Improvements in Apparatus and Methods for Filtering Water and other Liquids.
Year: 1893

page_text: Date of Application, 9th May, 1893
Complete Specification Left, 8th Feb., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus and Methods for Filtering Water and
other Liquids.
We, GEORGE WEDDELL, 20 West Grainger Street, Newcastle-on-Tyne,
Chemist, and JOHN CLARK, 11 Melbourne Terrace, York, Commercial Traveller,
do hereby declare the nature of this invention to be as follows: -
In accordance with our invention we employ a suitably shaped enclosing vessel
of glass, earthenware, china, slate, marble, enamelled metal or any other suitable
material. Said vessel is divided longitudinally into three compartments for holding
respectively the unfiltered water, the filtering apparatus and material or medium
and the filtered water. The divisions are formed by two partitions. The first
separates the unfiltered water from the filtering apparatus and material or medium
and preferably does not extend quite to the bottom of the main enclosing vessel :
when however that is the case, it is provided with perforations through which
water can freely pass. The second partition reaches to the bottom of the main
enclosing vessel but not to the top and divides the filtering apparatus and material
or medium from the filtered water.
The arrangement of the filtering compartment is as follows:-Near the bottom
is a movable perforated grid, slightly raised on a ledge or on a support extending
from the lower end of vessel so that water can flow freely underneath it. On said
grid any suitable filtering material or medium is placed, and is held in position by
another perforated grid at the top. The filtering material is thus arranged so that
it can be easily examined and when necessary renewed..
The mode of filtration is as follows:-The unfiltered water is fed either
mechanically or automatically by a floating ball-tap into the first compartment, it
passes underneath the division into the second compartment, and then ascends by
gravitation through the bed of filtering material or medium, and falls over the
edge of the second partition into the third compartment reserved for the filtered
water. A tap is placed in the third compartment for drawing off any of the
filtered water and another in the first compartment to draw off the unfiltered to
allow the filtering material to be exposed to the air so that the impurities may be
thus oxidised and destroyed.
Our invention may also be applied with advantage to the construction of a
refrigerating filter. Under said application the device would consist of a main
enclosing vessel constructed of earthenware, glass, marble, china, slate, enamelled
metal, or any other suitable material, divided by two partitions fixed at one end but
which do not extend to the bottom of the main enclosing vessel, allowing the water
to pass underneath. These two last referred to- partitions are connected with a
third partition extending across the filtering vessel at one end. Said third partition
is secured at the bottom of the vessel but having openings at the bottom for the
passage of the water to the filter bed. The filtering material or medium is placed
in the compartment formed by the cross partition and packed in the same manner
as in the case of the hereinbefore first described application of our said invention.
Now, in further reference to our invention, the water is admitted into either side
of the filtering vessel and occupies both sides of the centre compartment and also
flows underneath the middle compartment and after passing through the filter bel
by gravitation flows from it by a suitable opening into the middle compartment
which thus contains the filtered water surrounded at the sides and bottom by fresh
cold water from the main service, and it is thereby kept at a low temperature.
A tap is placed at one side of the vessel connected with a waste pipe to allow the

