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Priority to ES0256640ApriorityCriticalpatent/ES256640A1/en
Publication of ES256640A1publicationCriticalpatent/ES256640A1/en
New device for dragging the film in photographic machines, which is characterized by being formed by a hollow drum of a diameter such that the development of its lateral surface is equal to or greater than the length of two frames, giving this drum a slot according to the generator that does not reach either of the two bases, and inside is fixed a spring that crosses the groove inside and serves as a presser of the end of the film, completing this drum with the arrangement on its axis of a mechanism of ratchet and of another that immobilizes it every half turn. (Machine-translation by Google Translate, not legally binding)
ES0256640A1960-03-181960-03-18New movie drawing device in photographic machines (Machine-translation by Google Translate, not legally binding)
ExpiredES256640A1
(en)