Add-on main pole unit for contactors

Claim 1

IN A CONTACTOR HAVING A BASE, COOPERATING STATIONARY AND MOVABLE CONTACTS, A MOVABLE CARRIER TO WHICH SAID MOVABLE CONTACTS ARE MOUJNTED, MEANS FOR MOVING SAID MOVABLE CARRIER BETWEEN A FIRST AND SECOND POSITION IN WHICH SAID MOVABLE CONTACTS ARE IN AND OUT OF ENGAGEMENT WITH SAID STATIONARY CONTACTS, RESPECTIVELY, THE IMPROVEMENT COMPRISING AN ADD-ON MAIN POLE UNIT WHICH INCLUDES; A BASE ASSEMBLY HAVING FIRST MEANS FOR RIGIDLY MOUNTING SAID BASE ASSEMBLY TO THE BASE OF SAID CONTACTOR, SAID BASE ASSEMBLY FURTHER INCLUDING A PAIR OF ADDITIONAL STATIONARY CONTACTS SPACED APART THEREIN; A MOVABLE ASSEMBLY HAVING AN ADDITIONAL MOVABLE CONTACT OPERABLE INTO AND OUT OF ENGAGEMENT WITH SAID ADDITIONAL STATIOARY CONTACTS, SAID MOVABLE ASSEMBLY FURTHER INCLUDING AN INSULATING MEMBER HAVING A FIRST AND SECTION AND A SPRING BIASED BETWEEN SAID FIRST SECTION AND SAID ADDITIONAL MOVABLE CONTACT FOR FIRMLY BIASING SAID ADDITIONAL MOVABLE CONTACT INTO ENGAGEMENT WITH SAID ADDITIONAL STATIONARY CONTACTS WHEN THE MOVABLE CARRIER OF SAID CONTACTOR MOVES SAID MOVABLE CONTACTS INTO ENGAGEMENT WITH SAID STATIONARY CONTACTS, SAID FIRST SECTION OF SAID INSULATING MEMBER AND SAID BEING RESIDING BETWEEN SAID ADDITIONAL STATIONARY CONTACTS; AND A COVER INCLUDING MEANS FOR MOUNTING SAID COVER TO SAID BASE ASSEMBLY IN POSITION TO FORM A CHAMBER WHICH ENCLOSES SAID ADDITIONAL STATIONARY CONTACTS AND SAID ADDITIONAL MOVABLE CONTACTS; SAID SECOND SECTION OF SAID INSULATING MEMBER EXTENDING BEYOND THE CONFINES OF SAID CHAMBER AND INCLUDING APERTURES THEREIN FOR THE RECEPTION OF A FASTENING MEMBER WHICH PASSES THROUGH SAID MOVABLE CARRIER OF SAID CONTACTOR AND INTO SAID SECTION TO SAID CARRIER; RIGIDLY SECURING SAID SECOND SECTION TO SAID CARRIER; MOVEMENT OF SAID MOVABLE CARRIER OF SAID CONTACTOR TO ITS FIRST POSITION CAUSING SAID ADDITIONAL MOVABLE CONTACT TO ENGAGE SAID ADDITIONAL STATIONARY CONTACTS, MOVEMENT TO SAID MOVABLE CARRIER TO ITS SECOND POSITION CAUSING SAID ADDITIONAL MOVABLE CONTACT TO DISENGAGE SAID ADDITIONAL STATIONARY CONTACTS, MOVEMENT OF SAID MOVABLE CARRIER TO ITS SECOND POSITION BEING THE ONLY MANNER IN WHICH SAID ADDITIONAL MOVABLE CONTACT MAY BE DISENGAGED FROM SAID ADDITIONAL STATIONARY CONTACTS.