Improvements in Grain Sorting or Grading Apparatus for Threshing Machines.
Year: 1899

page_text: Date of Application, 18th Aug.,
1899
Complete Specification Left, 26th Apr., 1900-Accepted, 18th Aug., 1900
PROVISIONAL SPECIFICATION.
Improvements in Grain Sorting or Grading Apparatus for Threshing
Machines.
I, FRANZ KUBICEK, of Gross Teinitz, near Olmütz, Moravia, Coru Miller, do
hereby declare the nature of this invention to be as follows:-
In the sorting or grading apparatus for threshing machines hitherto in use,
which act in the sorting of the grain by means of a rotating cylinder, the defect
has always been present that the course which the grain has to travel through the
sorting cylinder is too short for effecting a careful grading. Moreover the
present arrangement leaves it impossible to separate the grain into more than
two grades.
In order to obviate this defect a second sorting cylinder has been adopted in
the present invention, and the first cylinder has been made with the meshes of
two different sizes.
The sorting apparatus consists essentially of two sorting cylinders made of wire
and placed one above the other, and so constructed that the upper cylinder in
the direction from left to right becomes wider in the mesh, whilst the second
cylinder has preferably the same width of mesh throughout its whole length.
Plates or hoppers serve to conduct the grain to and from the apparatus, and for
conveying the grain through the sorting-cylinders, screw conveyors are placed.
inside them; for cleaning the cylinders the well-known roller brushes are attached.
The sorting of the grain into the various grades takes place in the following
manner:―
The grain when threshed, enters and falls from the hopper into the screw
conveyor by which it is conveyed through the sorting-cylinder. The smaller and
therefore worst grain falls through the first side of the sorting-cylinder where the
meshes are narrow, and falling on a hopper or plate is led away. The remainder
of the grain is carried on to the end of the cylinder and here falls into the hopper
to the screw conveyor. which conveys it through the second cylinder. The
meshes of the second cylinder are wider than those of the first cylinder so that the
medium sized grain falls through them on its way, and is carried away through
the opening whilst the largest sized grain is conveyed by the conveyor to the
left-hand end of the sorting-cylinder. whence it falls on the far side of the
Portition into the space provided for it.
Datel this 17th dor of
Anous1000
WM. P. THOMPSON & Co..
6, Bank Street, Manchester, Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Grain Sorting or Grading Apparatus for Threshing
Machines.
I, FRANZ KUBICEK, of Gross Teinitz, near Olmütz, Moravia, Corn 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:
In the sorting or grading apparatus for threshing machines hitherto in use,
which act in the sorting of the grain by means of a rotating cylinder, the defect
has always been present that the course which the grain has to travel through the
sorting cylinder is too short for effecting a careful grading. Moreover the
present arrangement leaves it impossible to separate the grain into more than
two grades.
In order to obviate this defect a second sorting cylinder has been adopted in
the present invention and the first cylinder has been made with the meshes of
two different sizes.
The accompanying drawing shows this improved sorting apparatus as follows:-
Fig. 1 is a front view with the brush rollers omitted.
Fig. 2 is a section along - of Fig. 1.
The sorting apparatus consists essentially of two sorting cylinders c¹³ made of
wire and placed one above the other, and so constructed that the upper cylinder c¹
in the direction from left to right (Fig. 1) becomes wider in the mesh, whilst the
second cylinder 2 has preferably the same width of mesh throughout its whole
length. The plates or hoppers 1, 2, 3, serve to conduct the grain to and from
the apparatus, and for conveying the grain through the sorting cylinders screw
conveyors k, 2. are placed inside them for cleaning the cylinders the well-known
roller brushes 6 and 62 are attached.
The sorting of the grain into the various grades takes place in the following
manner:―
The grain when threshed enters at a and falls from the hoppers into the screw
conveyor by which it is conveyed through the sorting cylinder c
in the direction of the arrow 7. The smaller and therefore worst
grain falls through the first (left) side of the sorting cylinder c¹ where the meshes
are narrow, and falling on the hopper or plate and through the opening o¹
(Fig. 2) is led away. The remainder of the grain is carried on to the end of the
cylinder c¹ and here falls into the hopper to the screw conveyor which conveys
it through the second cylinder in the direction of the arrow 2. The meshes of
the second cvlinder 2 are wider than those of the first cylinder e¹ so that the
medium-sized grain falls through them on its way, and is carried away through
the opening 2 whilst the largest sized grain is conveyed by the conveyor ² to
the left-hand end of the sorting-cylinder, whence it falls on the far side of the
partition into the space o³ provided for it.
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. Grain-sorting apparatus for threshing machines constructed with two
cylinders 2 placed one over the other, fitted with screw conveyors ¹², the
first of which has narrower meshes in its first half than in the second half, whilst
the meshes of the second cylinder are larger than those of the first cylinder c¹.
whereby the smallest grain Talls through the first half of the cylinder c and falling
into the hopper 2 reaches the opening whilst the remainder of the grain after

page_text: leaving the cylinder d¹ is taken up by the screw conveyor and conveyed through
the lower cylinder whereby the medium-sized grain falls through the meshes
of the cylinder into the opening 2 and the larger sized is conveyed to the end of
the cylinder and falls into the space 03 substantially as described.
2. Apparatus for sorting or grading grain constructed and arranged substan-
tially as described and shown.
Dated this 25th dow of
1000