Year: 1897

page_text: I, THOMAS COSHAM, of Portland House, Bowbridge Road, Newark on Trent, in
the County of Nottingham Sanitary Specialist do hereby declare the nature of my
said invention to be as follows:
My invention relates to an invention for which I have obtained Letters Patent
dated 14th November 1893, No 21,706; and the object of my present invention
is to effect further improvements therein.
According to my invention I fit improved ball valves to the connecting pipes
leading from the central or primary chambers to the divisional chambers, when
applied to the circular tanks, as shown in Figs 1 and 2 of the aforesaid specification,
or from the divisional chambers to the sludge pipes or channels in rectangular
or other shaped tanks. The valves are fitted in seatings or other suitably shaped
receptacles attached to the upper ends of the connecting pipes. The lower ends
of the connecting pipes have removable bars to prevent the balls falling out of the
pipes. The balls are formed of India-rubber, wood, or any other suitable material
capable of being floated by the sewage or other liquors. The valve seatings at
the upper ends of the connecting pipes, are conoidal, with the smallest end upwards.
Over each valve seating I fit truly turned discs, with rods attached for lifting
them. The normal height of the sewage in the central or initial compartments
being higher than that in the divisional chambers, the balls are thereby forced to
their seatings, and the sewage or other liquors are thereby prevented from entering
the divisional chambers.
When the divisional chambers are all full and the sludge requires extracting,
the central or initial compartment is pumped out. Any one or more of the divi-
sional chambers may then be emptied by simply lifting the discs above the valves,
when the balls leave their seats by the downward pressure.
The connecting pipes are preferably made of salt-glazed stone-ware, or any other
non-corrodible material, and the valve seatings of lead or any other suitable
material.

page_text: Improvements in Sewage Precipitating Tanks.
I, THOMAS COSHAM of Portland House Bowbridge Road, Newark-on-Trent, in
the County of Nottingham Sanitary Specialist do hereby declare the nature of my
said invention and in what manner the same is to be performed, to be particularly
described and ascertained by the following statement:-
My invention relates to an invention for which I have obtained Letters Patent
dated 14th November 1893 No 21,706, and the object of my present invention is
to effect further improvements therein.
According to my invention I fit improved ball valves to the connecting pipes
leading from the central or primary chambers to the divisional chambers, when
applied to the circular tanks as shown in Figs 1 and 2 of the aforesaid Specification,
or from the divisional Chambers to the sludge pipes or channels in rectangular
or other shaped tanks. The valves are fitted in seatings or other suitably shaped
receptacles attached to the upper ends of the connecting pipes. The lower ends
of the connecting pipes have removable bars to prevent the balls falling out of the
pipes. The balls are formed of India-rubber, wood, or any other suitable material
capable of being floated by the sewage or other liquids. The valve seatings at
the upper ends of the connecting pipes are conoidal with the smallest end upwards.
Over each valve seating I fit truly turned discs. with rods attached for lifting
them. The normal height of the sewage in the central or initial compartments
being higher than that in the divisional chambers the balls are thereby forced to
their seatings, and the sewage or other liquids are thereby prevented from entering
the divisional chambers.
When the divisional chambers are all full and the sludge requires extracting
the central or initial compartment is pumped or siphoned out. Any one or more of
the divisional chambers may then be emptied by simply lifting the discs above the
valves, when the balls leave their seats by the downward pressure.
The connecting pipes are preferably made of salt-glazed stone-ware, or any other
noncorrodible material, and the valve seatings of lead or any other suitable
material.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings, in which similar
figures of reference indicate corresponding parts.
Fig 1 is a sectional elevation showing the valve in position, as fitted to the
passage in a division wall, such as that between the chambers 10 and 12 in Figs 1
and 2 of my said Specification No 2170693.
Fig 2 is a section on the line a b of Fig 1.
Fig 3 is an elevation partly in section on the line c d of Fig 1.
In the position in which the valve is shown in the drawings, the sewage is
assumed to be at a higher level on the left hand side of the wall 15 in Fig 1. (the
central chambers in Figs 1 and 2 of 2170693) and the valve 4 is raised so as to seal
the passage leading to the outer chamber 16. 5 is the lead cone. 6 is the con-
necting pipe nassing through the wall 15. 7 is a flexible washer. 8 is a disc
formed of wood or other suitable material, 9 is a non-corrodible plate screwed
to the disc 8 for connecting the rod 10 therewith. The rod 10 has an external
screw thread, working in a corresponding internal screw thread in the liner 12
fitted to the bracket 11, which bracket is secured to the wall 15 by bolts 14. 13
is a movable bar fitted to the passage 6 to prevent the ball 4 falling out of the
passage.
All the metallic parts of my invention are preferably incorrodible.
4

page_text: In applying my improved valve to a sludge outlet at the bottom of my rectan-
gular tanks, the ball 4 may be dispensed with.
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 improvement in sewage precipitating tanks substantially as and for the
purposes described.
2 In a sewage precipitating tank of the description aforesaid, the combination
therewith of the improved accessible and noncorrodible valve, which may be
removed and replaced without disturbing the brickwork or masonry substantially
as herein before described and illustrated by the drawings.
3 The application and use of my improved valve to and with a sludge outlet at
the bottom of my rectangular tanks, the ball 4 being dispensed with, substantially
as described.
Dated 17th day of November 1897
GEORGE DOWNING & SONS
8 Quality Court London WC. Agents.