Improvements in Machines for Sifting or Sorting Grain or Groun Materials or the like.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
Improvements in Machines for Sifting or Sorting Grain or Groun
Materials or the like.
I HUGO GRAEPEL of Budapest in the Kingdom of Hungary Engineer do hereby .
declare the nature of my said Invention to be as follows :-
The object of my Invention is to provide a machine for sifting or sorting grain or
ground materials or the like which is simple in construction takes less power to
operate it occupies but small space and is capable of operating upon a larger
amount of grain or material in a given time than is the case with machines as hitherto
made.
According to my Invention I make the machine with two or more chambers so
mounted that they can be caused to rotate by any suitable motive power. For this
purpose they may be mounted upon a shaft or they may run upon rollers arranged
circumferentially.
The said chambers are furnished with an antechamber in which the grain or
material to be operated upon is received and from which it passes into the chambers
either into both or all simultaneously or into the first and therefrom into the other
or others. The chambers are furnished with riddles or sieves and also with bye-
passes leading to outside the chambers. When the grain or material passes first
into one chamber and therefrom into the others each succeeding chamber has a
riddle or sieve finer than the one in the chamber preceding it. In operation the
grain or material which is not fine enough to pass through the riddle or sieve in
each chamber passes out of the machine by the before mentioned bye passes. The
chambers should be arranged so that they and their contents as far as possible
counterbalance each other around the centre of rotation.
Dated this 29th day of October 1888.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Sifting or Sorting Grain or Ground
Materials or the like.
I HUGO GRAEPEL of Budapest in the Kingdom of Hungary Engineer 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 provide a machine for sifting or sorting grain
or ground materials or the like which is simple in construction takes less power to
operate it occupies but small space and is capable of operating upon a larger
amount of grain or material in a given time than is the case with machines for the
purpose as hitherto made.
According to my invention I make the machine with two or more chambers so
mounted that they can be caused to rotate by any suitable motive power. For this
purpose they may be mounted upon a shaft or they may run upon rollers arranged
circunferentially.
The said chambers are furnished with an ante-chamber in which the grain or
material to be operated upon is received and from which it passes into the chambers
either into both or all simultaneously or into the first and therefrom into the other or
others. The chambers are furnished with riddles or sieves and also with bye-passes
or passages leading to outside the chambers. When the grain or material passes first
into one chamber and therefrom into the others the several chambers, have riddles or
sieves of different degrees of mesh or fineness. In operation the grain or material
which is not fine enough to pass through the riddle or sieve in each chamber passes
out of the machine by the before mentioned bye-passes or passages or into the other
chamber or chambers as the case may be. The chambers should be arranged so
that they and their contents as far as possible counterbalance each other around the
centre of rotation.
And in order that my said invention may be fully understood I shall now proceed
more particularly to describe the same and for that purpose shall refer to the several
figures on the annexed sheets of drawings the sanie letters of reference indicating
corresponding parts in all the figures.
Figure 1 is a transverse section. Figure 2 a longitudinal section (taken on the
line 1. 2. Figure 1) and Figure 3 a plan with the top removed of a machine con-
structed according to my invention in which the material to be sifted or graded passes
from the ante-chamber simultaneously into four chambers the fine material passing
through the riddles or sieves of the chambers and the coarser material passing out at
the end opposite to the ante-chamber.. A is. the axis preferably set in an inclined
position as shown in Figure 2 and provided with means for driving it from any suitable
motor. The sifting chambers are inarked No. 1 No. II No. III and No. IV. B are
the riddles or sieves forming the sides of the chambers and C are boards or divisions
between the chambers to prevent the material from dropping from the chambers as

page_text: they come uppermost on to the chambers at the time being in the lower position
and b 62 are the end plates or boards. D is the ante-chamber secured to the end of the
series of chambers and having an opening dat its central part through which
projects the lower end of the hopper E through which the material to be operated
upon passes into the ante-chamber D. F1 are the holes in the end plate 6 by which
the material passes from the ante-chamber D to the several sifting chambers.
F are the outlet holes through the end plate 62 for the coarse material which cannot
pass through the sieves of the chambers. a are sacks for receiving the fine material
which passes through the sieves B and down guiding boards y. z is the sack for
receiving the coarse material which has not passed through the sieves B.
