IMPROVEMENTS IN APPARATUS FOR FILTERING RAIN WATER
Year: 1885

page_text: JOHN WILLIAM SAWYER Sanitary Engineer 97, Clapham Park Road London S.W.
in the County of Surrey, do hereby declare the nature of my invention for
IMPROVEMENTS IN APPARATUS FOR FILTERING RAIN WATER, to be as follows:
My Invention relates to certain improvements in the construction of apparatus
employed in filtering rain water as it falls from the roofs of houses and other
buildings, and to facilitate the removal of all accumulated impurities therefrom by
any inexperienced person.
The outer case of the filter can be made in various shapes to suit the positions
in which it is intended to fix it. I provide the outer case with six orifices or
inlets and outlets three of which are on the top of the filter, one leading from
"stack pipe" (to lower end of which the filter is attached) through centre to lower
perforated plate and communicates with the sediment chamber at the bottom, also
one on each side of centre orifices for the purpose of charging the filter with coke
(pulverized) or any other suitable filtering medium, through which the water is
forced in accension by the superincumbent weight of the rain water in the "stack
pipe " and finds its exit through another outlet immediately above the upper
perforated plate into storage tank or cistern. The internal arangements of the
filter consists of two perforated diaphragms, one situate near top of filter and which
keeps down the purifying medium as the pure water passes through same, and the
other is placed over the sediment chamber in an inclined position, to render more
easily and effectually, the removal of the medium whenever necessary for renewal,
which discharges itself immediately opposite the lower end of perforated plate. The
sediment chamber has also an outlet for the withdrawal of all collected impurities
which is fitted with cap or lid as in the other orifices. I can construct the filter in
zinc copper, sheet or cast iron, earthenware or any other suitable material.
ב.
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page_text: I, JOHN WILLIAM SAWYER, of 97 Clapham Park Road, in the County of Surrey,
Sanitary Engineer, do hereby declare the nature of my said invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
My invention relates to improvements in filters or apparatus intended chiefly to
clarify rain water as it descends from the roofs of houses and other buildings so
that the water can before it runs to a tub, cistern, or other reservoir be rendered
clear and into a state fit for domestic and other purposes for which such may be
suitable.
In order that my invention may be the better understood I now proceed to
describe the same in relation to the drawing hereunto annexed, which represents a
sectional elevation of my filter or clarifier, reference being had to the letters marked
thereon.
t
The apparatus, as shewn in the annexed drawing consists of an outer casing A
with lugs B B by which it can be attached to a wall or any building.
I provide my filter with five orifices or inlets and outlets numbered 1. 2. 3.
4 and 5.
N° 1, is connected to the stack pipe or supply pipe, whereby the unfiltered water
is conveyed to lower or sediment chamber C, and then passes in ascension through
a perforated diaphragm D, into the filtering or purifying medium_E, and finds its
exit by the upper perforated plate or diaphragm F and clarified water outlet 3, into
cistern or other receptacle ready for use.
No 2 is the inlet conveniently placed at top of purifier or filter through which
the filtering material E is charged, but I may provide two or more inlets
conveniently placed for this purpose.
To remove the foul medium after long use, the cap on outlet 4 is removed and
water poured into inlet 2, thus washing the contaminated medium out of filter, and
which can be replaced by a fresh charge as aforesaid. The outlet 5, is for the
purpose of easily removing the collected impurities which are carried by the flow
of the water, and deposited in the lower chamber C. I provide the orifices or
inlets and outlets with a suitable cap, or stopper, which is capable of being removed
at will.
I construct my filter in various shapes or forms to suit the position into which it
is intended to fix it, and can manufacture same in earthenware, sheet or galvanized
iron, enamelled iron, zinc, or any other suitable material,
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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:-
1. The construction and arrangement of the filter, whereby I dispense with all
loose parts in connection therewith.
2. The facility for cleansing the filter without interfering with its action, and
for charging the purifying medium, and withdrawing same whenever necessary by
any inexperienced person.