Safety device for photographic camera

Claim 1

IN A PHOTOGRAPHIC CAMERA OF THE TYPE INCLUDING THEREIN AN EXPOSURE METER, MEANS FOR RELEASING SHUTTER MEANS, AND A DIAPHRAGM MECHANISM THE COMBINATION OF AN OPERATING MEMBER ADAPTED TO BE OPERATIVELY CONNECTED TO SAID MEANS FOR RELEASING SHUTTER MEANS, AND A ROCKABLE LEVER MEANS RESILIENTLY ENGAGING SAID OPERATING MEMBER AND INCLUDING A CONTROL ELEMENT ADAPTED TO BE CONNECTED TO SAID DIAPHRAGM MECHANISM FOR CONTROLLING A DIAPHRAGM APERTURE, SAID ROCKABLE LEVER MEANS FURTHER INCLUDING RROTRUSION MEANS EXTENDING SUBSTANTIALLY THROUGHOUT AN EFFECTIVE RANGE OVER WHICH AN INDICATOR ELEMENT OF THE EXPOSURE METER CAN BE MOVED AND A WARNING ELEMENT CAPABLE OF ENTERING AN OPTICAL PATH OF A VIEW FINDER SYSTEM, THE ARRANGEMENT BEING SUCH THAT, WHEN SAID INDICATOR ELEMENT IS WITHIN SAID EFFECTIVE RANGE THE OPERATION OF SAID OPERATING MEMBER CAUSES SAID PROTRUSION MEANS TO PRESS THE INDICATOR ELEMENT AGAINST A HOLDING STATIONARY MEMBER TO THEREBY CONTROL THE DIAPHRAGM APERTURE IN ACCORDANCE WITH THE POSITION OF SAID INDICATOR ELEMENT RELATIVE TO SAID PROTRUSION MEANS AND THAT, WHEN SAID INDICATOR ELEMENT MOVES OUTSIDE SAID EFFECTIVE RANGE THE OPERATION OF SAID OPERATING MEMBER CAUSES SAID PROTRUSION MEANS TO BE MOVED SUFFICIENTLY TO BRING SAID WARNING ELEMENT INTO THE OPTICAL PATH OF THE VIEW FINDER SYSTEM.