Improvements in Apparatus for Drying Granular Material, such as Bran, Grain, and the like.
Year: 1895

page_text: Date of Application, 5th Feb., 1895
Complete Specification Left, 9th Oct., 1895-Accepted, 21st Dec., 1895
Improvements in Apparatus for Drying Granular Material, such as
Bran, Grain, and the like.
A communication from abroad by GIOVANNI STUCKY, of Molino Judecca,
Venice, Italy.
I, WILLIAM LLOYD WISE of 46 Lincoln's Inn Fields in the County of
London, Chartered Patent Agent and Consulting Engineer, do hereby declare the
nature of this invention to be as follows:-
in
Apparatus according to this invention for drying granular material such as bran,
grain and the like, is constructed with one or more rotary drums, each having a
peripheral annular space comprised between two casings, and a fan arrangement
the interior, which has for object to draw heated air from pipes connected to the
drums, and to force said air through the aforesaid annular spaces, that is to say,
through granular material of the kind referred to, which is charged into or
contained in the said spaces whereby the said material is dried.
One arrangement of drying plant according to the invention is illustrated by
way of example in the accompanying drawings in which
Figs. 1 and 2 are sections taken at right angles to each other, and
Figs. 3 and 4 illustrate the driving gear for the said apparatus, Fig. 3 being a
diagrammatic view.
This arrangement comprises two drying drums A, Fig. 2, each of which is
adapted to rotate between two fixed end boxes b which serve as conduits for
conveying heated air into the apparatus, and are connected with two passages c
and d of which one, c, serves for the introduction of the material to be dried and
the other d, for the discharge of the material after being dried. Both passages c
and d open into an annular space which is comprised between the two casings e
and of the drum. Each drum is rotatably mounted by means of arms 9 on
a solid shaft i which carries near each of its ends a fan wheel k for drawing in air
from the end boxes b, and between these two fan wheels a third fan wheel 7 which
serves to drive the air drawn in as aforesaid in a radial direction through the
casing e which forms a sieve, and into the aunular space between the two
casings e and e².
The outer casing e¹ is also formed as a sieve, as shewn in the drawings, air
passing through the annular space and through the material to be dried contained
in said space escaping directly through the said casing into the atmosphere.
The two
Below each drum is a passage m into which the two end boxes b open.
passages m communicate through passages n with the chamber o of a main fan p
which serves to draw the hot air directly from a heating chamber and to transmit
the said air to the several drums of which two, or any desired number thereof,
may be connected to the chamber o. In some cases only one drying drum may
be used.
The driving gear for each drum and its fan-shaft i, consists of two belt pulleys
and on a line of shafting s. In the example illustrated the drum belt runs on a
pulley t fixed directly on the periphery of the drum. From the diagrammatic
view Fig. 3, it will be seen the gearing is such that the drum rotates but slowly,
whilst its fans revolve very rapidly. It is of advantage to arrange on the inner
surface of the outer casing e¹ of each drum radially projecting ribs or fillets / in

