Improvements in Sugar Cane Mills.
Year: 1889

page_text: Date of Application, 23rd July, 1889-Accepted, 7th Sept., 1889
COMPLETE SPECIFICATION.
Improvements in Sugar Cane Mills.
I, JOSEPH ELEUTERIO HATTON, of Calle Concha, Fundicion, No. 1, Colon, Island
of Cuba, Gentleman, 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:—
My Invention relates to roller cane mills, and to that class of such mills which
employ two lower rollers and one upper roller arranged to act on both the lowor
rollers, producing two crushing actions.
"
In the common mill, the two lower rollers are placed in the same horizontal
plane, so that the two crushing surfaces are on the same level, and between these two
"
knife
lower rollers is placed a bridge or what is commonly termed a
to shift the
cane after the first pressure to the second lower roller to receive the second
pressure.
The partially crushed cane as it comes in contact with this bridge or knife is
deflected upward in contact with the upper roller on which it exerts excessive friction
causing loss of power; and owing to the retarding action of the rigid and immov-
able bridge or knife, clogging or choking is frequent, which soon results in the
breaking of the main frame or other parts of the mill, unless great care is exercised
by the attendant. The object of my invention is to obviate the use of the bridge or
knife and the objections incident to its use, and this I accomplish by such arrange-
ment of the rollers as that the second crushing surface shall be on a lower level than
the first, so that the partially crushed cane is shifted by the movement of the lower-
most roller on the surface of which the cano strikes on entering the space between the
threo rollers.
The second object of my invention is to relieve the main frame of the mill, the
"check frames as they are termed, from pressuro and danger of breakage, and to
this end my invention consists of what I terin separate resistanco frames or yokes in
which the rollers have their bearings.
My invention also consists of novel means of adjusting the bearing blocks of the
rollers; and also in the construction, arrangement and combination of parts, all as
hereinafter described and claimed.
Reference is to be had to the accompanying drawings forming
a part of this
specification, in which similar letters of referenco indicate corresponding parts in all
the figures.
Figure 1 is a front elevation of my improved cane mill.
Figure 2 is an end view of the same.
Figure 3 is a sectional clovation to show the relative arrangement of the
rollers.
Figure 4 is an enlarged separate view of one of the yokes or resistance frames.
Figures 5 and 6 are respective enlarged detailed side and front views of one
of the bearings showing the preferred means of adjusting the outer bearing block;
and
Figure 7 is a side view of one of the cheek frames.
The check frames A A, are merely supports for the rollers B, C, D, and are each
formed with three open journal spaces A1, A2, A3, arranged obliquely to each other
like the points of a triangle, the space A¹ being parallel with the base, the
spaces A, A, being at opposite angles thereto as shown clearly in Figure 7, one pro-
jecting upward the other downward from the horizontal plane of the space A'. The main
top roller B, stands immediately above the lower or bagasse roller D, and the front or
cane roller C, is so arranged that its axis is on a lino with the meeting surfaces of
the rollers B, C. By this arrangement, the second bite or crushing action at a is on
a lower lovel than the first crushing action or bite at b, so that the partially crushed

page_text: cane drops naturally upon the surface of the lower roller and is carried by the move-
ment thereof directly between the rollers B, D, without the employment of a bridge
or knife as used in the common three-roller mills. Another object of this arrange-
ment of the rollers is that the strain on the rollers is distributed in oblique direction to
the resistance and each roller receives its due share only.
DE represent the resistance frames or yokes to take the strain of the rollers and
to relieve the main cheek frames. I prefer to use four of theso yokes, one on each
side of each of the cheek frames although only one on each cheek need be used, if
made sufficiently strong. The resistance yokes are each formed with journal
spaces E¹, E, E³, arranged obliquely to each other the same as the open journal
spaces A', A2, A3, in the cheek frames, so that the journal spaces of the yokes exactly
conincide with the spaces of the check frames, when applied thereto. When so
applied the yokes are held in place by set-screws or bolts c, and studs c formed on the
cheek piece which enter small apertures c³ in the yokes. The journal blocks F, F¹
for the shafts or gudgeons of the crushing rollers are placed in the bearing spaces of
the cheek pieces and resistance yokes as shown clearly in Figure 2, and upon each
block F, is placed a block or plate F2 for adjusting the journal blocks and rollers.
The plates may be held by bolts and nuts G, G¹, by keys H H, or by any other
suitable means. These plates have no connection with the cheek pieces, only with
the resistance yokes, the bolts G being welded to the arms of the yokes, but the bolts
may be separate to be screwed into screw taps made in the arms of the yokes.
By this arrangement it will be seen that the said resistance yokes or frames tako
the entire strain of the rollers and that the cheek piecos act as mere supports and not
as working elements of the machine, and in case any of the resistance frames or yokes
are broken, a new one can be easily and cheaply put in place.
In place of the bolts G and nuts thereon, for retaining the bearing blocks and
adjusting them, I may form the extremities of the resistance frames or yokes with
forks d slotted at d¹, to receive the wedge shaped keys H, shown clearly in Figures 5
and 6. These wedge are adjusted by a bolt J in the clevis J¹, attached to the bar J
which bolt is formed with a cone-shaped head ;, which acts against the adjacent ends
of the wedges and when screwed down serves to spread them with the effect of forcing
inward the bearing blocks, and thus effecting the adjustment of the rollers. By
turning outward the bolt J the keys may be tapped back to permit the spreading of
the rollers.
The top roller is provided at each end with gear wheels M, N, the former meshing
with a gear wheel M¹, on the front cane roller C, while the roller N meshes with the
gear wheel N', on the lower bagasse roller D, so that motion may be imparted to all
the rollers by a single power shaft O, as shown clearly in Figure 1.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is―
1. A three-roll sugar cane mill having its rollers so placed relatively to each
other, that the bite between the top and the lower bagasse roller is on a lower level
than the bite between the top and front cane roller, substantially as described.
2. The main cheek frames in combination with the rollers and the resistance yokes
applied to the chook frames to retain the journals or bearings of the rollers,
substantially as described.
3. A cheek frame A constructed to form open journal spaces obliquely arranged,
substantially as described.
4. The resistance yoke formed with journal spaces, in combination with means for
retaining the journals and shafts or gudgeons of the rollers, substantially as
described.
5. The cheek frames having oblique journal spaces and the rollers in combination
with the resistance yokes having oblique journal spaces applied to the cheek frames
and with means for rotaining the journal blocks and shafts or gudgeons of the rollers,
substantially as described.

page_text: 6. The resistance yokes formed with slots at the ends of its arms, in combination
with wedge shaped keys and an interposed adjusting bolt provided with a conc-
shaped head, substantially as described.
T13.11.
CT1
1000
J. E. HATTON.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.