IMPROVEMENTS IN THE CONSTRUCTION AND ARRANGEMENT OF MACHINERY OR APPARATUS FOR REDUCING AND TREATING CEREALS AND CEREAL PRODUCE FOR THE MANUFACTURE OF GRITS, SEMOLINA, OR FLOUR
Year: 1883

page_text: LETTERS PATENT to William Henry Williamson, of Wakefield, in the County
of York, Consulting Corn Mill Engineer for an Invention of IMPROVEMENTS
IN THE CONSTRUCTION AND ARRANGEMENT OF MACHINERY OR APPARATUS
FOR REDUCING AND TREATING CEREALS AND CEREAL PRODUCE FOR THE
MANUFACTURE OF GRITS, SEMOLINA, OR FLOUR
PROVISIONAL SPECIFICATION left by the said William Henry Williamson
at the Office of the Commissioners of Patents on the 16th January 1883.
WILLIAM HENRY WILLIAMSON of Wakefield in the County of York,
Consulting Corn Mill Engineer, "IMPROVEMENTS IN THE CONSTRUCTION AND
ARRANGEMENT OF MACHINERY OR APPARATUS FOR REDUCING AND TREATING
CEREALS AND CEREAL PRODUCE FOR THE MANUFACTURE OF GRITS, SEMOLINA OB
FLOUR
#
In machinery as heretofore usually arranged for reducing and treatment of
cereals and cereal produce it is well known rolls and other machines are now much
used in lieu of "stones" and my invention is more especially designed for use in
combination with rolls placed horizontally or vertically and where a series of rolls
are employed on one long frame or with rolls above each other, but it may be
applied with benefit where stones disintegrating or decorticating discs are similarly
used. For the sake of clearness, however, I will in describing the nature of my
invention assume that rolls are employed as the cracking or reducing media.
With each pair or double pair of cracking or grinding rolls (which I prefer) I
combine with the hood or cover an aspirator from which the air is partially
exhausted to which end the aspirator may be in communication with a fan or an
exhausted trunk. This aspirator has for objects to purify and assort the cereal
product whilst feeding or aspiration of feed preparatory to the passage of its heavy
portions between the rolls, as also to exercise a cooling influence upon the roller
casing. Into this aspirator the cereal product is introduced with the aid of a feed
roller with regulating alide so as to fall through the aspirator on its way to the
cracking or grinding rolls, the feed rolls may be at the foot of the aspirator and
immediately over the rolls I prefer it at top to feed the material into the aspirator;
as it falls it is caused to come in contact with suitable guides or deflectors finely
perforated or otherwise and so arranged that the course of the descending material
may be disturbed or baffled, and, also, it is brought into contact with currents of
air admitted through suitable apertures into the aspirator casing exhausting also

page_text: from the roller casing. Thus the cereal product as it falls from one to the other of
the deflectors is purified, that is to say, the lighter portions which are objectionable
are eliminated, but the heavier particles of these lighter portions are guided by
suitable deflectors preferably over the rolls and do not pass between them, but mix
with the main portion of the cereal after it has passed between the rolls and pass
with it to a subsequent stage, at the same time extromely light and fluffy matter
passes from the aspirator into the exhaust trunk where it may be caught in suitablo
traps or dust rooms. It will be understood in this arrangement that two qualities
of matter pass from the hopper under cach pair or set of rolls, namely, that which
has been between the rolls, and which constitutes the bulk of the cercal product,
and that of medium weight, such as heavy bran for example, which has been
diverted from its perpendicular course on to the deflectors and so carried under the
rolls without having passed between them. This latter may, however, be conducted
out of the machine if desired. This would be the mode of operation in machines
arranged to succeed each other as in the process of gradual reduction and with
suitable separating and sizing operations between each reduction. Where convenient
it is desirable to arrange the sets of rolls with their respective aspirators one
under another, and, in such an arrangemont, between every two sets of rolls I
interpose a suitable sizing sieve or sieves agitated in any convenient manner for
separating that which is, from that which is not, to pass through the lower set of
.rolls.
