IMPROVEMENTS IN SUGAR CANE CRUSHING MILLS follows
Year: 1885

page_text: I, CHARLES WILLIAMS GUY of N° 25 Lily Avenue, Osborne Road in the City
and County of Newcastle upon Tyne, Engineer, do hereby declare the nature of
said invention for "IMPROVEMENTS IN SUGAR CANE CRUSHING MILLS
follows:-
to be as
This invention has reference to mills constructed with horizontal rollers for
expressing juice from sugar canes. Such mills have been heretofore made in
various forms. Thus, two rollers of equal diameter have been arranged with their
axes in the same vertical plane to give a preliminary squeeze to the cane which
has thence been conducted to another set of rollers-three in number-arranged
with their axes horizontal, two of these rollers having their axes in a common
horizontal plane and the third or upper roller having its axis in a vertical plane
situate between the other two rollers. According to a modification two pre-
liminary crushing rollers of equal diameter have been arranged with their
horizontal axes in two different vertical planes. With preliminary crushing
rollers of equal diameter having their axes in a common vertical plane, a difficulty
has been experienced in ensuring the feeding of the sugar cane which has had to
be presented to the rollers approximately horizontally, and with the alternatively
arranged preliminary crushing rollers of equal diameter it has been found that a
considerable per centage of the juice is re-absorbed by the cane. Then, as regards the
main crushing mill with the arrangement of three rollers as above referred to, it
has been found that the juice partly follows the crushed cane as it proceeds
between the first lower and the upper roller and that the juice leaves the cane only
in the opposite direction to that in which the crushed cane travels as it passes
between the second lower roller and the upper roller, although this has occurred to
a lesser extent when using preliminary crushing rollers such as already referred to.
Now, it is desirable in practice that the partly crushed cane should arrive between
the last of the set of three rollers very dry, to prevent re-absorbtion of the juice
by the megass, and to this end, according to my invention, I construct a horizontal
sugar cane mill with two upper rollers and one lower roller, the lower roller being
arranged beneath the first upper roller. The positions of the second upper roller
and of the lower roller in relation to the first upper roller are adjustable within
certain limits, the greatest angle at which they can be arranged being 90°. The
cane (whether partly crushed by passing through preliminary rollers or not) is

page_text: squeezed between the first upper roller and the lower roller, juice flowing down
in front of the lower roller; thence the cane is guided upward by a dumb
returner and passes between the two upper rollers, the juice here flowing down-
ward whilst the megass passes out from between the two rollers and over the
second upper roller.
By reducing the angle of the lower crushing roller, the flow of juice from
between it and the first upper roller may be facilitated, and by reducing the angle
of the second upper crushing roller, the delivery of magass or finally crushed cane
over that roller may be facilitated. By reducing the angles of the rollers, more-
over, the dumb returner can be reduced in breadth, thus facilitating the passage of
the partly crushed canes.
The upper rollers are held together by through bolts, and elastic or yielding
material or device to take the strain being provided between two caps or covers
traversed by the said bolts. Thus, the second upper crushing roller is enabled to
yield to any excess of pressure arising from over-feeding or otherwise, thus
obviating breakage of or injury to the mill from such causes.
The inner closing caps or covers whose thrust is against the ends of the side
frames or cheeks, admit of the final pressure roller being allowed to work free from
contact with the first upper roller so that the mill may rotate without any of the
rollers pressing against one another. For regulating the distance between the two
upper crushing rollers, liners are provided between the inner caps and the ends of
the side frames or cheeks.
When using preliminary crushing rollers according to my invention, I make the
upper roller smaller in diameter than the lower one in order to facilitate the
feeding of canes to be crushed as also the flow of juice in the opposite direction to
that in which the partly crushed cane travels, the preliminary crushing rollers may
be arranged with their axes in a common vertical plane or at an angle, the axis of
the upper roller in this case being in a vertical plane nearer the cane carrier than
that in which the axis of the lower preliminary crushing roller is situated.
Dated thin 95th of T TOOK
W. LLOYD WISE,
Applicant's Agent,
46, Lincoln's Inn Fields, London, W.C.

