Some improvements in the intermittent moving mechanisms of the film of the machines to project. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in the intermittent film drag mechanisms of the projection machines, which are characterized by the film being operated by a comb with hooks that fit into the perforations of the film; resolving the movement of hooking hooks perpendicular to the film; the advance of it parallel to its plane; the disengagement perpendicular to this plane; and its recoil parallel to it; these four times being achieved by two coaxial heart-shaped eccentric ones, one of which acts on a horizontal rectangular fit of the hook holder and the other vertical rectangular fitting of the same hook holder. (Machine-translation by Google Translate, not legally binding)