Improved photographic film reel reel for revelation. (Machine-translation by Google Translate, not legally binding)

摘要

Improved photographic film reel for developing, of the type consisting of two reciprocally operable discs with reciprocating advance and return movement and having respective spiral film winding guides, essentially characterized by the fact that on the inner side of each disk, next to the edge thereof, in the input slot of the film to the spiral guide, is arranged a small metal roller freely rotating in a box with inclined bottom with descent from the entrance area of the film, under of which upon entering the film and causing the advance of the disc l the roller is pushed by the film and descends by the inclined bottom of the box, which allows the passage of the film that is dragged by the roller, forward and the film is rolled up, while, when the film is pushed back, the roller is dragged by the film, so that the roller ascends through the box. And the space between the roller and the upper part of said slot narrows and the film is pinched and braked, preventing it from retracting and unwinding. (Machine-translation by Google Translate, not legally binding)