A New or Improved Machine for Sorting Hulled Grain from Unhulled Grain and Chaff.
Year: 1891

page_text: Date of Application, 5th Dec., 1891-Accepted, 9th Jan., 1892
COMPLETE SPECIFICATION.
A New or Improved Machine for Sorting Hulled Grain from
Unhulled Grain and Chaff.
I, EUGEN REVERDY, of 14 Am Markt, Bremen, in the Empire of Germany,
Factory Manager, 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 the separation of grain preferably such with a loose hull
or husk as rice, millet, etc., into hulled grain unhulled grain and chaff and it
consists in a machine for this purpose based upon the principle that by giving a
circular swinging movement to a long board or surface inclined downwards from the
horizontal in two directions and having side walls or flanges along its longer sides,
mixtures such as that to be sorted, placed on the board at the uppermost end will
become automatically sorted in their movement of progression to the other end of
the board, the specifically heavier parts such as the hulled grain occupying the
lower side of the board, the lighter parts such as the husks occupying the higher
side of the board and the parts of medium weight such as the unhulled grain
occupying the middle of the board. The board must be hung in slings or other-
wise supported to admit of a circular movement being given to it. A hopper feeds
the mixing materials at the upper end and at the lower end the stream is divided
on the board by suitable hinged plates which deflect the materials into separate
receiving hoppers so that the sorted products may be received separately.
In the annexed drawings a machine is shown in which three such sorting boards
are combined to act simultaneously.
Fig. 1 is a longitudinal section on line y y of Fig. 2.
Fig. 3 is a cross section of the machine on line
Fig. 2 is a plan view thereof.
Figs. 4 and 5 illustrate a modified construction.
of Fig. 1, and
a a a are the sorting boards with slope in two directions, the sorting boards are
divided by side walls as shown. Each is fed from the hopper T. The three
boards together are supported by slings 9 from a suitable frame and the circular
movement is given by the rotation of the shaft w with excentric or crank d
revolving in a bearing m on the sorting board.
At the lower end each board has the movable plates i or i¹ which can be adjusted
so that the materials are carried from a greater or less breadth of the board into
the respective receiving hoppers c c¹ c³.
The mixed materials in passing along the board become separated according to
their specific weight. The hulled grain falls into c the unhulled grain and chaff
into c. The intermediate receiver serves for receiving, when the deflecting
plates i or are adjusted therefor, such grain as may not be perfectly sorted so that
it may be passed again through the machine.
In place of putting the deflecting plates i on the boards a, they may be placed on
the hoppers ccc...as in Figs. 4 and 5 (Fig. 4 being a section on line z z of Fig. 5).
The receiving hoppers are connected to the boards to partake of the same move-
ment, but if preferred, stationary hoppers may be used. These Figures 4 and 5
also illustrate the method of adjusting the deflecting plates for sorting into two
or three divisions.
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 corting machine commcinin

page_text: to be moved in a circular manner, and a hopper or feeder for supplying the mixture
to be sorted to the board at or near the upper end thereof.
2. In the sorting machine described, the adjustable deflecting plates į or i¹ on or
at the end of said board to divide the products to fall into separate receivers.
Dated this 5th day of December 1891.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents for the Applicant.