IM- PROVEMENTS IN APPARATUS FOR DRYING GRAIN AND OTHER MATERIALS OR SUBSTANCES
Year: 1879

page_text: LETTERS PATENT to Frank Walter Scott, of 44, Christian Street, Commercial
Road East, in the County of Middlesex, Engineer, for the Invention of "IM-
PROVEMENTS IN APPARATUS FOR DRYING GRAIN AND OTHER MATERIALS OR
SUBSTANCES."
Sealed the 5th December 1879, and dated the 7th July 1879.
PROVISIONAL SPECIFICATION left by the said Frank Walter Scott at the
Office of the Commissioners of Patents on the 7th July 1879.
FRANK WALTER SCOTT, of 44, Christian Street, Commercial Road East, in the
County of Middlesex, Engineer. "IMPROVEMENTS IN APPARATUS FOR DRYING
GRAIN AND OTHER MATERIALS OR SUBSTANCES."
My Invention consists in the use of a revolving cylinder having from end to end
a series of internal flanges or rings projecting a short distance from the internal
circumference of the cylinder, thereby dividing the interior of the cylinder into a
series of cells, such cells being further divided by means of partitions inserted in the
spaces between the said flanges or rings so as to form buckets, in which, by the
revolution of the cylinder, grain or other material can be raised from the lower to
the upper side of the cylinder.
The cylinder is mounted on frames carrying friction rollers, and is inclined to such
an angle as will cause the upper portion of one flange or ring to be in a vertical
line over the next flange, so that grain or other material contained in the upper
portion of one cell would by the revolution of the cylinder be caused to fall down into
the lower portion of the next cell, and being carried to the upper portion thereof
would be allowed to fall down into the lower portion of the next cell, and so on in
succession throughout the whole series.
The grain or other material to be dried is introduced at one end of the cylinder.
into a bucket at the lower side of the first cell, whence it is carried up and allowed
to drop into a bucket in the second cell, and so on until it is discharged at the
other end of the cylinder; and while the grain or other material is continuously
falling from the upper to the lower side of the cylinder a current of heated air is
caused to pass through it, and carry off the moisture as required in the form of
steam or vapour, which escapes through a pipe suitably placed for the purpose. The
heated air is introduced through a pipe opening with a trumpet mouth into the
Din GI

page_text: placed for the purpose. The heated air is introduced through a pipe opening with
a trumpet mouth into the cylinder at the discharging end thereof, but the mode of,
applying the heated air may be varied; or cold water may be supplied to the cylinder
if preferred.
The cylinder is caused to revolve as required by means of gearing fixed outside,
and which may be arranged in any convenient manner.
From the foregoing statement it will be seen that the special or distinctive feature
of my Invention is the arrangement of apparatus, in passing through which the
grain or other material is dried by being caused while in its progress through the
revolving cylinder to fall repeatedly through a current of heated or cold air, by
means of which its moisture is abstracted and allowed to escape from the apparatus
in the form of steam or vapour.
Having thus stated the nature of the said Invention, I will proceed to describe
more particularly in what manner the same is to be performed by the aid of the
accompanying Drawings, in which are represented the revolving cylinder and other
portions of annexatue ahorn referred to
Fig. 1 represents in side elevation and partial section the cylinder and apparatus
connected therewith; Fig. 2 shews the cylinder in end elevation with the interior
as seen through its open end.
A is the cylinder, which is constructed in portions, as shewn in Fig. 1, for the.
convenience of lengthening it as required; B, B, are the flanges or rings projecting
from the internal circumference of the cylinder, and forming cells C, C, which are
open on their inner side; these cells are divided by partitions D, D, so as with the
walls of the cells to form buckets for receiving and carrying forward the grain or
other material as the cylinder revolves....The cylinder is mounted ou frames carrying
friction rollers E, E, and is inclined so as to bring the upper portion of one cell in a
vertical line over the lower portion of the next cell, and thereby admit of the con-
tents of the former falling into the latter. The cylinder has a suitable motion
imparted to it by means of gearing arranged in the manner shewn, or by other
convenient means, such motion being adapted to the requirements of the particular.
material under treatment.
The grain or other material to be dried is intended to be introduced into the
cylinder through a tube F in connection with any convenient form of feeding appa-
ratus adapted to regulate the feed as required, and the dried material is to be
discharged from the cylinder by an outlet such as that shewn at G. The heated air
can be supplied to the interior of the cylinder through the pipe H, having a trumpet
mouth as shewn, or it may be otherwise supplied; or, if preferred, cold air may be
supplied. At I is shewn a provision for the escape of moisture and heated vapour.
The mode in which the apparatus operates, and also the peculiar character of my
Invention, will be best understood by tracing the course taken by the contents of a
single bucket in its passage through the cylinder, and then considering that the
same.course is afterwards taken by the contents of each bucket in succession.
The grain or other material to be dried is brought forward in duly regulated pro-
portion by the feeding apparatus, and entering the cylinder A through the tube F
passes into the bucket at the bottom of the first cell C, whence by the revolution of
the cylinder it is carried upwards until (owing to the inclination of the cylinder) it
is brought in a position immediately over the bucket at the bottom of the second
cell, into which it will fall in a shower through the heated air in the interior of the
cylinder. By the continued revolution of the cylinder the contents of the said
bucket of the second cell will be carried upwards and dropped through the heated
air in the cylinder into the bucket at the bottom of the third cell; and this process
will be repeated until this portion of the grain or other material has passed into and
out of each cell in succession until it arrives at the last cell, whence it will be dis-
charged from the cylinder through the outlet G or otherwise.

page_text: It will be readily understood that the contents of each successive bucket of the
first cell, as the grain or other material is fed into it, will be subjected to the same
repetition of movement upwards and dropping through heated air in its transference
from cell to cell throughout its whole course from end to end of the cylinder_as
-that-which-has-been-described with reference to the course taken by the contents of
the first bucket.
From the foregoing description it will be seen that the peculiar character of my
=Invention is, that on the grain or other material being fed into the cylinder in duly
regulated proportions it will be dealt with in portions, each separate bucketful being
alternately partly turned over while carried upwards, and dropped in a shower
through heated air, the part of the cell from which the contents have dropped being
also acted upon by the heated air, such process being repeated in its transference
from cell to cell throughout the whole-series in the cylinder.
Having thus described the nature of the said Invention, and in what manner the
same is to be performed, I hereby declare that I do not claim as of my Invention
any of the parts represented and described otherwise than as used in combination
with the cylinder for the purpose described, neither do I claim any particular mode
of applying heated air, or steam, or cold air to the interior of the cylinder, nor any
particular mode of driving the cylinder or causing it to revolve, but what I do
claim is, the construction and arrangement of the cylinder in the manner described,
and the combination therewith of suitable feeding, heating, and cooling and driving
apparatus, so as to admit of grain or other material being dried in its passage
through the cylinder or apparatus, in the manner hereinbefore described.
In witness whereof, I, the said Frank Walter Scott, have hereunto set my
hand and seal, the Sixth day of January, in the year of our Lord One
thousand eight hundred and eighty.
Witness,
WILLIAM SPENCE,
8, Quality Court,
Chancery Lane.
FRANK WALTER SCOTT. (L.S.)
J