Secondary clock correction and synchronization apparatus

Claim 1

IN A MASTER-SECONDARY CLOCK SYSTEM WHEREIN A SECONDARY CLOCK IS ADVANCED BY MINUTE IMPULSES OF ELECTRICAL CURRENT, CORRECTION AND SYNCHRONIZATION MECHANISMS FOR OVERRIDING SAID MINUTE IMPULSES AND EFFECTING A MULTIPLE OF PERIODIC CORRECTIONS IN SAID SECONDARY CLOCK FOR ADVANCING IT TO A PREDETERMINED SETTING COMPRISING, IN COMBINATION, INITIATING MEANS FOR INITIATING SAID CORRECTIONS, A MULTIPLE OF PROFILED DISCS ADAPTED FOR ROTATION, MEANS RESPONSIVE TO SAID INITIATING MEANS TO ROTATE SAID DISCS, AN ELECTROMAGNETIC ADVANCING MEANS IN SAID SECONDARY CLOCK, SWITCHES ASSOCIATED WITH EACH OF SAID DISCS AND CIRCUITS ASSOCIATED WITH EACH OF SAID SWITCHES FOR SUPPLYING ELECTRICAL CURRENT OF DIFFERING POLARITIES TO ENERGIZE SAID ELECTROMAGNETIC ADVANCING MEANS, AN ARMATURE FORMING PART OF SAID ADVANCING MEANS, A PAIR OF CONTACTS ADJACENT SAID ARMATURE IN SERIES CIRCUIT WITH SAID ELECTROMAGNETIC ADVANCING MEANS, AND MEANS INCLUDING SAID ARMATURE EFFECTING OPERATION OF SAID CONTACTS TO ENERGIZE AND DE-ENERGIZE SAID ELECTROMAGNETIC ADVANCING MEANS DURING SAID PERIODIC CORRECTIONS UNTIL SAID SECONDARY CLOCK IS ARRESTED AT A PREDETERMINED SETTING.