Water level control system

Claim 1

IN A LIQUID STORAGE SYSTEM INCLUDING ELECTRICALLY RESPONSIVE MEANS GOVERNING THE FLOW OF LIQUID AT ANY TEMPERATURE THROUGH CONDUIT MEANS CONNECTING A SUPPLY RESERVOIR WITH A STORAGE TANK, THE COMBINATION THEREWITH OF AN ELECTRICAL CONTROL SYSTEM COMPRISING A SINGLE ELECTRICAL SWITCHING MEANS SEPARATE FROM SAID FLOW GOVERNING MEANS AND OPERABLY CONNECTED TO SAID FLOW GOVERNING MEANS, A FIRST CIRCUIT COUPLED TO SAID SWITCHING MEANS AND INCLUDING MEANS FOR PREVENTING ENERGIZATION OF SAID SWITCHING MEANS WHEN THE LIQUID IN SAID SUPPLY RESERVOIR IS BELOW A GIVEN LEVEL, AND ALSO COUPLED TO SAID SWITCHING MEANS, A SECOND AND A SEPARATE CIRCUIT INCLUDING AT LEAST TWO ELECTRODES DISPOSED IN SAID STORAGE TANK AND TERMINATING AT A FIRST LEVEL IN SAID STORAGE TANK AND OPERABLY COUPLED TO SAID SWITCHING MEANS FOR CAUSING ENERGIZATION OF SAID SWITCHING MEANS WHEN THE LIQUID IN SAID STORAGE TANK IS BELOW SAID FIRST LEVEL, AND AT LEAST ONE ADDITIONAL ELECTRODE DISPOSED IN SAID STORAGE TANK AND TERMINATING AT A SECOND LEVEL ABOVE SAID FIRST LEVEL, SAID ONE ADDITIONAL ELECTRODE COOPERATING WITH ONE OF SAID TWO ELECTRODES AND BEING COUPLED TO SAID SWITCHING MEANS FOR CAUSING ENERGIZATION OF SAID SWITCHING MEANS WHEN THE LIQUID IN SAID STORAGE TANK IS AT, OR ABOVE, SAID SECOND LEVEL, SAID SWITCHING MEANS INCLUDING A COIL BEING TAPPED BETWEEN ITS ENDS, SAID FIRST CIRCUIT BEING COUPLED TO SAID COIL BETWEEN SAID TAP AND ONE END THEREOF, SAID SECOND CIRCUIT BEING COUPLED BETWEEN THE OTHER END OF SAID COIL AND ELECTRICAL GROUND.