Improvements in Screening and Sorting Cylinders for Separating Grain from Impurities or Foreign Matter.
Year: 1892

page_text: Date of Application, 27th June, 1892
Complete Specification Left, 25th Mar., 1893-Accepted, 20th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Screening and Sorting Cylinders for 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 construction of screening and sorting
cylinders for separating grain from impurities or foreign matter, such as wheat
from oats, barley &c., wherein the grain is subjected to the action of two concentric
screening and sorting cylinders, in the inner one of which the grain is sorted or
separated from impurities of a round form, while in the outer oue it is firstly
separated from impurities of an oblong form, and is then if necessary sorted into.
different sizes as may be required.
For this purpose I construct the apparatus of three concentric inclined cylinders.
of which the inner one, which receives the grain to be separated or sorted from a
hopper at the higher end, is constructed in the known manner for separating the
impurities of a round form therefrom, the grain being if necessary fed into the
cylinder through feed rollers for insuring a uniform supply, and if necessary also,.
may be subjected to a preliminary purifying or sorting process by blowing or by
a rotary screening cylinder.
it
From the lower end of such cylinder the grain passes through lateral openings
into the annular space between the innermost and second cylinders. In this annular
space are fixed helical blades by means of which the grain entering the space is,.
by the rotation of the cylinders, conveyed back to the higher end again, where it
again escapes through lateral openings in the middle cylinder into the annular
space between this and the outer cylinder. This cylinder is formed firstly with.
openings of a shape to allow oblong impurities to escape through them, and
secondly, near its lower end it is formed with graduated openings for sorting the
grain into different sizes.
In order to insure that the grain, as it passes out of the inner sorting cylinder,
shall be fed effectually into the annular space containing the helical blades, there
are provided at the end of such space, a number of short inclined blades, arranged
like the blades of a turbine, which in revolving with the cylinders, have the effect
of catching the grain entering from the inner cylinder and propelling it on to the
helical blades. Without this arrangement the grain might accumulate at the
lower end of the inner cylinder and impede the proper action of the apparatus.
A flanged ring-shaped guard is provided in order to prevent the grain from being:
propelled too far when the cylinders are travelling at a quick speed.
Dated this 27th day of June 1892.
ABEL & IMRAY,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Screening and Sorting Cylinders for 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
etatement :-
My invention relates to an improved construction of screening and sorting.
cylinders for separating grain from impurities or foreign matter, such as wheat

page_text: from oats, barley &c. wherein the grain is subjected to the action of two concentric
screening and sorting cylinders, in the inner one of which the grain is sorted or
separated from impurities of a round form, while in the outer one it is firstly
separated from impurities of an oblong form, and is then if necessary sorted into
different sizes as may be required,
For this purpose I construct the apparatus as I will describe with reference to
the accompanying drawing which shews a part longitudinal elevation and part
section thereof. It consists of three concentric inclined cylinders of which the
inner one A which receives the grain to be separated or sorted from a hopper Bat
the higher end is constructed in the known manner for separating the impurities of
a round form therefrom, the grain being if necessary; fed into the cylinder through
feed rollers for insuring a uniform supply, and if necessary also, it may be subjected
to a preliminary purifying or sorting process by blowing or by a rotary screening
cylinder.
From the lower end of such A cylinder the grain passes through lateral openings A¹
into the annular space C between the innermost cylinder A and second cylinder D.
In this annular space are fixed two helical blades E by means of which the grain
entering the space is, by the rotation of the cylinders, conveyed back to the higher
end again, where it again escapes through lateral openings D₁ in the middle
cylinder into the annular space F between this and the outer cylinder G. This
cylinder is formed firstly with openings of a shape to allow oblong impurities to
escape through them into a shoot H, and secondly at its lower part. it is formed.
with graduated openings for sorting the grain into different sizes, this being
discharged into shoot I and J.
In order to insure that the grain, as it passes out of the inner sorting cylinder,
shall be fed effectually into the annular space containing the helical blades, there
are provided at the end of such space, a number of short inclined blades K
arranged like the blades of a turbine, which in revolving with the cylinders, have
the effect of catching the grain entering from the inner cylinder A and propelling
it on to the helical blades E. Without this arrangement the grain might
accumulate at the lower end of the inner cylinder and impede the proper action of
the apparatus.
The
A flanged ring-shaped guard L is provided in order to prevent the grain from
being propelled too far when the cylinders are travelling at a quick speed.
impurities are delivered from the inner cylinder through the shoot M.
By the arrangement of the turbine-like plate K and the guard ring L the action
of this apparatus is greatly improved and by providing the double helical blade E
the grain is conveyed back much quicker to the upper end without risk of choking.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In screening and sorting cylinder apparatus, the combination of an inner screening
cylinder A, an intermediate cylinder D with a double transporting worm E turbine
like plates K and guard ring L and an outer screening and sorting cylinder G,
arranged and operating substantially as herein described.
Dated this 24th day of March 1893.
ABEL & IMRAY,
Agents for the Applicant.