US 4,169,669 AGranted

Film winding device for slide projectors

AssigneeShinano Kikaku Company Limited

InventorsTadakazu Endo, Susumu Nomura, Masato Matsumoto, Kojiro Takahashi

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Abstract

A film winding device for slide projectors of a type using strip films comprising a film housing case capable of being removably fitted to a projector body, a film guide guiding a projected film toward the film housing case, a leading ring mounted rotatably on the end portion of the film guide and capable of leading in the projected film at the tip so as to come to the outside within the film housing case and a roller means arranged so as to be able to positively feed the projected film even in the end portion into the film housing case, whereby the film having finished being projected can be housed successively into the film housing case so as to be projectable without being rewound. In this slide projector, the film to be projected can be easily taken at the tip to the position of the film guide by pushing a button.

Claims8

Dependent claims

A film winding device for slide projectors, comprising:

a projecting frame provided within a projector body;
a film pressing plate means arranged adjacently to said projecting frame and capable of pressing a strip film to be projected against said projecting frame;
a sprocket rotatably mounted on said projector body below said film pressing plate means and capable of feeding said film;
a film guide provided below said sprocket and having one end portion enclosing a part of said sprocket and having the other end portion formed to be spiral and capable of guiding the film fed by the sprocket;
a leading ring secured to the other end portion of said film guide;
a rotary ring rotatably mounted on said leading ring and a film housing case capable of being removably mounted to said rotary ring;
a driving mechanism connected with said rotary ring and capable of rotating as synchronized with said sprocket, whereby said strip film may be successively wound in by the cooperative action of said film guide and leading ring to be positioned so that the tip of the film lies at the outside within said film housing case.

4 more elements

Dependencies are inferred from the claim text.