Improvements in Filters.
Year: 1898

page_text: Date of Application, 26th Apr., 1893-Accepted, 25th June, 1898
COMPLETE SPECIFICATION.
Improvements in Filters.
I, ISIDORE FOKCHANER, of 20, Rue Auguste Orts, Brussels, in the Kingdom of
Belgium, Commission Agent, 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 this invention is to produce a filter for water or other liquids,
in which the filtering will be effected most efficaciously, the cost of manufacture
will be relatively small, and the arrangement, and, above all, the cleaning will be
simple and easy.
In the accompanying drawing,
Fig. 1 is an elevation of the filter, half in section;
Fig. 2 is a transverse section; on the line - of Fig. 1; and
Figs. 3 and 4 represent plates which will be more fully referred to.
The vessel a, which constitutes the filter, is closed by a cover a¹, furnished with
a pipe or tube a², for the supply of the liquid to be filtered, and containing a
cock a³.
The filtered liquid escapes by the tube a, connected to the bottom of the
vessel a, and arranged so that the tube which enters the vessel, rises so that it
will enter into a hollow formed in the block c, consisting of compressed filtering
material, such as animal charcoal or bone charcoal.
The block c is surrounded and covered by a granular filtering material d,
such as charcoal. This is covered by a sheet of asbestos c, on which is placed
a layer of pulverized bone or animal charcoal d', to be covered by another sheet
of asbestos e¹. Above this sheet is an opening to a cock h, the use of which will
be fully explained.
On the sheet of asbestos e¹ is placed a plate f, pierced with holes f³, and
provided with stays or supports f¹, to carry a second perforated plate g, on which
rests the edge of the cover a¹.
The filter being thus arranged, the liquid is allowed to enter by the pipe a²,
and passes by the holes in the plates g and f, which spread it all over the
surface of the filtering material, through which the liquid passes slowly, collects
in the hollow of the block c, and passes out by the tube a*.
Such is the normal operation of the filter.
When it is necessary to clean it, an india rubber tube is adapted to the tube at,
and clean water is allowed to run into it. The cock a³ is closed, and the cock h is
opened.
The cleaning water rises through the filtering material, carrying with it all
the impurities which have collected there, and passes out by the cock h.
The plates and g, kept in position by the stays or supports f¹, and the edge
of the cover a, prevent the filtering materials from becoming displaced during
the upward march of the cleaning water.
As soon as the filtering material is considered to be sufficiently cleansed, the
cock h is closed, a³ is opened, the rubber tube is removed from at, and the filter.
is worked in the normal manner. ·

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:-
In a filter, the combination of a vessel a, having a cover a¹, an inlet pipe a³,
and an outlet pipe at, a hollow filtering block c enclosing the end of the outlet
pipe, filtering materials, consisting of granular charcoal d, animal charcoal d
between two sheets of asbestos e and e', with a perforated plate f furnished with
stays or supports f¹, a perforated plate g, and an opening with a cock h arranged
between the two plates, and serving as outlet for the cleaning water, as above
described and represented in the drawing.
NEWTON & SON,
Agents for the Applicant.