Multiple-part detachable film cartridge or film pack

Claim 1

A FILM PACK ADAPTED TO BE LOADED IN A CAMERA, SAID PACK COMPRISING: A FIRST PART CONSTITUTING A FILM SUPPLY CHAMBER, AND A SECOND PART CONSTITUTING A FILM TAKE-UP CHAMBER; EACH OF SAID PARTS HAVING A SLOT EXTENDING AXIALLY OF THE PART AND SERVING AS A PASSAGEWAY FOR FILM; EACH OF SAID CHAMBERS BEING OPENED AT ONE END AND CLOSED AT THE OTHER END AND HAVING A LID FOR LIGHTTIGHTLY CLOSING THE OPEN END, SAID LID BEING PROVIDED WITH AN L-SHAPED EXTENSION WHICH SLIDINGLY INTERFITS WITHIN THE SLOT TO FORM ONE SIDE OF SAID PASSAGEWAY FOR PURPOSES OF LIGHT PROTECTION AND SECUREMENT OF THE LID TO SAID OPEN END; MEANS FOR DETACHABLY CONNECTING TOGETHER SAID FIRST AND SECOND PARTS AS A PACK, WITH SAID SLOTS BEING IN FACE TO FACE RELATION; AND A ROLL OF FILM MEANS DISPOSED WITHIN SAID SUPPLY CHAMBER AND HAVING A LEADING END EXTENDING FROM THE SUPPLY CHAMBER THROUGH EACH OF SAID SLOTS FOR ATTACHMENT WITHIN SAID TAKE-UP CHAMBER; SAID PARTS ADAPTED TO BE SEPARATED AND PULLED A PREDETERMINED DISTANCE APART FOR LOADING IN THE COMPARTMENTS OF A CAMERA.