https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85785&pn=317,049 Roller Holder for Photographic Films Patentees: William H. Walker - Rochester, Monroe County NY , George Eastman - Rochester, Monroe County NY Granted:1885-05-05

The Eastman Dry-Plate & Film Co. was the predecessor to the Eastman Kodak Co. Abstract: Our present invention relates to an improved apparatus for exposing sensitive photographic films in the camera, which apparatus is fully described in the accompanying specification and the novel features. Claim: The combination, in an apparatus for exposing sensitive flexible photographic films, of two parallel rollers for operating the film, one of which is provided with a brake or friction device, while the other has applied to it a spring, which maintains the film in tension.
This is one of 85,076 patents currently in the database at datamp.org

]]>