Improvements in Sugar-cane Mills.
Year: 1892

page_text: Date of Application, 3rd June, 1892
Complete Specification Left, 1st Mar., 1893-Accepted, 15th Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Sugar-cane Mills.
We, JOHN MCNEIL, and HUGH WALLACE AITKEN of the firm of Aitken
McNeil and Company of the Colonial Iron Works, Helen Street, Govan, in the
County of Lanark, North Britain, Engineers, do hereby declare the nature of this
invention to be as follows, that is to say :-
Our said invention has for its object to improve the construction of parts of
sugar-cane mills.
One part of our invention consists of arrangements for combining a preparatory
pair of rolls with the three rolls of a common type mill. We provide supplemen-
tary cheeks or side frames to hold the preparatory pair of rolls in positions such that
the canes may pass between them and in a downwardly inclined direction towards
the first bite of the ordinary rolls. These supplementary cheeks rest partly on
lateral pedestals to which they are bolted and which are themselves bolted to a
transverse bed plate, and the cheeks also rest partly on and are bolted to the upper.
and outer parts of the housings or side frames of the ordinary three rolls. The
supplementary cheeks are formed with inclined recesses or slots to receive the
bearings of the preparatory rolls, the bearing of the higher roll being adjustable by
means of screws, whilst covers with overgripping ends retain the bearings in the
recesses and assist in binding the parts together.
In some cases in which from moderateness of size or other circumstances it may
be convenient, the main housings may be made with extensions including the
bearings for the pair of preparatory rolls.
Another part of our invention relates to the dumb returner which is placed
between the two lowermost of the three ordinary rolls, and has for its object to
facilitate the placing and removal of this part of the machine. The dumb returner
is made of cast steel with its ends fitting accurately between the main housings, and
it is supported in its place by one or two wrought iron bars or beams extending
through slots in the housings through which slots they can be withdrawn when
required.
The supporting bars extend under the top of the dumb returner, but when
two bars are used the dumb returner is made with a vertical web extending
down between the bars, and at the lower part of the vertical web there are
horizontal webs which are under the bars and through which pins are screwed to
clamp the dumb returner to the supporting bars. When one supporting bar is used
the dumb returner is made either with a vertical web at one side and a horizontal
web at the bottom of it through which latter the holding pins are screwed, or with
two vertical webs connected by bottom cross bars at intervals for the holding pins
to be screwed through up against the supporting bar which is between the vertical
webs.
T
1045
EDMUND HUNT,
Applicants' Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Sugar-cane Mills.
We, JOHN MCNEIL, and HUGH WALLACE AITKEN, of the firm of Aitken
McNeil and Company, of the Colonial Iron Works, Helen Street, Govan, in the
County of Lanark, North Britain, 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, that is to say :-
Our said invention has for its object to improve the construction of parts of
sugar-cane mills.
One part of our invention consists of arrangements for combining a preparatory
pair of rolls with the three rolls of a common type of mill. These preparatory
pair of rolls are carried by supplementary cheeks resting partly on lateral pedestals
to which they are bolted, and which are themselves bolted to a transverse bed plate.
The supplementary cheeks rest on and are bolted to the ordinary mill cheeks and
are formed with inclined recesses or slots to receive the bearings of the preparatory
rolls. If desired the preparatory rolls may be carried in extensions of the cheeks
or side frames of the ordinary three rolls.
Another part of our invention relates to the dumb returner which is placed
between the two lowermost of the three ordinary rolls, and has for its object to
facilitate the placing and removal of this part of the machine. The dumb returner
is made with its ends fitting accurately between the main housings and it is
supported in its place by one or two wrought iron bars extending through slots in
the housings through which slots they can be withdrawn. The dumb returner is
clamped to the supporting bars by pins.
And in order that our said invention and the manner of performing the same
may be properly understood we hereunto append two sheets of explanatory drawings
to be hereinafter referred to and showing various modifications of our improvements
in sugar-cane mills.
Figures 1, 2, 3, and, 4, on Sheet, 1, of the drawings are side elevations of
sugar-cane mills as made with the improvements referred to as the first part of our
invention.