page_text: Improvements in Sugar Cane Crushing Mills.
I, CHARLES WILLIAMS GUY, formerly of N° 25 Lily Avenue, Osborne Road, in the
City and County of Newcastle-upon-Tyne, but now of 17 Belsize Crescent, Belsize
Park, in the County of Middlesex, Engineer, 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:-
With
This invention has reference to mills constructed with horizontal rollers or rolls
for expressing juice from sugar canes. Such mills have heretofore been made in
various forms. Thus, two rollers or rolls of equal diameter have been arranged
with their axes in the same vertical plane to give a preliminary squeeze to the cane,
which has thence been conducted to another set of rollers or rolls three in number-
arranged with their axes horizontal, two of these rollers or rolls having their axes
in a common horizontal plane and the third or upper roller or roll having its axis
in a vertical plane situate between the other two rollers or rolls. According to a
modification two preliminary crushing rollers or rolls of equal diameter have been
arranged with their horizontal axes in two different vertical planes.
preliminary crushing rollers or rolls of equal diameter having their axes in a common
vertical plane a difficulty has been experienced in ensuring the feeding of the sugar
cane which has had to be presented to the rollers or rolls approximately horizontally
and with the alternatively arranged preliminary crushing rollers or rolls of equal
diameter it has been found that a considerable per-centage of the juice is re-absorbed
by the cane. Then as regards the main crushing mill with the arrangement of
three rollers or rolls as above referred to it has been found that the juice partly
follows the crushed cane as it proceeds between the first lower and the upper roller
or roll and that the juice leaves the cane only in the opposite direction to that in
which the crushed cane travels as it passes between the second lower roller or roll
and the upper roller or roll although this has occured to a lesser extent when
using preliminary crushing rollers or rolls such as already referred to.
desirable in practice that the partly crushed cane should arrive between the last of
the set of three rollers or rolls very dry to prevent re-absorbtion of the juice by the
megass, and to this end, according to my invention, I construct a horizontal sugar
cane mill with two upper rollers or rolls and one lower roller or roll the lower
roller or roll being arranged beneath the first upper roller or roll. The positions of
the second upper roller or roll and of the lower roller or roll in relation to the first
upper roller or roll are adjustable within certain limits, the greatest angle at which
they can be arranged being 90°. The caue (whether partly crushed by passing
through preliminary rollers or rolls or not) is squeezed between the first upper
roller or roll and the lower roller or roll juice flowing down in front of the lower
roller or roll, thence the cane is guided upward by a dumb returner and passes
between the two upper rollers or rolls the juice here flowing downward whilst the
megass passes out from between the two rollers or rolls and on the second upper
roller or roll.
Now it is
By reducing the angle of the lower crushing roller or roll the flow of juice from
between it and the first upper roller or roll may be facilitated and by reducing

