Method and Apparatus for Purifying or Sorting Grits or Semolina and other Granular Substances by Means of a Single Air Current.
Year: 1891

page_text: Date of Application. 24th June, 1891
Complete Specification Left, 22nd Mar., 1592-Accepted, 30th Apr., 1892
PROVISIONAL SPECIFICATION.
Method and Apparatus for Purifying or Sorting Grits or Semolina
and other Granular Substances by Means of a Single Air
Current.
1. CARL HAGGEN MACHER, of 5 Rudolfs quai 8, Budapest, Hungary, Director
of Flour Mills, do hereby declare the nature of this invention to be as follows:-
In the various processes and apparatus heretofore employed for cleansing or
purifying grits, semolina or other granular substances, these substances are generally
passed repeatedly through divided currents of air, in order to effect the sorting or
purifying thereof as perfectly as possible.
According to the present invention the most perfect sorting or purifying of such
granular substances is obtained by means of a single air current which remains
undivided during its entire course, this being effected in such manner that the air
current passing through the apparatus in an upward direction, is made to meet the
granular material descending by gravity and to raise the separate granules to a
greater or less height in proportion to their weight, thereby causing them to fall
into separate receptacles arranged at different heights below and along the air
current.
By this means the grits or other granular material will become sorted in such
manner that the lightest granules will be contained in the uppermost receptacles and
the heaviest in the lowermost ones.
The accompanying drawing shews various arrangements of apparatus for carrying
out this method of operating I will proceed to describe the practical carrying out
of the process with reference thereto.
As the several constructions are similar to each other as regards the essential
features, the same parts in each figure are indicated by the same letters of
reference.
Fig. 1 shews a longitudinal section of one construction. Fig. 2 shews a vertical
section of the same on line A-B Fig. 1, and Fig. 3 shows a horizontal section on
line C-D Fig. 1.
The air current or blast to be employed for sorting or purifying is led in the
direction of the arrow through the casing J of the apparatus provided_with_a
regulating slide "
either the branch pipe & for the discharge being connected to the
suction of the fan or blower, or the inlet opening c d for the air current being
connected to the discharge of such fan.
The grits, which have been previously sorted by screening according to the size
of granules, pass through the hopper e on to the distributing shoot from which
they pass on to the feeding roller g and thence through the supply shoot / provided
with a regulating slide i, into the rising air current, by which they are raised and
sorted. The heaviest particles fall into the bottom compartments of a register
frame, while the lighter and lightest particles fall, in proportion to their weight,
into the middle compartments, so that the lighter they are the higher up they
are deposited, and lastly the grits-offal are deposited in the uppermost compartments
of the frame.
From these compartments the grits and grits-offal descend through the register
frame into the collecting boxes 1. The different kinds of grits and grits-offal
are led off through shoots n n which are connected to openings in the partitions m
of the receptacles l.
The several partitions forming the receptacles & m are capable of being adjusted
by sliding them up or down behind each other, so as to make each compartment of
greater or less width.

page_text: When adjusted, they are secured in position by setting screws r.
Figs. 4, 5 and 6 shew a second arrangement of the apparatus; Fig. 4 shews a
longitudinal section, Fig. 5 a vertical section and Fig. 6 a horizontal section on the
line GH Fig. 4.
In this arrangement the register frame is made shorter than in the first
described one, so that at the back of the frame two collecting boxes or hoppers o
are situated.
The grits-offal is consequently propelled beyond the register frame into the
collecting boxes o.
A. flapp placed between the latter serves for regulating the qualities in these
compartments. The flaps in this arrangement serves for cutting off the
detrimental air current, in particular in the case when the apparatus works with
air pressure.
Fig. 7 shews a longitudinal section to a smaller scale than the preceding, of an
arrangement which differs from the preceding ones in that the register frame is
done away with, the vertical walls m of the collecting compartments forming the
partitions for the several descriptions of grits and grits-offal.
In all these constructions the compartment and o can be variously constructed
otherwise than shewn on the drawings. The register frame, although it is
advantageous, could also be entirely omitted in the first and second arrangements
without great disadvantage to the object aimed at.
If the described process is used in a flour mill, the separate apparatus described
is to be considered as a unit, of which, in practice, any desired number can be
arranged in a row.
Dated this 24th day of June 1891.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Method and Apparatus for Purifying or Sorting Grits or Semolina
and other Granular Substances by means of a Single Air
Current.
1, CARL HAGGENMACHER of 5 Rudolfs quai 8, Budapest, Hungary, Director of
Flour Mills 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:-
In the various processes and apparatus heretofore employed for cleansing or
purifying grits, semolina or other granular substances, these substances are generally
passed repeatedly through divided currents of air in order to effect the sorting or
purifying thereof as perfectly as possible.
According to the present invention the most perfect sorting or purifying of such
granular substances is obtained by means of a single air current which remains
undivided during its entire course, this being effected in such manner that the air
current passing through the apparatus in an upward direction, is made to meet the
granular material descending by gravity and to raise the separate granules to a
greater or less height in proportion to their weight, thereby causing them to fall
into separate receptacles arranged at different heights below and along the air
current.
By this means the grits or other granular material will become sorted in such
manner that the lightest granules will be contained in the uppermost receptacles
and the heaviest in the lowermost ones.
The drawing accompanying my Provisional Specification shews various arrange-
ments of apparatus for carrying out this method of operating: 1 will proceed to
describe the practical carrying out of the process with reference thereto.
As the several constructions are similar to each other as regards the essential

