Improvements in Strainers for Oil and similar Presses.
Year: 1892

page_text: The decision of the Comptroller-General, of the 4th day of July 1894,
allowed, under Section 18 of the Patents, &c. Act, 1883, an Amendment of
this Specification.
Date of Application, 5th May, 1892
Complete Specification Left, 3rd Feb., 1893-Accepted, 4th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Strainers for Oil and similar Presses.
I, MARIE PHILIPPE ADOLPHE TOLLIN, of 45 Rue St. Sébastien, Paris, in the
Republic of France, Stock Broker, do hereby declare the nature of this invention
to be as follows:-
My invention relates to strainers for oil and similar presses.
The interior surfaces of strainers for the extraction of oil and the like from
grains and other materials are generally formed either of strips fixed individually
by means of screws, which limits their number and renders the regulation of the
game a long and difficult operation, or of groups of strips retained at their
extremities in dove-tails and held laterally by broader strips fixed by means
of screws, or else of a series of metallic wires soldered at their extremities and
stretched upon tubes which are held in grooves by means of keys or wedges.
These devices have the defect of permitting the totalisation of the space necessary
between every two wires or strips for the passage of the oil, and thereby allowing
the escape of solid particles of the materials treated.
To obviate these defects I have devised an arrangement of special metallic strips
constituting the interior sides of the strainer.
These metallic strips are of such a section that when their rear parts are placed
together narrow slits will be left in front which do not vary in size during the
work of compression. These slits terminate in longitudinal channels which are
open at their lower end.
Each group of strips constituting one of the sides of the strainer is fixed by
means of a key or wedge which ensures contact between all the strips. These
strips, which are interchangeable, have dove tail extremities and are held against
the segments of the strainer by means of a plate fixed by screws.
Under the force produced by an hydraulic press the oil or other liquid expelled
from the solid materials will pass through the slits and flow through the aforesaid
longitudinal channels into a vessel placed below the strainer.
This mode of construction of the straining surface possesses the advantages that
the mounting, dismounting and cleaning can be easily and rapidly effected; there
will be no totalisation of the space which must be left between the strips, conse-
quently the liquid will be clearer; the strips may be optionally replaced by others
for diminishing or augmenting the size of the slits according to the material to be
treated; the strainer costs less than those heretofore employed and can be easily
kept in order, no special workmen being required.
Dated this 5th day of May 1892.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.

page_text: Improvements in Strainers for Oil and similar Presses.
I, MARIE PHILIPPE ADOLPHE TOLLIN, of 45 Rue St. Sébastien, Paris, in the
Republic of France, Stockbroker, 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 :-
My invention relates to strainers for oil and similar presses.
The interior surfaces of strainers for the extraction of oil and the like from grain
and other materials are generally formed either of strips fixed individually by
means of screws, which limit their number and render the regulation of the same a
long and difficult operation, or of groups of strips retained at their extremities in
dove-tails and held laterally by broader strips fixed by means of screws, the said
surfaces are often formed of a series of metallic wires soldered at their extremities
and stretched upon tubes which are held in grooves by means of keys or wedges.
These devices have the defect of permitting the totalisation of the space necessary
between every two wires or strips for the passage of the oil, or in other words, of
allowing the space between any two wires to be increased by pressing the adjacent
wires together and so decreasing the space between the same and thereby allowing
the escape of solid particles of the material treated.
To obviate these defects I have devised an arrangement of special metallic strips
constituting the interior sides of the strainer. This arrangement is represented by
way of example in the accompanying drawing in which
Figure 1 is a vertical section showing the general arrangement of a strainer the
sides of which are constructed according to my invention.
Figure 2 is an horizontal section of the same taken on the line 1-2 of Figure 1.
Figure 3 is a transverse section of the metallic strips constituting the sides of the
strainer drawn to an enlarged scale.
Figure 4 is a longitudinal section of one of these metallic strips also drawn to an
enlarged scale.
These metallic strips ff are of such a section that when their rear parts are placed
together narrow continuous slits i will be left in front which do not vary in size
during the work of compression. These slits terminate in longitudinal channels ji
which are open at their lower end.
Each group of strips constituting one of the sides of the strainer is fixed by means
of a key or wedge g which ensures contact between all the strips at their rear, or
outer parts while leaving as aforesaid continuous narrow slits between their inner edges.
The strips are interchangeable and have dove tailed extremities the said strips
being held against the segments of the strainer by means of a plate k fixed by
screws.
Under the force produced by an hydraulic press the oil or other liquid expelled
from the solid materials will pass through the slits ii and flow through the aforesaid
longitudinal channels jj into a vessel placed below the strainer.
This mode of construction of the straining surface possesses the advantages that
the mounting, dismounting and cleaning of the same can be easily and rapidly
effected; and there will be no totalisation of the space which must be left between
the strips, consequently the liquid will be clearer; the strips may be replaced at
will by others when it is desired to diminish or augment the size of the slits, ii,
according to the material to be treated; the strainer costs less than those heretofore
employed and can be easily kept in order, no special workmen being required.

page_text: 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 :-
The arrangement of metallic strips constituting the interior sides of the filtering
surfaces of strainers for extracting oil and other similar products, as hereinbefore
described and represented in the accompanying drawing.
Dated this 3rd day of February 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.