Improvements in Water Filtering Apparatus.
Year: 1891

page_text: Date of Application, 2nd Sept., 1891
Complete Specification Left, 31st May, 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Water Filtering Apparatus.
I WILLIAM CREAM HENDERSON of Braeside, Lordship Lane, in the County of
Surrey, Gentleman do hereby declare the nature of this invention to be as
follows:-
This invention has reference to filtering apparatus especially designed for
filtering rain water and removing the soot and other impurities it contracts in its
fall or collection.
According to one form of my invention adapted for domestic use I surround the
end of the rain water stack pipe or like pipe with a filter chamber to the upper
part of which I connect a supply pipe for the carrying off the filtered water I also
pass through this chamber to the stack pipe an overflow pipe and to the bottom
of the filter chamber I supply a flush tap which serves for drawing off sediment
and in frosty weather to empty the filter.
Across the lower part of the filter chamber is a reticulate diaphragm on which
is supported graded filtering material suitable for the purpose such as coarse
sponge supporting coarse sand on which rests fine sand and the contaminated rain
water coming down the stack pipe passes at the bottom into the filter chamber and
then by ascension up through the filter to the supply pipe for distribution or
storage.
Dated the 2nd day of September 1891.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Water Filtering Apparatus.
I, WILLIAM CREAM HENDERSON of Braeside, Lordship Lane, in the County
of Surrey, Gentleman, 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 has reference to filtering apparatus especially designed for
filtering rain water and removing the soot and other impurities it contracts in its
fall or collection.
According to one form of my invention adapted for domestic use, I surround
the end of the rain water stack pipe or like pipe with a filter chamber to the
upper part of which I connect a supply pipe for the carrying off the filtered
water also pass through this chamber to the stack pipe an overflow pipe and to
the bottom of the filter chamber I supply a flush tap which serves for drawing off
sediment and in frosty weather to empty the filter.
Across the lower part of the filter chamber is a reticulate diaphragm on which
is supported grated filtering material suitable for the purpose such as coarse sponge
supporting coarse sand on which rests fine sand and the contaminated rain water
coming down the stack pipe passes at the bottom into the filter chamber and then
by ascension up through the filter to the supply pipe for distribution or storage.

page_text: with a portion of the tray and the whole of the filtering material and cover a
removed. a indicates a chamber preferably of metal, such as zinc or galvanized
or protected iron, and having a removable cover a'. b represents the lower end of a
pipe, which may be the bottom of the stack pipe, receiving the drainage of a roof.
bare openings by which the water passes into the sediment chamber a².
3 is a frame on which rests the screen (either this screen or the screen 66 may
if desired be conveniently made in two pieces for facility of application and
removal). On this screen rests a series of sponges 6. Above these sponges is
another reticulate screen 66 supported by framing and upon this is supported
filtering material such as coarse sand, fine sand, charcoal or other suitable material,
graded in suitable degrees of fineness.
e is an outlet, capable of being connected with any suitable channel for delivery
to a storage cistern or other place is another channel located somewhat higher
than the outlet c and provided for the purpose of its serving as an overflow for
excess of rainwater, that may occur in the event of a storm, greater than the
capacity of the filter properly to deal with.
e is an opening closable by tap e' for the purpose of enabling the chamber a² to
be flushed and cleared of sediment by direct run through of the rain water.
In operation, the fouled rain water passes down the stack pipe b into the sediment
chamber a² thence by ascension through the screen the sponges thereon, the
screen 6 and the superposed filtration material, and enters purified the chamber a
from whence it is allowed to flow or is drawn off by the outlet pipe c, the inner end
of which is here shewn turned downward so as to take its supply from below the
level of the water surface therein.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, or arrangement and use, of a water filtering apparatus, com-
prising means of supply of water, as from the stack pipe from a house roof, a
chamber for sediment, divided from the filtered water chamber, by sponges, sand,
or other suitable filtering material, and reticulate screens, through which the water
filters by ascension; and means of draw off, overflow and access for cleansing, all
as and for the purpose set forth.
2. The arrangement, or combination and use of the parts of a water filtering
apparatus, especially adapted for cleansing rain water, as set forth.
Dated the 31st day of May 1892.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.