Electrical snap switch with improved guide means

Claim 1

AN IMPROVED ELECTRIC SWITCH COMPRISES A CASING, A FIRST FIXED CONTACT CARRIED BY SAID CASING, A SECOND FIXED CONTACT CARRIED BY SAID CASING, A MOVABLE CONTACT MEMBER PIVOTED TO SAID FIRST FIXED CONTACT ABOUT THE EDGE THEREOF AND ADAPTED TO ENGAGE SAID SECOND FIXED CONTACT, A PART RIGID WITH SAID MOVABLE CONTACT MEMBER, SAID PART FORMING A TRACK THE MIDDLE LINE OF THE SURFACE OF WHICH IS LOCATED IN A PLANE PERPENDICULAR TO SAID EDGE, A PUSHPIECE SLIDABLE ALONG SAID LINE OF SAID TRACK, A CONTROL LEVER PIVOTED TO SAID CASING ABOUT AN AXIS PARALLEL TO SAID EDGE AND MEANS FOR OPERATIVELY CONNECTING SAID LEVER WITH SAID PUSH-PIECE FOR MOVING IT ALONG SAID LINE OF SAID TRACK, WHEREIN THE IMPROVEMENT COMPRISES, THE FACT THAT SAID PUSH-PIECE IS PROVIDED WITH TWO COAXIAL CYLINDRICAL BORES, A FIRST ONE AND A SECOND ONE LOCATED INSIDE THE FIRST ONE, THE PART OF SAID PUSH-PIECE WHEREIN SAID SECOND BORE IS LOCATED INCLUDING AN ANNULAR PROJECTION EXTENDING FROM THE BOTTOM OF SAID FIRST BORE, THE FACT THAT SAID MEANS COMPRISE A FIRST CYLINDRICAL GUIDE PORTION RIGID WITH SAID CONTROL LEVER AND FITTING SLIDABLE IN SAID FIRST CYLINDRICAL BORE, A SECOND CYLINDRICAL GUIDE PORTION RIGID WITH THE FIRST ONE AND LOCATED BETWEEN SAID FIRST GUIDE PORTION AND THE END OF SAID PUSH-PIECE IN CONTACT WITH SAID TRACK, SAID SECOND GUIDE PORTION FITTING SLIDABLE IN SAID SECOND CYLINDRICAL BORE, AND A SPRING FITTING IN THE ANNULAR INTERVAL BETWEEN SAID ANNULAR PROJECTION AND THE WALL OF SAID FIRST BORE.