ES74716U - Viewer for cinematographic film photographs (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Viewer for cinematographic film photographs, consisting of a general support that serves as a support handle provided on top of a small dark camera after which is forced to go to an endless film so that successive frames happen after an open window in the back of said camera; the endless film is obliged to follow a trajectory in the form of a right triangle maintained in the same according to the greater leg by the pressure of a retention guide consisting of a molded iron finished in its lower part by an elastic spring whose lower end is slightly folded and constitutes the right angle of the trajectory from which point the tape continues on a horizontal path according to the other leg until passing over a drum whose surface is kept adhered by a retaining trigger and which constitutes the second acute angle of the triangle and between which and the upper part of the aforementioned retaining plate follows the path corresponding to the hypotenuse; the actuation of the translation movement of the belt is achieved by means of a simple toothed wheel laterally secured to the sliding drum whose teeth mesh with the corresponding lateral openings of the belt and which is driven at the same time as the drum by a simple crank constituted by a wire bent at two right angles in the form of a ceta; the dark chamber is provided in its anterior part with a small viconove lens and by the outside of a monocular vision screen that allows to cover the space between the eye of the observer and the anterior face of the camera obscura. (Machine-translation by Google Translate, not legally binding)