In one modification the sizing sieve or sieves can be built in between the lower
or receiving hopper of the upper set of rolls, and the upper or feeding hopper of
the lower set of rolls, and so form a neat arrangement for gradually reducing the
cercal under treatment by successive operations and which may be repeated for
any desirable number of breaks. A sizing sieve can be combined on top and with
aspirators attached to a single or double pair roller mill. Should it not be
convenient to dispose one above another in this way the aspirators, rolls and sizing
sieves so combined may be arranged side by sido or divided into groups of two or
more and placed side by side and the products be raised from the lower exit of last
set of rolls of each machine or group to the feed hopper of the next set in succeeding
machine or group and so on,-or on their way from one set of rolls to the aspirator
of another set the products may be subjected to intermediate treatment as, for
example, by being caused to pass through a dusting or drossing reel.
According to one arrangement I employ grooved rolls caused to rotate at
differential speeds, one roll of a pair rotating in fixod bearings the other in
bearings free to move for a limited space in the plane of the axes of the two rolls
for parallel adjustment, and at right angles to those axles. This latter motion is
provided for to allow of the rolls being separated in case of need, and for pressing
against the roll in fixed bearings in crushing.
"
The bearings of the shifting roll are formed in levers and are pressed towards tho
fixed roll by the action of these levers (and springs) the longer ends of which levers
can be acted upon at will by adjustable springs so that the pressure tending to
force the rolls together can be adjusted as desired. To readily relieve the levers of
the pressure of the springs the ends of the long arms of the levers are provided
with eccentrics which when rotated to one extreme will cause gluts" to project
from the lever end to touch or to come into contact with and take the pressure of
the adjustable springs, and vice verad release the pressure when eccentric or at
other extreme. The arrangement is such that by turning the eccentrics the long
armis of the levers can be brought under the action or load of the springs or to
allow the rolls to move apart and without pressure. I construct a feeding device
for roller mills and other milling machines as follows:-I provide a frame for the
adjusted feed plate to slide in, and by means of a screw at each end regulate the
two ends of the feed plate in the said frame,-the frame has a pivot at each end so
that it (with the feed plate) is free to oscillate and I so arrange it, placed in an
inclined position and with the parts above the pivot heavier than those below that
the overlianging heavy top part tends to keep the bottom edge of feed plate against

page_text: the roll, or a stop (which I prefer) which allows a very small distance from the
roll. The back of the feed plate or frame below the pivot is exposed to be
pressed against by the material fed into the hopper, and its operation is as
follows: When the hopper is about full the weight of material is sufficient to
press against and push away the feed plate from the feed roller allowing the
material to pass over the roll, and it is prevented from pushing it an excessive
distance by a screw that regulates the distance at the middle of a frame. The
object is to prevent the feed overflowing the feed hopper. The parts above the
pivot are sufficiently heavy to keep the feed plate to its work ordinarily; but not
so heavy that they cannot be overcome by an excessive weight of material in the
hopper which will cause the feed plate to opon or yield a suitable distance and let
the feed pass; a handle is fixed outside on the pivot to ease the feed now and then
when it is irregular.
In some cases I combine an aspirator with a two pair roller mill in such a
manner that the heaviest portions of the cereal product may fall to one pair of rolls
and the intermediate portions to the other pair of rolls. Or two aspirators back to
back may be used, so arranged in connection with two sets of rolls that the
intermediate product from the first can be elevated to pass through the second
aspirator and be thus recleaned before going through the second pair of rolls, the
crushed produce of each pair of rolls being kept apart.
In some cases I arrange apparatus as follows:-
Four pair rolls with four aspirators combined according to my invention, have
arranged above them a sizing machine, such as described in the specification of
Letters Patent No. 1319 dated March 31, 1880 granted to myself and George
March and Samuel Bruce in such a way that the said sizing machine (preceded by
a dusting reel combined with it) may deliver its four separate qualities or sizes of
produce at the four corners, one size or quality into each of the four pairs of rolls;
and similarly I arrange an ordinary grading reel over a series of rolls arranged in
line to be combined with rolls or separate; but to grade and deliver each size of
material to the aspirator of each separate roller mill.
It will be understood by combining aspirator with each grinding or reducing
apparatus according to my invention in such a way that the aspirator forms not
only the purifier and ventilator but also the feeder and the material to be treated
falls to the grinding surfaces purified in a direct manner whilst grinding is cooled
and the aspirator or purifier and ventilation &c, as well as grinding apparatus can
all be regulated and watched by an attendant on the spot without his having to
leave the grinding apparatus in order to inspect the purifying apparatus &c, and
vice versa.
