IMPROVEMENTS IN SUGAR CANE MILLS
Year: 1883

page_text: LETTERS PATENT to Francis Murray Rogers Consulting Engineer, Electrician,
and Patent Agent 21 Finsbury Pavement London EC for an Invention of
IMPROVEMENTS IN SUGAR CANE MILLS communicated to him from abroad by
Alfred Leblanc of Cienfuegos in the Island of Cuba
PROVISIONAL SPECIFICATION left by the said Francis Murray Rogers
at the Office of the Commissioners of Patents on the 23rd November 1883.
FRANCIS MURRAY ROGERS Consulting Engineer, Electrician and Patent Agent
21 Finsbury. 'Pavement London, EC. IMPROVEMENTS IN SUGAR CANE MILLS
[communicated to him from abroad by Alfred Leblanc of Cienfuegos in the Island
of Cuba]
-
This Invention relates to improvements in Sugar Cane Mills-3 rollers or rolls.
are so placed round a central driving roller as to subject the sugar cane to three
pressures. All the rollers are of the same size except the centre top roller which is
considerably larger than the others. The three upper rollers are placed exactly in
the same horizontal line, one bottom roller being placed vertically below the larger
main roller, in the same manner as in an iron rolling mill between slides The
cane is placed in the usual manner upon a shoot which is slanted so as to assist it
on its way, until caught by the rollers, which force it outwards to the first set of
knives, the second set of rollers then force it along to the second set of knives
until caught by the third roller which conveys it to the delivery shoot It will be
seen that the cane thus receives 3 distinct pressures, The Juice extracted by the
rollers saturates the bagass, and assists its passage over the knives, and along the
rollers. The injecting knives, or chest is placed only on the under side of the
bagass during its passage from grip, to grip. The knife being formed with two or
more chambers or compartments permitting and facilitating the injection of steam,
or other liquids, their construction being oblique; with inclined-openings, no liquid
liable to cause acidity can be retained. Another part of my invention consists of
a hand wheel, operating a special form of brake. This hand wheel which is keyed
to a shaft, operates by means of worm and wheel gear, and two pinions a wedged
D
יגמ..

page_text: shaped tightening bar, which forces the rolls together, or allows them to separate as
may be required-This hand wheel and shaft is so placed upon the mill, that the
attendant is able to slacken out or tighten up both ends. of any, or either of the rolls,
at the same time a perfectly parallel motion being obtained The power for working
the brake can be supplied by hand, steam, hydraulic or other suitable means, and
when power is employed, the cylinder, or engine producing it is placed at the side
of the mill or in any convenient position so that motion is transmitted by means of
a shaft & worm wheel pinion, and screw, to a wedge, or cam or other means for
tightening or slacking out the rolls
This brake can also be so constructed, as to suit existing sugar mills of the
ordinary type. The receiving shoot is constructed with a front plate to prevent
the canes from falling off, or being thrown over the main roller.
The discharging shoot is constructed with a curved plate to keep the bagass from
running back over the main roller.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filéd by.
the said Francis Murray Rogers in the Patent Office on the 21st May 1884.
FRANCIS MURRAY ROGERS, Consulting Engineer, Electrician, and Patent Agent
21 Finsbury Pavement London E.C. IMPROVEMENTS IN SUGAR CANE MILLS
A communication to him from abroad by Alfred Leblanc of Cienfuegos in the
Island of Cuba
This invention relates to Improvements in Sugar Cane Mills.
⚫ Three rollers, or rolls, are so placed round a central driving roller, as to subject
the sugar cane to three pressures
All the rollers are of the same size except the centre top roller which is
considerably larger than the others.
The three upper rollers are placed exactly in the same horizontal line, one bottom
roller being placed vertically below the larger main roller in the same manner, as
in an iron rolling mill between slides.
The cane is placed in the usual manner upon a shoot which is slanted so as to
assist it on its way, until caught by the rollers, which force it onwards to the first
set of knives, the second set of rollers then force it along to the second set of
knives, until caught by the third roller, which conveys it to the delivery shoot.
It will be seen that the cane thus receives three distinct pressures.
The juice
extracted by the rollers saturates the bagass, and assists its passage over the knives,
and along the rollers. The injecting knives, or chests, are placed only on the
underside of the bagass during its passage from grip, to grip, the knives, being
formed with two, or more chambers or compartments permitting and facilitating
the injection of steam or other liquid; their construction being oblique, with inclined
openings, no liquid liable to cause acidity can be retained.
Another part of my
invention consists of a hand wheel, operating a special form of brake.
This hand wheel which is keyed to a shaft, operates by means of worm and
wheel gear and two pinions a wedged shape tightening bar which forces the rolls
together, or allows them to separate as may be required. This band wheel, and
shaft is so placed upon the mill that the attendant is able to slacken out, or
tighten up both ends of either roll at the same time; a perfectly parallel motion
being obtained. The power for working the brake can be supplied by hand, steam,
hydraulic, or other suitable means, and when power is employed, the cylinder or
engine producing, it is placed at the side of the mill, or in any convenient position,
so that motion is transmitted by means of a shaft, and worm wheel, pinion, and
screw, to a wedge, or cam, or other means for tightening, or slacking out the rolls.
This brake can also be so constructed as to suit existing Sugar Mills of the ordinary
type.
The receiving shoot is constructed with a front plate to prevent the canes from
falling off, or being thrown over the main roller.
The discharging shoot is constructed with a curved plate, to keep the bagass
from running back over the main roller.
I will now proceed to explain the Invention more particularly by means of the
drawing: Fig 1 and Fig 2, are respectively a side elevation, and part sectional
plan, of the Improved Sugar Mill, and Fig 3 is a sectional elevation.
Three rollers I. O. M the relative position of which will be seen more clearly
by reference to Fig 3, are so placed round a central driving roller A, as to subject
the Sugar Cane to three separate pressures, all the rollers are the same size, except_
the central top roller A, which is considerably larger than the others. The three
upper rollers I. A. M are placed in the same horizontal line, one bottom roller O,
being placed vertically below the larger main roller A, in the same manner as in
an iron rolling mill between slides.

