Knob operated page selection apparatus for automatic phonograph control box

Claim 1

A CONTROL DEVICE OF THE CHARACTER DISCLOSED, COMPRISING IN COMBINATION AN ENCLOSURE, ELECTRICAL CONTROL MEANS THEREIN INCLUDING A PLURALITY OF SWITCHES, A PLURALITY OF PAGES MOUNTED IN THE ENCLOSURE FOR SWINGING MOVEMENT TO EACH OF OPPOSITE LIMIT POSITIONS, THE PAGES BEING OPERABLE FOR ACTUATING CORRESPONDING ONES OF SAID SWITCHES IN MOVEMENT TO AT LEAST ONE OF THEIR LIMIT POSITIONS, THE PAGES HAVING ACTUATING FINGERS EXTENDING INTO A COMMON ZONE, AN ACTUATOR MOVABLE IN SAID ZONE IN EACH OF OPPOSITE DIRECTIONS CORRESPONDING TO RESPECTIVE DIRECTIONS OF SWINGING MOVEMENT OF THE PAGES, AND OPERABLE FOR ENGAGING THE ACTUATING FINGERS AND SWINGING THE PAGES, THE ACTUATOR HAVING A LEADING EDGE EFFECTIVE IN EACH DIRECTION OF MOVEMENT OF THE ACTUATOR,AND THE ACTUATOR HAVING A PORTION RELATIVE TO EACH LEADING EDGE FOR POSITIVELY ENGAGING THOSE PAGES THAT HAVE BEEN MOVED BY THE CORRESPONDING LEADING EDGE AND OPERATIVE FOR RETAINING THOSE PAGES AGAINST MOVEMENT IN THE OPPOSITE DIRECTION UNTIL SO MOVED BY THE OPPOSITE LEADING EDGE, AND MEANS FOR MOVING SAID ACTUATOR, INCLUDING A MANUALLY MANIPULABLE KNOB ON THE EXTERIOR OF THE ENCLOSURE ADAPTED FOR GRASPING BY THE HAND.