Mechanical interlock for electric switches

Claim 1

IN AN INTERLOCK FOR A PAIR OF ELECTROMAGNETS THAT ARE SPACED FROM ONE ANOTHER AND MOUNTED ON A SUPORT, WHEREIN EACH ELECTROMAGNET HAS AN OPERATING MAGNET AND AN ACTUATOR PROVIDED WITH A BEARING LEDGE, WHICH ACTUATOR IS LINEARLY MOVABLE UPWARDLY IN RESPONSE TO ENERGIZATION TO THE MAGNET AND DOWNWARDLY UPON DEENERGIZATION OF THE MAGNET, THE COMBINATION COMPRISING: A BRACKET DISPOSED WITHIN THE SPACE BETWEEN THE PAIR OF ELECTROMAGNETS AT A POINT BELOW THE BEARING SUPPORT; A SHAFT PROJECTING OUTWARDLY OF SAID BRACKET BETWEEN SAID ELECTROMAGNETS AT A POINT BELOW THE BEARING LEDGES; A LEVER ARM PIVOTALLY SUPPORTED AT ONE END UPON SAID SHAFT AND HAVING ITS OTHER FREE END DISPOSED AT A LEVEL ABOVE THE BEARING LEDGE; A ROLLER MOUNTED ON SAID FREE END OF SAID LEVER ARM, SAID ROLLER BEING OF A DIAMETER GREATER THAN THE SPACE BETWEEN SAID BEARING LEDGES WHEREBY PORTIONS OF SAID ROLLER EXTEND INTO THE PATHS OF TRAVEL OF THE BEARING LEDGES OF BOTH ELECTROMAGNETS, SAID ROLLER BEING CONTACTED BY A BEARING LEDGE OF THE ACTUATOR OF ONE ELECTROMAGNET UPON MOVEMENT OF SAID ACTUATOR IN RESPONSE TO ENERGIZATION OF ITS ASSOCIATED MAGNET TO THEREBY DISPLACE SAID ROLLER IN AN ARC ABOUT SAID SHAFT FURTHER INTO THE PATH OF TRAVEL OF A BEARING LEDGE OF THE ACTUATOR OF THE SECOND ELECTROMAGNET AND TOWARDS SUCH BEARING LEDGE WHEREBY SAID ROLLER BLOCKS MOVEMENT OF THE ACTUATOR OF THE SECOND ELECTROMAGNET IN RESPONSE TO ENERGIZATION OF ITS ASSOCIATED MAGNET UNTIL THE MAGNET OF THE FIRST ELECTROMAGNET IS DEENERGIZED; AND ADJUSTMENT MEANS FOR SAID BRACKET FOR ADJUSTMENT OF THE POSITION OF SAID SHAFT RELATIVE TO THE BEARING LEDGES OF THE ACTUATORS OF SAID ELECTROMAGNETS SO THAT SAID ROLLER WILL ENGAGE A BEARING LEDGE OF THE ACTUATOR OF SAID SECOND ELECTROMAGNET WHEN THE ACTUATOR OF THE FIRST ELECTROMAGNET HAS COMPLETED ITS MOVEMENT IN RESPONSE TO ENERGIZATION OF ITS ASSOCIATED MAGNET.