Magnet control circuit

Claim 1

A MAGNET CONTROL CIRCUIT COMPRISING IN COMBINATION A FIRST SOURCE OF DIRECT CURRENT AND A SECOND SOURCE OF DIRECT CURRENT A RESISTANCE-CAPACITANCE OSCILLATING CIRCUIT INCLUDING A PLURALITY OF RESISTANCE PATHS WHEREBY THE CHARGE AND DISCHARGE TIMES OF THE RESISTANCE-CAPACITANCE CIRCUIT CAN BE VARIED, A DOUBLE-POLE, DOUBLE-THROW SWITCH ACTUATED BY A RELAY WHEREBY SAID SECOND SOURCE OF ELECTRICITY CAN BE REVERSED IN POLARITY FOR SUPPLYING A MAGNET CIRCUIT, A FIRST SWITCH CONNECTED TO SAID FIRST SOURCE OF ELECTRICITY HAVING POLES THEREON TO ACTUATE THE COIL OF SAID RELAY WHEREBY IN ONE POSITION THE RELAY WILL BE HELD PERMANENTLY OPEN, IN A SECOND POSITION WILL BE HELD PERMANENTLY CLOSED AND IN A THIRD POSITION BE CAUSED TO OSCILLATE BY MEANS OF SAID RESISTANCE CAPACITANCE CIRCUIT, MEANS WHEREBY THE CAPACITANCE OF SAID CIRCUIT CAN BE ALTERED TO CHANGE THE FREQUENCY OF OSCILLATION, AND A SECOND SWITCH IN SAID CIRCUIT, OPERATIVE WHEN THE FIRST SWITCH IS IN ITS THIRD POSITION, SAID SECOND SWITCH BEING OPERATIVELY CONNECTED TO SAID RESISTANCE-CAPACITANCE OSCILLATING CIRCUIT TO CONTROL THE CHARGE AND DISCHARGE TIMES OF THE CAPACITANCE, SAID SECOND SWITCH HAVING A POSITION WHEREIN THE CHARGE AND DISCHARGE TIMES OF THE OSCILLATING CIRCUIT ARE OF SUBSTANTIALLY EQUAL DURATION AND HAVING SECOND AND THIRD POSITIONS CONTROLLING SAID RESISTANCE PATHS WHEREBY A RELATIVELY LONG CHARGE TIME AND A RELATIVELY SHORT DISCHARGE TIME ARE PROVIDED AND VICE VERSA, SECOND SWITCH HAVING POSITIONS THEREON WHEREBY WHEN SAID FIRST SWITCH IS IN THE THIRD POSITION SAID SECOND SWITCH HAS A POSITION WHEREIN THE ALTERNATIONS ARE OF SUBSTANTIALLY EQUAL DURATION IN EACH DIRECTION AND POSITIONS WHEREBY THE DURATION OF THE CURRENT FLOWING IN ONE DIRECTION IS GREATER THAN THAT FLOWING IN THE OPPOSITE DIRECTION.