Improved Cylinder Apparatus for Screening or Separating Grain from Impurities or Foreign Matter.
Year: 1892

page_text: Date of Application, 27th June, 1892
Complete Specification Left, 25th Mar., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
Improved Cylinder Apparatus for Screening or Separating Grain
from Impurities or Foreign Matter.
I, NICOLAUS HEID of Stockerau near Vienna, Austria, Manufacturer, do hereby
declare the nature of this invention to be as follows:-
:―
My invention relates to an improved combined arrangement of rotary screening
or separating cylinders for separating grain from impurities or foreign matter,
whereby it is rendered possible in one and the same operation to effect the separation
of the foreign matter both of a round and of an oblong shape from the grain.
For this purpose three inclined rotary screening cylinders are combined together
as follows.
There is one upper screening cylinder and two lower ones, arranged to either
side of the upper one so that a certain space intervenes between them, all three
cylinders being inclined in one and the same direction.
The upper screening cylinder is constructed in the usual manner for separating
from the grain impurities of an oblong form. The grain is fed from a hopper into
the higher end of the top cylinder, the flow being if necessary regulated by feed
rollers, and a preliminary sorting may be effected by any blowing or other known
sorting arrangement attached to the hopper. From the lower end of the top
cylinder the grain escapes through lateral openings into a trough situated in the
before mentioned space between the lower cylinders, which trough extends back to
the higher inlet ends of the cylinders, and contains a worm transporter, by the
rotation of which the grain is conveyed back to the higher end, where it is then
caused to pass through lateral shoots to the inlet ends of the two lower cylinders.
On travelling down through these, the grain is then separated from the oblong
impurities in the known manner and escapes at the lower end through lateral holes
into a shoot leading it to suitable receptacles.
For driving the cylinders and the transporting worm, the cylinders have toothed
rings fixed on their upper ends, that of the upper cylinder being made to with
those of the two lower ones.
gear
With the toothed ring of the upper cylinder gears a pinion on a driving shaft, so
that by the rotation of this cylinder the two lower ones are also driven.
With the toothed ring of the upper cylinder also gears a pinion on a shaft
carrying a second pinion that gears with a wheel on the shaft of the transporting
worm, so that this also obtains its rotary motion from the upper cylinder.
Dated this 27th day of June 1892.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Cylinder Apparatus for Screening or Separating Grain
from Impurities or Foreign Matter.
I, NICOLAUS HEID of Stockerau near Vienna, Austria, Manufacturer 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 an improved combined arrangement of rotary screening
or separating cylinders for separating grain from impurities or foreign matter,
whereby it is rendered possible in one and the same operation to effect the

page_text: separation of the foreign matter both of a round and of an oblong shape from the
grain.
For this purpose three inclined rotary screening cylinders are combined together
as I will describe with reference to the accompanying drawings in which
Fig. 1 shews an end view and Fig. 2 a longitudinal section.
There is one upper screening cylinder B and two lower ones E' E' arranged to
either side of the upper one, so that a certain space intervenes between them, all
three cylinders being inclined in one and the same direction.
The upper screening cylinder B is constructed in the usual manner for separating
from the grain impurities of an oblong form. The grain is fed from a hopper A¹
and shoot A into the higher end of the top cylinder, the flow being if necessary
regulated by feed rollers, and a preliminary sorting may be effected by any blowing
or other known sorting arrangement attached to the hopper. From the lower end
of the top cylinder the purified grain escapes through lateral openings C into a
trough D' situated in the before mentioned space between the lower cylinders, which
trough extends back to the higher inlet ends of the cylinders, and contains a worm
transporter, by the rotation of which the grain is conveyed back to the higher end,
where it is then caused to pass through, lateral shoots D D to the inlet ends of the
two lower cylinders E' E2. On travelling down through these, the grain is then
separated from the larger oblong impurities such as oats &c. the known manner
and escapes at the lower end through lateral holes I into a shoot J leading it to
suitable receptacles.
For driving the cylinders and the transporting worm, the cylinders have toothed
rings fixed on their upper ends, the ring F of the upper cylinder being made to
gear with the rings G G of the two lower ones.
With the toothed ring F of the upper cylinder gears a pinion on a driving shaft,
so that by the rotation of this cylinder the two lower ones are also driven.
With the toothed ring of the upper cylinder also gears a pinion H on a shaft
carrying a second pinion H' that gears with a wheel H on the shaft of the
transporting worm in the trough D so that this also obtains its rotary motion from
the upper cylinder.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manuer the same is to be performed, I declare that what
I claim is:
1. In cylinder screening or sorting, apparatus the combination of three screening
cylinders arranged in parallel inclined positions, one above and between the other
two which are of a different sized mesh from the upper one and a trough with
transporting worm situated between the two lower cylinders whereby the grain
delivered from the lower end of the upper cylinder is conveyed Lack to the upper
ends of the two lower cylinders, substantially as described.
2. In cylinder screening or sorting apparatus such as is reto in the
preceding claim, the arrangement for driving the several cylinders coiting of
toothed rings gearing with each other fixed on the upper ends of the cylinders to
one of which motion is imparted by a piniou on a driving shaft and which impart
motion by toothed gearing to the worm of the transporting trough, substantially as
described.
Dated 25th day of March 1902
ABEL & IMRAY,
Agents for the Applicant.