Year: 1896

page_text: 1, CARL ARTHUR ISRAEL of Dresden A, in the German Empire, Millwright,
Florastrasse 14, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improvement in sifting-machines and has for its
purpose to advance the materials to be sifted on a horizontally revolving and
oscillating sifter.
This sifting-machine consists of a long open box A which is brought into a
horizontally revolving and oscillating movement by an excentrically revolving
B shaft. The long-shaped box is divided into two sifting departments b and c by
a partition-wall a. The latter reaches from the one short side of the long box
nearly to the opposite short side so that each sifting department is as long as the
box itself. The materials to be sifted wander from the beginning of the one
department to the end of the other department and leave here the sifting machine.
In order to advance the materials to be sifted automatically the sieve is so
arranged on the sifting-way that it forms a gutter one side D of which is steeper
than the other C, so that, when the particles of the material during the revolving
and oscillating movement of the sifting machine are thrown from the less steep
side of the gutter to the steeper side. Traveling up the latter and falling down
again they will come to a point which is situated nearer to the discharging opening
as the point of the less steeper side, they were before. Thus each particle of the
materials to be sifted wanders automatically to be discharging hole.
Deted this 10th March 1806
C. A. ISRAEL,
By his Agent, Arpad Bauer.
CARL ARTHUR ISRAEL, Millwright Dresden A, Florastrasse 14 Saxony in
the German Empire 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 :-
On the drawing filed with my Provisional Specification is shown a sifting
machine provided with the improvements. It represents
Fig. 1 a sectional elevation,
Fig. 2 a vertical section,
Fig. 3 a plan
Fig. 4 & 5 different sections of sieves of this sifting-machine.
The sifting-box A, receiving a horizontally oscillating circular motion by means
of the crank-shaft B is divided into two communicating spaces b and c by means of
the partition wall a.

page_text: In each space and c is arranged a flat gutter, consisting of two long strips C
& D of sifting cloth, the strip which is fastened to the partition wall a being
narrower than the other being fastened to the wall of the sifting box, so that the
broad strip C is not as sloping as the narrow strip D.
By means of this arrangement, the progressing of the materials to be sifted is
attained in the following manner. Each grain is compelled to make a spiral
motion, because it is more detained in its progression when going over the sieve D
than when going over the sieve C. During each revolution of the crank-shaft B
each grain progresses a little piece in the longitudinal direction of the gutter until
it leaves the gutter.
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:
In sifting-machines the combination of a sifting box A, having a horizontally
oscillating circular motion, with the partition wall a forming the cominunicating
spaces b&c and a sieve-gutter arranged in said spaces, the strip D of said gutter
-being more inclined than strip C as and for the purpose set forth.
Berlin, dated this 14th day of December 1896.
C. A. ISRAEL,
By his Agent, Arpad Bauer.