Improvements in Filters.
Year: 1889

page_text: Date of Application, 14th Jan., 1889
Complete Specification Left, 30th Sept., 1889-Accepted, 7th Dec.,
1889
PROVISIONAL SPECIFICATION.
Improvements in Filters.
We, PIERRE DE MOL of 120 rue Masin Engineer and AUGUSTE GERKEN of
19 rue Uleus Merchant both of Brussels, in the Kingdom of Belgium, do hereby
declare the nature of this invention to be as follows :—
This invention relates to filters designed for use in sugar-works, breweries,
distilleries, and for various other purposes.
The improved apparatus constructed according to the said invention has for its
object to effect the filtration with extreme rapidity. It is especially useful for sugar
works, breweries, distilleries and the like, and as it can be made of any size, may also
serve for domestic uses, and for any filtering purposes including the filtration of oil
and fat.
The said apparatus comprises a receptacle of sheet iron or other metal, which can
be made of cylindric, square or other suitable shape. A short distance above the
bottom of this receptacle is secured a sieve or perforated plate carrying two felt pieces
each of which is about 1 centimeter thick. Upon the upper of these felt pieces is
placed a back the bottom of which is perforated or forms a sieve, and which contains
gas-retort carbon. Two felt pieces rest upon the gas-retort carbon and bear upon
flanges formed inside the said back. Upon the last mentioned felt-pieces is supported
a second back the bottom of which is also perforated or forms a sieve. This second
back contains wood charcoal and carries a third back which is provided with a
perforated bottom or sieve and supports another felt-piece. Upon this felt piece are
placed pieces of sponge covered by another felt-piece upon which rests a sieve or
perforated plate the object of which is to keep the sponges in their place.
Between the bottom of the receptacle and the first sieve or perforated plate
terminates an air pipe which extends along the outside wall of the apparatus to
the upper end of the latter. A second air pipe terminates between the first back
containing the gas-retort carbon and the second back and also extends along the
outer wall of the apparatus to the upper part of the latter.
The air in the apparatus can always escape through this pipe, as the walls
of tho backs do not form an hermetic joint with the walls of the receptacle.
When the improved apparatus is to be used for filtering between two casks,
pipes are connected with the existing air pipes so that they will extend to the
necessary height.
The receptacle is closed by means of a cover, the central part of which is pierced
with a hole provided with a short pipe where with an admission pipe for the liquid to
be filtered is connected.
In certain cases it is necessary to provide the apparatus with a gauge for indicating
the level of the liquid, this gauge being arranged in the ordinary manner along the
outer wall of the receptacle and communicates with the interior of the latter.
The said gauge is designed to obviate the necessity for removing the cover in
order to ascertain the contents of the filter, the admission being regulated according
to the level of the liquid through the medium of the admission cock.
The lower part of the apparatus is provided with a discharge cock for the
filtered liquid. The apparatus can be supported on a bed or on feet or in any other
suitable manner.
The liquid to be filtered on entering the receptacle passes in succession through
the upper sieve or perforated plate, then the felt piece, sponges, another felt piece,
and the sieve or perforated bottom of the aforesaid third back. Thence it falls upon
the wood charcoal, traverses the bottom of the said second back, then the two felt
pieces below, falls upon the gas-retort carbon, passes through the bottom of the said
•