Figures, 5, and, 6, on Sheet, 2, of the drawings are vertical sections as at right
angles to each other of as much of a sugar-cane mill as is considered necessary to
show the application of one modification of our improved dumb returner.
Figures, 7, and, 8, are similar views showing a second modification of our
improved dumb returner.
Figures, 9, and, 10, are similar views showing a third modification.
Figure, 11, being a section as taken through the supporting bar and the dumb
returner.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
As shown in Figures, 1, and, 2, of the drawings, we provide supplementary cheeks
or side frames, A, to hold the preparatory pair of rolls, B, in position such that the
canes may pass between them, and in a downwardly inclined direction towards the
first bite of the ordinary rolls, C. These supplementary cheeks, A, rest partly
on lateral pedestals, D, to which they are bolted, and which are themselves
bolted, as shown in Figure, 1, to a separate transverse bed plate, E, placed at
the end of the mill, or are bolted, as shown in Figure 2, to an extension of the
main bed plate, F. The supplementary cheeks, A, also rest partly on, and are
bolted to the upper lateral parts of the housings or side frames, G, of the
ordinary three rolls, C. The supplementary cheeks, A, are formed with inclined
recesses or slots, A', to receive the bearings, B', and, B2, of the preparatory
rolls, B, the bearing, B', of the higher roll being adjustable by means of a
screw, B³, as shown in Figure, 1, whilst covers, B*, with overgripping ends

page_text: retain the bearings in the recesses and assist in binding the parts together. In
Figure, 1, the arrangement of parts comprising the first part of our invention is
such as can be easily applied to existing mills.
In some cases, as shown in Figures, 3, and, 4, in which from moderateness of
size, or other circumstances it may be convenient, the main housings or cheeks, G,
are made with extensions, G¹, including the bearings, B, and, B2, for the pair of
preparatory rolls, B. In Figure, 3, the upper roll is adjustable as regards its
distance from the lower roll by wedges, H, which act one on each side of each of
the extensions, G¹, of the mill cheeks, G, between the bottoms of the bearings, B¹,
and projections, H', formed on the mill cheeks, the ends of the wedges, H, being
adjustable by means of nuts, H³.
The dumb returner, K, Figures, 5, to, 11, is made of cast steel with its ends
fitting accurately between the main housings, G, and it, as shown, in Figure, 5,
is supported in its place by two wrought iron bars or beams, L, extending
through slots, M, in the housings through which slots they can be withdrawn
when required. The supporting bars or beams, L, extend under the top of the
dumb returner, K, which is made with a vertical web, K', extending down between
the bars, and at the lower part of the vertical web there are horizontal webs, K³,
which are under the bars and through which pins, K³, are screwed to clamp the
dumb returner to the supporting bars. Bolts, L', are provided to bind the
bars, L, together. In some cases we prefer to use one supporting bar, L, and
the dumb returner, K, is made either with a vertical web, K', at one side and
a horizontal web, K, at the bottom of it, as shown in Figures, 7, and, 8,
through which latter the clamping pins, K³, are screwed, or as shown in Figures, 9,
10, and, 11, with two vertical webs, K', connected by bottom cross bars, K*, formed
at intervals in the vertical webs for the holding or clamping pins, K³ to be
screwed through up against the supporting bar which is between the vertical webs.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is ==
1-The improved construction and arrangement of parts of sugar-cane mills,
substantially as herein before described and as shown in Figure, 1, of the accom-
panying drawings.
2-The improved construction and arrangement of parts of sugar-cane mills,
substantially as hereinbefore described and as shown in Figure, 2, of the accom-
panying drawings.
3-The improved construction and arrangement of parts of sugar-cane mills,
substantially as herein before described and as shown in Figure, 3, of the accom-
panying drawings.
4-The improved construction and arrangement of parts of sugar-cane mills,
substantially as herein before described and as shown in Figure, 4, of the accom-
panying drawings.
5-In a sugar-cane mill, a dumb returner having its ends fitting accurately
between the main housings or cheeks, and supported by one or more bars with-
drawable through slots in the housings, substantially as hereinbefore described with
reference to Figures, 5, to, 11, of the accompanying drawings.
Dated this Twenty-eighth day of February 1893.
EDMUND HUNT,
Applicants' Agent.