Improvements in Filter Plates.
Year: 1891

page_text: PROVISIONAL SPECIFICATION.
Improvements in Filter Plates.
I RUPERT HEATON of La Esperanza Málaga in the Kingdom of Spain Engineer
do hereby declare the nature of this invention to be as follows:-
The object of my invention is to provide filter plates by which the expression of
oil from seeds, juices from fruits or pulps and like operations can be effected more
perfectly and expeditiously than hitherto.
According to my invention the side and bottom parts of the press cage or
receiver and also (when such are used) the parts which are situated between the
layers or bags of materials to be pressed are each constituted by two or more plates
one or more of which is or are perforated. When two or more of the said plates
are perforated the perforations in the adjacent plates are preferably arranged so
that the perforations in the one plate are opposite the unperforated parts of the
other plate or plates. Woven wire cloth or other suitable material may be placed
between the plates. When pressure is applied the material being pressed is forced
into the perforations in the inner plate and the liquid expressed passes between
the plates and escapes from between them or therefrom by suitable channels or by
perforations in the outer plate or plates if it or they be perforated.
Dated this 20th day of Tul 1001
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Filter Plates.
I RUPERT HEATON of La Esperanza, Malaga in the Kingdom of Spain 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 provide filter plates by which the expression
of oil from seeds, juices from fruits or pulps and like operations can be effected
more perfectly and expeditiously than hitherto.
According to my invention the filter plates against which the materials under
treatment are pressed for the purpose of separating the liquid portion from the
solid portion of the said materials are so combined that the liquid is caused to
pass between the adjacent surfaces of two or more plates one or more of which
is or are perforated. With this object the adjacent surfaces of the plates are so
arranged that they allow the liquid to pass between them but oppose the passage
of solid matter and for this purpose the surface or surfaces of one or more of the
plates may be roughened or provided with minute or capillary grooves or woven
wire cloth or other suitable material may be placed between the plates if
required.
And in order that my said invention may be fully understood I shall now
Price 1

page_text: proceed more particularly to describe the same and for that purpose shau refer to
the annexed sheet of drawings the same letters of reference indicating corre-
sponding parts in all the figures.
Figure 1 of the accompanying drawings represents in vertical section an example
of a press constructed with combinations of filter plates according to my inven-
tion and
Figure 2 represents the same in horizontal section.
Figures 3 and 4 drawn to a larger scale represent several examples of different
arrangements or combinations of plates which may be employed in carrying out
my invention in practice as hereinafter described.
According to the arrangement illustrated the materials from which the liquid
is to be expressed are contained in a cylindrical chamber or receptacle 1 placed
under a plunger 2 by means of which pressure is applied in the usual way. The
sides A B and the bottom A' B¹ of this receptacle are constructed with external
perforated plates B B' and internal perforated plates A A'. These plates are so
arranged that the perforations in the inner and outer plates do not coincide the
perforations or holes in each plate being placed opposite to solid or unperforated
parts in the other plate. The adjacent surfaces of the plates are so constructed
or arranged as to permit of the passage or filtration of liquid between them or
woven wire fabric or other suitable material may if required be placed between the
plates with the same object.
To facilitate the extraction of the liquid from the central parts of the mass of
materials in the chamber of the press a series of horizontal filtering plates DE F
may be provided as represented in Figure 1 and in detail in Figure 3. These
plates may be combined in different ways and may have a woven fabric of wire
or other suitable material placed between them if required. In the case of the
plates D two perforated plates are employed being so arranged that the perfora-
tions in the lower plate coincide with the perforations in the upper plate but in
the case of the plates E the perforations in one plate are placed opposite to solid
parts of the other plate. The plates F are combined with an unperforated plate F¹
placed between the two perforated plates F and the plates G consist of one
perforated plate G combined with one unperforated plate G¹.
The escape of the liquid from the part of the materials situated immediately
under the plunger of the press may be facilitated by means of a perforated
plate C.
At the
When pressure is exerted (by means of the plunger 2 for example) on any
material containing a liquid placed in the box or casc 1 constructed with the
perforated plates A. B. A' B' the inner plates A A' are pressed against the outer
plates B B and the material under treatinent is forced into the holes in the
inner plates whilst the liquid portion escapes or filters through the minute or
extremely contracted space existing between the adjacent surfaces of the said
plates which space may or may not be provided with a web of woven wire cloth
The liquid after traversing
or equivalent material as hereinbefore described.
this space is discharged through the perforations in the outer plates B.
same time a similar action takes place between the surfaces of the plates C. D.
E. F. G the materials being forced into the perforations of those plates with
which it comes in contact and the liquid flowing away between the adjacent
surfaces of the plates escaping in the case of these internal plates at the edges or
periphery in proximity to the box or casing A. B. This box or casing may be
dispensed with in dealing with materials containing a large proportion of solid
matter (such as linseed for example) the matter under pressure being simply
placed between a combination of plates such as the plates G G¹ H Figure 4
which may or may not have a layer of woven wire cloth or other equivalent
material interposed between them. In this case the material is retained between
the two pairs or combinations of plates as indicated at K and the liquid part
escapes through the perforations and flows between the surfaces of the plates as
herinbefore described.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is.―
1. A combination of filtering plates one or more of which is provided with
perforations the said plates presenting between their adjacent surfaces a space
admitting of the passage of a liquid but incapable of admitting of the passage of
solid matter substantially as hereinbefore described.
2. The several arrangements and combinations of filtering plates for separating
liquid from solid matter which is pressed against one or both sides of the com-
binations of plates which are so arranged that the liquid is separated from the
solid matter by flowing between the adjacent surfaces of the plates the said
surfaces being roughened or grooved or having a woven wire cloth or other
equivalent material placed between them to facilitate the passage of the liquid if
required substantially as hereinbefore described with reference to the accompanying
drawings.
Dated this 17th day of September 1891.
J. H. JOHNSON & Co.,
Agents.