Electrical operating circuits for vehicle windscreen wipers

Claim 1

AN ELECTRICAL OPERATING CIRCUIT FOR VEHICLE WINDSCREEN WIPERS WHICH NORMALLY OCCUPY A PARKING POSITION WHEN THEY ARE NOT OPERATING, INCLUDING AN ELECTRIC MOTOR FOR DRIVING THE WIPERS, A ROTARY SWITCH IN SERIES WITH AND DRIVEN BY THE MOTOR, SAID ROTARY SWITCH OCCUPYING AN OPEN POSITION WHEN THE WIPERS ARE IN SAID PARKING POSITION BUT AT OTHER TIMES OCCUPYING A CLOSED POSITION IN WHICH IT COMPLETES A CIRCUIT TO THE MOTOR, A RELAY HAVING A RELAY COIL AND A NORMALLY OPEN RELAY CONTACT IN SERIES WITH SAID MOTOR, A MANUALLY OPERABLE SWITCH IN SERIES WITH SAID RELAY CONTACT, CLOSING OF SAID MANUALLY OPERABLE SWITCH COMPLETING A CIRCUIT TO THE MOTOR THROUGH SAID RELAY CONTACT, A CAPACITOR, MEANS FOR CHARGING SAID CAPACITOR WHEN SAID MANUALLY OPERABLE SWITCH IS CLOSED, MEANS OPERABLE WHEN SAID CAPACITOR IS CHARGED FOR ENERGISING SAID RELAY COIL TO SAID CAPACITOR IS CHARGED FOR ENERGISING CIRCUIT TO THE MOTOR THROUGH SAID MANUALLY OPERABLE SWITCH SO THAT THE WIPERS ARE OPERATED AND THE ROTARY SWITCH IS MOVED FROM ITS OPEN TO ITS CLOSED POSITION, MEANS PROVIDING A DISCHARGE PATH FOR SAID CAPACITOR WHEN SAID MOTOR IS ENERGISED, MEANS WHEREBY SAID RELAY BECOMES DE-ENERGISED WHEN THE CAPACITOR HAS DISCHARGED SO THAT SAID RELAY CONTACT OPENS AND THE MOTOR IS ENERGISED SOLELY THROUGH THE ROTARY SWITCH AND WILL BE STOPPED WHEN THE WIPERS REACH SAID PARKING POSITION, WHEREAFTER THE MOTOR REMAINS DE-ENERGISED FOR A PERIOD OF TIME DURING WHICH SAID CAPACITOR IS CHARGED AGAIN.