page_text: first back, and the two felt pieces underneath, and finally through the lower sievo
or perforated plate to the bottom of the apparatus, whence it flows through the
discharge cock.
Experiments have shown that an apparatus of 70 by 70 constructed according to
the said invention will filter 1 cubic meter of dirty water in less than two minutes.
The improved apparatus can be maintained at a very small cost and it can operate for
an indefinite length of time without renewal of the materials which are used in the
same. Moreover the cost of manufacturing it is very small and it can be put up in
any place.
Dated this 14th day of January 1980
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Filters.
We, PIERRE DE MOL and AUGUSTE GERKEN both of Brussels in the Kingdom of
Belgium, Manufacturers, 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 :—
This invention relates to filters designed for use in sugar, works, breweries,
distilleries, and for various other purposes.
The improved apparatus constructed according to the said invention has for its
object to effect the filtration with extreme rapidity. It is especially useful for sugar
works, breweries, distilleries, and the like and as it can he made of any size, may also
serve for domestic usos and for any filtering purposes including the filtration of oil
and fat.
In the annexed drawings, Fig. 1 is a side elevation Fig. 2 is a transverse section of
our filter and Fig. 3 is a plan view of the same.
The said apparatus comprises a receptacle A of sheet iron or other metal which can
be made of cylindrical, squaro or other suitable shape. A short distance above the
bottom B of this receptacle is secured a sieve or perforated plate C carrying two felt
pieces D each of which is about one centimetro thick.
Upon the upper of these felt pieces is placed a back E the bottom of which is
perforated and forms a sieve and which contains gas retort carbon G.
Two felt pieces D₁ rest upon the gas retort carbon and bear upon flanges formed
inside the said back E.
Upon the last mentioned felt pieces is supported a second back E¹ the bottom of
which is also perforated or forms a sieve.
This second back contains wood charcoal H and carries a third back E" which
is provided with a perforated bottom or sieve and supports another felt piece D".
Upon this felt piece are placed pieces of sponge I covered by another félt
piece D upon which rests a sieve or perforated plate C the object of which is to keep
the sponges in their place.
Between the botton B of the receptacle and the first sieve or perforated plate C
torminates an air pipe M which extends along the outside wall of the apparatus to tho
upper end of the latter. A second air pipe M¹ terminates between the first back E
containing the gas retort carbon and the second back E¹, and also extends along the
outer wall of the apparatus to the upper part of the latter.
The air in the apparatus can always escape through this pipe as the walls of the
backs do not form an hermetic joint with the walls of the receptacle.
When the improved apparatus is to be used for filtering between two dasks;
pipes are connected with the existing air pipes so that they will extend to the necessary
height.
The receptacle is closed by means of a cover, the central part of which is pierced
with a hole provided with a short pipe wherewith an admission pipe for the liquids to
be filtered is connected.

page_text: In certain cases it is necessary to provide the apparatus with a guage for indicating
the level of the liquid, this gauge being arranged in the ordinary manner along the
outer wall of the receptacle and communicating with the interior of the latter. The
said gauge is designed to obviate the necessity for removing the cover in order to
ascertain the contents of the filter, the admission being regulated according to the level
of the liquid through the medium of the admission cock.
The lower part of the apparatus is provided with a discharge cock R for the
filtered liquid. The apparatus can be supported on a bed or on foot or in any other
suitable inanner.
The liquid to be filtered on entering the receptacle passes in succession through the
upper sieve or perforated plate C then the felt piece 11, the sponges, another felt
piece and the sieve or perforated bottom E" of the aforesaid third back. Thence it
falls upon the wood charcoal, traverses the bottom of the said second back, E' then
the two felt pieces D' below, falls upon the gas retort carbon, passes through the
bottom of the said first back E and the two felt pieces D underneath, and finally
through the lower sieve or perforated plate C to the bottom of the apparatus, whence
it flows through the discharge cock.
Experiments have shown that an apparatus of 70 by 70 constructed according to
the said invention will filter one cubic meter of dirty water in less than two
minutes.
The improved apparatus can be maintained at a very small cost and it can operate
for a long time without renewal of the materials which are used in the same.
Moreover the cost of manufacturing it is very small and it can be put up in any
place.
Cotton being an absorbent material, we have observed that its use as a filtering
material produces a very great effect, especially for liquids containing grease or oil,
for example phlegm in the distillery.
Above the filtering materials which are mentioned in the specification hereabove, is
placed a disc or partition formed of crocheted or plaited cotton thread above the said
disc or partition being put a layer of cotton waste, upon the latter another disc or
partition and so forth two three or more times according to the size of the filter.
means of cotton arranged in this manner very good results are obtained both as
regards the filtration and the preservation of the filtering materials placed below.
By
The greasy substances absorbed by the cotton will not in this case pass to the
sponges, charcoal and other filtering materials, which it is difficult to clean when they
aro covered with grease, whereas the cotton by a simple immersion in tepid water will
be cleaned and rendered suitable for fresh use.
It will be observed that the above described invention is based upon the application
of cotton thread in the form of discs or partitions and of a layer of layers of cotton
waste to the filter described hereabove and other filters.
Having now particularly described and ascertained the
and in what manner the same is to be performed we
claim is :-
nature of this invention
declare that what we
1. The improved filter constructed substantially as herein described with reference
to the accompanying drawings.
2. In a filter the use of air pipes arranged substantially as described and shown in
the accompanying drawings, and for the purposes set forth.
3. A filter consisting of an external casing having two or more compartments
forined respectively by a perforated plate carrying felt covered by a layer of retort
carbon, wood charcoal or other filtering materials in combination with air pipes,
substantially as described.
0011
1000
ABEL & IMRAY,
Agents for the Applicants.