It will be understood that although I prefer in carrying out my invention to use
grinding apparatus constructed with rollers, yet other reducing machines in
common use may be so fitted and constructed with aspirators according to my
invention as with discs or disintegrators or stones and in such manner that the
aspirator will serve for feeding the material to be treated, for purifying it as it is
fed and for cooling the grinding apparatus, and preferably whero a series of
separate cracking or granulating machines are used, in the process of progressive
or gradual reduction, where the bran is aspirated away, between each reduction;
and also for the further reduction of seinolina to flour, then it will be understood
my object is to aspirate or purify the material or feed by means and in combination
with the reduction machines at these stages, and also to ventilate the case of such
machines in the manner and by the means described.
I am aware ventilation is applied to roller and millstone cases separately and in
eries for cooling the grinding, but my object preferably is to purify the material
s fed to the reducing or grinding machine and make the same exhaust media servo
o ventilate the case of machine as described in the details and combinations
onstituting my invention.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Henry Williamson in the Great Scal Patent Office on the
14th July 1883.
WILLIAM HENRY WILLIAMSON of Wakefield in the County of York,
IMPROVEMENTS IN THE CONSTRUCTION AND E
Consulting Corn Mill Engineer
ARRANGEMENT OR MACHINERY OR APPARATUS FOR REDUCING AND TREATING
CEREALS AND CEREAL PRODUCE FOR THE MANUFACTURE OF GRITS, SEMOLINA OR
FLOUR
In machinery heretofore used for the reduction and treatment of cereal and
cereal produce: roller mills with grooved or smooth rolls and other machines have
been employed for reducing purposes in lieu of millstones, and the reduction is
effected in one or more operations. My invention is more particularly designed for
use in combination with roller mills, arranged horizontally in one long frame, or
side by side, or placed vertically in floors one above another, so as to succeed each
other, and it may also be applied with benefit to disintegrators or decorticating
discs. where such are similarly used.
According to my invention with each pair or double pair of cracking or grinding
rolls I combine with the hood or cover an aspirator from which the air is partially
exhausted. This aspirator has for objects to purify and assort the cereal product
preparatory to the passage of its heavy portions between the rolls as also to exercise
a cooling influence upon the roller casing.
Into this aspirator the cereal product is introduced with the aid of a feed roller
with a regulating slide so as to fall through the aspirator on its way to the cracking
or grinding rolls, and as it falls it is caused to come in contact with suitable guides
or deflectors so arranged that the course of the descending material may be disturbed
or baffled, and that it may be brought into contact with currents of air admitted
through suitable apertures in the aspirator casing which exhaust also from the roller
casing. Thus the cereal produce as it falls from one to the other of the deflectors
is purified, that is to say the lighter portions which are objectionable are eliminated,
but the heavier particles of these lighter portions are guided by suitable deflectors
over the rolls and do not pass between them, but mix with the main portion of the
cereal after it has passed between the rolls and pass with it to a subsequent stage
while at the same time extremely light and fluffy matter passes from the aspirator
into the exhaust trunk where it may be caught in suitable traps or dust rooms
It will be understood in this arrangement that two qualities of matter pass from
the hopper under each pair or set of rolls, namely that which has been between the
rolls and which constitutes the bulk of the cereal product, and that of medium
weight such as heavy bran for example which has been diverted from its per
pendicular course on to the deflectors and so carried under the rolls without having
passed between them.
Referring to the accompanying three sheets of drawings;—
Figs. 1 and 2 shew a single pair roller mill in which there is combined with th
feed apparatus an aspirator or purifier. The object of the said arrangement is t
feed the material in a uniform stream into the aspirator, and to subject it t
currents of air in its passage to the rolls, by which means dust, fibrous matter
seeds, and shells or such matters as are lighter or smaller than the grain to b
reduced are eliminated or assorted. The aspirator is partially exhausted by mear
of a fan, or an exhausted trunk which may connect two or more roller mills; au
the exhaust is also employed to exercise a cooling influence upon the case enclosin
the rollers.

page_text: The cereal produce is admitted to the feed hopper a wherein a hinged frame b
fitted with a regulated feed slide b' is pressed towards the feed roll by means of
overhanging weights c, the stop screw c' preventing the feed gate opening more
than is desired. When a certain weight or overcharge of material has accumulated
in the feed hopper, more than is needful to maintain a regular feed, the weight of
the same pressing on the back of the feed slide frame, is sufficient to force it away
from the feed roll (within the limits allowed by the stop screw c') and allow it to
pass freely, and so prevent a stoppage of the feed; whilst the overhanging weights
bring the gate back to its normal position when the hopper is not too full. The
stream of material falls down through suitable deflectors or slots finely perforated
or otherwise, and so arranged that the material is brought under the action of
currents of air admitted by the apertures d d d dd, and these currents
purify and assort the material; the lightest matters are carried into the fan or
exhaust trunk e, the light shells settle and fall out through the spout ƒ at the back
of the machine, while the product intermediate between the lattor and the material
to be reduced at this stage is allowed to fall through the aperture g into the
receiving hopper below the rolls and so to pass along with the reduced material in
order that it may be subjected to reduction in subsequent machines where such
machines follow, or by movement of the valve h it may be discharged with the
lighter shells out of the spout fat the back of the machine.
