such apparatus; and second to provide means for a continual working
of the apparatus.
To attain these objects I attach inside a closed double walled box a double series of
inclined drying sieves arranged in zigzag lines, which the material to be dried has to
descend. Suitable plates placed in a short distance before the sieves serve to spread
out the material to be dried over the sieves; thus the material will pass the sieves in
very thin layers.
The box, wherein the sieves are arranged, is heated by means of tubes closed at
both ends and partially filled with water. These tubes project with one end into a
heating chamber, which may be accessible from three sides for the supply of fuel
et-cetera.
The dried material is transported by conveyers or other feeding screws or means to
any suitable place, where it may be raised by elevators and introduced again into the
apparatus to undergo a second drying process or it may be supplied to bags, reservoirs
or to machines for further treatment.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Drying Granular and
other Materials.
I WILHELM ANTON FRIEDRICH WIEGHORST of the firm W. A. F. Wieghorst & Sohn,
New Strand Mill, Hamburg, 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 invention relates to improvements in apparatus in which grain or other granular
material is to be dried and the object of my improvements. is first to produce a
uniform and regular heat in such apparatus; and second to provide means for a
continual working of the apparatus.
I attain these objects by the apparatus shown in the accompanying drawings in
which Figure 1 is a longitudinal section Figure 2 is a cross section; and Figure 3
is a horizontal section. Similar letters refer to similar parts throughout the several
views.
Inside of a closed double walled box is attached a double series of inclined drying
sieves a ce arranged in zigzag lines, which the material to be dried has to descend.
Suitable plates abdf placed in a short distance before the said sieves serve to spread
out the material to be dried over the sieves thus the material will pass the sieves in
very thin layers.
The box g, wherein the sieves are arranged, is heated by means of tubes i closed at
both ends and partially filled with water. These tubes project with one end into a
heating chamber, which may be accessible from three sides for the supply of fuel
placed on the grate k.
The dried material is transported by conveyers / or other feeding screws or means to
any suitable place, where it may be raised by elevators and introduced again into the
apparatus to undergo a second drying process or it may be supplied to bags, reservoirs
or to machines for further treatment.
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 :-
In apparatus for drying granular and other materials the combination of the heating
pipes, hermetically closed at both ends and partly filled with water, with the
sieves a, cand e and the plates a³, b, d and f, substantially as and for the purpose specified.
1 1
1 A
L A1 1007
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicant.