Improvements in Automatic Flushing Apparatus.
Year: 1897

page_text: Improvements in Automatic Flushing Apparatus.
I, RICHARD BROWN EVERED, of 27 to 35, Drury Lane, in the County of Middle-
sex, do hereby declare the nature of this invention to be as follows:-
The apparatus is of the class in which a tank is continuously and slowly filled
and suddenly and periodically emptied by siphonic action.
According to this invention the siphonic action is started by a sudden rush
of water down the long leg of the siphon from a cock or valve opened by a float
when the tank is full.
The cock or valve is operated in the usual manner by a lever carrying at its end
a hollow ball serving as a float, but the arrangement is inverted so that the cock
opens when the ball rises and closes when it falls. Pivotted to the lever is a catch
which when the lever is in its lowest position comes beneath a fixed stop and pre-
vents the ball from rising as the tank fills. A second ball float carried by a second
lever is however also provided and is free to rise as the tank fills its lever being
so arranged that when the tank is nearly full its tail end comes against the catch
and trips it allowing the first mentioned ball and lever to rise and turn on the
jet so starting the siphon. As the tank empties both balls fall and the catch again
comes under its stop.
1007
Improvements in Automatic Flushing Apparatus.
I, RICHARD BROWN EVERED, of 27 to 35, Drury Lane, in the County of Middle-
sex, 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 apparatus is of the class in which a tank is continuously and slowly filled
and suddenly and periodically emptied by siphonic action.
According to this invention the siphonic action is started by a sudden rush.
of water down the long leg of the siphon from a cock or valve opened by a float
when the tank is full.
The cock or valve is operated in the usual manner by a lever carrying at its end
a hollow ball serving as a float, but the arrangement is inverted so that the cock
when the ball rises and closes when it falls. Pivotted to the lever is a catch
opens

page_text: which when the lever is in its lowest position comes beneath a fixed stop and pre-
vents the ball from rising as the tank fills. A second ball float carried by a second
lever is however also provided and is free to rise as the tank fills its lever being
so arranged that when the tank is nearly full its tail end comes against the catch
and trips it allowing the first mentioned ball and lever to rise and turn on the
jet so starting the siphon. As the tank empties both balls fall and the catch again
comes under its stop.
Figure 1 is a vertical section of an apparatus constructed according to this
invention.
a is the tank, 6 the short leg of the siphon, and c the long leg. d is the supply
pipe having on it a small cock e which is always open when the apparatus is at
work and slowly fills the tank. f is a branch of the supply pipe leading to the top
of the long leg c of the siphon and terminating in a nozzle or jet g or I may use
a convolvulus jet has shown in Figure 2. j is a valve on the pipe f operated by
the lever pivotted at 1 and having fixed to it the float m. n is a catch pivotted
at n¹ to the lever and having at its upper end a notch which when the parts are
in the positions shown in full lines in Figure 1 engages with a fixed pin
venting the float m from rising. p is a lever pivotted at p¹ and having fixed to
it a float q. As the cistern fills the float q rises and ultimately the tail end p² of
the lever forces the catch n out of engagement with the pin o whereupon the
float m suddenly rises opening the valve j and directing a rush of water by the
jet g down the pipe c thereby sweeping out the air and starting the siphonic action.
When the tank is empty the parts resume the positions shown in full lines in
Figure 1.
o so pre-
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 of a tank, a constant water supply to it, a siphon, a water
supply pipe to the long leg of the siphon, a cock or valve on the pipe, and a float
in the tank operating the cock or valve.
2. The combination of a tank, a constant water supply to it, a siphon, a water
supply pipe to the long leg of the siphon, a cock or valve on the pipe, a float in the
tank operating the cock or valve, means for holding down the float until the tank
is full and for then releasing it.
3. Automatic flushing apparatus substantially as described and shown in the
drawings.
Dated this 11th day of March 1898.