Locomotive generator-fed plural motor control system

Claim 1

IN COMBINATION, A DIRECT CURRENT GENERATOR HAVING AN ARMATURE AND A FIELD WINDING, A PRIME MOVER FOR DRIVING THE GENERATOR, SEPARATE EXCITATION MEANS FOR THE GENERATOR FIELD WINDING, SAID EXCITATION MEANS INCLUDING SATURABLE REACTOR CONTROL MEANS FOR CONTROLLING THE GENERATOR FIELD CURRENT, A CONTROLLER, THE SATURABLE REACTOR MEANS HAVING FIRST CONTROL WINDING MEANS ENERGIZED IN RESPONSE TO THE POSITION OF SAID CONTROLLER AND TO THE SPEED OF THE PRIME MOVER, THE SATURABLE REACTOR MEANS HAVING SECOND CONTROL WINDING MEANS FOR LIMITING THE GENERATOR CURRENT, THE SECOND CONTROL WINDING MEANS BEING ENERGIZED IN RESPONSE TO THE GENERATOR CURRENT AND THE POSITION OF THE CONTROLLER, A PLURALITY OF MOTORS HAVING ARMATURES CONNECTED TO THE GENERATOR AND HAVING FIELD WINDINGS, SEPARATE EXCITATION MEANS FOR THE MOTOR FIELD WINDINGS, SAID LAST MENTIONED EXCITATION MEANS INCLUDING SATURABLE REACTOR CONTROL MEANS FOR CONTROLLING THE EXCITATION OF THE MOTOR FIELD WINDINGS, THE LAST MENTIONED SATURABLE REACTOR MEANS HAVING FIRST CONTROL WINDING MEANS ENERGIZED IN RESPONSE TO THE MOTOR CURRENT AND SECOND CONTROL WINDING MEANS ENERGIZED IN RESPONSE TO THE GENERATOR CURRENT AND THE SPEED OF THE PRIME MOVER TO REDUCE THE MOTOR FIELD CURRENT WHEN THE GENERATOR FIELD EXCITATION HAS REACHED ITS MAXIMUM VALUE, AND BRAKING MEANS INCLUDING A BRAKING CONTROLLER FOR EFFECTING ENERGIZATION OF THE SECOND CONTROL WINDING MEANS OF THE LAST MENTIONED SATURABLE REACTOR MEANS TO INCREASE THE MOTOR FIELD EXCITATION TO EFFECT OPERATION OF THE MOTORS AS GENERATORS FOR BRAKING ACTION.