page_text: The cane is placed in the usual manner upon a shoot ✗, see Fig 1, and 3,
which is slanted so as to assist it on its way until caught by the rollers I. A. which
force it onwards to the first set of knives U, the second set of rollers then force it
along to the second set of knives H, until caught by the third roller M, which
conveys it to the delivery shoot T; it will be seen that the cane thus receives three
distinct pressures, and the juice extracted by the rollers saturates the bagass and
assists its passage over the knives, and along the rollers. The injecting knives, or
chests U, H, are placed only on the underside of the bagass during its passage from
grip, to grip.
Each knife has two, or more chambers, or compartments V, V permitting, and
facilitating the injection of steam, or other liquid, and as these chambers are oblique
and have openings inclining towards the rolls no liquid liable to cause acidity, can
be retained in them.
Another feature of my invention is a special form of brake operated by means
of a hand wheel in the following manner, see Figs 1, and 2. This hand wheel B,
which is keyed to a shaft C, operates by means of worm, and wheel gear D, and
two pinions E, F, a wedged shaped tightening bar G, which forces the rollers
together, or allows them to separate as may be required. This hand wheel shaft
is so placed upon the mill, that the attendant is able to tighten up both ends of
either roll at the same time; a perfectly parallel motion and pressure is obtained.
If desired the hand wheel can be dispensed with, and the brake can be operated
by steam, hydraulic, or other power, the cylinder, engine, or other means for
producing it being placed at the side of the mill in any convenient position, so that
motion is transmitted by means of a shaft, and worm wheel, pinion, and screw, to
a wedge, or cam, or other means for tightening, or slacking out, the rolls as
described.
This form of brake can also be applied to existing sugar mills, of the ordinary
type. The receiving shoot is constructed with a front plate K, see Fig 3 to prevent
the canes from falling off, or being thrown over the main roller A, the discharging
shoot has a curved plate L, to keep the bagass from running back over the main
roller. The juice expressed from the sugar cane, is received in a pure, and
unadulterated state in the trough Y, See Fig I.
I have now generally described the Invention, and Claim as follows.
1st The arrangement of rollers, substantially as described, and shewn.
2nd The position of Injecting. knives or chests on the underside only of the bagass,
the knife having two, or more chambers and the openings being oblique, so as
to prevent the retention of acid liquid, Substantially as described.
3rd The arrangement of brake by which both ends of the roller can be slackened,
or tightened up at the same time.
In Witness whereof I the said Francis Murray Rogers have hereunto set my
hand and seal this 10th day of May in the Year of our Lord 1884..