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Priority to ES0075653UpriorityCriticalpatent/ES75653U/en
Publication of ES75653UpublicationCriticalpatent/ES75653U/en
Improved device for advancing the film in film projectors, characterized in that the cross-shaped piece of malt, which is mounted on the axis of the roller of advancement of the film, is composed of seven curved sectors and seven radial grooves, interleaved between said sectors, and because its advance drive is effected by means of a single tooth disc or pin pulley, establishing the ratio of seven turns of the pulley for a complete revolution of the axis of the advance roller, corresponding, each change of sector to a movie frame and a complete turn of it to seven movie frames. (Machine-translation by Google Translate, not legally binding)
ES0075653U1959-08-281959-08-28Improved device for film advancement of film projectors (Machine-translation by Google Translate, not legally binding)
PendingES75653U
(en)
Reduced step cinematographic projection machine with head for registration and sound reproduction by magnetic track (Machine-translation by Google Translate, not legally binding)
System of printing and projection of cinematographic films with total elimination of centelleo (Machine-translation by Google Translate, not legally binding)