IMPROVED APPARATUS CHIEFLY DESIGNED FOR REGULATING THE PRESSURE OF CRUSHING ROLLERS IN SUGAR MILLS
Year: 1884

page_text: I, WILLIAM ROBERT LAKE, of the firm of Haseltine Lake & Co, Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the
nature of my Invention for "IMPROVED APPARATUS CHIEFLY DESIGNED FOR
REGULATING THE PRESSURE OF CRUSHING ROLLERS IN SUGAR MILLS" and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This Invention relates to improvements in the pressure regulator described in
the Specification of United States Patent, N° 128,235, dated June 25th 1872,
wherein a plunger is arranged within a chamber, the said plunger being connected
with the bearing block or cap of one of the rollers of a series, and the chamber
connected with stand-pipes, into which weighted plungers press upon the liquid
contained in the above described cylinder and stand pipes and press downwardly
upon the bearing block or cap and roller with a yielding pressure depending upon
the difference of area between the pressure cylinder and stand-pipes, and upon the
weight applied to the stand-pipe plungers.
The object of this Invention is to provide means for regulating or relieving the
pressure from the bearings of heavy rollers in sugar mills, to admit of their
uninterrupted action without causing undue strain to be brought upon them when
they are over fed or become choked by the pressure of unyielding substances
between them.
The present improvements consist partly in the peculiar construction and
arrangement of a stand-pipe or accumulator, provided with guide-rods secured to
its upper end and a piston within the accumulator acted upon in a direct manner
by detachable weights as will be hereinafter described.
The improvements further partly consists in the combination, with the accumulator
or stand pipe of a hydraulic regulator, of an oil or liquid reservoir connected to
the supply pipe of said accumulator, and a pump arranged between the reservoir
and accumulator to fill the latter with any required pressure of liquid or to reduce
Prine 71
1

page_text: the pressure therein or entirely exhaust the liquid from said accumulator, as will
hereinafter appear.
In the accompanying Drawing
Figure 1 is a view in elevation of the improved apparatus in connection with an
ordinary cane-mill.
Figure 2 is a top view of the cross-head of the accumulator-plunger.
Figure 3 is a front view of the detachable weights and frame.
Figure 4 is a cross section on the line x x Figure 1 and
Figures 5 and 6 are sectional views of the accumulator head and plunger.
To clearly illustrate the nature of my Invention the same is shown, as above 1
stated in connection with a cane-mill, which in this instance, is provided with a
train of three rollers A A¹ A³, arranged in triangular relation to each other, the
roll A being arranged above and between the rollers A¹ A2, and wherein said
rollers are supported by housings B in the usual manner. The upper roller A is
provided with vertically-moving bearing blocks or caps C which are held in place
upon the upper side of the bearings at opposite ends of the roller, and are connected
by housing bolts D D' arranged vertically and extending below the bed plate E
of the frame or housings. The bolts D D are connected at their lower ends, by a
cross-head F, with a cylindrical plunger G accurately turned to fit an opening in
the head H of a hydraulic cylinder H₁; packing / effectually prevents leakage or
escape of the liquid from said cylinder.
The cylinder H is of sufficient capacity to hold the quantity of liquid required
to give the desired area of piston-surface and length of movement to the plunger
to suit the pressure to which the roller is subjected and the distanco it is to be
separated from the other rollers. A pipe I of much smaller area than that of the
cylinder H¹, connects the said cylinder with the bottom of the stand-pipe or
accumulator K. A piston and rod K' fit the interior of the stand-pipe, and
the piston is raised by the pressure of the liquid beneath it, and depressed by
detachable weights, any desired number of which are employed, as hereinafter
described.
In order to prevent the piston-rod K¹ from going higher than required, a
groove B¹, Figure 5 is cut in the lower end of the plunger so as to open
communication between the pipe O and the outside as soon as the plunger reaches
the desired height, when the liquid leaks out between the plunger and ring D¹ and
nut E' which of course stops the motion of plunger. The edges of the groove B¹
are rounded as shown in Figure 6 to prevent cutting the packing. Suitable
grooves may be cut in the ring D¹and nut E to permit the liquid to flow freely
through the same.
.
Guide rods are secured to the head or cap of the stand pipe and project
perpendicularly therefrom. Four guide rods are preferably employed, and a spider
or cross head having four guide-ways may be employed to reciprocate upon the
guide rods. This cross-head is provided with side pins k³k (see Figure 2) from
which are suspended a pair of rods, the lower ends of which are secured to a
cross bar provided with a hook ³ for receiving a stand upon which any desired
Dumber of weights may be placed. This arrangement provides simple and direct
means for applying the power or weights immediately under the piston of the stand
pipe, and admits of the free movement of the piston within the cylinder at all
times.
In order to regulate the amount of liquid within the cylinder and stand pipe, to
replace the liquid that may escape by leakage, or to entirely remove the liquid
from the pressure cylinder or its connections, I employ a reservoir or chamber L
connected at its upper end to the eduction pipe m of a pump M, the induction
pipe m of which is connected to the pipe I, connecting the accumulator and
pressure-cylinder, so that the liquid therein may be readily pumped from said
cylinder-pipe and accumulator and discharged into the reservoir L. A pipe m³
connects the bottom of the reservoir with the pipe I, and a stop cock m³ upon the
said pipe permits its passage to be opened or closed. When the cock is opened the

page_text: oil in the reservoir will flow into the pressure chamber and its connections, and
will rise in the stand pipe or accumulator to a level with the height of oil in the
aforesaid reservoir.
The pump above described may be conveniently arranged for operation by
bolting it to the stand pipe or accumulator. When water is employed as a liquid
it is important to remove said water to prevent rust, and also to prevent freezing
when subjected to cold. When oil is employed, it is often required to remove it
for economic reasons.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is
=
First. The accumulator head provided with the perpendicular guide rods the
vertically moving piston, and the cross-head in combination with the rods land
the removable weights for regulating the pressure of the piston, substantially as
described.
Second. The hydraulic pressure regulator herein described, consisting of the
liquid pressure cylinder and accumulator, in combination with a reservoir L,
pump M, and pipes connecting said reservoir with the pressure cylinder and
accumulator, the said parts being arranged substantially as described, and for the
purpose set forth.
Dated this 27th day of Nov 1884
HASELTINE, LAKE & Co.,
For the Applicant.