Improvements in Hydraulic Presses for Expressing Oil from Seeds and such like.
Year: 1895

page_text: Date of Application, 21st Dec., 1895
Complete Specification Left, 19th Sept., 1896-Accepted, 21st Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Hydraulic Presses for Expressing Oil from Seeds
and such like.
GEORGE PEARSON WALLIS 85 Hall Lane, Armley, Leeds, Engineer, do hereby
declare the nature of this invention to be as follows :-
I will in the first instance take a hydraulic press with a circular press box,
although other shapes of press boxes may be used, according to the shape of the
cake required, and such boxes may be used with or without cloths as circumstances
may demand. This press box is carried on rails or other suitable appliances, so
that it can be easily turned round, that is, end for end, and this may be done either
by moving it along the rails from under the press head, and then turning it round,
or by other suitable means as desired. To enable the press box to be turned round
easily, it may be carried by two pins, the bearings of said pins being runners or
wheels which are carried on rails as before mentioned, and either operated by gear
or hand as the case demands.
The method of working is as follows:-
i
Sufficient quantity of meal or seed to make one cake is fed into the press box,
the meal or seeds is now levelled and a metal plate placed on the top of same,
and this operation is continued till the press box is filled. The loose head of the
The ram
press is now drawn over the press box, and pressure applied to the ram.
rises and compresses the meal or seeds in the press box, and after a short time
oil begins to be expressed. When the meal or seeds in the press box have been
sufficiently compressed for my purpose, 1 turn the press box round, and fill in the
space caused by the compression with more meal or seeds & plates, till the press
box is again full. The loose head is now drawn forward over the press box and
When the meal or seeds have been
pressure applied, oil being extracted as before.
sufficiently compressed for my purpose, I transfer the press box to another press
of much greater. power, or as it may be termed a finishing press, and this press
completes the extraction of oil required. In the finishing press a much shorter
ram and cylinder can be used. Whilst the finishing press is completing its work,
another charge is being prepared in the first press, so that when the finishing press
has done its work, the press box containing the finished cakes, is transferred to
the first press, where the cakes are forced out by the action of the ram, and the
charge prepared by the first press transferred to the finishing press and so on.
The first press may be of sufficient capacity for one or more finishing presses,
the object of the first press being to extract part of the oil, and at the same time
give more work to the finishing press, by having the press box almost-full.
Dated this 20th day of December 1895.

page_text: COMPLETE SPECIFICATION.
Improvements in Hydraulic Presses for Expressing Oil from Seeds
and such like.
I, GRORGE PEARSON WALLIS, late of Hall Lane, Armley, but now of Queen's
Engineering Works, Water Lane, Leeds, in the County of York, 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
--
The object of my invention, is to. so arrange mechanism for expressing oil from
seeds and like materials, that the quantity of seed packed into the pressing
chamber is increased, thus materially increasing the speed of work done by a press
or group of presses.
In order that my invention may be clearly understood, I will proceed to describe
same with reference to the accompanying drawing, in which similar letters refer
to like parts in both figures.
Figure 1 is a side elevation partly in section, shewing apparatus constructed
according to my invention, and Figure 2 is a similar view of a portion of the
same apparatus shewing the parts in different positions.
According to my invention, A is a packing press, which is provided with a swing
head B having open and closed portions C and D on same. The said swing head B
is fulcrumed on one of the columns of the press A, in such a manner that either
of the portions C or D may be brought at will to the centre of the press A.
E is a finishing press, and F, F are rails- which are attached to the columns of the
presses A and E. G is the short hydraulic ram of the press E, which is supplied
from the high pressure accumulator, and H is the long hydraulic ram of the
packing press A, which is supplied from the low pressure accumulator. K, K are
press.boxes for containing the seed to be pressed, and the. said boxes K are carried
by truunions L in carriages M which run on the rails F before referred to.
The box K is placed in position in the packing press A, and charges of meal
from which oil is to be expressed, are placed in the said box K through the open
portion C of the swing: head B. Dividing plates are inserted in the box K between
each charge of meal, and when the box K has been filled in this manner, the
swing-head Bis swung round, bringing the closed portion D over the box K, and
on. pressure being applied to the ram. H the contents of the box K are consolidated
into cakes, the ram entering the case and forming a cavity in the base of same.
The friction of the cakes with the sides of the box, causes them to remain in-.the
position to which they have been forced, and on lowering the ram_and_swinging
the head B on its axis, the box K may be turned over on its trunnions L so as to
bring the empty portion to the top of the case K; and the said.turning over may
be performed by hand, as the cakes having been pressed to the top of the case,
its tendency will be to at once turn over on being released at the top and bottom.
The open portion C of the head B, is now again brought over the case, and the
empty portion of the said case is filled: in. with material in a similar manner to that
employed in first filling the case. The carriage M is now run along the rails to
the finishing press E, where the contents of the said case are subjected to a high
pressure for extracting the oil, and during this pressing process, which lasts a com-
paratively long time, another box K is packed in the packing press A, in a similar
manner to that before described. Instead of swinging the head B for disengaging the
box K as above described, the box may be run out on its carriage M clear of the
press A, and the said box may be then turned over and run back to the press A
for completing the filling operation.
For the sake of simplicity, have described my invention as applied to a
packing arrangement supplying a single press, but it will be readily understood

page_text: that as the packing may be effected in much less time than that required for
pressing, one packing arrangement may be made to serve several presses situated in
the same system.
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. In apparatus for extracting oil from seed and like material, the reversing of
the meal box, substantially as and for the purposes set forth.
2. In apparatus for extracting oil from seed and like material, the box K,
mounted on trunnions L, and carried in the carriage M, substantially as and for the
purposes set forth.
3. The press A, box K, trunnions L, carriage M and rails F, in combination
with a suitable press or system of presses, substantially as and for the purposes set
forth.
Dated this 18th day of Sontember 1896
BREWER & SON,
London and Leeds, Agents for the Applicant.
BREWER & SON,
London and Leeds, Agents for the Applicant.