Single-lens reflex camera

Claim 1

A SINGLE-LENS REFLEX CAMERA HAVING A SHUTTER, A SHUTTER RELEASE BUTTON, A MIRROR, A LIGHT-SHIELDING PLATE AND A FILM-WINDING MECHANISM, SAID CAMERA COMPRISING A SETTING MEMBER SUPPORTED FOR RECIPROCATORY MOVEMENT, AN OPERATING MEMBER SUPPORTED FOR MOVEMENT BETWEEN FIRST AND SECOND POSITIONS, MEANS PROVIDING CONNECTION BETWEEN THE SETTING MEMBER AND THE OPERATING MEMBER TO CAUSE THE LATTER TO BE MOVED BETWEEN THE FIRST AND SECOND POSITIONS THEREOF DURING A SELECTED PORTION OF THE FORWARD AND BACKWARD STROKES OF SAID RECIPROCATORY MOVEMENT OF SAID SETTING MEMBER, MEANS CONNECTING SAID MIRROR AND LIGHTSHIELDING PLATE WITH SAID OPERATING MEMBER TO CAUSE MOVEMENT OF THE MIRROR AND THE LIGHT-SHIELDING PLATE IN ACCORDANCE WITH MOVEMENT OF SAID OPERATING MEMBER, AND A SAFETY DEVICE FOR THE FILM-WINDING MECHANISM OF THE CAMERA INCLUDING A PAIR OF OPERATIVELY INTERCONNECTED PIVOTAL LEVERS BIASED TO ROTATE IN OPPOSITE DIRECTIONS, CAM MEANS MOUNTED ON SAID WINDING MECHANSIM, ONE OF SAID PIVOTAL LEVERS BEING ARRANGED TO ENGAGE WITH SAID CAM MEANS AND THE SHUTTER RELEASE BUTTON, AND A MEMBER ADAPTED TO OPERATE SUBSEQUENTLY TO THE OPERATION OF THE MIRROR AND THE LIGHT-SHIELDING PLATE WITH THE SHUTTER OPERATED AND ENGAGEABLE WITH THE OTHER OF THE PIVOTAL LEVERS.