page_text: the angle of the second upper crushing roller or roll the delivery of megass or finally
crushed cane over that roller or roll may be facilitated. By reducing the angles of
the rollers or rolls moreover the dumb returner can be reduced in breadth thus
facilitating the passage of the partly crushed canes.
The upper rollers or rolls are held together by through bolts an elastic yielding
material or device to take the strain being provided between two caps or covers
traversed by the said bolts. Thus the second upper crushing roller or roll is
enabled to yield to any excess of pressure arising from overfeeding or otherwise
thus obviating breakage of or injury to the mill from such causes.
The inner closing caps or covers whose thrust is against the ends of the side
frames or cheeks, admit of the final pressure roller or roll being allowed to work
free from contact with the first upper roller or roll so that the mill may rotate
without any of the rollers or rolls pressing against one another. For regulating the
distance between the two upper crushing rollers or rolls liners are provided between
the inner caps and the ends of the side frames or cheeks.
When using preliminary crushing rollers or rolls according to my invention I
make the upper roller or roll smaller in diameter than the lower one in order to
facilitate the feeding of canes to be crushed as also the flow of juice in the opposite
direction to that in which the partly crushed cane travels. The preliminary
crushing rollers or rolls may be arranged with their axes in a common vertical
plane or at an angle, the axis of the upper roller or roll in this case being in a
vertical plane nearer the cane than that in which the axis of the lower preliminary
crushing roller or roll is situated.
Referring to the accompanying drawing which shews a combined preliminary
and main crushing mill, A. B and C are the rollers or rolls of the main mill
and P, O, the rollers or rolls of the preliminary mill. In the latter mill the upper
roller or roll is smaller in diameter than the lower, and the axes Z Z of the two are
shewn in the same vertical plane. It is, however, not essential that they should
occupy this exact position. The axis of the upper roller or roll may be in a vertical
plane nearer the side at which the feeding of the sugar cane takes place and the
limits of variation towards that side are marked approximately in the drawing by
the angle Y Z X. The object to be attained is to cause the expressed juice to flow
backwards and not to travel with the cane, for if it does the woody fibre, as soon
as it is relieved from the grip of the rollers or rolls, re-absorbs a portion of the
juice. S is a wedge for setting up the lower roller or roll. Ta screw for operating
the wedge. R R are through bolts, and U U₁ the bearings. In the main crushing
mill the three horizontal rollers or rolls A B and C are so arranged that A runs in
contact or nearly in contact with B and C, and the said lines of contact or
approximate contact are the limits or within the limits of an arc of 90 degrees,
formed by drawing vertical and horizontal lines through the centre of the roller or
roll A. The angle E E E shews approximately the limiting position of the rollers
or rolls in one direction, and the angle D E D² the limiting position in the other
direction. Here again the object sought is to attain a relative position of the
rollers or rolls which will ensure the expressed juice flowing away from the cane.
The bearings N N of the upper rollers or rolls are held in relative position by the
bolts K K. At the back of the bearings N are the inner closing caps G between
which and the outer closing cap H is a layer of elastic or yielding material I (or it
may be an equivalent device) which will give way and relieve the pressure when
it becomes excessive. The inner closing caps G (which are adjustable by liners G
being placed between them and the ends of the side frames or cheeks) admit of the
roller or roll B running out of contact with the roller or roll A (and may also be
applied at the opposite ends of the side frames or cheeks). The bearing N¹ and
lower roller or roll C are adjustable by the wedge L and screw M. D, R is a dumb
returner or "trash turner" and V the framings. F and V are side cheeks or
frames of the main and preliminary mills; they are connected by flanges at W.
QQ indicate in dotted lines the position of cane feeding shoots to the said mills.
Jis a closing cap for the roller or roll A,

page_text: 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. In a main crushing mill having three horizontal rollers or rolls arranging the
said rollers or rolls in such wise that one runs in contact or almost in contact with
the other two, and that the said lines of contact or approximate contact are the
limits or within the limits of an arc of 90 degrees formed by drawing vertical and
horizontal lines through the centre of the first roller or roll substantially as
described.
2. A main crushing mill constructed arranged and operating substantially as
described with reference to the drawings.
3. In a preliminary crushing mill having two horizontal rollers or rolls the use of
an upper roller or roll smaller in diameter than the lower roller or roll and
arranged with its axis in the same vertical plane as that of the lower roller or roll
or in a vertical plane nearer to the point at which the cane is fed substantially as
described.
4. The combination of a main crushing mill having three horizontal rollers or
rolls so arranged that one runs in contact or nearly in contact with the other two,
the said lines of contact or approximate contact being the limits or within the limits
of an arc of 90 degrees formed by drawing vertical and horizontal lines through
the centre of the first roller or roll and a preliminary crushing mill having two
horizontal rollers or rolls of unequal size substantially as described.
5. The combined main and preliminary crushing mill constructed arranged and
operating substantially as described with reference to the drawings.
Dated Gifs fourth day of November 10.
C. W. GUY.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.