Pilot lamp mounting in the circuit for charging a battery from an alternator

Claim 1

IN A MOTOR SPEED CONTROL CIRCUIT, A SOURCE OF ALTERNATING CURRENT POWER, A MOTOR, MEAN S CONNECTING SAID MOTOR TO SAID POWER SOURCE INCLUDING A SILICON CONTROLLED RECTIFIER HAVING A GATE, A FIRST PAIR OF DIODES CONNECTED IN SERIES WITH SAID RECTIFIER AND ARRANGED TO CONDUCT CURRENT THROUGH SAID RECTIFIER IN ONE DIRECION DURING ONE PORTION OF EACH CYCLE, A SECOND PAIR OF DIODES CONNECTED INSERIES WITH SAID RECTIFIER AND ARRANGED TO CONDUCT CURRENT THROUGH SAID RECTIFIER IN SAID ONE DIRECTION DURING ANOTHER PORTION OF SAID CYCLE, SAID SILICON CONTROLED RECTIFER HAVING AN INPUT TERMINAL AND AN OUTPUT TERMINAL, A SHUNT CIRCUIT CONTAINING A CIAPACITOR AND A RESISTANCE CONNECTING THE INPUT TERMINAL AND THE OUTPUT TERMINAL OF SAID RECTIFIER, AND A FOUR-LAYER DIODE CONNECTING THE GATE OF SAID RECTIFIER WITH A POINT ON SAID SHUNT CIRCUIT BETWEEN SAID CAPACITOR AND SAID RECTIFIER WHEREBY SAID RESISTANCE CAPACITOR SHUNT CIRCUIT IS SUPPLIED WITH RECTIFIER CURRENT TO BUILD UP A CHARGE UPON SAID CAPACITOR IN ACCORDINACE WITH THE TIME CONSTANT OF SAID SHUNT SUFFICIENT PERIODICALLY TO BREAK DOWN SAID FOUR-LAYER DIODE AND ALLOW SAID CAPACITOR TO DISCHARGE PERIODICALLY THROUGH SAID FOUR-LAYER DIODE TO SAID GATE TO PERIODICALLY FIRE SAID SILICON CONTROLLED RECTIFIER.