An Improved Separating or Assorting Machine for Granular or Pulverulent Materials or Substances.
Year: 1889

page_text: Date of Application, 15th May, 1889-Accepted, 12th Apr., 1890
:
COMPLETE
SPECIFICATION.
An Improved Separating or Assorting Machine for Granular or
Pulverulent Materials or Substances.
I PAUL JANSSEN of Hamburg Merchant, 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 assorting machine consists of a closed sieve frame in which are one or more
sieves arranged one below the other.. To thic sieve frame is given a rotary motion.
To render the explanation of my improved machine more clear I have appended
the accompanying sheet of drawings, in which Figure 1 shows a longitudinal sectional
view of the machine; Figure 2 shows a transverse sectional view of the same; Figure 3
shows a plan view of one of the sieves; Figures 4, 5, 6 and 7 are views of the zig-zag
covering or formation which I adapt or apply to the sieves.
a is the frame, which is closed and contains the sieves arranged one below the
other. The frame a hangs on four rods or arms i, so that it may move freely. At
the ends of the frame a are situated disc cranks c fixed on the vertical shafts e. The
disc cranks c are connected to each other and receive their motion from the bevel
wheels f, and the horizontal shaft g. 1 are the funnels or inlets through which the
matter to be sorted or sifted is brought to the sieves, and m are the outlets for the
sorted or sifted matter.
The sieves are arranged and formed in such a manner that the coarsest part of the
matter remains on the first sieve, whilst the finer drops through the same on to the
second sieve, the coarsest part aforesaid being urged to its outlet by the motion given
to the sieve frame and the particular shape of the zig-zag covering or formation of the
sieve. That portion of the matter which has dropped on to the second sieve is divided
into two parts, one of which drops on to the third sieve, both of the said parts of the
matter being driven to their respective outlets in the manner above referred to and
hereinafter described.
The arrangement and number of the outlets for the sorted or sifted matter will
depend upon the number and arrangement of the sieves, and do not form a part of
the present invention.
The matter to be sifted or sorted is moved with the sieves exactly in the same circles
when the surfaces of the sieves are level or smooth, but when the surfaces are notched or
grooved, as shown, it will pass up the inclined surface into a notch or groove further
on if the motion of the sieves or sieve frame is parallel to, or in the same direction as,
the inclined surface of the zig-zag covering or formation of the sieves. Upon further
motion of the sieves or sieve frame the matter will describe a circle and then strike
against the vertical surface in front of the first notch or groove, by which it is
prevented from passing back into the first notch or groove. It then passes, by the
continued motion of the sieves or sieve frame, into the next notch or groove
and so on.
Figures 4, 6 and 7 show the various shapes which the zig-zag covering or formation
of the sieves may assume.
This arrangement of zig-zag assorting or separating surface of the sieves has the
following advantage, namely that the direction of motion of the sieves or sieve frame
may be varied as necessity may require, the matter always being urged forwards from
the inlet to the outlet, and this advantage may be turned to good use should the
covering or formation of the sieves on one side or the other become damaged since the
whole operation may in such a case be carried out by simply reversing the direction
of motion of the machine.

page_text: 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
The configuration of the covering or formation of the sieves of assorting or separating
machines, substantially as and for the purposes described herein and illustrated by the
accompanying drawings.
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicant.