Improvements in the Construction of Vertical Tanks or Receptacles for the Precipitation of Sewage and for like purposes.
Year: 1892

page_text: Date of Application, 30th Dec., 1892
Complete Specification Left, 27th Apr., 1893-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Vertical Tanks or Receptacles
for the Precipitation of Sewage and for like purposes.
We EDWARD WILLIAM IVES of Victoria Chambers, Saint Peter's Church
Yard in the Town and County of Derby, Civil Engineer, and CHARLES
THEODORE LYTTELTON BRISTOW of 35 Onslow Road, Richmond in the
County of Surrey, Civil Engineer, do hereby declare the nature of this invention
to be as follows:-
The object of our invention is to provide a tank or receptacle in which sewage
or the like may be received for the purpose of precipitating the more solid portions
or sludge and allowing the liquid portion or effluent to pass away in a comparatively
clear form and these tanks or receptacles are of such a nature that they are entirely
enclosed so that no offensive smell is emitted and may be placed in the midst of a
populous district or on a bill side or in the bed of a river without being objection-
able and moreover the passage of sewage through them may be constant, it not
being requisite to stop the working of one for the purpose of removing the sludge
or deposit or in the event of local floods.
Our tanks may be used :-either with or without chemicals and in constructing
one of them we provide an outer cylindrical casing of metal, brickwork or other
suitable material this cylinder or receptacle tapering or being of the shape of an
inverted cone at its lower part and terminating in a bulb or sump from which the
sludge or deposit may be pumped or sucked-the top of this outer tank is covered
and sealed except as to the inlet for sewage pipe.
Within and concentric with this outer tank we form another cylindrical chamber
of metal, timber or other material having a space all round between its outer wall
or side and the inside of the main tank, the bottom of this is at about two thirds
the depth of the outer tank and is turned inwardly and upwardly forming a cone
shaped funnel passing up and through its own central area after the fashion of a
hollow kettle. The top is dome shaped and closed and may be bent or flattened at
the centre of the dome for the more equal distribution of the sewage which falls
upon this point from the inlet terminating immediately over it.
Concentric with this inner cone and between it and the wall of the inner cylinder
is another smaller cylinder cill or open chamber.
The mouth of the inner cone rises above this innermost chamber but is always
below the normal level of the sewage in the main tank. Outlets for the effluent
are provided near the top of the first inner closed chamber immediately under the
dome.
The sewage enters the main chamber through inlet in its dome or cover and falls
upon the top of the inner chamber passing all round and down the sides between
the two and the sludge or more solid portion falling by precipitation to the sump
or contracted lower portion. An arm or arms at the foot of the inner chamber
may be provided to distribute the upward action of the sewage under treatment
more evenly.
The liquid portion rises through the inner cone and falls over a turned over
portion or lip into the small innermost chamber, passes down and under the bottom
thereof rising in the first inner chamber to the level of the effluent outlet through.
which it continues its progress to the outfall or otherwise.
The sludge may be pumped or sucked up through a pipe passing down between
the inner and outer chambers.
L
1
1000
POPPLEWELL & Co.,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Vertical Tanks or Receptacles
for the Precipitation of Sewage and for like purposes.
We EDWARD WILLIAM IVES of Victoria Chambers St. Peter's Churchyard
Derby in the County of Derby Civil Engineer and CHARLES THEODORE
LYTTELTON BRISTOW of 35 Onslow Road Richmond in the County of Surrey
Civil 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:-
The object of our invention is to provide a vertical tank or receptacle within
which sewage or the like may be received for the purpose of precipitation-and-of
-such-a-construction that whilst the more solid portions will sink into a sump or the
like at the bottom of the tank so as to allow of its being periodically pumped up
or raised through a separate channel or pipe or by any suitable means, the effluent
or comparatively clear liquid may continually pass away into and along the usual
drainage system.
These tanks, receptacles or catch pits are of such a nature that they are entirely
enclosed so that no offensive smell is emitted and they therefore may be placed at
intervals in a line of drainage in the midst of a populous district without being
objectionable and moreover the flow of sewage through them may be constant as it
is not necessary to close one or divert the sewage through a byc pass for the
purpose of removing the sludge or deposit unless a portion of the same is of so
solid a form as to be incapable of being raised by the means we suggest hereafter.
Our tanks may be used either with or without chemicals and in further
describing them we shall refer to a drawing hereto attached which represents a
vertical section of one of the said tanks and to the letters of reference thereon.
In constructing our tanks or catch pits we provide an outer casing of metal,
brickwork or other suitable material and preferably cylindrical in shape such
as A tapering at its lower part B so as to assume the shape of an inverted cone or
its equivalent and terminating in a sump or the like C'from which the sludge or
deposit may be withdrawn as hereafter described.
The top of the outer case or tank is covered and sealed except as to the inlet for
sewage S manhole M for obtaining access when necessary (which may be usually
also sealed) and outlet pipe N for sludge.
Within this outer tank or case we form a second chamber such as D having a
space E all round between its outer wall or boundary and the inside of the main
receptacle A the bottom of this inner receptacle, which may be suitably supported
in the main part of the outer receptacle, is turned inwardly and upwardly forming
a cone shaped funnel F passing up near to and surrounding the central axis of the
inner cylinder after the fashion of a kettle through the centre of which the flame
of a fire or the like is arranged to pass.
The top of this inner chamber G is closed and domed as shown and may be
flattened slightly at centre where the incoming sewage from inlet S falls.
Concentric with this innermost cylinder or funnel F and between it and the wall
or side of the chamber D there may be another smaller cylinder or the like such
as H.
The mouth of the inner cone or funnel F rises nearly to the top of the inverted
chamber H and discharges therein but is below normal level of sewage in main
tank A. Outlets J for the effluent are provided near the top of the chamber D.
The sewage enters the main chamber through pipe and inlet S and falls upon
dome or cover G of inner chamber passing round and down between outside of D
and inside of A (and in direction shown by arrows) the sludge and more solid
portions being precipitated towards the contracted portion and sump C.

page_text: An arm or arms K may be provided at this lower part of the chamber for
distributing the sewage more evenly on its upward passage.
The liquid now rises through funnel F and falls over the lip at its summit into
the small innermost chamber H passes down and under the bottom thereof and
rises in the first inner chamber D to the level of the effluent outlets J through
which it continues its progress to the main outfall.
The sludge may be raised by suction through a suitable pipe N or by other
means and removed in carts or the like.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
1. A temporary receptacle or depositing tank for sewage or the like having an
outer case such as A enclosing an inner receptacle such as D surrounding a
funnel or upward shaft such as F the upper part of which is surrounded by a
smaller concentric chamber such as H through the whole of which the sewage may
flow the outer receptacle being continued downwardly and contracted to form a
sump in which the sludge or deposit may accumulate the whole substantially as
herein before described with reference to the accompanying drawing.
2. The improved catch pit or depositing receptacle for sewage substantially as
hereinbefore described and as illustrated by the accompanying drawing.
Dated this 23rd day of March 1893.
POPPLEWELL & Co.,
Agents for the Applicants.