Improvements in Sugar Mills.
Year: 1897

page_text: Date of Application, 8th May, 1897
Complete Specification Left, 7th Feb., 1898-Accepted, 12th Mar., 1898
Improvements in Sugar Mills.
We, JAMES BINGHAM ALLIOTT and JOHN MCCLURE CALDWELL PATON, both of
Bloomsgrove Works, Nottingham, Engineers, do hereby declare the nature of
this invention to be as follows: --
This invention has reference to mills constructed with three horizontal rolls for
crushing sugar cane to extract juice therefrom.
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In
In the well known construction of which an example is illustrated in Fig. 1 of
the accompanying drawings the lower rolls A, B, are some distance apart.
and the cane, which is crushed first between the top roll C and
of the lower rolls and then between the top roll and the other lower roll in
passing from the one lower roll to the other has to traverse the distance between
the two rolls, so that a guide called a trash turner (D) is needed to ensure that the
cane shall neither adhere to the first lower roll nor escape from the mill altogether,
but shall pass on to be crushed between the top roll and the second lower roll.
consequence of the bolts E which hold the caps of the top roll bearings passing
between the top roll shaft C and the lower roll shafts A¹ B¹ the lower rolls have
had to be arranged at a considerable distance apart, thus necessitating the employ-
ment of a wide trash turner, which has been a serious objection, inasmuch as (1)
the trash turner, though necessary, often adds greatly to the power required to
drive the mill, (2) the wider it is the more it is liable to absorb power and give
trouble, and (3) being frequently subjected to great strains, it sometimes breaks
and causes other difficulties in working the mill.
Now this invention is designed to obviate or mitigate the foregoing
disadvantages.
Referring to Fig. 2 of the drawings, which is a view similar to
Fig. 1 of a mill embodying our improvements it will be seen that the lower
rolls A* B* are brought closer together, one of these being lower than the other,
the trash turner D* is made much narrower, the bolts E* that hold the caps of the
top roll bearings are so arranged that in the case of each cap only one of the bolts.
passes between the top roll shaft and a lower roll shaft while the other bolt has the
top roll shaft and the other lower roll shaft on the same side of it, both these shafts
being between the two bolts.
By this invention we are enabled, practically speaking, to arrange the lower
rolls as closely together as may be wished, to make the trash turner (which is still
desirable) as narrow as may be consistent with necessary strength, and to economize
driving power; at the same time lessening the strain upon the trash turner, and
its liability to breakdown.
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page_text: We, JAMES BINGHAM ALLIOTT .and JOHN MCCLURE CALDWELL PATON, both of
Bloomsgrove Works, Nottingham, Engineers, 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:-
This invention has reference to mills constructed with three horizontal rolls for
crushing sugar cane to extract juice therefrom.
In the well known construction of which an example is illustrated in Fig. 1. of
the drawings accompanying our Provisional Specification the lower rolls, A, B, are
some distance apart and the cane, which is crushed-first between the top roll C and
one of the lower rolls and then between the top roll and the other lower roll, in
passing from the one lower roll to the other has to traverse the distance 'between
the two rolls, so that a guide called a trash turner (D) is needed to ensure that the
cane shall neither adhere to the first lower roll nor escape from the mill altogether,
but shall pass on to be crushed between the top.roll and the second lower roll: In
consequence of the bolts E which hold the caps of the top roll 'bearings passing
between the top roll shaft C₁ and the lower roll shafts A'B', the lower rolls have
had to be arranged at a considerable distance apart, thus necessitating the employ-
ment of a wide trash turner, which 'has been a serious objection, inasmuch as (1)
the trash turner, though necessary, often adds greatly to the power required to
drive the mill, (2) the wider it is, the more it is liable to absorb power and give
trouble, and (3) being frequently subjected to great strains, it sometimes breaks
and causes other difficulties in working the mill.
Now this invention is designed to obviate or mitigate the foregoing
disadvantages.
Referring to the above mentioned drawings, Fig. 2 is a view similar to Fig. 1
of a mill embodying our improvements, and in which the cap of each of the top
roll bearings is held by two bolts. It will be seen that the lower rolls A* B* are
brought closer together, one of these (B) being lower than the other; the trash
turner D is made much narrower; the bolts E* that hold the caps of the top roll
bearings are so arranged that, in the case of each cap, only one of the bolts 'E,
namely that on the left of the figure, passes between the top röll shaft and a lower
roll shaft, while the other bolt has the top roll shaft and the other 'lower roll shaft
on the same side of it, both these shafts being between the two bolts.
-In-some-mills each of the caps of the top-roll bearings is held by more than two
bolts, for instance, four bolts are often used. In such cases the bolts which pass
through one end of the cap pass between the shaft of the top roll 0 and the shaft
of the lower roll A, whilst those bolts which pass through the other end of the
cap have the top roll shaft and the shaft of the other lower roll 'B on the same side
of them, both these shafts being between the 'latter bolts and those holding the
other end of the cap.
It is desirable,, and in many cases necessary, to arrange the bolts E securing the
top cap in such a way that they miss the bolts securing the caps of the lower rolls,
as otherwise these bolts would have to be very short, and would not obtain so good
a hold upon the mill cheek. If therefore the top cap.be secured by two bolts E* E*
passing through the centre, or nearly through the centre of the mill cheek, the
lower caps may be secured by four bolts arranged near the edges of the mill cheek,
or entirely outside it, so that they pass on each side of the bolt or bolts E* E*,
or if the top caps are secured by four bolts passing near the edges of the mill
cheek, or entirely outside it, the caps of the lower rolls may be secured each by

page_text: two bolts passing into or through the mill cheek near the centre of its width. This
arrangement for permitting the bolts securing the top cap and the bolts securing the
cap of the lower roll to pass one another is especially necessary on the side of the
mill cheek on which the bolt securing the top cap is outside the shaft of the lower
roll,
By this invention we are enabled, practically speaking, to arrange the lower
rolls as closely together as may be wished, to make the trash turner (which is still
desirable) as narrow as may be consistent with necessary strength, and to economize
driving power, at the same time lessening the strain upon the trash turner, and
its liability to breakdown.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:-
-
1. A sugar mill wherein three horizontal rolls are relatively arranged sub-
stautially as described and the bolts that hold the one end of each cap of the top
roll bearings pass between the top roll shaft and the shaft of one of the lower rolls,
and the bolts that hold the other ends of the top roll caps pass outside both the top
roll shaft and the other lower roll shaft, both these shafts being located between
the bolts that hold opposite ends of the said caps, as hereinbefore described.
2. In a sugar mill the construction and arrangement shewn in and described
with reference to Fig. 2 of the drawings.
Dated this 7th day of February 1898.
:
For the Applicants
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.