Patent ID: 8713720

Claim:
A gravity operated mechanical flushing apparatus having a weight sensing element ( 1 ) provided with a tank (T) containing a component part ( 8 ) able to move along a vertical path against a spring force and a controlled feeder valve ( 5 ) coupled to a water supply system characterized in that said weight sensing element ( 1 ) has at its lower end an output ( 6 ) able to move vertically causing a mechanical operating event, said output ( 6 ) is coupled to a ratchet mechanism ( 3 ) through a coupling transmission ( 2 ), said ratchet mechanism is able to transmit every second mechanical operating event presented by said output ( 6 ) and said transmission ( 2 ) to a control element of said controlled feeder valve ( 5 ) by means of a further transmission ( 4 ) in order to transmit an activating mechanical movement, said controlled feeder valve ( 5 ) is coupled to a pipe ( 17 ) for filling a determined amount of water for flush from the water supply system into said tank (T) through an outlet ( 18 ) of said pipe ( 17 ).