Improvements in the Construction of Vertical Tanks or Receptacles for the Precipitation of Sewage and for like purposes.
Year: 1893

page_text: Date of Application, 9th Feb., 1893
Complete Specification Left, 17th Mar., 1893-Accepted, 10th June, 1893
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Vertical Tanks or Receptacles
for the Precipitation of Sewage and for like purposes.
EDWARD WILLIAM IVES, Civil Engineer Victoria Chambers, St. Peter's Church-
yard Derby, CHARLES THEODORE LYTTELTON BRISTOW 18 St Alkmund's
Churchyard, Derby 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 portion
and the 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
hillside or in the bed of a river without being objectionable 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 tank tapering or being of the shape of an inverted cone
at its lower part and terminating in a bulb or sumph from which the sludge or
deposit may be withdrawn, the top of this outer tank is covered or sealed except as
to the inlet for sewage, manholes and effluent outlets, within this outer tank or
cylinder we form one or more cylindrical chambers of metal or other material
having spaces between each of them for the sewage to flow and of such diameter
or diameters as will best regulate the flow of the sewage and to assist the
precipitation of the sludge or solid matter, the top of these inner cylinders are
closed with a cover of metal or other material formed so as to equally distribute the
sewage which falls upon this cover from the inlet for sewage which is immediately
over it. Outlets for the effluent are provided near the top of the inner chamber
and immediately under the cover to same and are always placed below the normal
level of the sewage in the main chamber or tank.
The sewage enters the main cylinder or tank through inlets in its top or cover
and falls upon the top or cover of the inner cylinders which distributes it equally
all round the same and passing down between these inner cylinders and the outer
main cylinder or tank then up one of the inner chambers and down again if required
according to the flow required, the sludge or solid portions falling by precipitation
to the sumph or contracted lower portion of the main tank, arms are placed at the
bottom of the inner chambers to regulate and distribute the upward action of the
sewage more evenly.
The lighter portion of the sewage rises through the inner chamber or chambers
and falls over an effluent overflow basin and is conducted by pipes to the outside of
the main tank and away.
The sludge may be withdrawn up through a pipe communicating with the bottom
of the main tank or cylinder from the sumph there placed, without stopping the
flow or working of the sewage.
nd thin 9th dev of February 1893.
EDWARD WILLIAM IVES.
CHARLES THEODORE LYTTELTON BRISTOW.

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 18 St. Alkmund's Churchyard, Derby aforesaid, 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 tank or receptacle in which sewage or
_the_like-may be received for the purpose of precipitating the more solid portions
and the 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
hillside or in the bed of a river without being objectionable and moreover the
passage of sewage through them may be constant, it not being requisite to stop the
working of a tank for the purpose of removing the sludge or deposit or in the event
of local floods.
In order that our invention may be the more readily understood we have caused
to be annexed to this Specification a sheet of drawings the figures and letters of
reference marked upon which will be hereafter referred to. The Figures 1 and 2
being half vertical sections shewing different applications of our invention.
Our tanks may be used either with or without chemicals and in constructing one
of them we provide an outer cylindrical casing A of metal, brickwork or other
suitable material this cylinder or tank tapering or being of the shape of an inverted
cone at its lower part B and terminating in a bulb or sumph C from which the
sludge or deposit D may be withdrawn, the top of this outer tank is covered or
sealed except as to the inlet E for sewage, manholes F and effluent outlets G, G¹;
within this outer tank or cylinder we form one or more divisions of metal or other
suitable material having spaces between each of them for the sewage to flow and
thus forming chambers of such a diameter or diameters as will best regulate the
flow of the sewage and to assist the precipitation of the sludge or solid matter; the
tops H, H of these inner chambers are closed with a cover of metal or other
material formed so as to equally distribute the sewage which falls upon this cover
from the inlet for sewage which is immediately over it.
The division L between the chambers K and O on Figure 1 is of a diagonal
form the outermost chamber K being larger at the top than at the bottom.
In Figure 2 the innermost chamber P is the larger, the division Q being placed
nearer to the outer casing A. and only a comparatively small space R being left for
the passage of the sewage.
In Figure 1 the division L between the chambers K and O is joined to the
cover H at the trough J while in Figure 2 the cover H₁ and division Q are
continuous it is evident however that any convenient arrangement of these
chambers may be employed that will ensure an even and regular flow of sewage.
Outlets G. G' for the effluent are provided near the top of the inner chamber
and immediately under the cover to same and are always placed below the normal
level of the sewage in the main chamber or tank.
The sewage enters the main cylinder or tank A through inlets in its top or cover
and falls upon the top or cover of the inner cylinder which distributes it equally all
round the same and passing down between the divisions L or Q and the outer main
cylinder or tank then up one of the inner chambers O or P, taking the courses
indicated by the arrows on the drawing, and over the upper edge of the inner
chamber into the troughs J or J' and thence by a suitable conduit to outlets G, G¹,
the sludge or solid portions falling by precipitation to the sumph or contracted

page_text: lower portion of the main tank, arms L are placed at the bottom of the inner
chamber to regulate and distribute the upward action of the sewage more evenly.
The divisions between the inner chambers or cylinders may be hung from the
top of the main cylinder or supported upon brackets M, feet, or in other suitable
manuer not calculated to interfere with the flow of the sewage.
The sludge may be withdrawn through a pipe N communicating with the bottom
of the main tank or cylinder from the sumph there placed without stopping the
flow or working of the sewage.
In adopting the arrangement shewn upon Figure 1 the top H of the inner
chamber K may be made of a star or other convenient shape on plan so as to more
readily distribute the sewage.
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
The improved construction of vertical tanks or receptacles for precipitating
sewage and for like purposes substantially as described herein and illustrated by
the accompanying sheet of drawings.
1
£ May 1993
+
W. SWINDELL,
Agent for the Applicants.