IMPROVED MACHINERY FOR CLEANING or Purifying FLOUR LEAVING BOLLING HOUSES
Year: 1875

page_text: LETTERS PATENT to Jules Aubin, of Boulevard de Strasbourg,
No. 23, Paris, Miller, for the Invention of "IMPROVED MACHINERY
FOR CLEANING or Purifying FLOUR LEAVING BOLLING HOUSES."
Sealed the 6th October 1875, and dated the 17th April 1875.
PROVISIONAL SPECIFICATION left by the said Jules Aubin at the
Office of the Commissioners of Patents, with his Petition, on the
17th April 1875.
I, JULES AUBIN, of Boulevard de Strasbourg, No. 23, Paris, Miller,
do hereby declare the nature of the said Invention for "IMPROVED
MACHINERY FOR CLEANING OR PURIFYING FLOUR LEAVING BOLLING HOUSES," to be
as follows:-
In ordinary systems of sifting or purifying flour it is necessary in
order to do so at all effectually to cause it to undergo several manage-
ments by passing it again and again through apparatus for separating
the light or coloured parts from the pure flour itself. These systems
require in the purifying apparatus a considerable motive power, and

page_text: occasion an expensive method of working and a great loss of time, while
after all the purification effected is very imperfect.
The object of my Invention is an apparatus for effectually sifting
flour, which obviates these inconveniences, and it consists in an arrange-
ment of aspiring sifting machine, which I proceed to describe.
The apparatus is composed of a box provided with compartments,
and furnished at each end with two supports, receiving the shaft of a
sifting drum animated with a rotating movement. The products of the
sifting fall into each of the compartments down an inclined planc,
which directs them towards a contracted opening at the base of a 1
conduit or column of aspiration. The different products of the sifting
fall through the openings into a trough. This trough is provided with
inclined planes to facilitate the flow of the products through flexible
conduits leading to the sacks to receive the flour.
Before each contracted opening is arranged an aspirating column of 1
air, debouching in the upper part of a sort of chamber. In this chamber
at the upper part is arranged a ventilator animated with a rapid rotative
movement. The lower part of the chamber is provided with two com-
partments arranged so as to form hoppers at their tops, and prolonged
downwards by vertical conduits, which lead one into the sacks and the 2
other into a horizontal conduit. In the interior of this horizontal
conduit acts an endless screw, which directs the products into a sack by
a vertical conduit. The lower end of each of these conduits is provided
with a valve (basane), which prevents the aspiration through these
conduits of the air excited by the ventilator.
The force of the aspiration of the ventilator may be regulated by
means of an upper register connected to a cord within reach of the
workman.
2
Each of the compartments is provided with a similar arrangement,
whilst the disposition of the ventilator shafts is such that the quickness 3
of their rotation can be varied at will so as to suit the nature of the
material to be sifted

page_text: filed by the said Jules Aubin in the Great Seal Patent Office on
the 15th October 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JULES
AUBIN, of Boulevard de Strasbourg, No. 23, Paris, Miller, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of April, in the year
of our Lord One thousand eight hundred and seventy-five, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Jules Aubin, Her special license
that I, the said Jules Aubin, my executors, administrators, and
assigns, or such others as I, the said Jules Aubin, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED
MACHINERY FOR CLEANING OR PURIFYING FLOUR LEAVING BOLLING HOUSES," upon
the condition (amongst others) that I, the said Jules Aubin, my exe-
cutors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Jules Aubin, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
In ordinary systems of sifting or purifying (dressing) flour it is
necessary in order to do so at all effectually to cause it to undergo
several managements by passing it again and again through apparatus
for separating the light or coloured parts from the pure flour itself.
These systems require in the purifying apparatus a considerable motive