JJJ Jare valves for regulating the wind at each stage, e' is a slide
controlling the wind for the whole machine. The roll case and receiving hopper
are cooled by exhaust communication through the aperture g. The method of
adjusting the rolls and applying or releasing the pressure will be described
presently.
Figs 3 and 4 shew in section and elevation a modification of the invention in
which two pairs of rolls are mounted in one frame with aspirator for each pair.
The rolls are placed back to back and one exhaust chamber e connects the two, an
exhaust fan e driven by the same belt or rope that gives motion to the rolls, is
placed under the machine, and in communication with the exhaust chamber c; the
receiving hoppers g² are each shewn distinct, but the fan may be differently placed,
and the receiving hoppers thrown into one, receiving from both sets or pairs of
rolls when working on the same class of work. J J J J are slides for
regulating the wind at each stage; gy are slides to effect cooling of the roller
case or receiving hopper. Figs 5 and 6 shew the application of this invention to
disintegrators or decorticating discs, which may be arranged in pairs as shewn, or
separately; the aspirator is mounted on the casing of the machine containing the
dises; the material is purified in passing through the aspirator and is received in a
worm conveyer by which it is passed to the "ear"
เ
or eye of each of the discs
and thence between the discs m to be reduced. The disc m is rotated by means of
a belt and idle pulley p, and this rotating disc operates against a fixed disc m¹
and is adjusted thereto by means well understood; upon the shaft or spindle of the
rotating disc I fix a fan e¹ the "ear" of which is in communication with the
exhaust chamber e of the aspirator, and exhausts from the same; the outlet for the
fan is shewn at o; the pulley p with its shaft is used when driving a pair of
disintegrators, combined as shewn.
The feed roll of the aspirator is in this case driven by worm and wheel and made
to drive the worm conveyer at the foot of the aspirator.
Fig 7 shows the arrangement of a number of reduction machines, in accordance
with this invention, designed to be operated as follows:-The machines are
numbered in the order I II III IV V and according as the machines adopted are
roller, disc or disintegrating machines, each is adjusted to operate more closely on
the material than that which precedes it, after the manner of gradually reducing
cereals. The whole grain is fed to machine I, the aspirator of machine I
exhausting any dust, light or small grains and seeds, which are preferably discharged
from the back of this reducing machine, and only the sound grain is reduced slightly,
this is lifted by the elevator A or otherwise conducted to the dressing reel A' which

page_text: dusts out the flour and some semolina made in the first reduction and the over-
fallings or what is not sifted out (and which consists of broken grain and grits with
a few pieces of shells) is passed to machine II. The aspirator of this machine
exhausts the shells and dust therefrom, the shells pass out at back, the grits or
intermediate product is drawn aside and passes down the aperture provided as
described into the receiving hopper below the machine; the purified broken grain
passes between the crushing or disintegrating surfaces of the machine, and is further
slightly reduced; and this with the grits before mentioned is conveyed to a second
dusting reel B' where it is deprived of its flour semolina. The overtails consisting
of broken grain, grits and shells not sifted out, are passed to machine III the
aspirator of which abstracts the shells which fall out at back, draws the grits or
intermediate product aside and allows it to fall to the receiving hopper of the rolls,
whilst the purified broken grain is still further crushed, and this with the latter
conveyed to a third dusting reel c', the operation being repeated over any desirable
number of machines and the grits lifted out at each aspiration. These grits are
conducted to a subsequent stage or through the receiving hopper to pass with the
crushed material to a subsequent stage in the order described. Here the crushing
surfaces of the machines grow closer and closer together. Thus the material gets
reduced with the broken grain and freed from bran the whole forming an automatic
and economical arrangement for reducing grain to semolina and flour, and saving
the expense of additional separate roller mills or reducing machines as now used for
"bleaching" or loosening the semolina from these grits. His the exhaust trunk con-
necting the aspirators of such a series of reducing machines and R is an exhaust fan
for operating the same which discharges into a dust collecting room or apparatus
conveniently placed. The roller case or receiving hopper of each machine is in
connection with and cooled by this exhaust apparatus as described.
