Transparency changer for overheat transparency projection - has clear transparency pocket and is in form of file with lower and top parts

摘要

The file (4) lower part (2) can be deposited onto a face (5) of the overhead projectors (7) plane, next to the projector working face (9). The overhead transparencies (10) are individually foldable onto the working face. The top part (3) is hinged to the lower part end (11), away from the working face. At the top part end (12) facing the working face is fitted an annular bracket (13) for foldable holding and guiding of the transparencies in perforations (15) such that for projection the top part is lifted almost vertically. Thus the transparency is lifted but is laid automatically into the file by air resistance during dropping. ADVANTAGE - Simple transparency change, using one hand only.