Improvements in Separating Plates for Hydraulic Presses.
Year: 1896

page_text: Date of Application, 22nd July, 1896
Complete Specification Left, 22nd Apr., 1897-Accepted, 22nd July, 1897
Improvements in Separating Plates for Hydraulic Presses.
AUGUSTE CONTET of 186 Avenue d'Arenc Marseilles, France, Manufacturer, do
hereby declare the nature of this invention to be as follows:-
In Hydraulic-presses, whether in case or open, employed with bags or such like, as
at present used for extracting any kind of matter (fatty substance or oils, for
example), there are arranged hetween the bags containing the matter to be pressed,
a number of simple plates made of cast-iron or sheet-iron smooth or corrugated,
loose or fixed to the Press by chains or other means of suspension to facilitate the
loading of the press and to assist in taking out the pressed matter which is done
through the ends of the bags.
The ontflow of the liquid to be extracted takes place only at the ends of the bags,
that is to say through their exterior surface which is much less than the two plane
surfaces forming the base and the top of the cake consisting of the substance
remaining. The said plates prevent any direct escape of the liquid and in order
that the out flow may be completely effected, it is necessary that the pressure should
list a protracted length of time which is very troublesome.
The present invention with a view to getting rid of these inconveniences, provides
certain modifications and improvements in the said plates.
These modifications and improvements consist in piercing each plate with a central
hole and fixing, round this hole, a ring which clamps into the ring below it and so on
continually one after another until a pipe is formed for carrying away the liquid.
The liquid passes through the interstices arranged between small blades forming the
plates, and secured on the two faces of an intermediate sheet-iron; the direction of
the upper blades being perpendicular or diagonal to the lower ones. The liquid is
conveyed to the central hole by any desired number of converging grooves. These
grooves are made on the two faces of the smooth or corrugated sheet-iron, which
separates the interstitial blades. This sheet-iron plate is rivetted or screwed along
with the blades.
According to the circumstances of the case, the plates are furnished with a groove
on the edge or narrow side to receive a strip of iron fixed on the central sheet-iron by
a screw in order to prevent the introduction of any substance, or body, extraneous to
the extracted matter, into the grooves and the bottom of the interstices, by the
perimeter of the plates.
The use of these plates in Presses, enclosed in cases, simplifies the construction of
the latter by doing away with the inside little plates which serve for carrying off the
liquid, which instead of being effected by the walls is done by the central ring forming
a pipe as the liquid passes out it is led into the usual reservoir.
By this system, the plates are merely covered by a simple cast-iron or steel tube
the inside walls of which are smooth.
One of the chief advantages of these plates consists in the suppression of the
bags and packings. These plates may be made to match any shape of case, that is
to say they can be made square rectangular, hexagonal, octogonal round, oval or of
any other required shape.

page_text: Their construction may be simplified by giving the blades the shape of sectors. In
this way, the interstices will all terminate at the centre and there is no need of
converging grooves in this case.
To enlarge the surface of the interstices, the blades may be made notched or indented.
Such a plate is distinguished by economy of force and less wear and tear of the bags
or packings. The output is also more considerable and more rapidly effected.
Dated this 21st day of July 1896.
L. DUVINAGE,
Agent for Applicant.
Improvements in Separating Plates for Hydraulic Presses.
I, AUGUSTE CONTET of 186 Avenue d'Arenc, Marseilles, France, Manufacturer,
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:-
In the hydraulic presses enclosed by a framing or open, using woollen or hairbags
nowadays used for the extraction of any matter whatever (fatty substances or oils, for
instance) there are placed between the woollen or hairbags containing the substance
to be extracted simple plates of sheet iron or cast iron, plain or corrugated, detached
or fastened by means of chains or any other kind of suspension facilitating the
charging of the press and aiding the outlet of the matter pressed which takes place
by the extremities of the woollen or hairbags.
The outlet of the liquid to be extracted only taking place at the bottom of the
woollen or hairbags, that is to say by their exterior surface which is inuch less than
the two plane surfaces formning the base and summit of the oil cake.
Mentioned plates of sheet-iron plain or corrugated prevent any direct exhaustion
of the liquid, and, in order that the efflux may be thoroughly effectuated, the pressure
must of a necessity last a much too long time which is very onerous.
The present invention with the view of obviating these inconveniences treats of
these modifications and improvements made in the above named plates.
These modifications and improvements consist in piercing each plate with a central
hole h Fig. 2 and of fastening around this hole a tube which fits into the other tube,
situated beneath and in like manner the one after the other, so as to form a conduit
for the flowing of the liquid.
The liquid passing across the interstices of the blades a &e the direction line of
the blades e being perpendicular or diagonal to the blades a Fig. 1, is channelled by
a large number of converging grooves e which lead it to the central hole h.
These grooves are made on the two sides of the sheetiron plain or corrugated d
which separates the interstitial blades.
This plate in sheetiron is riveted or screwed to the blades a &c Fig. 2 & 3.
According to the case, the plates are provided with a groove on the surface for
holding an iron band f, fastened on the sheet iron in the middle by a screw
Fig. 2,
in order to prevent any foreign substance from entering the matter extracted in the
grooves and the base of the interstices by the perimeter of the plates.
The use of these plates in the presses enclosed by a framing admits of the
simplifying of same and leaving ont of their interior the small blades serving for
the flowing of the liquid, which instead of being effected by the partitions, will on the
contrary be achieved by the central tube forming the conduit; at its outlet it will be
conducted into its ordinary reservoir.
By this system the plates have as a casing but a simple tube in cast iron or steel
the interior partition-walls of which are even,

