Photographic camera with means for setting a diaphragm automatically in accordance with a range setting

Claim 1

A PHOTOGRAPHIC CAMERA COMPRISING, IN COMBINATION, AN AUXILIARY ELECTRIC LIGHT SOURCE OPERATIVELY ASSOCIATED WITH SAID CAMERA; AN EXPOSURE METER INCLUDING AN INDICATOR MOVABLE RELATIVE TO A SCALE HAVING CONSECUTIVE FIRST AND SECOND RANGES, THE FIRST RANGE REPRESENTING VALUES OF AMBIENT LIGHT ADEQUATE WITHIN THE RANGE OF POSSIBLE TIME-EXPOSURE COMBINATIONS OF THE CAMERA, AND THE SECOND RANGE REPRESENTING VALUES OF AMBIENT LIGHT INADEQUATE WITH THE RANGE OF POSSIBLE TIME-EXPOSURE COMBINATION OF THE CAMERA; AN ENERGIZING CIRCUIT FOR SAID SOURCE; A NORMALLY OPEN SWITCH DEVICE IN SAID CIRCUIT; MEANS OPERABLE, RESPONSIVE TO MOVEMENT OF SAID INDICATOR INTO SAID SECOND SCALE RANGE, TO CLOSE SUCH SWITCH DEVICE; AN OBJECTIVE; AN OBJECTIVE DIAPHRAGM; RANGE SETTING MEANS FOR SAID OBJECTIVE; SCANNING MEANS OPERABLE TO SCAN THE POSITION OF SAID INDICATOR; MEANS OPERABLE, IN ADVANCE OF SAID SCANNING, TO LOCK SAID INDICATOR IN ITS INDICATING POSITION; TRANSMISSION MEANS INTERCONNECTING SAID SCANNING MEANS AND SAID DIAPHRAGM TO ADJUST THE APERTURE OF SAID DIAPHRAGM IN ACCORDANCE WITH THE SCANNING POSITION OF SAID SCANNING MEANS; AND MECHANISM INCLUDING SAID INDICATOR, OPERABLE WHEN SAID INDICATOR IS POSITIONED WITHIN THE RANGE OF INADEQUATE AMBIENT LIGHT VALUES, TO OPERATIVELY ASSOCIATE SAID SCANNING MEANS WITH SAID RANGE SETTING MEANS TO RESTRICT MOVEMENT OF SAID SCANNING MEANS TO A POSITION CORRESPONDING TO THE RANGE SETTING OF SAID OBJECTIVE.