Tuning mechanism

Claim 1

A TUNER FOR CONTROLLING THE TUNING OF A WAVE SIGNAL RECEIVER, COMPRISING: A FREQUENCY SELECTOR INCLUDING A DISPLACEABLE TUNING ELEMENT HAVING A DRIVEN PORTION TO BE ENGAGED BY A DRIVING MEMBER TO EFFECT DISPLACEMENT OF SAID TUNING ELEMENT AND TUNING OF SAID SELECTOR; A MOVABLE STATION SELECTOR HAVING A PLURALITY OF OPERATING POSITIONS IN ONE OF WHICH SAID FREQUENCY SELECTOR IS OPERATIONALLY INCLUDED IN THE CIRCUITRY OF SAID RECEIVER TO CONTROL THE TUNING THEREOF TO A PRESELECTED STATION FREQUENCY; A TUNING SHAFT HAVING A DRIVING MEMBER AND NORMALLY RETAINED IN A REST POSITION WITH SAID DRIVING MEMBER OUT OF THE PATH OF RELATIVE MOVEMENT BETWEEN SAID DRIVING MEMBER AND SAID DRIVEN PORTION BUT DISPLACEABLE TO AN OPERATIVE POSITION IN WHICH SAID DRIVING MEMBER MECHANICALLY ENGAGES SAID DRIVEN PORTION OF SAID TUNING ELEMENT DURING INTERVALS IN WHICH SAID FREQUENCY SELECTOR IS OPERATIONALLY INCLUDED IN THE CIRCUITRY OF SAID RECEIVER; AND AN ACTUATING MECHANISM COMPRISING A ROTATABLE CONTROL SHAFT COUPLED TO SAID TUNING SHAFT AND MEANS RESPONSIVE SOLELY TO ROTATION OF SAID CONTROL SHAFT FOR DISPLACING SAID DRIVING MEMBER TO ITS OPERATIVE POSITION AND ACTUATING SAID DRIVING MEMBER TO DRIVE SAID DRIVEN PORTION OF SAID TUNING ELEMENT.