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Priority to ES1972178954UpriorityCriticalpatent/ES178954Y/en
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Publication of ES178954YpublicationCriticalpatent/ES178954Y/en
Improvements introduced in projectors for reproduction, characterized in that the projector is constituted by an arm with both enlargements in both of them, one of which has a through hole, being able to slide on a perforated tube, in turn, on a vertical stem fixed to the support platform being able to be positioned correlatively to each other, the arm, the tube and the shank, by means of the corresponding transversal screws of tightening; the opposite widening of said arm constitutes the cassette holder and has a central opening on which a glass diffuser of the light of the lamp housed in the screen superimposed on said cassette holder is fixed, which also has a cavity that allows the transversal sliding of the chassis porta-transparencies; all this so that, by means of the telescopic play of the arm holder on the freely fretted tube on the support stem and the correct focus made by the rack/s provided with a rack on which a control guided by a lateral projection of the cassette holder acts, appropriately modify the size of the projection. (Machine-translation by Google Translate, not legally binding)
ES1972178954U1972-04-011972-04-01
IMPROVEMENTS MADE IN PROJECTORS FOR REPRODUCTION.
ExpiredES178954Y
(en)
Projection device of continuous development with optical compensation for multiple objectives. (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of fixed view projectors for opaque and transparent bodies (Machine-translation by Google Translate, not legally binding)
Carbon arc lamp with an optical system in gimbal suspension and an electromagnet for stabilizing the arc, in particular for cinematographic projection apparatus.