Improvements in and connected with Apparatus for the Filtration of Rain-water and other Liquids.
Year: 1894

page_text: Date of Application, 5th Nov., 1894-Accepted, 5th Jan., 1895
COMPLETE SPECIFICATION.
Improvements in and connected with Apparatus for the Filtration
of Rain-water and other Liquids.
I, JOHN CLARK, of 10, Huntingdon Place, Tynemouth, in the County of
Northumberland, Filter 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 :-
This invention relates to apparatus designed chiefly for filtering rain-water but
it will be obvious that it could also be used and is suitable for filtering any other
water or liquid.
It is well known that rain-water, which in the first instance is extremely pure,
collects from the air, and on reaching the earth a quantity of both animal and
vegetable impurities, which impurities, however, it is possible to extract by means
of proper filtration leaving the water again quite pure and wholesome.
In order to carry out the object of this, my said invention I construct a water-
tight vessel or jar, hereinafter called the inner vessel or filter, which vessel may be
composed of either wood, stone, glass, earthenware, enamelled or galvanised metal
or other suitable material as described with reference to my Patent of prior date
hereto granted to G. Weddell and numbered and dated 6208/84. In the said jar I
place first a perforated dish or plate having an annular rim upon which it stands on
the bottom of the inside of the jar or vessel, such annular rim forming of course a
compartment or cavity between the perforated plate and the bottom of the vessel
the said compartment serving for the reception of the newly filtered water or the
said perforated plate may rest upon an annular interior rim or on lugs. On the
top of the said perforated tray or dish I place a layer of finely powdered filtering
medium and next above this a layer of a coarser medium and again on the top of
this a layer of a still coarser medium and on the top of the latter I place a flat
perforated lid fitting the jar or vessel like a piston head fits its cylinder and finally
over the top of all I dispose a suitable cover which may consist of either any of the
rigid substances above mentioned as being suitable materials for the filter or vessel
itself; or it may be made of any suitable flexible material such as asbestos cloth,
canvas, felt,, or the like and may be either tied, wired or otherwise similarly fixed
over the jar after the manner of a preserved fruit jar-cover.
It will be seen that between the lid and the cover just described there is a
considerable space equal to about three eighths of the inside capacity of the
vessel, this space will always be full of the liquid to be filtered so long as the
liquid in the outer vessel does not fall below the level of the cover of the inner
vessel.
A small hole in the filtering chamber below the perforated plate above referred
to permits of the end of a pipe or tap being inserted therein, by means of which the
filtered water is drawn off.
I also construct an outer containing vessel or receptacle for the liquid to be
filtered of any suitable material such as is above suggested might be used in the
inner vessel; or any ordinary rain-water tub, bucket or other like receptacle may
be used, its only object being to form a container for the liquid and the inner
vessel. The outer vessel would also have a hole packed or otherwise rendered
water-tight for the purpose of admitting the pipe or tap above referred to employed
for drawing off the filtered water.

page_text: In the accompanying drawings Fig. 1 illustrates by a central vertical section my
improved filtering apparatus and Fig. 2 a plan view of the same.
Like letters refer to corresponding parts throughout the drawings, in which
A is the inner vessel, B is the outer vessel and C is the outlet pipe or tap.
Referring to the inner vessel, a is the annular rim attached to the perforated
plate b, and c, d, e are the filtering media, f is the perforated lid, shown fixed under
lugs on the inside of the vessel and g is the cover shown, in this case, of flexible
material secured by a cord or equivalent, but, as previously stated, a perforated
cover of earthenware or the like may be employed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same may be performed, 1 declare that what
I claim is :-
In an apparatus designed for the filtration of rain-water or other liquids, the
combination with an inner vessel or filter containing a perforated plate, the
filtering media, an internal lid and an external cover of an outer vessel provided
with a direct pipe connection between the internal filter and the outlet for filtered
water, the whole constructed, arranged and acting substantially as and for the
purposes specified.
Late the 6th dov
BENJAMIN T. KING,
163, Queen Victoria Street, London, E.C.,
Patent Agent to the said John Clark.