Photographic camera with unitary shutter and diaphragm

Claim 1

EXPOSURE CONTROL MECHANISM FOR PHOTOGRAPHIC CAMERAS OF THE TYPE HAVING A CAMERA BODY CONTAINING MEANS FOR SUPPORTING A PHOTOSENSITIVE SHEET AND A LENS BODY CARRIED BY THE CAMERA BODY AND HAVING A LENS ADAPTED TO FORM ON THE PHOTOSENSITIVE SHEET AN IMAGE OF THE OBJECT TO BE PHOTOGRAPHED, AND WHICH CAMERA BODY CONTAINS A MOVABLE MIRROR WHICH IN NORMAL POSITION OBSTRUCTS LIGHT FROM REACHING THE PHOTOSENSITIVE SHEET AND REFLECTS THE LIGHT TRANSMITTED THROUGH SAID LENS TO THE EYE OF THE USER FOR VIEWING AND FOCUSING, TOGETHER WITH MEANS FOR MOVING SAID MIRROR AWAY FROM SAID LIGHT OBSTRUCTING POSITION AND LATER BACK TO LIGHT OBSTRUCTING POSITION, COMPRISING THE COMBINATION OF A SINGLE SET OF FULLY CLOSABLE LIGHT CONTROLLING BLADES SUPPORTED WITHIN SAID LENS BODY ADJACENT SAID LENS, AN OSCILLATABLE DRIVEN MEMBER WITHIN SAID LENS BODY DRIVINGLY CONNECTED TO SAID BLADES TO CLOSE SAID BLADES WHEN OSCILLATED IN ONE DIRECTION TO A CERTAIN POSITION AND TO MOVE SAID BLADES TOWARD OPEN POSITION WHEN SAID DRIVEN MEMBER IS OSCILLATED IN THE OTHER DIRECTION, THE EXTENT OF OPENING OF SAID BLADES BEING PROPORTIONAL TO THE EXTENT OF OSCILLATION OF SAID DRIVEN MEMBER, NORMALLY ARRESTED MOTIVE POWER OPERATED MEANS WITHIN SAID CAMERA BODY INCLUDING MEANS TO MOVE SAID MIRROR, AND AN OSCILLATABLE DRIVING MEMBER IN THE CAMERA BODY DRIVINGLY CONNECTED TO SAID DRIVEN BLADE OPERATING MEMBER CARRIED BY THE LENS BODY, SAID POWER OPERATED MEANS INCLUDING MEANS WITHIN THE CAMERA BODY FOR OSCILLATING THE OSCILLATABLE DRIVING MEMBER AND CONSEQUENTLY THE DRIVEN MEMBER TO VARIABLE EXTENTS AND IN EITHER DIRECTION IN SUCH A WAY THAT SAID DRIVEN MEMBER NORMALLY HOLDS SAID BLADES IN FULLY OPEN POSITION, THEN CLOSES SAID BLADES FULLY, THEN OPENS SAID BLADES TO AN ADJUSTABLE PREDETERMINED EXTENT, THEN CLOSES SAID BLADES FULLY AND THEN OPENS SAID BLADES FULLY.