Electromechanical oscillator with variable duty cycle

Claim 1

IN AN ELECTRICAL SYSTEM, A SOURCE OF DIRECT CURRENT ELECTRICAL ENERGY, A LOAD, A TRANSISTOR INCLUDING AN EMITTER AND A COLLECTOR CONNECTED IN SERIES WITH SAID LOAD AND SAID SOURCE OF ELECTRICAL ENERGY, SAID TRANSISTOR INCLUDING A BASE, ELECTROMECHANICAL SWITCH MEANS FOR CONNECTING SAID BASE TO SAID SOURCE OF ELECTRICAL ENERGY TO BIAS SAID TRANSISTOR INTO A FULLY CONDUCTING STATE WHEN SAID ELECTROMECHANICAL SWITCH MEANS IS CLOSED, SAID ELECTROMECHANICAL SWITCH MEANS INCLUDING A MOVABLE ARM AND A SOLENOID ELECTROMAGNETICALLY COUPLED TO SAID MOVABLE ARM, SAID SOLENOID CONNECTED IN SHUNT WITH SAID TRANSISTOR, MEANS ENGAGING SAID MOVABLE ARM FOR BIASING SAID SWITCH TO THE OPEN POSITION, THE ELECTROMAGNETIC FORCE EXERTED BY SAID SOLENOID WHEN ENERGIZED BEING INSUFFICIENT TO MOVE SAID MOVABLE ARM TO THE EXTENT OF CLOSING SAID SWITCH, AND AUXILIARY MEANS FOR APPLYING A FORCE AT ALL TIMES DURING THE OPERATION OF THE ELECTRICAL SYSTEM TO SAID MOVABLE ARM IN A DIRECTION TO CLOSE SAID SWITCH, SAID AUXILIARY MEANS INCLUDING MEANS FOR VARYING SAID FORCE WHEREBY SAID TRANSISTOR IS ALTERNATELY SWITCHED FROM A CONDUCTING TO A NONCONDUCTING STATE AND SAID LOAD IS PERIODICALLY ENERGIZED WITH A DUTY CYCLE DEPENDENT UPON THE MAGNITUDE OF THE FORCE APPLIED BY SAID AUXILIARY MEANS.