page_text: =
water to be run off at frequent intervals for oxidation and inspection. Under
this second head of our invention as above described we are enabled to secure all
the advantages appertaining to the hereinbefore first described arrangement.
Further, our invention may also be modified to form a compound refrigerating
filter, with an ice chamber or receptacle. Under this third head of our invention
we construct a refrigerating filter on the lines generally as last above described
but under this last modification one of the side compartments is completely
isolated and is provided with a tap for emptying; and in this compartment, ice,
ice and salt, or any freezing mixture or mixtures or substance or substances is or
are placed so as to ensure thus keeping the filtered water in a perfectly refrigerated
condition. This ice chamber may also be utilized for cooling aerated water,
wine &c. So also as a "safe" for milk, butter, meat, fruit, articles of food
generally and potable liquids.
Dated this 3rd day of May 1893.
JAMES
STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Apparatus and Methods for Filtering Water and
other Liquids.
We, GEORGE WEDDELL, 20, West Grainger Street, Newcastle-on-Tyne,
Chemist, and JOHN CLARK, 11, Melbourne Terrace, York, Commercial Traveller,
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, reference being also had to the accompanying two sheets of drawings.
in which :-
Figures 1 and 2 are respectively a vertical section and plan of one form of our
invention and Figures 3, 4, 5 respectively a vertical section, plan, and a transverse
section on line X-of another application of our said improvements.
Like letters of reference denote similar or corresponding parts in the several
views.
In accordance with our invention we employ a suitably shaped enclosing vessel
of glass, earthenware, china, slate, marble, enamelled metal or any other suitable
material Figures 1 and 2. Said vessel is divided longitudinally into three
compartments for holding respectively the unfiltered water U, the filtering
apparatus and material or medium M and the filtered water F. The divisions are
formed by two partitions A, B, the first separates the unfiltered water U from the
filtering apparatus and material or medium M and preferably does not extend
quite to the bottom of the main enclosing vessel: when however that is the case it
is provided with perforations a through which water can freely pass. The second
partition B reaches to the bottom of the main enclosing vessel but not to the top
and divides the filtering apparatus and material or medium M from the filtered
water F.
The arrangement of the filtering compartment is as follows:-Near the bottom
is a movable perforated grid b, slightly raised on a ledge or on a support extending
from the lower end of the vessel so that water can flow freely underneath it. On
said grid any suitable filtering material or medium M is placed and. is held in
position by another perforated grid cat the top. The filtering material is thus
arranged so that it can be easily examined and when necessary renewed.
The mode of filtration is as follows:-The unfiltered water is fed either
mechanically or automatically by a floating ball tap into the first compartment U,
it passes underneath the division A into the second compartment, and then ascends

page_text: by gravitation through the bed of filtering material or medium M and falls over
the edge of the second partition B into the third compartment reserved for filtered
water F. A tap is placed at d in the third compartment F for drawing off any
of the filtered water and another in the first compartment U to draw off the
unfiltered to allow the filtering material M to be exposed to the air so that the
impurities may be thus oxidised and destroyed.
Our invention may also be applied with advantage to the construction of a
refrigerating filter Figures 3, 4 and 5. Under said application the device would
consist of a main enclosing vessel constructed of earthenware, glass, marble, china,
slate, enamelled metal, or any other suitable material, divided by two partitions C, C,
fixed at one end but which do not extend to the bottom of the main enclosing
vessel, allowing the water to pass underneath. These two last referred to
partitions C, C, are connected with a third partition D extending across the
filtering vessel at one end. Said third partition D is secured at the bottom of
the vessel but having openings a at the bottom for the passage of the water to
the filter bed M. The filtering material or medium is placed in the compartment
formed by the cross partition D and packed in the same manner as in the case of
the hereinbefore first described application of our said invention. Now, in further
reference to our invention the water is admitted into either side of the filtering
vessel and occupies both sides of the centre compartment F and also flows
underneath the middle compartment and after passing through the filter bed M by
gravitation flows from it by a suitable opening into the middle compartment which
thus contains the filtered water surrounded at the sides and bottom by fresh cold
water U from the main service and it is thereby kept at a low temperature.
A tap is placed at one side of the vessel, connected with a waste pipe to allow the
water to be run off at frequent intervals for oxidation and inspection of the
filtering material. Under this second head of our invention as above described
we are enabled to secure all the advantages appertaining to the herein before first.
described arrangement.
Further our invention may also be modified to form a compound refrigerating
filter, with an ice chamber or receptacle. Under this third head of our invention
we construct a refrigerating filter on the lines generally as last above described
but under this last modification one of the side compartments is completely isolated
and is provided with a tap for emptying; and in this compartment, ice, ice and
salt, or any freezing mixture or mixtures or substance or substances is or are
placed so as to ensure thus keeping the filtered water in a perfectly refrigerated
condition. This ice chamber may also be utilized for cooling aerated water,
wine &c. so also as a "safe" for milk, butter, meat, fruit articles of food generally
and potable liquids.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
(1.) The particular arrangement, shown and described with reference to Figures 1
and 2, of the partitions A and B, perforated plates b, c, and disposition of the
filtering medium M as and for the purposes specified.
(2.) The particular arrangement shown and described with reference to Figures 3,
4 and 5 of the partitions C, C, and cross partition D with perforated plates b, c and
filtering medium M whereby the filtered water is maintained at a low temperature
as herein set forth.
Dated this 9th dow of Echow 1904
BENJAMIN T. KING,
163, Queen Victoria Street, London, E.C., Agent for Applicants.