page_text: power and occasion an expensive method of working and a great loss of
time while after all the purification effected is very imperfect.
The object of my Invention is an apparatus for effectually sifting
flour, which obviates thesc inconveniences, and it consists in an arrange-
ment of aspiring sifting machine, which I proceed to describe with
reference to the accompanying Drawings, of which Figure 1 is a front
elevation of one of the apparatus; Figure 2, sectional side view; and
Figure 3, a partial plan.
The apparatus is composed of a box a provided with compart-
ments b, b, b, and furnished at each end with two supports, receiving
the shaft of a sifting drum c animated with a rotating movement.
The products of the sifting fall into each of the compartments down an
inclined plane d, which directs them towards a contracted opening e at
the base of a conduit or column of aspiration. The different products
of the sifting fall through the openings e, e, e, into a trough g. This
trough is provided with inclined planes to facilitate the flow of the
products through flexible conduits h, h, h, leading to the sacks to
receive the flour. With ordinary systems the contents of these sacks
would be carried to mechanical winnowers or sifters, or into special
bolting machines, in order to purge the flour from the light or coloured
particles mingled with it. In my system, on the contrary, all those
operations arc dispensed with, and I obtain a complete purification
(dressing) by one operation.
Before each contracted opening e, e, e, is arranged an aspirating
column of air f, debouching in the upper part of a sort of chamber i.
In this chamber at the upper part is arranged a ventilator animated
with a rapid rotative movement. The lower part of the chamber ; is
provided with two compartments j, k, arranged so as to form hoppers
which
at their tops, and prolonged downwards by vertical conduits j³, k²,
lead one into the sacks and the other into a horizontal conduit l. In
the interior of this horizontal conduit acts an endless screw, which
directs the products into a sack by a vertical conduit ". The lower
end of each of these conduits j' and ¹ is provided with a valve (basane),
which prevents the aspiration through these conduits of the air excited
by the ventilator.
The force of the aspiration of the ventilator may be regulated by
means of an upper register m connected to a cord n within reach of the
workman.

page_text: Each of the eight compartments b, b, b, is provided with a similar
arrangement, whilst the disposition of the ventilator shafts is such that
the quickness of their rotation can be varied at will so as to suit the
nature of the material to be sifted.
In the Drawings I have shown four groups of sifters with two
ventilators, but I do not limit myself to that number.
The action of the apparatus is as follows:-The products of the
and
sifting thrown from the drum fall into the compartments b, b, b,
At this
from thence flow through the orifices e into the trough g.
moment the aspiration of the fan maintains in suspension the light
matters foreign to the flour, which fall perfectly purified into the
trough through the canvas conduit h, the light particles on the other
hand being drawn by the column of air f to the upper part of the
chamber i, and according to their degree of density some fall into the
hopper j, and others into the hopper k, while the lightest of all escape
altogether through the conduit for the draught of air.
As may be required, and to facilitate the access of the more or less
light particles, the top of the middle partition of the hoppers j and k
can oscillate from the right to the left. This oscillation is effected by
means of a handle or fly wheel arranged exteriorly to the reach of the
workman.
From the above description of my system, the base of which is to
effect the division into several degrees of the products of bolling, upon
each of which degrees one effects singly but simultaneously the purifi-
cation (dressing and separation) of the light and coloured particles, which
may be mingled therewith, it will be perceived that I thus dispense with
the long and expensive managements, requiring considerable motive
power at present in use.
I do not wish to limit myself to the exact arrangement of fan sifters
above described, as I can place them differently beneath the sifting box
or otherwise, the essence of my Invention here being the carrying
out of my purifying (dressing or separating) system in one single
apparatus.
And having now described the nature of my said Invention, and
in what manner the same is to be performed, I declare that I claim,-

page_text: machine for the immediate and direct purification (dressing and
separating) of the products of grinding, substantially as herein-before
described and shown in the accompanying Drawings.
Secondly. The construction and employment of aspirators acting
singly but simultaneously upon each of the grits or semonles proceeding
from the grinding, as herein-before described and shown in the accom-
panying Drawings.
In witness whereof, I, the said Jules Aubin, have hereunto set my
hand and seal, this Eighth day of October, One thousand eight
hundred and seventy-five.
Witness,
CH. ARMENGAud, Jr.,
Civil Engineer,
Bd. Strasbourg, 23,
Paris.
J. AUBIN. (L.S.)