Year: 1896

page_text: ARTHUR HOPE CONSTABLE, "The Quarry," Penshurst, Kent, do hereby declare
the nature of this invention to be as follows:---
At a convenient position, just above the outfall of sewer, two underground water-
tight tanks (of varying dimensions according to the volume of sewage to be
treated) are constructed, the upper portions of both having a division or tongue in
the centre at right-angles to the line of sewer.
Between these tanks, a chamber or manhole is formed, and so arranged that a
small overshot wheel (or in some cases a turbine) a receptacle for lime, and an
elongated screw, are fixed to run on the necessary spindles and bearings.
The crude sewage coming into the first tank has to pass downwards under the
division or tongue to the bottom part of tank, and rise again on the other or lower
side, leaving the solids at the bottom.
When the water in tauk is level with the inlet drain or sewer- certain quantity
(regulated by the height of syphon) is discharged at intervals (regulated by the
time the flow of sewage takes to re-fill tank) by a syphon working automatically
over the water wheel: this drives by means of an endless belt a revolving brush
inside the lime receptacle, which discharges continuously (as long as the syphon
is discharging and turning the water wheel) a certain amount of quicklime into
the stream of water as it leaves the water wheel.
The elongated screw is placed in a suitable channel, below where the lime falls
into the water, revolves rapidly by the action of the water passing it, and mixes
the lime and water efficiently.
This now runs into the second tank, where the lime acting on the water precipi-
tates the remaining solids held in suspension to the bottom of the tank as the
water passes down under the division or tongue, and the water rising again, is
discharged a practically pure affluent.
The solids have to be taken from the tanks periodically as required, and are
valuable as a manure.
Where the land below the second tank has a good fall--this is done by a syphon
specially arranged with charging lank and the necessary cocks, but if the
surrounding land is flat it has to be pumped out.
Dated this 26th day of August 1896.

page_text: ARTHUR HOPE CONSTABLE, Builder, "The Quarry," Penshurst, Tonbridge, Kent,
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:
At a convenient position, just above the outfall of sewer, two underground water-
tight tanks (of varying dimensions according to the volume of sewage to be
treated) are constructed, the upper portion of both having a division or tongue in
the centre at right angles to the line of sewer.
Between these tanks, a chamber or manhole is formed and so arranged that a
small overshot wheel (or in some cases a turbine) a receptacle for lime, and an
elongated screw, are fixed to run on the necessary spindles and bearings.
The crude sewage coming into the first tank has to pass downwards under the
division or tongue to the hottom part of tank, and rise again on the other or lower
side, leaving the solids at the hottom.
When the water in tank is level with the inlet drain or sewer--a certain quantity
(regulated by the height of syphon) is discharged at intervals (regulated by the
time the flow of sewage takes to re-fill tank) by a syphon working automatically
over the water-wheel; this drives by means of an endless belt a revolving brush
inside the lime receptacle which discharges continuously (as long as the syphon is
discharging and turning the water wheel) a certain amount of quicklime into the
stream of water as it leaves the water wheel.
The elongated screw is placed in a suitable channel below where the lime falls
into the water, revolves rapidly by the action of the water passing it, and mixes
the lime and water efficiently.
This now runs into the second tank, where the lime acting on the water precipi-
tates the remaining solids held in suspension to the, bottom of the tank as the
water passes down under the division or tongue, and the water rising again, id
discharged a practically pure affluent.
The solids have to be taken from the tanks periodically as required, and are
valuable as a manure.
Where the land below the second tank has a good fall-this is done by a syphon
specially arranged with charging tank and the necessary cocks, but if the
surrounding land is flat it has to be pumped out.
Referring to the drawings, A and B are the two tanks, C and D the divisions
in tho centre: E shows chamber or manhole in which the over-shot wheel F is
arranged, together with the receptacle for lime G, and the elongated screw H.
The inlet drain is shown at J, and the syphon at K. Inside the lime receptacle
is fixed the revolving brush L. M is the charging Tank for starting syphon which
empties the solids from Tanks A and B.
N the pipe for filling same with liquid (to charge Syphon) from Tank A.
OP the syphon pipes for discharging sludge.
Q the sludge discharge pipe.
RS pipes for drawing off liquid before the sludge is syphoned out.
T the affluent pipe.
U the safety over-flow pipe.
Y is the Elan Valve which is closed to chariza auubon and released to stant com

page_text: Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is:-
1. Construction & general arrangement of lank & apparatus as described.
2. The automatic application of the lime.
3. The inexpensive and inoffensive method of emptying the precipitated solids
from the tanks.
4. The combined action by which the purity of the affluent discharged is obtained.
Dated this 20th day of May 1897.
ARTHUR HOPE CONSTABLE.