Phase angle indicating means

Claim 1

MEANS FOR PRODUCING A VOLTAGE ACROSS A LOAD, SAID VOLTAGE HAVING A LEVEL VARYING AS A FUNCTION OF THE PHASE ANGLE BETWEEN A FIRST AND SECOND ALTERNATING INPUT AND HAVING A POLARITY INDICATING WHICH OF THE INPUTS IS LEADING, SAID MEANS COMPRISING: A FIRST AND SECOND RESISTANCE EACH HAVING A FIRST AND SECOND END TERMINAL AND EACH HAVING ITS FIRST END TERMINAL CONNECTED TO AN ELECTRICAL POWER SOURCE; SAID LOAD CONNECTED BETWEEN THE SECOND END TERMINALS OF THE FIRST AND SECOND RESISTANCE; FIRST SWITCHING MEANS OPERABLE WHEN TURNED ON TO CONNECT THE SECOND TERMINAL OF THE FIRST RESISTOR TO CONDUCT CURRENT FROM THE ELECTRICAL POWER SOURCE THROUGH THE FIRST AND SECOND RESISTANCE AND THE LOAD, SAID FIRST SWITCHING MEANS CONNECTED TO BE RESPONSIVE TO THE FIRST INPUT TO TURN ON DURING HALF CYCLES OF ONE POLARITY OF THE FIRST INPUT; SECOND SWITCHING MEANS OPERABLE WHEN TURNED ON TO CONNECT THE SECOND TERMINAL OF THE SECOND RESISTOR TO CONDUCT CURRENT FROM THE ELECTRICAL POWER SOURCE THROUGH THE FIRST AND SECOND RESISTANCE AND THE LOAD, SAID SECOND SWITCHING MEANS CONNECTED TO BE RESPONSIVE TO THE SECOND INPUT TO BE TURNED ON DURING HALF CYCLES OF ONE POLARITY OF THE SECOND INPUT; AND MEANS RESPONSIVE TO HALF CYCLES OF THE ONE POLARITY OF BOTH THE FIRST AND SECOND INPUT FOR KEEPING THE FIRST AND SECOND SWITCHING MEANS TURNED ON AS LONG AS ONE INPUT IS IN A HALF CYCLE OF SAID ONE POLARITY.