Year: 1898

page_text: I, JOHANN MAYER, of No. 32, Hohenzollernring, Cologne, Germany, 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:-
My invention relates to a construction of grain sorting machine, which I will
describe with reference to the accompanying drawing, in which Fig. 1 shews a
vertical section, and Fig. 2 a detached detail.
This invention has for its object to separate from grain the seeds of weeds or
broken grain, or any other small foreign bodies that are of a shorter or more rounded
form than that of the grain.
This sorting is effected by means of pocket-shaped cells or recesses on the inner
surface of cylinders in such manner that these cells or recesses, which are, as regards
form and size, more rounded and smaller than grain, will take up broken grain or
the seed of weeds as also other foreign bodies and by the rotation of the cylinders
will carry these to a receptacle into which they are discharged, while the grain,
which cannot enter the pockets on account of its greater size, remains at the lowest
point of the rotating sorting cylinder, from which it is eventually discharged.
On the accompanying drawing the machine is assumed to be double acting, being
provided with two such sorting cylinders A arranged side by side, the supply
chamber B being situated between them.
This is divided by the partition band the sloping bottoms b¹ into a separate supply
channel for each cylinder, which channel has at the lowest point of the side next
the sorting cylinder A a supply aperture a. The latter is closed by means of a
tumbling flap C pivotted at c¹, the closed position of which is preferably secured
by a catch d
As each sorting cylinder requires to be made adjustable relatively to the receiving
and discharging device D, supported outside the cylinder, it can consequently not
be closed at the ends, and can therefore not have a shaft on which it could rotate;
it is therefore, as shewn at Fig. 1, carried on supporting rollers f. The rotation of
the cylinders is effected by means of a toothed wheel 9 gearing with a toothed ring gr
on the outer periphery of the cylinder.
The action of the machine is as follows:-
:-
The grain supplied to the chamber B preferably by means of revolving distribut-
ing scoops h arranged below the supply hopper, is not continuously fed into the
cylinders A but only at each revolution of the latter, being admitted thereto by
openings a in their periphery. Whenever each cylinder, in its rotation assumes
such a position that its supply opening a coincides with that of the flap C that
closes the opening of the supply chamber B, the flap, whose locking catch d will
have been disengaged by means of a stud at the one edge of the opening a, will
be turned open by the action of the weight of the grain upon it, so to project into
the opening as indicated on the right hand of Fig. 1, and consequently a certain
quantity of grain is made to pass into the cylinder. On the farther rotation of the

page_text: cylinder A, the other edge of the opening a gradually raises the flap C, which is
then carried back by a counter-weight into its original closed position.
The sorting operation that takes place within the cylinder is as follows:-
By the continuous rotation of the sorting cylinder the admitted grain has such a
motion imparted to it that every seed will come successively in direct contact with
the inner surface of the cylinder.
Any broken grain and seeds of weeds as also foreign bodies will be thereby made
to enter the pockets a¹ on the inner surface of the cylinder A. and by the continued
rotation of the latter, they will consequently be raised up until they arrive at such
a height that they will fall out. In falling they are caught up by the receiver D
situated within and extending right across the cylinder A.
In this receiver is a revolving transporting worm i, shewn at Fig. 2, which conveys
the separated seeds &c. away. The grain, which on account of its greater size and
elongated form does not enter the pockets, and is consequently not raised up, remains
in the lowest part of the cylinder A, and eventually falls out through the opening a
when this approaches its lowest position, as shewn on the left hand side of Fig. 1.
As the path through which the raised seeds &c. will fall from the pockets a¹ into
the receiver D will vary according to the quantity of such seeds &c. contained in
the grain, the receiver D requires to be made adjustable to suit such variation of the
direction of fall. For enabling this to be done the receiver D is extended beyond the
open end faces of the cylinder, and is supported outside by fixed bearing brackets k
by means of setting screws or bolts passing through slots in the sides of the
receiver, so that the latter can be adjusted in position to the extent allowed by the
slots, thereby varying the position of the spout-like extension of the receiver D
relatively to the cylinder A.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :—
1. A machine for sorting grain wherein a horizontal rotating sorting cylinder
is provided with a longitudinal opening in its periphery, which when the cylinder
arrives in a certain position allows the pivotted flap of a supply channel to open
inwards into the cylinder, and thus causes a quantity of grain to enter the latter,
while when the said opening arrives at the lowest position of the cylinder, it allows
the grain to pass out of the latter substantially as described.
2. A machine for sorting grain, of the kind referred to in the first claim, wherein
a projection on the one edge of the inlet and discharge opening of the sorting
cylinder is made to disengage a catch from the flap of the supply channel so that
such flap in falling can enter through the opening in the cylinder, while the other
edge of the opening in rising, effects the turning back of the flap into the closed
position, substantially as described.
3. A machine for sorting grain of the kind referred to in the first claim, wherein
the sorting cylinder, which is open at the ends and runs on external supporting
rollers, contains a receiver for the separated broken grain and other foreign bodies,
which receiver extends through the ends of the drum and is externally attached by
means of slotted bolt holes and bolts to fixed supports, so as to be capable of adjust-
ment during the working, the collected broken grain &c. being transported out of
the receiver by suitable means substantially as described.
4. A machine for sorting grain combined and operating as herein described with
reference to the drawings.
Dated this 90th 1 To
1000
ABEL & IMRAY,
Agents for the Applicant.