page_text: the form of screw threads of quick pitch, which act in a well known manner during
the rotation of the drum, to continually carry up the material to be dried which is
continually slipping down along the inner casing e, and thus to let it fall upon the
The bars falso serve
uppermost portion for the time being of the inner casing e.
when arranged in the proper direction for the purpose and when the drum is
revolving in a suitable direction, to cause the material to be dried, to travel
gradually from the inlet c to the outlet d.
Dated this 5th day of February 1895.
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.
Improvements in Apparatus for Drying Granular Material, suen as
Bran, Grain, and the like.
A communication from abroad by GIOVANNI STUCKY, of Molino Judecca,
Venice, Italy.
I, WILLIAM LLOYD WISE, of 46, Lincoln's Inn Fields, in the County of
London, Consulting Engineer and Chartered Patent Agent, 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:-
Apparatus according to this invention for drying granular material such as
bran, grain and the like, is constructed with one or more rotary drums, cach having
a peripheral annular space comprised between two casings, and a fan arrangement
in the interior, which has for object to draw heated air from pipes or passages
connected to the drums, and to force the said air through the aforesaid annular
space that is to say, through granular material of the kind referred to which
is charged into or contained in the said space--whereby the said material is
dried.
One arrangement of drying-plant according to this invention is illustrated by
way of example in the accompanying drawings, in which
Figs. 1 and 2 show sections taken at right-angles to each other, the latter being
partly in elevation, and
Figs. 3 and 4 illustrate the driving-gear for the said apparatus, Fig. 3 being a
diagrammatic view.
This arrangement comprises two drying drums A. (Fig. 2), each of which is
adapted to rotate between two fixed end boxes b which serve as conduits for
conveying heated air into the apparatus and are in proximity to two passages c and d
of which one, c, serves for the introduction of the material to be dried, and the
other, d, for the discharge of the material after being dried. Both passages cand d
open, as shewn in Fig. 1, into an annular space which is comprised between the two
concentric casings e and e¹ of the drum. The outer casing of each drum, is
preferably supported on antifriction-rollers x, and the inner casing is mounted, by
means of arms g, so as to be rotatable on a solid shaft i, which carries near each of
its ends a fan-wheel k for drawing in air from the end boxes b, and, between these
two fan-wheels, a third fan-wheel which serves to drive the air, drawn in as
aforesaid, in a radial direction through the casing e which forins a sieve, and into
the annular space between the two casings e and e¹. The outer casing e¹ is also
formed as a sieve, as shown in the drawings, so that the air, after passing through
the annular space and through the material to be dried contained in the said space
escapes directly through the last-mentioned casing into the atmosphere.
Below each drum is a passage m into which the two end boxes b open. The two
passages m communicate through passages n with the chamber o of a main fan p

page_text: which serves to draw the hot air directly from the chamber in which it is heated
and to force it to the several drums of which two or any desired number may be
connected to the chamber o. In some cases only one drying drum may be used.
The driving gear for each drum with its fan-shaft i, comprises two belt pulleys q
and fast on a line of shafting s. In the arrangement illustrated, one belt runs
on a pulley t fixed directly to the periphery of the outer casing and the other runs
on a pulley fixed on the shaft i upon which the inner casing and the fan
wheels and are also fixed. From the diagrammatic view in Fig. 3, it will be
seen the gearing is such that the outer casing rotates comparatively slowly, whilst
the inner casing and the fans k and revolve relatively very rapidly. It is of
advantage to arrange on the inner surface of the outer casing e¹ of each drum,
radially projecting ribs or fillets f in the form of screw threads of quick or coarse
pitch, which act continually in a well known manner during the rotation of the
drum, to carry up the material to be dried which is continually slipping down
along the inner casing e, and thus to let it fall upon the uppermost portion, for the
time being, of the inner casing e. The bars falso serve, when arranged in the
proper direction for the purpose and when the drum is revolving in a suitable
direction, to cause the material under operation to travel gradually from the inlet c
to the outlet d.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. In apparatus for drying granular material such as bran, grains, and the like,
one or more rotary drums each having a peripheral annular space formed between
two sieve-like casings and each provided with a fan arranged within the inner
casing for the purpose of drawing in heated air from a passage connected to the
drum, and forcing the same radially outward through the said annular space, so
that the said air can dry the material charged into the said annular space
substantially as described.
2. A drum-apparatus for drying purposes, in which the drying air is drawn into
the inner of two concentrically arranged sieve-like longitudinal casings by two
fans k, g mounted on a shaft i and is forced by a third fan e arranged between the
fans k, g, from the interior of the inner casing radially outward through the
annular space formed by and between the said casings and containing the goods to
be dried, and then passes off immediately through the outer casing, substantially as
described.
3. Drying apparatus constructed according to Claim 1 and 2 in which radial
ribs or fillets are provided on the internal surface of the outer casing of the drum,
or of each drum, the said ribs or fillets being arranged after the manner of screw
threads of quick or coarse pitch with relation to the axis of the drum, so as to
raise the material to be dried and move it gradually onward in the direction of the
axis of the drum, substantially as described.
4. The improved drying apparatus constructed, arranged and operating
substantially as hereinbefore described and with reference to and shown in the
drawings annexed.
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ليم
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2005
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.