Improvements in Apparatus for Grading or Separating Grain, Cereals, Seed, or the like.
Year: 1886

page_text: Date of Application, 4th Dec., 1886.
Complete Left, 2nd Sept., 1887.
Complete Accepted, 4th Oct., 1887.
Improvements in Apparatus for Grading or Separating Grain,
Cereals, Seed, or the like.
I, WILLIAM TOWL the younger of Marsh Gate Lane, Stratford in the County of
Essex, Miller do hereby declare the nature of this invention to be as follows :—
The object of my invention is to grade or separate in a simple manner the grains
or seeds according to their size and to this end my invention consists in an
arrangement of apparatus which is hereinafter described.
In a suitable casing or frame are mounted two long horizontal rollers driven hy
any convenient means. Upon the surface of both these rollers are small projecting
spiral ribs which may be either right or left handed from end to end of the roll,
or as preferred may be from right to left upon half the length of the roll and from
left to right upon the other half. Beneath these rolls which are suitably spaced
apart is an inverted V deflecting plate or shield the apex of which lies between the
two rollers. This is raised and lowered by suitable means so as to approach or
withdraw its two sides from the faces of the rollers. The grain or seed is delivered
between the rollers upon the apex of the shield, the revolution of the former carrying
the larger grains or seeds, (by means of the spiral ribs) to one end where they are
received in a suitable receptacle, while the smaller grains will fall between the rolls
and the sides of the shield into a hopper or receiver beneath. Where the spiral or
helix upon the surface of the rolls is reversed in direction from the centre as stated,
the larger grain will be delivered from both ends of the rolls. The rolls are driven
in a reverse direction and upwardly or away from the apex of the shield, so as to
clear the aperture and prevent grains being forced through, which might happen if
they were driven in the contrary direction.

page_text: It will be evident that the two rollers only without the central deflecting shield
will operate in the same way allowing the smaller grain to pass between them and
delivering the larger at the ends, but the use of the deflecting shield allows of the
rollers being spaced wider apart, and forms two apertures for the smaller grain to
fall through, thus about doubling the capacity of the apparatus. In place of the
inverted shaped shield, a stationary roller or similar device may be employed.
Dated this 4th day of December 1886.
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London,
Applicant's Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Grading or Separating Grain,
Cereals, Seed, or the like.
I, WILLIAM TOWL the younger of Marsh Gate Lane, Stratford, in the County of
Essex, Miller, 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 object of my
invention is to grade or separate in a simple manner wheat and
other cereals, seeds, or the like according to their size and to this end my invention
consists in an arrangement of apparatus in which in a suitable casing or frame are
mounted horizontal rolls driven by any convenient means. Upon the surface of
both these rolls are small projecting spiral ribs which may be either right or left
handed from end to end of the roll, or as preferred may be from right to left upon
half the length of the roll and from left to right upon the other half. Beneath these
rolls, which are suitably spaced apart, is an inverted V shaped deflecting plate or
shield, a non-rotating roller or other equivalent, the apex or top portion of which lies
between the two rolls. This is raised and lowered by suitable means so as to
approach or withdraw its sides from the faces of the rolls. The grain or seed is
delivered between the rolls upon the apex of the shield or on the roller, the revolution
of the rolls carrying the larger grains or seeds, (by means of the spiral ribs) to one
end where they are received in a suitable receptacle while the smaller grains will fall
between the rolls and the sides of the shield or roller into a hopper or receiver
beneath. Where the spiral or helix upon the surface of the rolls is reversed in
direction from the centre as stated, the larger grain will be delivered from both ends
of the rolls. The rolls are driven in a reverse direction and upwardly or away from
the apex of the shield, so as to clear the aperture and prevent grains being forced
through which might happen if they were driven in the contrary direction.
It will be evident that the two rolls only, without the central deflecting shield or
roller will operate in the same way allowing the smaller grain to pass between them
and delivering the larger at the ends, but the use of the deflecting shield or roller
allows of the rolls being spaced wider apart, and forms two apertures for the smaller
grain to fall through, thus about doubling the capacity of the apparatus.
To clearly explain the nature of the invention reference is made to the accompanying
drawings forming part of this specification, and in which :-
Fig. 1 is an end elevation of one form of apparatus embodying my invention.
Fig. 2 is a plan view of same with the grain hopper and spouts removed.
Figs. 3 and 4 are enlarged detail views of portions of Fig. 1.
Fig. 5 is an end elevation of an apparatus showing a modified arrangement of
feed-hopper, and―
Fig. 6 is a side elevation of same.
In a suitable framework A, are mounted in pairs the rolls B, having around them
the spiral ribs a which may be formed by wrapping and soldering wire upon them.

page_text: Above each pair of rolls is a spout C, through which the grain passes from the
hopper D. As shown on the left hand side of Figs. 1 and 2, and in Figs. 3, 5 and 6
the grading device employed consists of a non-rotatable roller b held in a slotted
bearing d (Fig. 3) at each end.
To enable each of these rollers & below each pair of rolls B, to be adjusted, the ends
are supported on wedges e mounted and capable of being moved laterally on screw
shafts, by means of a suitable hand wheel has shown.
On the right hand side of Figs. 1 and 2 and in Fig. 4 is shown the V shaped
shield which is placed in the same way between the rolls B, and is adjustable by a
screwed spindle as shown. The rolls B, may be driven by gear wheels g, g, which
when arranged as shown will enable each pair to revolve upwardly from the roller or
shield . Any suitable arrangement of feed hopper may be employed for conveying
the grain to each pair of rolls, that shown in Fig. 1, I consider convenient. In this
the grain is fed into the central hopper D, and falls from thence through the
depending spouts C, the mouths of which may be closed by suitable slides. The
smaller grain falling between the rolls may be carried off by a helix or wormu
shaft G, which may be driven in any convenient manner, while the larger grain
passing away from each end of the rolls B as indicated by the arrows, may be
conveyed away down the shoots E, as shown in Fig. 6, in which Fig. and also in
Fig. 5, is shown another arrangement of feed hopper consisting of a trough D, in
which works a slow pitch paddle worm I, to move the grain and allow it to fall down
the hoppers C, all of which are capable of being closed by a suitable slide. The right
hand pair of rolls B, shown in Fig. 2 are drawn to illustrate the method of delivery
from one end of the machine.
It will be evident that in place of making the rollers or shields b, adjustable, they
may be fixed, and the rolls B, of each pair be made capable of approaching and
receding from each other, but I find the former arrangement to be simpler, while as
previously stated the pair of rolls B, may be used without the roller or shield b, but.
the capacity of the machine is then not so great.
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. In an apparatus for grading or separating grain, sced, cereals, or the like, the
combination of a pair or pairs of spirally grooved or ribbed rolls B, with the roller
or rollers, or shield or shields b, substantially as and for the purposes described.
2. In an apparatus for grading or separating grain, seed, cereals, or the like, the
combination of a pair or pairs of adjustable spirally grooved or ribbed rolls,
substantially as and for the purposes described.
3. The general arrangement and combination of parts forming the improved grain
or seed grader, substantially as described.
1
1007
PHILIP M. JUSTICE,
55 & 56, Chancery Lane, London,
Applicant's Agent.