Improvements in Sorting or Sifting Apparatus.
Year: 1891

page_text: Date of Application, 4th Sept., 1891
Complete Specification Left, 7th June, 1892-Accepted, 16th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Sorting or Sifting Apparatus.
I, GUSTAV EISNER of Fallbachstrasse No. 2, Hanau-on-the-Main, Hesse,
Germany, Brewer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a sorting or sifting cylinder in which the sifting surface
is formed of a series of parallel bars of elongated cross sectional form mounted in
the ends of the cylinder in such a manner that the passage area between the bars
can be altered by means of a rotary movement imparted uniformly to all the bars.
This is effected by means of a peculiar adjusting device. Such device may
comprise arms on the axial pivots of the parallel bars the said arms being
connected to links mounted upon a ring arranged to rotate on the cylinder end
and by the rotation of which ring the arms are moved, all the bars being shifted
simultaneously.
In one construction the bars comprising the cylinder have eccentrically or
centrally arranged pivots which are mounted in the ends of the cylinder in such a
manner as to be capable of movement in a rotary sense. The bars have preferably
a cross sectional form somewhat resembling an ordinary key hole. The bars are
stiffened by means of rings held at equal distances apart in the length of the
cylinder by intermediate pieces; in these rings the cylindrical parts of the bars
have their bearings. The bars are secured in the cylinder ends and the intermediate
rings by means of ring segments.
Since the bars have an elongated cross sectional form, it is possible by partly
rotating the same to increase or diminish the space between them, that is to say,
the passage area of the sifting cylinder.
In order to enable all the bars to be adjusted simultaneously, the ends of the
pivots are provided with arms which are connected with links that are rotatably
mounted on the flat surface of a ring which is capable of rotating about one of
the cylinder ends. By rotating this ring the position of the links and arms
relatively to one another is altered because the bars follow the movement of
the arms.
The cylinder axis is mounted in naves on the cylinder ends and on one axis there
can be axially arranged a number of cylinders of which each is furnished with an
adjusting device, thus providing a cylinder divided into compartments which may
be adjusted to the same or to different sizes of passage area according to
requirement.
The connection of the several divisions is effected in a known manner. The
cylinder is provided with a charging inlet and a discharge outlet.
Dated this 4th day of September 1891.
G. EISNER,
By L. W., per F. B.

page_text: COMPLETE SPECIFICATION.
Improvements in Sorting or Sifting Apparatus.
I, GUSTAV EISNER of Hanau-on-the-Main, Hesse, Fallbachstrasse No. 2,
Germany, Brewer, 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 :-
This invention relates to a sorting or sifting apparatus the cylinder of which has
its sifting surface formed of a series of parallel bars of elongated cross sectional
form mounted in the ends in such a manner that the passage or opening between
the bars can be altered by rotary movement imparted uniformly to all the bars.
This is effected by means of a peculiar adjusting device. Such device comprises
arms on the axial pivots of the parallel bars, the said arms being connected to
links mounted upon a ring arranged to rotate on the cylinder end and by the rotation
of which ring the arms are moved, all the bars being shifted simultaneously.
In the accompanying drawings
Fig. 1 illustrates a sorting apparatus constructed according to this invention, the
cylinder in this case formed of two smaller cylinders connected end to end, being
shown partly in longitudinal elevation and partly in section.
Fig. 2 is a part elevation of the end of the cylinder and the adjusting device to a
larger scale.
Fig. 3 is a part cross section through the cylinder, also to a larger scale.
Fig. 4 shows a portion of the adjusting device in longitudinal section on the
line of Fig. 2.
Fig. 5 illustrates the mode of mounting the bars.
Fig. 6 is a cross section to a still larger scale of one form of sifting bar.
A are the parallel bars of elongated form in cross section, the pivots or
journals a of which are adapted to rotate in the ends B 'B' of the cylinder. It is
advantageous to make the bars A in cross section of the form shown in Fig. 6.
For the purpose of stiffening or supporting the bars A, rings C are provided which
are retained at equal distances apart by means of distance pieces c, and in which rings
rest cylindrical parts a¹ of the bars. The bars A are retained in the rings B and C
by means of ring segments d.
e,
In order to enable the bars to be moved simultaneously, one set of ends of the
pivots or journals a are provided with arms a² connected with link rods which
are secured to a ring E that is capable of being rotated relatively to the cylinder
end B. On rotation of the ring E in the direction of the arrow Fig. 2, the
position of the link rods e and arms a² relatively to each other will be varied (see
dotted position in Fig. 2), because the bars A follow the movement of the arms a²,
and consequently the distance between the adjacent parts of the said bars will
be increased. A contrary effect will be produced by moving the ring E in the
opposite direction.
As shown in Fig. 1, the axle f of the cylinder passes through bosses 6 from
which arms extend to the cylinder ends B, and there may be arranged on one axle.
a number of cylinders, as I and II, connected together to form the sifting cylinder,
each cylinder being provided with a separate adjusting device, so that the sifting
cylinder will be divided into sections or compartments which can be adjusted for
equal or for different degrees of fineness according to requirement.
The connection of the cylinders forming the sections or compartments may
conveniently be effected in the manner ordinarily employed in sorting machinery.
The sifting cylinder is provided with a supply inlet g and discharge outlet /.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what
I claim is
1. A sorting or sifting apparatus having a cylinder or cylinders provided with

page_text: parallel bars which can be rotated about their axes so as to vary the space between
adjacent bars, substantially as and for the purposes specified.
2. In a sorting or sifting apparatus of the kind referred to in the preceding
claim, a cylinder having parallel bars A of elongated cross section, the pivots or
journals a of which bars are mounted in the cylinder ends B B' and are provided
at one end with arms a² which are connected to link rods e secured to a ring E
movable relatively to the cylinder end B, so that hy rotating the said ring E all
the bars A are moved about their pivots or journals, substantially as and for the
purposes specified.
1003
G. EISNER,
By L. W., per F. B.