Improvements in Sugar-cane and similar Crushing Mills.
Year: 1893

page_text: Date of Application, 10th July, 1893
Complete Specification Left, 10th Apr., 1894-Accepted, 12th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Sugar-cane and similar Crushing Mills.
1, GEORGE FLETCHER, of Masson & Atlas Works, Litchurch, Derby, in the
County of Derby, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in mills for crushing sugar-canes and for
similar purposes.
Crushing mills of the most approved design have their head-stocks or standards
arranged with gaps for lifting out the rollers, the gaps referred to being provided
with filling up pieces or caps secured to the standards by means of substantial bolts
and nuts.
The bolts are preferably arranged to pass the full length or width of
the standards, those for the side roller caps being extended across the standard and
projecting through each cap and cominon to both. The top roller caps are
each secured by two or four bolts which are extended through the standards and
to the underside of the mill base plate.
Hitherto in mills having the top caps secured by four bolts the side caps have
been secured preferably by two through-bolts and in like manner when the top
caps have been provided with two bolts the side cap bolts have been four in number,
this arrangement being adopted in order that the side cap bolts may clear the top
cap bolts. From the foregoing it will be understood that there are usually six
cap bolts to each standard, viz. -four in the side caps and two in the top caps or
two in the side caps and four in the top caps.
The object of one part of my invention is to simplify the mill by reducing the
number of the cap bolts which have to be kept screwed up and adjusted, whereby
there is less chance of accidents through any negligence upon the part of the
attendants.
In carrying out this part of my invention I make the side cap bolts so that the
top cap bolts may pass through the centres of the same or as an alternative, the top
cap bolts may be made with a hole cut or forged in for the side cap bolts to pass
through.
Another part of my invention relates to a novel method of carrying the trash
turner.
Hitherto trash turners have either been supported by being secured direct to the
mill standards or they have been carried by brackets swinging on pivots fixed on
the standards or on the mill base plate. I propose to suspend the trash turner from
the top roller gudgeon, this gudgeon running exceedingly slowly so that there is
little or no friction set up by the revolving of the gudgeon in the brackets or hanger
which support or supports the weight and load upon the turner. In the case of the
trash turners supported upon the lower part of the standards or the base plates, the
arc described by the swinging of the turner plate is curved the opposite way to
the surface of the top roller and consequently any adjustment of the turner
alters the relative positions of the surfaces of the roller and turner, but in the case
of the turner suspended from the gudgeon, the turner swings from the centre of the
top roller and the arc described by its path must necessarily correspond with the
periphery of the roller and their relative positions cannot therefore be changed by
any adjustment of the trash turner.

page_text: Due provision is made for adjusting the turner whilst the mill is working so
that it is not necessary to stop the mill at any time the turner may require to
be set.
°
Dated the 10th day of July 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
.
COMPLETE SPECIFICATION.
Improvements in Sugar-cane and similar Crushing Mills.
I, GEORGE FLETCHER, of Masson & Atlas Works, Litchurch, Derby, in the
County of Derby, Engineer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
My invention relates to improvements in mills for crushing sugar-canes and for
similar purposes.
Crushing mills of the most approved design have their head-stocks or standards
arranged with gaps for lifting out the rollers, the gaps referred to being provided
with filling up pieces or caps secured to the standards by means of substantial bolts
and nuts. The bolts are preferably arranged to pass the full length or width of the
standards, those for the side roller caps being extended across the standard and
.projecting through each cap aud common to both. The top roller caps are each
secured by two or four bolts which are extended through the standards and to the
underside of the mill base plate.
Hitherto in mills having the top caps secured by four bolts the side caps have
been secured preferably by two through-bolts and in like manner when the top caps
have been provided with two bolts the side cap bolts have been four in number,
this arrangement being adopted in order that the side cap bolts may clear the
top cap bolts.
From the foregoing it will be understood that there are usually
six cap bolts to each standard, viz., four in the side caps and two in the top
caps or two in the side caps and four in the top caps.
The object of one part of my invention is to simplify the mill by reducing the
number of the cap bolts which have to be kept screwed up and adjusted, whereby
there is less chance of accidents through any negligence upon the part of the
attendants.
In carrying out this part of my invention I make the side cap bolts so that
the top cap bolts may pass through the centres of the same or as an alternative
the top cap bolts may be made with a hole cut or forged in for the side cap
bolts to pass through.
Another part of my invention relates to a novel method of carrying the trash
turner.
Hitherto trash turners have either been supported by being secured direct to
the mill standards or they have been carried by brackets swinging on pivots
fixed on the standards or on the mill base plate. I propose to suspend the
trash turner from the top roller-gudgeon, this gudgeon running exceedingly slowly
there is little or no friction set up by the revolving of the gudgeon in the
brackets or banger which support the weight and load upon the turner.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :-
Figure 1 is a view half in end elevation and half in cross section of a standard
of a mill for crushing sugar canes having the cap-bolts made according to my
invention:
Figure 2 is a horizontal section on the line 2-2 of Figure 1:

page_text: Figure 3 is an elevation of the top roller (with part of its gudgeon) of a
sugar-cane mill illustrating my new method of carrying the trash turner which is
shewn in section; and,
Figure 4 is a view shewing the top and bottom rollers and trash turner in end
elevation and the roller-gudgeons in cross section.
Referring first to Figures 1 and 2, a is one of the standards of the mill, 6 the top
cap, c, c the side caps, d the top roller, and e, e the bottom rollers (the said
rollers being indicated by dotted lines) all of which parts are of ordinary
construction.
ff are the side cap bolts each of which is made with a slot g as clearly
shewn in Figure 2 so that the top cap bolts h may pass through it. Or as will
be obvious the said slots may be provided in the top cap bolts and the side
cap bolts be constructed so as to pass through the same. The passages or slots
may be cut or forged in solid bolts or they may be formed by building up the
bolts of parts rivetted together or in any other convenient manner.
Referring now to Figures 3 and 4, i is the top roller, j, j the two bottom
rollers, the top roller gudgeon and, the bottom roller gudgeons, all of
ordinary construction, and m is the trash turner which I suspend from the top
roller gudgeon k by means of collars n, n having arms o, o passing through the
turner and secured therein by nuts p, p.
In the case of the trash turners supported in the ordinary manner upon the
lower part of the standards or the base plates, the arc described by the swinging
of the turner plate is curved the opposite way to the surface of the top roller
and consequently any adjustment of the turner alters the relative positions of
the surfaces of the roller and' turner, but in the case of a turner suspended from
the gudgeon according to my invention the turner swings from the centre of the
top roller and the arc described by its path must necessarily correspond with
the periphery of the roller and their relative positions cannot therefore be
changed by any adjustment of the trash turner.
Due provision is made for adjusting the turner whilst the mill is working so
that it is not necessary to stop the mill at any time the turner may require to
be set.
.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. A sugar-cane or similar crushing mill having either the side cap bolts or
the top cap bolts slotted so that the top cap bolts or side cap bolts respectively
can pass through the same substantially as, and for the purpose, hereinbefore
described and illustrated in Figures 1 and 2 of the accompanying drawing.
2. A sugar-cane or similar crushing mill having a trash turner suspended from
the top roller gudgeon for the purpose set forth and substantially as hereinbefore
described and illustrated in Figures 3 and 4 of the accompanying drawing.
Dated this 10th day of April 1994.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.