IMPROVEMENTS IN WATER FILTERS
Year: 1885

page_text: I GEORGE WILSON, of 33 Hanbury Road, Clapham, London, in the County of
Surrey, Mechanical Engineer, do hereby declare the nature of my invention for
IMPROVEMENTS IN WATER FILTERS to be as follows:-
My invention relates to an improved construction of Filter whereby I dispense
with loose pieces within it while facilitating the removal of accumulated impurities
and the renewal of the filtering medium, and obtain, amongst other advantages,
simplicity of construction and economy in manufacture.
I propose to construct my filter with two diaphragms forming chambers, one
chamber for the unfiltered water, another for the filtered water and a third for the
filtering or purifying medium.
I provide the unfiltered water chamber with a tube descending to the bottom of
the filter and having perforations near its lower, end to allow the unfiltered water
to pass therefrom into the chamber containing the filtering or purifying medium,
through which it will ascend into the filtered water chamber. This tube acts as a
sediment chamber from which the sediment can be removed by the simple with-
drawal of a cork or plug from its lower end.
I also provide the filtered water chamber with a pneumatic tube which passes
through the unfiltered water chamber to the top of the filter.
may
In the bottom of the filter I form openings or orifices through which I
charge the purifying chamber with the filtering medium and withdraw it for
cleansing or renewal. I may close these openings with corks or plugs of any
suitable material.
I also provide the filtered water chamber with a suitable cock and cover the
filter with a lid of earthenware or any other suitable material.
I may make the case of my Filter, together with its diaphragms and tubes in
one piece of Earthenware, or in sections of enameled iron, or other suitable
material, permanently connected together so that there may be no leakage between
joints.

page_text: I, GEORGE WILSON, late of 33 Hanbury Rd Clapham, but now of 67 New Road,
Rotherhithe, both in the County of Surrey, Mechanical Engineer 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:-
My invention relates to an improved construction of filter, whereby I dispense
with loose pieces within it, while facilitating the removal of accumulated impurities,
and the renewal of the filtering medium, and obtain, amongst other advantages,
simplicity of construction, and economy in manufacture.
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, reference being had to the letters marked
thereon.
I construct my filter with two diaphragms, forming three chambers A, B and C,
one chamber A, for the unfiltered water, another, B, for the filtered water, and a
third, C, for the filtering or purifying medium.
Leading from the unfiltered water chamber A, to the bottom of the filter, I form
a tube D, having perforations near its lower end, to allow the unfiltered water to
pass therefrom into the chamber C, containing the filtering or purifying medium,
through which it will ascend into the filtered water chamber B, through perfora-
tions in the diaphragm between the chambers B and C. This tube D acts as a
sediment chamber, from which the sediment can be removed by the simple with-
drawal of a cork or plug E from its lower end, or it may be filled with loose
filtering medium, such as coke, and thus made to act as a preliminary filtering
chamber.
From the chamber B to the top of the filter, I form a pneumatic tube or
passage F, in order to preserve atmospheric equilibrium.
In the bottom of the filter I form openings or orifices G, through which I may
charge the purifying chamber C with the filtering medium, and withdraw it for
cleansing and renewal. I close the openings G and E with corks or plugs of any
suitable material. I provido the filtered water chamber B with a suitable
cock H, and cover the filter with a lid of earthenware or any other suitable
material.
L
I may make the case of my filter, together with its diaphragms and tubes, in one
piece of earthenware or in two or more parts of enamelled iron or other suitable
material, which are permanently fastened together, so that there may be no leakage
between the joints.

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
The construction of a filter in one piece or permanently united pieces, in the
form of three chambers, with a communicating tube acting also as a sediment
chamber or preliminary filtering chamber, and provided with orifices for
withdrawal of sediment and renewal of filtering medium, and with suitable
cock, atmospheric equilibrium passage and lid, substantially as and for the
purposes specified.