page_text: One of the greatest advantages offered by the plates consists in the leaving out of
the hairy bags and oil-bags.
They may be adjusted to casings of any shape, that is to say one may at pleasure
make them square, right-angled, hexangular, octangular as well as round oval, or any
other shape.
Their construction may be simplified by imparting to the blades a &e the form of
sectors. In this way the interstices will all discharge themselves in the centre and it
will no longer be necessary to channel them through the converging grooves which
are left out in this case.
In order to augment the surface of the interstices the plate may be made either in
notched or jagged iron Fig. 4.
A plate of this kind is characterised by its transferring less power, a less wear of the
woollen or hairy bags, a more considerable and more rapidly accomplished produce.
The discharging-conduit Fig. 2 may be modified by the following means, which is
besides a real improvement to the above described system: this modification consisting
in placing on the upper part of each interstitial plate a tube large enough to enter
into the one affixed to the lower part of the plate situated at the top, Fig. 5, or a
single juncture tube of similar slape as the two preceding ones and one part of which
is fastened either to the lower or upper surface of the plate Fig. 6.
The latter arrangement putting away with a fastening link, I also intend to put two
serewed tubes together and then to be screwed into the plate or two tubes joined by
screws the one in the other and jamming the plate Fig. 7.
In the second third and fourth cases these tubes are provided with holes at the
height of the interstices and grooves, to allow of the liquid flowing into the central
conduit.
By these means and after the first stroke of the operation, the tubes having entered
previously the one into the other and forming the conduit there need be no fear that
the remains of the substance to be pressed find their way into mentioned conduit and
mixing up with the fluid extracted."
The above arrangement facilitates the unstopping of the pipe or frame, the pressure
being exercised in every way on the loaf or oilenke, the latter securing the tube of the
upperpart of the plate but without having any effect on the lower tube of the one
placed above, which owing to the above fact may be removed with the hands.
To increase the exhaustion of the liquid, and in case I should wish to employ
oilbags affix to my plates cordons Fig. 1 & 5, the upperpart of which have a
semi-elliptical shape and whose flat part, which is applied is provided with grooves.
contrived in the direction of the interstices.
The above applying of cordons allows the opening of the interstices to bo
enlarged in the part they cover and increasing the filtering surface of the plates.
For the very same motive, I contrive under each tube converging grooves
which run out in the central hole.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed I declare that what
I claim is:
1° Separative plates for hydraulic presses characterized by blades having
interstices between them and constituting the upper and lower surface of the plate,
these surfaces being connected by a plain or corrugated sheet-iron for conducting
the liquid passing through the interstices into a central collecting conduit.
20 The placing of the interstitial blades, upper or lower perpendicularly or,
diagonally, the one on the the other and the placing of converging grooves to
conduct the liquid towards the central conduit.
3° The constructing of blades in the form of sectors for suppressing the converging
grooves (channels).
4° The joining of the central collecting tubes of the superposed plates the one i..
the other to forin a continued conduit permitting the drawing together of the plates
5° The tube placed on the upperpart of the plate preventing the substance to be

page_text: pressed from finding a passage into the central hole during the unstopping and
allowing the plate situated at the top to be removed without any effort whatever.
GO The two other tubes either in one or two pieces, screwed into one another or
into the plate.
70 The convergent. grooves contrived in the tubes.
8° The applying of cordons with grooves underneath the two plane surfaces of
the plates.
DLE, DIE Jan of Al 1807
L. DUVINAGE,
Agent for Applicant.