Means for obviating the action of heat in a projector upon the backing of the images to be projected

摘要

242,970. PathÚ CinÚma, Anciens Etablissements PathÚ FrÞres. Nov. 15, 1924, [Convention date]. Kinematograph apparatus. -The support for the image being projected is cooled by a current of air which is caused to sweep over the whole of both its faces with a pressure which is substantially the same on both faces. As shown transparent walls 3, 4 are provided in a frame 2 surrounding the support 1. Air is supplied from a lateral conduit 5 and is allowed to escape as indicated by the arrow f. The walls 3, 4 may consist of planoconvex lenses.