Improvements in Apparatus for Extracting Juice from Sugar Canes.
Year: 1891

page_text: Date of Application, 29th Sept., 1891
Complete Specification Left, 25th June, 1892-Accepted, 30th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Extracting Juice from Sugar Canes.
I, DUNCAN STEWART, of London Road Ironworks, Glasgow, in the County of
Lanark, North Britain, Engineer, do hereby declare the nature of this invention
to be as follows, that is to say:
My said invention has for its object by means of improved apparatus to extract
juice from sugar canes in a complete, expeditious and economical manner.
In carrying out my invention I provide a strong inverted or open-bottomed
casing or vessel, supported upon and held by pillars above an upwardly acting
hydraulic press, the platen of which is constructed so as, when raised, to close
tightly up against the flanged bottom edge of the inverted vessel. I also provide
a perforated shell or basket to receive the canes which are placed in it by preference
on end. This shell may be made with an inner perforated tube, the space for the
canes being thus made annular. The shell when filled with canes is run on a truck
or on wheels on to the platen and is then raised by the bottom hydraulic press up
into the inverted casing. A piston or plunger actuated by an hydraulic press at
the top of the inverted vessel is then forced down so as to crush the canes and
express a large portion of the juice; and whilst this operation is taking place a
vacuum is formed within the vessel by suitable pumps which are connected to a
closed receptacle provided to receive the juice and communicating with the bottom
of the inverted vessel by preference at several points round the circumference.
After the juice expressed by the crushing piston has been drawn off, the piston is
raised, and then water or syrup of suitable strength and by preference heated, is run
into the vessel or may be forced into it under pressure. The water or syrup thus
introduced acts by infusion on the remaining juice or saccharine matter in the cane
and taking it into solution carries it off when run out. The crushing operation
may be repeated if found necessary.
Dated this Twenty-eighth day of September 1891.
EDMUND HUNT,
Applicant's Agent:
COMPLETE SPECIFICATION..
Improvements in Apparatus for Extracting Juice from Sugar Canes.
I, DUNCAN STEWART, of .London Road Ironworks, Glasgow, in the County of
Lanark, North Britain, 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, that is to say :-
My said invention has for its object, by means of improved apparatus to extract
juice from sugar canes in a complete, expeditious, and economical manner.
In carrying out my invention I employ apparatus in which the sugar canes are
crushed and otherwise treated in a closed vessel, an example of such apparatus
being shown on an accompanying sheet of explanatory drawings which are herein-
after referred to in describing my improvements.
The drawings consist of an elevation of the apparatus with the ground details
in vertical section.
I provide a strong inverted or open-bottomed casing or vessel, A, supported upon
and held by pillars, B, above an upwardly acting hydraulic press, C, the platen, D,
of which is constructed so as, when raised, to close tightly up against the flanged
bottom edge, E, of the inverted vessel, A. I also provide a perforated shell or

page_text: basket, F, to receive the canes which are placed in it by preference on end that is
vertically. This shell, F, may be made with an inner perforated tube, G, indicated
by dotted lines, the space for the canes being thus made annular. The shell, F,
when filled with canes is run on a truck or on wheels, H, on to the platen, D, and is
then raised by the bottom hydraulic press, C, up into the inverted casing, A.
A piston, J, indicated by dotted lines, or a plunger actuated by an hydraulic
press, K, at the top of the inverted vessel, A, is then forced down so as to crush
the canes and express a large portion of the juice; and whilst this operation is
taking place a vacuum is formed within the vessel by suitable pumps (not shown)
which are connected by a pipe, P, to a closed receptacle, L, provided to receive the
juice and communicating pipes, M, N, with the bottom of the inverted vessel, A, by
preference with connecting branches at several points round the circumference.
After the juice expressed by the crushing piston, J, has been drawn off, the
piston is raised, and then water or syrup of suitable strength and by preference
heated, is run into the vessels or may be forced into it under pressure through
pipes, Q, N. The water or syrup thus introduced acts by infusion on the remaining
juice or saccharine matter in the cane and taking it into solution carries it off when
run out. The crushing operation may be repeated if found necessary.
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 :-
The improved apparatus comprising an inverted vessel, an hydraulic press arranged
for closing the bottom of the vessel and lifting up into it a shell or basket containing
sugar canes, a piston moved downwards by hydraulic pressure for crushing the caues
a vessel to receive the juice, pipe connections with pumps for producing vacuum,
and pipe connections for injecting water or syrup, the parts being combined and
operating substantially as hercinbefore described.
Dated this Twenty-fourth day of June 1892.