Sensing bands and commutator system for dryers

Claim 1

A DRYER COMPRISING, A CASING HAVING A REAR BULKHEAD, A HUB CONNECTED TO SAID BULKHEAD, SAID HUB HAVING AN INSULATED INTERIOR SURFACE DEFINING AN APERTURE THROUGH SAID HUB, A DRUM JOURNALED FOR ROTATION ON SAID HUB, SAID DRUM HAVING A PERIPHERAL WALL FOR CONFINING MATERIALS TO BE DRIED IN THE DRUM, INSULATOR MEANS IN THE WALL OF THE DRUM, AT LEAST TWO CIRCUMFERENTIALLY CONTINUOUS SENSING BANDS CARRIED ON SAID INSULATOR MEANS IN SAID DRUM IN SPACED RELATIONSHIP TO ONE ANOTHER, CONDUCTOR MEANS CONNECTING ONE OF SAID BANDS TO GROUND, SAID CONDUCTOR MEANS COMPRISING A ROD CONNECTED TO THE OTHER OF SAID SENSING BANDS AND SAID ROD BEING DISPOSED AT THE AXIS OF SAID DRUM AND EXTENDING THROUGH SAID APERTURE OF SAID HUB AND THROUGH SAID BULKHEAD, A SPRING ARM HAVING A CONTACT MEMBER ENGAGING SAID ROD, THEREBY TO FORM A COMMUTATOR, INSULATOR MEANS FOR MOUNTING SAID SPRING ARM ON SAID BULKHEAD, AND CIRCUIT CONTROL MEANS INCLUDING A DIRST CIRCUIT FOR ENERGIZING THE HEATERS AND THE DRIVE MOTOR OF THE DRYER, A SECOND CIRCUIT INCLUDING SAID SENSING BANDS, A RESISTOR, A CAPACITOR, AND A NEON LIGHT, A THIRD CIRCUIT INCLUDING RELAY-OPERATED SWITCH MEANS FOR CONTROLLING SAID FIRST CIRCUIT, AND A FOURTH CIRCUIT INCLUDING A THERMOSTAT AND SAID DRIVE MOTOR AND CONTROL MEANS RESPONSIVE TO SAID NEON LIGHT FOR CONTROLLING THE ENERGIZATION OF SAID RELAY-OPERATED SWITCH, SAID SENSING BANDS AND THE RESISTOR OPERATING AS A VOLTAGE DIVIDER SO THAT THE VOLTAGE STORED IN SAID CAPACITOR THAT IS APPLIED TO THE NEON LIGHT INCREASES AS THE CLOTHES DRY AND BECOME LESS CONDUCTIVE, SAID CONTROL MEANS OPER-