page_text: features. the same parts in each figure are indicated by the same letters of
reference.
Fig. 1 shews a longitudinal section of one construction. Fig. 2 shews a vertical
section of the same on line A-B Fig. 1, and Fig. 3 shows a horizontal section on
line C-D Fig. 1.
The air current or blast to be employed for sorting or purifying is led in the
direction of the arrow through the casing J of the apparatus provided with a
regulating slide a, either the branch pipe for the discharge being connected to the
suction of the fan or blower, or the inlet opening ed for the air current being
connected to the discharge of such fan.
The grits, which have been previously sorted by screening according to the size
of granules, pass through the hopper e on to the distributing shoot from which
they pass on to the feeding roller and thence through the supply shoot / provided
with a regulating slide into the rising air current, by which they are raised and
sorted.
The heaviest particles fall into the bottom compartments of a register frame k,
while the lighter and lightest particles fall, in proportion to their weight, into the
middle compartments, so that the lighter they are the higher up they are deposited,
and lastly the grits-offal are deposited in the uppermost compartments of the frame.
From these compartments the grits and grits-offal descend through the register
frame into the collecting boxes l. The different kinds of grits and grits-offal are
led off through shoots n n which are connected to openings in the partitious m of the
receptacles l
The several partitions forming the receptacles 1 m are capable of being adjusted
by sliding them up or down behind each other, so as to make each compartment of
greater or less width.
When adjusted, they are secured in position by setting screws r.
Figs. 4, 5 and 6 shew a second arrangement of the apparatus; Fig. 4 shews a
longitudinal section, Fig. 5 a vertical section and Fig. 6 a horizontal section on the
line G H Fig. 4.
In this arrangement the register frame & is made shorter than in the first described
one, so that at the back of the frame two collecting boxes or hoppers o are situated.
The grits-offal is consequently propelled beyond the register frame into the
collecting boxes o.
A flap placed between the latter serves for regulating the qualities in these
compartments.
The flaps in this arrangement serves for cutting off the detrimental air currents,
in particular in the case when the apparatus works with air pressure.
Fig. 7 shews a longitudinal section to a smaller scale than the preceding, of an
arrangement which differs from the preceding ones in that the register frame kis
done away with, the vertical walls of the collecting compartments forming the
partitions for the several descriptions of grits and grits-offal.
In all these constructions the compartment and o can be variously constructed
otherwise than shewn on the drawings. The register frame k, although it is
advantageous, could also be entirely omitted in the first and second arrangements
without great disadvantage to the object aimed at.
If the described process is used in a flour mill, the separate apparatus described
is to be considered as a unit, of which, in practice, any desired number can be
arranged in a row.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. The method of sorting or purifying grits, semolina and other granular material
by means of a single undivided air current, by causing such air current to pass in
an upward direction through a casing into which the grits or other material to be
acted upon are made to pass in a descending direction, a series of separate collecting

page_text: compartments being arranged immediately below the air current, so that this in
acting upon the grits effects the sorting thereof in the said compartments according
to the weight of the particles, substantially as described.
2. In apparatus for carrying out the method of sorting referred to in the preceding
claim, arranging the collecting compartments with a sliding adjustment for the
purpose of regulating at will the different quantities and qualities of the grits to be
sorted, substantially as described.
Dated this 22nd day of March 1899
ABEL & IMRAY,
Agents for the Applicant.