Photographic camera provided with interchangeable lens systems

Claim 1

IN A PHOTOGRAPHIC CAMERA, THE COMBINATION WITH AN INTERCHANGEABLE LENS SYSTEM PROVIDED WITH AN ADJUSTABLE DIAPHRAGM, OF MEANS PROVIDING FOR FLASH BULB EXPOSURE OPERATION AND FOR A PLURALITY OF OTHER OPERATIONS INCLUDING A MANUAL DIAPHRAGM ADJUSTMENT INCLUDING A DIAPHRAGM PRESELECTION, AND AN AUTOMATIC EXPOSURE ADJUSTMENT, INCLUDING ON SAID LENS SYSTEM A ROTATABLY ADJUSTABLE RING (19) FOR SAID DIFFERENT OPERATIONS, SAID ADJUSTING RING EXTENDING CONCENTRICALLY ABOUT THE OPTICAL AXIS OF SAID LENS SYSTEM, CAMS ON SAID ADJUSTING RING, MEANS FOR AUTOMATICALLY ADJUSTING SAID DIAPHRAGM WITHIN THE RANGE OF SAID FLASH BULB EXPOSURE OPERATION, SAID MEANS INCLUDING ADJUSTABLE SCANNING ELEMENTS ENGAGING SAID CAMS ON SAID ADJUSTING RING, THE LATTER HAVING GUIDE NUMBERS AND A DIAPHRAGM SCALE THEREON, WHILE ANOTHER SCANNING ELEMENT ENGAGES A CAM ON A DISTANCE ADJUSTING RING (1) ARRANGED ADJACENT SAID FIRST MENTIONED ADJUSTING RING, AN INTERMEDIATE RING (94) MOUNTED WITHIN THE CAMERA AND CONTROLLED BY A SCANNING DEVICE COOPERATING WITH THE MOVABLE HAND OF A MEASURING INSTRUMENT OF AN EXPOSURE METER, AND PIVOTALLY MOUNTED LEVERS INFLUENCED BY SAID SCANNING ELEMENTS AND CARRIED BY SAID LENS SYSTEM FOR ADJUSTING SAID DIAPHRAGM WHEN SAID FLASH BULB EXPOSURE OPERATION AND SAID AUTOMATIC EXPOSURE OPERATION IS USED.