In dealing with the partially ground material, termed semolina and middlings
and the flour formed in the process of producing the same, as described, I collect the
siftings from the bottoms of those of the dressing reels A'B'C' D'E' whose
contents may be advantageously dealt with together; the flour dust from
the first breaking A' is usually dark and unfit to be mixed with that of the subse-
quent stages and is rejected and sent to mix with the offals or refuse. The selected
semolinas and flours from the successive breakings or crushings as sifted from reels
A'B'C' D' E' are first deprived of flour which is sifted out by a separate dressing
reel, the overtails left which are not sifted out, and which consist of semolina and
middlings and some remaining flour dust, I pass to the combined dusting and sizing
machine shewn in Figs 8 and 9 which machine is for the purpose and is a
modification of the invention for which Letters Patent were granted to me, G. March
and S. Bruce under date 31 March 1880. In this machine a dusting or dressing
reel is combined with a sizing or sorting machine the object being to dust or sift
out the flour before commencing the assortment into size of the semolina and
middlings on the sieves of the sizing machine which latter sorting operation is
described in the specification of the prior Letters Patent just referred to. The
dusting reel is of the centrifugal pattern, and may be separately used for the
various purposes of dressing described in this specification; it comprises a barrel
screen of cylindrical shape S clothed with perforated metal, wire, silk or other
material used for sifting purposes; the ends of this barrel being caused to rotato
slowly upon and by four friction discs or rollers t t at the four corners of the
machine; or the barrel S may rotate on end pieces u ul fixed to the machine frame
and be driven by spur gear in lieu of the friction discs or rollers. The vanes or
beaters V which rotate at a high speed within the barrel screen, I place eccentri-
cally within the barrel; and not concentrically as in other forms of such reels, the
beaters rotating within a small distance of the bottom of the barrel S so as to
spread the material which tends to gather at that part, and by using beaters of less
diameter and disposed within the barrel as described I reduce the wear upon the
clothing of the barrel and lessen the great pressure on the part which lies at or
near the bottom when the reel is overfed, and thus I can dress briskly without

page_text: distorting the meshes of the clothing. In Figs 8 and 9 therefore this centrifugal
dressing reel is shewn to dust the flour from the semolina and middlings, which
flour is conducted over the side of the machine by the worm conveyor W, the over-
tails or semolina &c not sifted out, fall into the worm conveyor X and suitable
slides distribute it upon the sizing sieves below Y Y Y Y which assort it into
sizes,.cach size being discharged down a spout at one of the four corners of a sizing
machine such as described in specification of the prior Letters Patent above
referred to.
I place reducing machines or rolls below the sizing machine preferably one to
reduce each size of semolina to flour, and such reducing machines are fitted with
purifying apparatus in accordance with my invention. I prefer to use for this
purpose smooth rolls-rotating at differential speed and of the construction shewn
in Figs 3 and 4, each size of semolina etc passing through one of the purifying
apparatus of the machine to one pair of the rolls which reduces it to flour that is
then dressed through a reel finely clothed and sacked off as finished flour.
An ordinary grading reel for sorting semolina into size may be mounted above
and combined with reducing machines fitted with purifiers in accordance with my
invention each compartment of the reel or sort of material being delivered to
separate pairs of finished rolls with purifiers combined as described.
In mounting rolls I arrange one roll of a pair to rotate in fixed bearings and the
other in bearings free to move for a limited space in the plane of the axes of the
two rolls for parallel adjustment, and at right angles to those axes. This latter
motion is provided for to allow of the rolls being separated in case of need, and
for pressing the movable roll against the roll in fixed bearings in crushing.
The bearings of the shifting roll are formed in levers and are pressed towards
the fixed roll by the action of these levers (and springs). The longer ends of these
levers can be acted upon at will by adjustable springs so that the pressure tending
to force the rolls together can be adjusted as desired. To readily relieve the levers
of the pressure of the springs the ends of the long arms of the levers are provided
with eccentrics which when rotated to one extreme will cause "gluts" to project
from the lever end to touch or to come in contact with and take the pressure of
the adjustable springs and vice versa to release the pressure when eccentric or at
other extreme.
