Photographic cassette for plates and sheet film

Claim 1

A CASSETTE ARRANGEMENT COMPRISING, IN COMBINATION: (A) A SHELL ENCLOSING A SPAC THEREIN, SAID SHELL INCLUDING A COVER MEMBER MOVABLE TOWARD AND AWAY FROM AN OPERATIVE POSITION IN WHICH SAID COVER MEMBER CLOSES AN APERTURE IN SAID SHELL; (B) POSITIONING MEANS MOVABLE TOWARD AND AWAY FROM AN OPERATIVE POSITION FOR POSITIONING LIGHT-SENSITIVE SHEET MATERIAL IN SAID SPACE IN APREDETERMINED POSITION OF BEING EXPOSED TO LIGHT THROUGH SAID APERTURE; (C) SENSING MEANS FOR SENSING THE PRESENCE AND ABSENCE OF SAID SHEET MATERIAL IN SAID PREDETERMINED POSITION; (D) FIRST SIGNALING MEANS OPERATIVELY CONNECTED TO SAID SENSING MEANS FOR GENERATING A FIRST VISIBLE SIGNAL IN RESPONSE TO THE SENSED ABSENCE OF SAID SHEET MATERIAL; (E) SECOND SIGNALING MEANS RESPONSIVE TO SAID MOVEMENT OF SAID POSITIONING MEANS FOR GENERATING A SECOND VISIBLE SIGNAL; (F) THIRD SIGNALING MEANS RESPONSIVE TO SAID MOVEMENT OF SAID COVER MEMBER FOR GENERATING A THIRD VISIBLE SIGNAL; AND (G) A PARTITION DIVIDING SAID SPACE INTO TWO COMPARTMENTS, SAID FIRST, SECOND, AND THIRD SIGNALING MEANS INCLUDING A PLURALITY OF SIGNALING MEMBERS IN ONE OF SAID COMPARTMENTS, SAID SHELL BEING FORMED WITH A WINDOW HAVING A LINE OF VIEW INTO SAID ONE COMPARTMENT, THREE OF SAID SIGNALING MEMBERS CARRYING RESPECTIVE INDICIA, SAID INDICIA WHEN VISIBLE THROUGH SAID WINDOW CONSTITUTING SAID VISIBLE SIGNALS, SAID POSITIONING MEANS AND SAID PREDETERMINED POSITION BEING IN THE OTHER COMPARTMENT, SAID COVER MEMBER HAVING AN EDGE PORTION EXTENDING IN THE DIRECTION OF SAID MOVEMENT THEREOF, SAID EDGE PORTION CONSTITUTING CAM MEANS, AND A SECOND ONE OF SAID SIGNALING MEMBERS BEING MOUNTED IN SAID ONE COMPARTMENT FOR MOVEMENTS TOWARD AND AWAY FROM AN OPERATIVE POSITION THEREOF IN CAMMING ENGAGEMENT WITH SAID CAM MEANS WHEN SAID COVER MEMBER RECIPROCALLY MOVES TOWARD AND AWAY FROM THE OPERATIVE POSITION THEREOF, THE INDICIA CARRIED BY SAID SECOND MEMBER BEING IN SAID LINE OF SIGHT WHEN SAID SECOND MEMBER IS IN THE OPERATIVE POSITION THEREOF AND CONSTITUTING SAID THIRD SIGNAL.