Improvements in or connected with Domestic Filters.
Year: 1893

page_text: Date of Application, 10th May, 1893
Complete Specification Left, 12th Feb., 1894-Accepted, 21st Apr., 1894
9.11
.1.
* PROVISIONAL SPECIFICATION.
Improvements in or connected with Domestic Filters.
I, BENJAMIN MACKAY, of Windmill Lodge, Minchinhampton, Stroud,
Gloucestershire, Commercial Traveller, do hereby declare the nature of this
invention to be as follows:-
This invention relates to domestic filters, and consists of, say, four long tubės
with reduced necks or fillets for supporting holed or meshed discs, and having
bottom chambers for collection of sediment, and also upper chambers for sand,
carbon, or other agent as the filtering medium. The tubes are in connection- from
top and bottom respectively by flexible or other tubes, and the upper ends or their
covers have check, or air tubes as vents to maintain the flow of water upwardly in
all the tubes.
As an example of my invention, I make, say, four clear glass tubes of equal
sizes provided with contracting ring like impressions at a short distance from the
bases, and with the bottoms closed. On the fillets, I lodge perforated or meshed
discs as supports to layers of gravel, sand, or other material of different degrees of
fineness. The tubes have spouts near the upper and lower ends on opposite sides
for connection of flexible tubes, and the covers have syphon tubes projecting above,
the ends being loosely charged with wool, medicated or otherwise, for filtering the
inflowing air.
·
The water to be filtered is led to the lower part of the first tube of the series,
and after rising up through the filtering media passes by the upper spout, and from
thence to the lower spout of the adjoining tube, and so on for the series.
I purpose using gravel and sand in the first two tubes, and charcoal, or other
carbonaceous material in the other two tubes, but auy nu nber of tubes can be used,
and the first water entry chamber of each tube has a tap or draw-off for the
removal of sludge, or impurities at intervals.
By reversing the inlet of water, the tubes can be cleansed without necessitating
renewal of the filtering media.
I have referred to glass, that substance being preferable, but earthenware,
pottery, or other material can be moulded and prepared in lieu therefor.
Dated this 10th day of May 1893.-
H.
GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Benjamin Mackay.
COMPLETE SPECIFICATION.
Improvements in or connected with Domestic Filters.
I, BENJAMIN MACKAY, The Windmill Lodge, Minchinhampton, Stroud,
Gloucestershire, 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:-
This invention relates to domestic filters, and is quite a new departure from the
present systern.
The filtration is upwards, and the whole process is visible to the eye, each stage
being under perfect control.

page_text: The filtering material is put into glass tubes, each having a chamber at the lower
end in which all matter in suspension is retained, and can be drawn off as often as
may be necessary by means of a tap, hence the water does not pass through the
:sediment extracted out of former charges.
The water,.thus perfectly pure passes. into a glass tank from which it may
be drawn as required. Here again the quantity of filtered water is seen at a
.glance.
The water is thoroughly aërated and all the air is filtered through sterilised
cotton wool.
As an example of my invention and as indicated by the annexed drawing, I
arrange within a frame A clear glass tubes B, of equal sizes, and provide them with
contracting ring like impressions C at a short distance from the bases and with the
bottoins D. closed by a tap E.
•
On the fillets. I lodge perforated or meshed discs Fas supports to layers of
carbon, gravel, sand; or other material G of different degrees of fineness.
The tubes B B have nozzles near the upper ends as at H H, and other
nozzles. II at the lower ends on opposite sides to H H for connection of flexible
tubes JJ, and the covers K have vent tubes L projecting above, the ends
being loosely charged with wool, medicated or otherwise for filtering the
inflowing air.
The water to be filtered is led by pipe M to the lower part of the first tube B
of the series from a cistern N and after rising up through the filtering media G
passes by the upper nozzle H and from thence to the lower nozzle I of the adjoining
tube, and so on for the series, of which two only are shown, the water ultimately
flowing into the reservoir P to be drawn off by the tap Q.
In filtering large quantities of water, I purpose using gravel and sand in the
first two tubes, and charcoal or other carbonaceous material in the other. two
tubes, but any number of tubes can be used, and the first water entry chamber
of each tube has a tap or. draw off for the removal of sludge or impurities at
intervals.
By reversing the inlet of water, the tubes can be cleansed without necessitating
renewal of the filtering media.
I have referred to glass, that substance being preferable, but earthenware,
pottery or other material can be moulded and prepared in lieu thereof.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what 1
claim is :-
1. The improvement in or connected with domestic filters, as described and
substantially as represented on the annexed drawing.
2. Constructing or arranging a domestic filter of a tall tube having upper part
charged with filtering media, and an air inlet, the tube being of reduced diameter
with screen, and having an up flow from head of water, all as described.
3. Connecting a series of tall filtering tubes by pipes at top and bottom
respectively to ensure flow of water through all of the tubes of the series in an
upwardly direction for filtering purposes.
The 10th day of February 1894.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said Benjamin Mackay.