Relay actuating circuit

Claim 1

IN A RELAY ACTUATING CIRCUITRY, AN ELECTRIC RELAY TO BE ACTUATED, A FIRST POWER SOURCE FOR SUPPLYING ALTERNATING CURRENT, A FIRST CIRCUIT HAVING A RECTIFIER FOR CONVERTING ALTERNATING TO DIRECT CURRENT, SWITCH MEANS FOR COMPLETING SAID FIRST CIRCUIT TO SAID FIRST POWER SOURCE, SAID FIRST CIRCUIT INCLUDING CAPACITANCE AND RESISTANCE CONNECTED IN SERIES FOR CHARGING SAID CAPACITANCE THROUGH SAID RESISTANCE WHEN SAID POWER SOURCE IS CONNECTED BY SAID SWITCH MEANS, A NORMALLY DE-ENERGIZED RADIATION GENERATING ELEMENT CONNECTED IN PARALLEL TO SAID CAPACITANCE OPERABLE TO GENERATE RADIATION WHEN SAID CAPACITANCE IS CHARGED TO A PREDETERMINED VOLTAGE, A SECOND POWER SOURCE, SECOND CIRCUIT MEANS CONNECTED TO SAID SECOND POWER SOURCE FOR ENERGIZING SAID ELECTRIC RELAY, SAID SECOND CIRCUIT ELECTRICALLY ISOLATED FROM SAID FIRST CIRCUIT, AND A RADIATION RESPONSIVE RESISTOR HAVING HIGH RESISTANCE IN THE DARK AND LOW RESISTANCE WHEN RADIATED BY SAID RADIATION GENERAING ELEMENT, SAID RADIATION RESPONSIVE RESISTOR POSITIONED FOR ILLUMINATION BY SAID RADIATION GENERATING ELEMENT, SAID ELECTRIC RELAY AND RADIATION RESPONSIVE RESISTOR CONNECTED IN SERIES IN SAID SECOND CIRCUIT MEANS TO SAID SECOND POWER SOURCE.