Improvements in Apparatus for Facilitating the Removal of Sludge from Precipitation and Settling Tanks for the Treatment of Sewage and other Foul Waters.
Year: 1896

page_text: Date of Application, 30th Nov. 1890
Complete Specification Left, 28th Aug., 1897-Accepted, 9th Oct., 1897
Date of Application,
EN NOV.
Complete Specification Left, 28th Aug., 1897-Accepted, 9th Oct., 1897
SIONAL SI CIFICATION
Improvements in Apparatus for Facilitating the Removal of Sludge
from Precipitation and Settling Tanks for the Treatment of
Sewage and other Foul Waters.
I, EDWIN CODLING, of 3 Cross Street, Manchester, in the County of Lancaster,
Sanitary Expert and Engineer, do hereby declare the nature of this 'Invention
to be as follows:-
My invention relates to improvements in apparatus for facilitating the removal
of sludge from precipitation and settling tanks for the treatment of sewage and
other foul waters. Each tank is circular and with preferably a sloping bottom
through a central aperture in which and a pipe or passage leading therefrom and
controlled by a valve the sludge is discharged intermittently in the manner now
well understood.
In carrying my improvements into effect I mount a vertical shaft in suitable
bearings centrally in the tank. This shaft is rotated when required by suitable
gearing driven by a hand wheel or by power and on it is mounted a sliding
sleeve or boss carrying a circular frame or wheel, the sleeve with the wheel
being traversed up and down along the vertical shaft when necessary by means
of a nut and screw or other convenient mechanism. Round the periphery of
the wheel is fixed a ring or strip of rubber or other suitable flexible material or
a brush or equivalent which fills up the space between the periphery of the wheel
and the wall of the tank so that when the boss with the wheel is traversed along
the vertical shaft the rubber ring acts as a squeegee to scrape the sludge from the
sides of the tank. On the under side of the circular frame or wheel are fixed any
suitable number, preferably two, squeegees, brushes or scrapers which are set
obliquely and at any required angle to scrape the sludge at the bottom of the
tank and sweep it towards the central discharge aperture when rotatory motion
is given to the vertical shaft and wheel.
Dated this 28th day of November 1896.
H. B. BARLOW & GILLETT,
Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Facilitating the Removal of Sludge
from Precipitation and Settling Tanks for the Treatment of
Sewage and other Foul Waters.
I, EDWIN CODLING, of 3 Cross Street, Manchester, in the County of Lancaster,
Sanitary Expert and Engineer, do hereby declare the nature of this Invention
D....031

page_text: 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 improvements in apparatus for facilitating the removal
of sludge from precipitation and settling tanks for the treatment of sewage and
other foul waters. Each tank is circular and with either a flat or a sloping
bottom through a central aperture in which and a pipe or passage leading there-
from and controlled by a valve the sludge is discharged intermittently in the
manner now well understood.
I carry my improvements into effect as illustrated in the accompanying Sheet
of Drawings in which-
Figure 1 is a sectional elevation and Fig. 2 a plan of an apparatus made accord-
ing to my invention.
In these views, a designates a circular precipitation tank which in this case
is made with a flat bottom, b is a light circular frame or wheel provided with a
rubber ring c or equivalent to form a squeegee or brush on its periphery. The
boss of the wheel b is threaded and is mounted upon a screw threaded vertical
shaft d supported in top and bottom bearings g g and rotated when required by
bevel gearing e driven by a hand wheel, not shown, or by power. To the lower
face of the wheel b is secured a squeegee f (or two or more adjustable squeegees set
obliquely and at an angle to one another) as shown in the plan view Fig. 2.
bottom of the tank a has a central recess a¹ formed in it and in this recess is
fixed the enlarged end of a sludge pipe h controlled by a valve j placed near the
outlet and discharge trough i.
The
To clean the sides of the tank a the shaft is rotated and the wheel b is
prevented from turning round with it by means of a rod k or any other suitable
device whereby as the shaft is rotated the wheel b is slowly traversed downward
and the squeegee c scrapes the walls and dislodges the sludge which falls down into
the bottom of the tank.
When the wheel b has reached the bottom its boss engages an adjustable stop
nut m on the shaft and the rod k having been withdrawn the wheel rotates with
the shaft so that the squeegee f sweeps the sludge on the bottom of the tank
towards the central recess a¹ from whence it is driven up the sludge pipe h when
the tap is open by the pressure of the supernatant liquid in the tank.
After the tank has been cleared out the motion of the shaft d is reversed and
by inserting the rod k the wheel b is traversed back to its highest position as 3
shown in Fig. 1.
I wish it to be understood that I do not limit myself to any particular arrange-
ment of mechanism for traversing up and down and rotating the wheel b.
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:-
1. The combination with a precipitation tank of a frame or wheel capable of
being traversed up and downward and rotated and provided with squeegees or
equivalents to scrape or brush the side walls and the bottom of the tank sub-
stantaally in the manner herein set forth.
2. The general arrangement and combination of parts embodying my improve-
ments in apparatus for facilitating the removal of sludge from settling tanks sub-
stantially as herein described with reference to the accompanying Drawings.
Dated this 27th day of August 1807
4
H. B. BARLOW & GILLETT,
17 St. Ann's Square, Manchester, Agents for Applicant.