Improvements in Apparatus for Separating Grain or Cereals from Seed or other Substances.
Year: 1899

page_text: Date of Application, 3rd May, 1899-Accepted, 12th Aug., 1899
Improvements in Apparatus for Separating Grain or Cereals from
Seed or other Substances.
I, ALFRED PEARCE TOWL, of 84, St. Paul's Churchyard, in the County of
Middlesex, Engineer, do hereby declare the nature of this invention, and in
what manner the same is performed, to be particularly described and ascertained'
in and by the following statement:―
The object of this invention is to separate the heavier and better qualities of
grain or cereals from the smaller, and from "seed" husk and other objectionable
materials and to this end the invention consists in the arrangement and com-
bination of parts as hereinafter described by which the desired result may be
obtained.
Within suitable bearings on the framework are mounted upon a shaft a series
of rings, upon which are carried two segmental cylinders, the inner with a series
of perforations or openings provided longitudinally through which the substances,
or smaller grains can freely pass. Over the openings or perforations in the
inner segmental cylinder, are a series of segmental baffle plates, forming a
species of longitudinally slotted segmental cylinder, the slots of which are
opposite to the longitudinally placed blanks in the inner segmental cylinder.
The two segmental cylinders are held apart, or divided by guage pieces, strips,
or other devices the guage being adjusted according to the nature of the grain
to be treated.
The arrangement of the various parts of the apparatus may be conveniently,
set forth by describing the operation, it being understood that the cylinders are
inclined from the horizontal from the head to the tail, and for this purpose
reference is made to the accompanying drawings in which:
Fig. 1 is an elevation of the screening cylinders employed for the purpose.
Fig. 2 is an end view of same.
Fig. 3 is an enlarged section of a portion of the cylinders on the line Y Y
Fig. 1.
Fig. 4 is a similar enlarged section of a portion of the cylinders on the
line X X Fig. 1.
Fig. 5 shews an enlarged section of a portion of the cylinders on the line W W
Fig.1.
Upon a shaft B are mounted a number of wheels or rings C, which support
the sheet metal segments of the cylinder A having perforations (A) as shewn
in Fig. 1.
Upon the outer surface of the perforated segments mounted on the rings
the segment baffle plates E are employed as shewn in Fig. 1 these being broken
away to shew the perforated segments beneath. Two being shewn off; the
outer and inner.
The method of holding the plates in position is clearly represented in Figs. 3,
4, 5 where adjustment brackets have clips (d) upon them, as shewn, for holding
down the segments, by pressure, upon the metal stiffening strips (e), which are
rivetted to them; the segments being secured to the rings C, or cylinder frame
by the locking keys (6) and the adjustment clips (d) between the rings C.

page_text: The segment plates are so arranged that a long slot or slots (f) is left between
them; the portion of the cylinder segments A directly beneath being blank or
unperforated, to prevent the grains escaping thereby.
The operation of the cylinders is as follows:-Reference being had more
particularly to Fig. 6 where one is shewn as mounted in a framework F although
the arrangement of the particular machine employed may be varied, as it will
be evident that a number may be mounted in one framework which may be of
any suitable description.
The grain fed from the hopper G passes on to an inclined sieve, which may
be shaken by any suitable means so as to cause the grain to fall through the same
on to the closed bottom, from whence it passes through the shoot I into the
cylinder A which is revolved by a suitable means such as by gearing shewn at J:
stones and other objectionable substances which cannot pass through sieve H
are caught in a trough at the bottom thereof or are otherwise discharged to
waste.
The grain is fed into the head or upper end of the segmental cylinders which
is slowly revolved, the grain travelling gradually down it during which travel
the smaller substances or seed" pass through the perforated parts of the inner
evlinder, and rest upon the inner side of the outer segmental cylinder E until
during their revolution the said "seed" and smaller substances fall through
the longitudinal slots between the segmental baffle plates into a suitable
chamber (9) adapted to receive them and from which they may be removed by
any suitable means.
The larger and longer grains are prevented from passing through the per-
forated segments owing to their ends coming in contact with the outer or seg-
mental baffle plates and they continue to travel down said evlinder to its end
where they are discharged into a suitable receptacle or shoot (h) from which the
dust and lighter particles are drawn by means of a fan at the exhaust pipe K
as shewn. The baffle plate segments may be provided with handles (7) by which
they may be readily drawn off after loosening the clips (6) for the purpose of
cleaning or clearing away any obstruction.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
(1) The improvements in apparatus for separating grain or cereals from
"seed" or other substances consisting of a segmental perforated cylinder
surrounded by detachable segmental baffle plates substantially as described.
(2) The improvements in apparatus for separating grain or cereals from "seed"
or other substances consisting of the combination of the hopper or other feed
with a suitably mounted detachable perforated segmental cylinder the latter
being arranged to deliver the smaller grain, waste or "seed" into one receptacle.
while the larger and cleaned grains passes out from the end into a second
receptacle, and a suitable exhaust or blast by which any lighter particles or
dust are removed and to allow of the cylinder frame being readily and suitably
clothed with any guage perforations for the separating of "seed" waste from
any sized grain or cereals, all substantially as described.
11
"
HENRY PUGH & SON,
84, St. Paul's Churchyard, E.C.