Figures to 7 show another type of the inachine in which the material passes from
the ante-chamber D into one chamber and from this into the other or others. Figure 4
is a cross section of the machine. Figure 5 is a longitudinal section on the line 3, 4
Figure 4. Figure 6 is a longitudinal section on the line 5, 6 Figure 4, and Figure 7
is a longitudinal section on the line 7, 8 Figure 4.
I give the sieve of No. 1 chamber a very coarse mesh; that of chamber No. II a
less coarse mesh; that of chamber No. III a very fine mesh and that of chamber
No. IV a less fine mesh.
The shaft carrying the chambers is rotated in the direction of the arrow W
Figure 4. G are sheet iron plates or the like forming together with the boards C
shells enclosing a space round the several chambers. The material is fed by the
hopper E into the ante-chamber D arranged as hereinbefore described and passes by
the opening F into chamber No. I and the material which cannot pass through
the sieve of that chamber passes out of the machine through the hole H (fig. 5)
into bag No. 1. The material which passes through the sieves of chamber No. 1 is
brought by the inclined guide boards J fixed at a suitable angle on to the boards C to
the hole K and drops therethrough into the box L and passes therefrom by the
hole into the chamber No. 11 and such material as cannot pass through the
sieve of this chamber No. II passes through the hole M out of the machine into
bag No. 2. The material which passes through the sieve of chamber of No. II is
brought by the inclined boards J to the hole N (Figure 6) and drops through this
into the box and passes therefrom by the opening F into the chamber No. III.
The material which cannot pass through the sieve of chamber No. III passes through
the hole P into the small box Q and thence by the opening F into the chamber
No. IV. The material which passes through the meshes of chamber No. III drops
into the bag No. 3 through a hole made in the shell plate (at F7 Figure 6) the
material passing by its own weight towards this hole from the higher end of the said
shell and being conducted towards it from the lower end of the said shell by means of
the inclined boards R. Inclined guide boards S are fixed inside the chamber No. IV
to pass the material in it up the incline thereof towards the outlet T through which
the material which cannot pass through the sieve of the chamber No. IV passes into
bag No. 5.
The material which passes through the sieve of chamber No. IV passes
through a hole (at Fs Figure 7) in the shell plate G into the bag No. 4. The material
passes to this hole from the higher end of the shell by its own weight and is con-
ducted thereto from the lower end of the said shell by means of the inclined guide
boards R. The chambers may be two or more in number and may be circular or
I have described the
angular or of any other convenient shape in cross-section.
series of chambers constituting a sifting cylinder as being mounted on an axis A
but it will be readily understood that it may be made to rotate on rollers arranged
in circular series for the exterior of the cylinder to run on..
It will be evident from the foregoing description that the chambers can be arranged
in various ways for various methods of working. For example the material passing
from the ante-chamber may pass from chamber No. I through the whole series of
chambers retaining the coarsest material to the very last and being cleared only of
its finer material as it passes from one chamber to another or each chamber may
separate the coarsest material allowing the finer material to pass on to the next
chamber as it is evident that the sieves of the chamber No. I may have the finest

page_text: mesh the sieves getting coarser in the succeeding chambers, or that the sieves of
chamber No. 1 inay have the coarsest mesh getting finer and finer in each suc-
ceeding chamber so that the sieves may also be alternately fine and coarse or oven one
chamber may be provided with two or more kinds of meshes according to the require-
ments of the different materials to be operated upon. Or the material may be
passed into two of the chambers simultaneously and thence into the other or others.
I can make the machine revolve either on an inclined or on a horizontal axis but
if I construct the machine on a horizontal axis I either provide means in the chambers
to make the material to be operated upon pass along them or I may construct the
chambers of a conical shape the inlet of the material being at the small end and the
outlet at the large end. In the ante-chamber D or in other suitable position such
as in
any space through which the material passes from chamber to chamber there may be
arranged a "detacheur" consisting of a drum or of a set of blades or brushes or the
like caused to quickly revolve by any suitable gearing or motor in order to beat
brush break up or separate or equivalently act upon the material passing from the
antechamber into the sifting chambers.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The general arrangement and combination of parts constituting a machine for
the purposes mentioned and having two or more chambers disposed equally around
the centre of rotation all being arranged and acting substantially as hereinbefore
described.
2. The arrangement and combination of parts constituting the sorting or grading
machine hereinbefore described and shewn in Figures 1. 2. and 3 of the accom-
panying drawings.
3. The arrangement and combination of parts constituting the sorting or grading
machine herein before described and shewn in Figures 4 to 7 of the accompanying
drawings.
Dated this 15th day of December 1888.