Year: 1887

page_text: Date of Application, 11th Oct, 1887
Complete Specification Left, 11th July, 188
Complete Specification Accepted, 17th Aug., 18
We JOHN MCCLURE CALDWELL PATON Engineer, and JOHN WILKINSON, Engineer
both of Bloomsgrove Works, Nottingham in the County of Nottingham do hereby
declare the nature of this invention to be as follows:-
Our invention relates to presses for the extraction of oil from oleagenous seeds,
such as lineseed, cotton seed and others, and consists in an improved construction or
arrangement of the plates used in said presses. In the process of extraction the seed
after being reduced to powder or meal is wrapped in a cloth and then placed between
plates and subjected to pressure, usually in a hydraulic press. The plates referred to
are of a special shape, being corrugated transversely so that a longitudinal section
through the plates shows a corrugated form, while the cross section is of even thick-
ness in the middle part and thickened gradually at each side. These thickened portions
form shoulders which prevent the package of seed from spreading sideways. The
surface of these plates is ordinarily smooth or nearly smooth in a transverse direction
and it is found in practice that the cloth in which the seed is wrapped having
tendency to slide on the shoulders when the pressure is applied usually does so and
this sliding action under pressure causes rapid wear of the cloths. The object of our
invention is to obviate this wear by preventing the sliding of the cloths on the
shoulders of the pressplates as much as possible.
a
For this purpose we artificially roughen the said shoulders in excess of any rough-
ness that may be produced in the ordinary way of manufacture. This may be done
by forming them with projections, grooves or corrugations, suitable for preventing
the sliding of the cloths. These grooves, projections or corrugations may be longi-
tudinal parallel with the edges of the press plates, or inclined thereto or curved or
wavy, and they may be either continuous or intermittent and may be placed at any
suitable distance apart or made to cross each other, so as to formn chequered surfaces.
They may be formed in the plates by means of a plaining machine or other suitable
tools, or in case of plates cast of iron, steel or other material they can be cast in or on

page_text: the plates, or when such plates are made of rolled iron or steel or other rolled
material grooves, projections corrugations may be formed in or on the rolls and these
will cause corresponding projections grooves or corrugations on or in the plates.
The shoulders of the press plates may also be roughened by forming countersunk
recesses on them at regular or irregular intervals by means of countersink drills, or
such countersinks or corresponding raised cones may be cast in or on the plates or
may be produced by means of rolls, when the plates consist of rolled material. We
do not confine ourselves to the special means of producing the roughness of the
shoulders of the press plates hereinbefore described, but any other means may be
employed suitable for preventing the sliding action of the cloth or said shoulders.
Dated the 10th day of October 1887.
EMMOTT & Co.,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Plates of Presses for the Extraction of Oil
from Seeds.
We JOHN MCCLURE CALDWELL PATON Engineer, and JOHN WILKINSON, Engineer
both of Bloomsgrove Works, Nottingham in the County of Nottingham 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 :-
Our invention relates to presses for the extraction of oil from oleagenous seeds, such
as linseed, cottonseed, and others, and consists in an improved construction or arrange-
ment of the plates used in said presses. In the process of extraction the seed after
being reduced to powder or meal is wrapped in a cloth and then placed between plates
and subjected to pressure, usually in a hydraulic press. The plates referred to are of
a special shape, a longitudinal section through the plates showing a corrugated form,
while the cross section is of even thickness in the middle part and thickened gradually
at each side. These thickened portions form shoulders which prevent the package of
seed from spreading sideways. The surface of these plates is ordinarily smooth or
nearly smooth in a transverse direction and it is found in practice that the cloth in
which the seed is wrapped having a tendency to slide on the shoulders when the
pressure is applied usually does so and this sliding action under pressure causes rapid
wear of the cloths. The object of our invention is to obviate this wear by preventing
the sliding of the cloths on the shoulders of the press plates as much as possible.
For this purpose we artificially roughen the said shoulders in excess of any rough-
ness that may be produced in the ordinary way of manufacture. This may be done
by forming them with projections, grooves, or corrugations suitable for preventing the
sliding of the cloths. These grooves projections or corrugations may be longitudinal
parallel with the edges of the press-plates or inclined thereto or curved or wavy and
they may be either continuous or intermittent, and may be placed at any suitable
distance apart or made to cross each other so as to form chequered surfaces.
On the sheet of drawings appended hereunto fig. 1 shows a cross section of an
ordinary press plate a a being the thickened parts herein before described forming the
shoulders b b which are smooth as shewn. Fig. 2 shows a cross section through a
press plate with the shoulders c c roughened, by corrugations or by projections with
grooves between them. Figs. 3, 4, 5, and 6, show partial plan views of the ends of
plates roughened in different ways, fig. 3 showing wavy or curved, fig. 6 straight and
fig. 5 inclined corrugations or projections with grooves between them, while fig. 3
shows chequered projections.
These corrugations projections or grooves may in the case of plates cast of iron steel
or other metals be cast on or in the plates, or when such plates are made of rolled
metals, grooves, projections or corrugations may be formed in or on the rolls and these
will cause corresponding projections, grooves or corrugations, on or in the plates.

page_text: The grooves, projections or corrugations may also be produced on the plates by means
of cutters or tools on planing or other suitable machines. The shoulders of the press
plates may also be roughened by forming countersunk recesses on them at regular or
irregular intervals, by means of countersink drills or such countersinks or corre
sponding raised projections may be cast in or on the plates or may be produced by
means of rolls when the plates consist of rolled material. Fig. 7 shows a partial plan
of a plate roughened by circular projections and fig. 8 a partial plan of a plate
roughened by countersunk recesses.
We wish it to be understood that we do not confine ourselves to the arrangements
of grooves, projections, corrugations or recesses shewn on the drawings and herein
before described or to any special method of producing the roughness of the shoulders
of press plates, but any other suitable arrangement or method of producing rough-
ness in excess of the natural roughness of the shoulders of press plates resulting from
the ordinary mode of manufacture may be used.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is,
Firstly, preventing the slip of press cloths on press plates for oil presses by rough-
ness of surface artificially produced on the shoulders of said plates substantially as
herein before. described.
Secondly, making the shoulders of press plates for oil presses with an artificially
produced roughness of surface substantially as herein before described and for the
purpose set forth.
Thirdly, roughening the surface of the shoulders of press plates by means of
grooves, projections, corrugations, recesses or their equivalents substantially as herein
before described and for the purpose set forth.
EMMOTT & Co.,
Agents for the Applicants.