Year: 1888

page_text: 1, HARRY VAUGHAN RUDSTON READ, of Broadway Chambers, Westminster, in the
County of Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object to provide against accidents that often happen with
sugar cane mills causing serious fractures when a hard object that cannot be crushed
finds its way between the rollers. For this purpose, instead of the abutments for the
bearings in which the journals of the rollers work being rigid and unyielding, they are
fitted either to swing or to slide in opposition to springs which can be adjusted by
screws to withstand more or less strain. Usually in a three roller mill it suffices to
provide this yielding support to the bearings of the journals of the lower roll on the
food side of the mill, and for this purpose these bearings are formed in two arms
rigidly fixed to a rocking shaft which extends across the mill so that both arms move
together compressing springs which are held in forked ties secured to the middle of
the mill frame. Both the lower rollers may have their bearings supported in this
manner; or either or both of them may have the bushes of their bearings fitted to
slide back in gabs of the framing, these gabs being covered by caps bolted on with
compressible springs interposed betweon the caps and the sliding bushes. Instead of
or along with such spring bearings for the lower roller or rollers, the upper roller
may have a spring inserted between the upper brass of each bearing and a cap bolted
on to the top of tho frame. When this provision is made for existing mills, it is only
necessary to raise each cap on a pair of pedestals sufficiently to allow for the depth of
the spring introduced below it. When the mill has five rollers, the uppermost of the
feeding pair has its bearings provided with springs in the manner last described, and
the bearings for the other three rollers or some of them may have springs applied as
in a three roller mill. When the two lower rollers are provided with spring bearings
a convenient arrangement is as follows. The bearings for one of the rollers are
077

page_text: formed in arms of a transverse rocking shaft as first described; the bushes of the other
roller are fitted to slide in gabs of the framing and to butt against levers from which
side rods extend horizontally to a crosshead, between which and the rocking arms of
the first roller suitable springs are interposed. These springs are thus made to serve
for the bearings of both the lower rollers.
5
ABEL & IMRAY,
Agents for the Applicant.
I, HARRY VAUGHAN RUDSTON READ, of Broadway Chambers, Westminster, 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 :-
This invention has for its object to provide against accidents that often happen with
sugar cane mills, causing serious fractures when a hard object that cannot be crushed
finds its way between the rollers.
For this purpose, instead of the abutments for the bearings in which the journals
of the rollers work being rigid and unyielding, they are fitted either to swing or to
slide in opposition to springs which can be adjusted by screws to withstand more or
less strain. Usually, in a three roller mill, it suffices to provide this yielding support
to the bearings of the journals of the lower roll on the food side of the mill, and for
this purpose these bearings are formed in two arms rigidly fixed to a rocking shaft
which extends across the mill so that both arms move together compressing springs
which are held in forked ties secured to the middle of the mill frame. Both the lower
rollers may have their bearings supported in this manner; or either or both of them
may have the bushes of their bearings fitted to slide back in gabs of the framing, these
gabs being covered by caps bolted on with compressible springs interposed between
the caps and the sliding bushes. Instead of or along with such spring bearings for
the lower roller or rollers the upper roller may have a spring inserted between the
upper brass of each bearing and a cap bolted on the top of the frame. When this
provision is made for existing mills it is only necessary to raise each cap on a pair of
pedestals sufficiently to allow for the depth of the spring introduced below it. When
the mill has five rollers, the uppermost of the feeding pair has its bearings provided
with springs in the manner last described, and the bearings for the other three rollers
or some of them may have springs applied as in a three roller mill. When the two
lower rollers are provided with spring bearings a convenient arrangement is as
follows.
The bearings for one of the rollers are formed in arms of a transverse rocking shaft
ne first described. the bushes at the

page_text: framing and to butt against levers from which side rods extend horizontally to a
crosshead between which and the rocking arms of the first roller suitable springs
are interposed. These springs are thus made to serve for the boarings of both the
lower rolls.
Fig. 1 of the accompanying drawings is a side view and Fig. 2 is an end view of a
three roller mill with springs applied according to this invention to one of the lower
rolls; Fig. 3 is a part sectional plan. The bearings of the roller A are formed in
arms B which are fixed to a transverse rocking shaft C, and against these arms abut
springs D which are held in the forked ties E and can be adjusted by setting
screws F.
Fig. 4 is a side view and Fig. 6 an end view partly in section shewing springs
applied to the bearings of all the rollers, those bearings being fitted to slide in gabs of
the framing and held by crossheads pressing against the sliding bushes. For the
lower rollers the crossheads G have each abutting against them a pair of springs H
adjustable by nuts. The crossheads K for the bushes of the upper roller may have
similar springs H as shown in Fig. 5, or as shewn in Figs. 4 and 6, the bolts L for the
crossheads of the upper roller may be extended down through the frame and provided
with springs M under the base of the mill.
Fig. 7 shows both the lower rollers of a three roller mill provided with bearings in
arms B of transverse rocking shafts C, these arms being pressed by springs D'held
in forked ties E.
Fig. 8 is a side view of a five roller mill with springs applied to the bearings of the
upper feed roller N and to those of the two lowest rollers. The springs for the bearings
of N are held under crossheads adjustable by nuts. For the bearings of the lowest
rollers those of the one A are arranged as described with reference to Fig. 1, but the
fork ties E, instead of being attached to fixed pins of the frame, are attached to one
end of a lever P which transmits the strain to the bushes of the other of the two
lowest rollers.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Applying to the bearings of one or more of the rollers of a sugar cane mill
adjustable springs as and for the purpose set forth.
2. For the bearings of one or both of the lower rollers A, the combination of
arms B of a transverse rocking shaft C with springs D and fork ties E, substantially as
described with reforence to Figs. 1, 2, and 3, and with reference to Fig. 7.
3. In combination with sliding bushes for the roller bearings, the crossheads G, K
and springs H or M, substantially as described with reference to Figs. 4, 5, and 6.
4. For the bearings of both the lower rollers the combination of the arms B of
transverse shaft C, springs D and fork ties E with the lever P, substantially as
described with reference to Fig. 8.