The arrangement is such that by turning the eccentrics the long arms of the
levers can be brought under the action or load of the springs or the rolls can be
caused to move apart and be relieved of prossure.
This method of adjusting rolls and of applying pressure is shewn in Figs 10, 11
and 12. a is a roll rotating in fixed bearings, b is a roll rotating in bearings
formed in the arms of two levers; c is the fulcrum on which one of the said levers
moves, and is a strong gudgeon fitted in the bed plate of the machine; this
gudgeon is flattened on each side to fit a slot in the lever and play is allowed in
the slot for raising and lowering the same; the screw bolt d is screwed into the
gudgeon, and the latter being in a fixed bearing the effect is to raise or lower tho
lever arm e and with it the roll b, according to the direction in which the screw is
turned; and in this way each end of the inovable roll can be adjusted to tho
samme plane as the roll in the fixed bearings and thus the two may be kept parallel
with each other, a condition necessary to their efficient working. At the opposite
or front end of each of the levers c pressure is applied by means of a screwed
spindle caused to press down upon the long end of the arin by means of a com-
pressed spring within a box f. By means of this spring and the screw the pressure
ending to force the rolls together can be regulated. A stop bolt Z fixes the
ninimum distance apart of the rolls. The ends of the long arms of the levers e
are provided with eccentrics h which when rotated to one extreme cause "gluts
or "tongues" to rise or project and touch the spindle ends, taking upon them
he pressure of the adjustable springs. If rotated to the other extreme the
ccentrics allow the glut pieces to fall thus relieving the arm of the spring pressure
nd allowing the rolls to move apart within certain limits.
"

page_text: The spindle is arrested by a collar resting on top of the spring box and the
spring is retained compressed. A pawl catch n holds the eccentric in position.
Having described the nature of the said invention and in what manner the same
is to be or may be carried into practical effect I would have it understood that
what I consider to be novel and original and therefore claim as the invention
secured to me under the Letters Patent first hereinabove in part recited is:-
1./ In an apparatus for reducing and treating cereals and cereal produce for the
manufacture of grits, semolina and flour so arranging a feeding device and an
aspirator in connection with a single set or a duplex set of crushing rolls as to
cause the lighter portions of matter eliminated by the aspirator from the cereal
produce on its way from the feeding device to the crushing rolls to be subdivided
into two portions one of which (the lighter) is removed and the other of which
(the heavier) is guided over the rolls and mixes with the main portion of the
cereal produce after it has passed between the rolls substantially as herein before
described and illustrated for the purposes set forth.
2./ Arranging the feed device of apparatus for reducing and treating cereals and
cereal produce in such a way that an excessive weight of material in the hopper
will cause the feed plate to open or yield a suitable distance and allow the feed to
pass substantially as described.
3. In a roller mill for reducing and treating cereals and cereal produce the
hereinabove described method of or arrangement for adjusting the movable roll so
that its axis shall be parallel with that of the fixed roll.
4. In a roller mill for reducing and treating cereals and cereal produce tho
means substantially as described and illustrated for applying and withdrawing
pressure to and from each of the two separate arms that carry the movable roll.
5. The combination of parts constituting the improved mill with one pair of
rolls, feeding device and aspirator all constructed arranged and operating as
described with reference to and shewn in Figs 1 and 2 of the drawings.
6. The improved duplex roller mill constructed arranged and operating as
described with reference to and shewn in Figs 3 and 4 of the drawings.
7. The use in combination for reducing and treating cereals and cereal produce
for the manufacture of grits semolina and flour of a disintegrator or decorticator
a feeding device and an aspirator or purifier of the kind referred to above, the
arrangement being such that the lighter portions of matter eliminated from the
main stream flowing to the disintegrator or decorticator are subdivided into two
portions one of which (the lighter) is removed, and the other of which (the
heavier) is guided over clear of the disintegrator or decorticator and mixes with
the main portion of the cereal produce after it has passed through the disintegrator
or decorticator substantially as hereinbefore described and illustrated for the
purpose set forth.
8. The combination of parts constituting the improved disintegrating or decorti
cating disc machine constructed arranged and operating as described with reference
to and shewn in Figs 5 and 6 of the drawings.
9. The combination of parts constituting the improved combined machine
constructed arranged and operated as described with reference to Figs 8 and 9.
In Witness whereof I the said William Henry Williamson have hereunto se
my hand and seal this thirteenth day of July in the year of our Lord on
thousand eight hundred and eighty three.
L