Locking turn key with push button

Claim 1

IN A MANUALLY OPERATED TURN KEY, A SET OF CONTACT SPRINGS TO BE OPERATED, A KEY SHAFT WITH A TURN HANDLE AT ONE END AND A BRACKET WITH AN UPPER AND LOWER BEARING IN WHICH THE SHAFT IS ROTATABLE AND ENDWISE MOVABLE FOR A LIMITED SPACE, SAID SPRINGS MOUNTED ON SAID BRACKET ADJACENT SAID SHAFT, A CAM ON THE SHAFT FOR OPERATING SAID SPRINGS, A PIN ON THE SHAFT AND A CAM SURFACE ON THE UNDERSIDE OF SAID UPPER BEARING, A COIL SPRING SURROUNDING SAID SHAFT AND SECURED AT ONE END TO THE CAM AND AT THE OTHER END TO SAID LOWER BEARING, SAID SPRING EXERTING CIRCULAR AND ENDWISE PRESSURE ON SAID CAM TO HOLD THE SHAFT IN NORMAL ROTARY POSITION AND PRESS THE PIN AGAINST SAID CAM SURFACE, A SLOT IN SAID CAM SURFACE, SAID SPRING HOLDING SAID PIN IN SAID SLOT WHEN THE SHAFT IS TURNED INTO OPERATE POSITION WITH THE CAM OPERATING THE SPRINGS TO LOCK THE SHAFT IN OPERATED POSITION, SAID SPRING EXERTING CIRCULAR PRESSURE TO MOVE THE PIN ALONG THE CAM SURFACE TO NORMAL POSITION WHEN THE SHAFT IS MANUALLY DEPRESSED TO MOVE THE PIN OUT OF THE SLOT.