Exposure control mechanism for cameras

Claim 1

IN A PHOTOGRAPHIC CAMERA HAVING A HOUSING, A SHUTTER DEVICE MOUNTED ON THE HOUSING, A MOVING COIL EXPOSURE METER DEVICE MOUNTED IN THE HOUSING ON A ROTATABLE CARRIER AND HAVING A FIRST MOVABLE STOP MEMBER CARRIED BY THE MOVING COIL, A DIAPHRAGM APERTURE IN THE HOUSING, APERTURE SETTING MEANS COOPERABLE WITH SAID FIRST STOP MEMBER OF THE EXPOSURE METER DEVICE, APERTURE DRIVING MEANS RELEASABLE ON OPERATION OF THE SHUTTER DEVICE TO DRIVE THE APERTURE UNTIL AN APERTURE SIZE IS OBTAINED WHICH IS DETERMINED BY THE POSITION OF SAID FIRST STOP MEMBER, AND AN ELECTRIC FLASH-LIGHT CIRCUIT INCLUDING A SWITCH WHICH IS SYNCHRONISED TO CLOSE ON OPERATION OF THE SHUTTER FOR PICTURE TAKING; THE PROVISION OF A PROJECTION ON SAID CARRIER, A SECOND STOP MEMBER ROTATABLY MOUNTED ON THE SAME AXIS AS THE CARRIER, SAID SECOND STOP MEMBER HAVING A FIRST ARM MOVABLE INTO THE PATH OF MOVEMENT OF THE FIRST STOP MEMBER, FOR LIMITING THE NORMAL RANGE OF MOVEMENT OF THE LATTER, AND A SECOND ARM WHICH IS SPRING URGED TOWARDS THE PROJECTION ON THE CARRIER AND A LEVER PIVOTALLY MOUNTED ON THE HOUSING AND ARRANGED TO EFFECT DISPLACEMENT OF SAID SECOND STOP MEMBER WHEREBY IN ONE POSITION OF THE LEVER SAID FIRST ARM IS CLEAR OF THE PATH OF MOVEMENT OF THE FIRST STOP MEMBER DURING NORMAL DAYLIGHT PICTURE-TAKING AND IN ANOTHER POSITION OF THE LEVER SAID FIRST ARM IS SITUATED IN SAID PATH OF MOVEMENT DURING FLASH-LIGHT PICTURE TAKING.