Permutation switch with a pair of bus bars each having spaced apart integral spring fingers

Claim 1

IN A PERMUTATION SWITCH INCLUDING A HOLLOW CYLINDRICAL CASING CLOSED AT BOTH OF ITS END HAVING A PLURALITY OF CYLINDRICAL TUMBLERS ROTATABLY MOUNTED THEREIN WHICH HAVE CONDUCTING AND NON-CONDUCTING SURFACE PORTIONS, ELECTRICAL CONDUCTORS EXTENDING TO THE INTERIOR OF THE HOUSING, AND A SEMI-CYLINDRICAL MOUNTING PLATE SUPPORTED WITHIN THE CASING AND HAVING A RELATIVELY THICK CHORDAL INNER FACE, THE IMPROVEMENT COMPRISING. A PAIR OF BUS BARS OF FLAT FORMATION THROUGHOUT THEIR LENGTH SECURED TO AND SPACED FROM EACH OTHER BY A DIELECTRIC BONDING MATERIAL THROUGHOUT THE MAJOR PROTION OF THEIR LENGTH AND DIVIDED OUTWARDLY BEYOND ONE END OF SAID BOND INTO TWO CONDUCTIVE TERMINALS ELECTRICALLY CONNECTED TO SAID CONDUCTORS; BOTH BUS BARS BEING BONDED AS A UNIT THROUGHOUT THEIR SAID MAJOR PORTION TO SAID CHORDAL INNER FACE OF SAID MOUNTING PLATE; EACH OF SAID BUS BARS HAVING LATERALLY, OUTWARDLY EXTENDING, SPACED APART INTEGRAL SPRING CONTACT FINGERS CURVED DOWNWARDLY, THE FINGERS OF ONE OF SAID BARS STRADDLING THOSE OF THE OTHER OF SAID BARS TO PROVIDE A SERIES OF PAIRS, EACH FINGER OF SAID PAIR BEING CONNECTED TO A SEPARATE BAR; THE FINGERS OF ONE OF SAID BARS HAVING A COMMON RADIUS OF CURVATURE UNLIKE THE COMMON RADIUS OF CURVATURE OF THE FINGERS OF THE OTHER OF SAID BARS, SAID FINGERS ALL TERMINATING IN TIP ENDS OF ANGULAR FORMATION LYING IN A COMMON PLANE; EACH PAIR OF ADJACENT FINGERS FROM SAID RESPECTIVE BARS BEING IN FRICTIONAL CONTACT IN SAID COMMON PLANE WITH THE CYLINDRICAL PERIPHERY OF ONE OF SAID ROTATABLE TUMBLERS; WHEREBY A MULTIPLE SWITCH CIRCUIT MAY BE PROVIDED BY THE USE OF ONLY TWO INTEGRAL CONDUCTIVE ELEMENTS AND WHEREBY STRESSES APPLIED TO SAID ELONGATED SPRING FINGERS BY THE ROTATION OF SAID TUMBLERS WILL BE ABSORBED BY THE RESILIENCY OF THE SPRING FINGERS WITHIN THE LENGTH THEREOF WITH MINIMAL TRANSFER TO THE BUS BARS AND TO OTHER BONDING COMPONENTS.