Operating mechanism

Claim 1

IN AN OPERATING MECHANISM FOR USE WITH A MOVABLE DEVICE ADAPTED TO MOVE FROM A FIRST POSITION TO A SECOND POSITION A TO RETURN TO ITS FIRST POSITION, IN COMBINATION, A SUPPORT ADAPTED FOR FIXED MOUNTING WITH RESPECT TO SAID MOVABLE DEVICE, A MEMBER MOUNTED ON SAID SUPPORT AND MOVABLE FROM A FIRST POSITION TOWARD A SECOND POSITION WITH RESPECT TO SAID SUPPORT, BIASING MEANS FOR RETURNING SAID MEMBER TO ITS FIRST POSITION, A LEVER PIVOTALLY MOUNTED ON SAID MEMBER AND PIVOTABLE FROM A FIRST POSITION TOWARD A SECOND POSITION, SAID LEVER WHEN IN ITS FIRST POSITION BEING ADAPTED TO ENGAGE SAID DEVICE, OVERCENTER BIASING MEANS CONNECTED BETWEEN SAID SUPPORT AND SAID LEVER FOR PIVOTING SAID LEVER OUT OF ENGAGEMENT WITH SAID DEVICE AS SAID MEMBER MOVES A PREDETERMINED DISTANCE FROM ITS FIRST POSITION TOWARD ITS SECOND POSITION, SAID OVERCENTER BIASING MEANS BEING FURTHER ADAPTED TO PIVOT SAID LEVER BACK TO ITS FIRST POSITION WHEN SAID MEMBER HAS RETURNED TO ITS FIRST POSITION, MEANS ON SAID SUPPORT FOR PREVENTING SAID LEVE RFROM PIVOTING OUT OF ENGAGEMENT WITH SAID DEVICE UNTIL SAID MEMBER HAS MOVED A PREDETERMINED DISTANCE TOWARD ITS SECOND POSITION, SAID LAST RECITED MEANS BEING FURTHER ADAPTED TO PERMIT SAID LEVER TO RETURN TO ITS FIRST POSITION WHEN SAID MEMBER RETURNS TO ITS FIRST POSITION, FIRST STOP MEANS ON SAID MEMBER TO MAINTAIN SAID LEVER IN ITS SECOND POSITION WHEN THE LEVER HAS PIVOTED THERETO, AND SECOND STOP MEANS ON SAID LEVER TO LIMIT PIVOTAL TRAVEL OF SAID LEVER AS IT RETURNS TO ITS FIRST POSITION FROM ITS SECOND POSITION.