Current control circuit

Claim 1

A MOTOR CONTROL CIRCUIT FOR USE WITH A SOURCE OF UNIDIRECTIONAL PULSES, A REVERSIBLE ELECTRIC MOTOR, AND A MECHANICAL DEVICE TO INDICATE POSITION OF A LOAD COUPLED TO SAID MOTOR COMPRISING A PAIR OF ELECTRIC LAMPS, MEANS FOR APPLYING SAID PULSES TO SAID LAMPS, MEANS FOR CONTROLLING LIGHT OUTPUT OF SAID LAMPS, A PAIR OF LIGHT ACTUATED SWITCHES, MEANS FOR CONTROLLING CURRENT THROUGH SAID SWITCHES, SAID PAIR OF LAMPS BEING RADIATION-COUPLED TO SAID PAIR OF SWITCHES, A SHUTTER, SAID SHUTTER BEING POSITIONED BY SAID MECHANICAL DEVICE TO CONTROL THE AMOUNT OF LIGHT FROM SAID LAMPS FALLING UPON SAID SWITCHES, A MECHANICAL DAMPING MEANS, SAID DAMPING MEANS BEING CONNECTED TO SAID SHUTTER, A PAIR OF CURRENT CONTROLLING MEANS, SAID CURRENT CONTROLLING MEANS INTERCONNECTING SAID SOURCE OF PULSES AND SAID MOTOR, SAID SWITCHES BEING DIRECTLY CONNECTED TO SAID CONTROLLING MEANS TO CONTROL CURRENT FROM SAID SOURCE OF PULSES TO SAID REVERSIBLE MOTOR, AND ELECTRICAL DAMPING MEANS, SAID DAMPING MEANS BEING CONNECTED BETWEEN SAID SOURCE OF PULSES AND SAID CURRENT CONTROLLING MEANS, SAID DAMPING MEANS BEING COUPLED TO SAID SOURCES OF RADIATION, SAID ELECTRICAL DAMPING MEANS CONTROLLING LIGHT OUTPUT OF SAID LAMPS IN RESPONSE TO CURRENT THROUGH SAID MOTOR.