Developments in audiovisual equipment program- bles with quick change frame

摘要

The invention relates to a system and mechanism of film feeding, traction, shuttering and adjustment in programmable audiovisual apparatus, with rapid frame change, which executes the indexing of one frame to the next one in accordance with a pre-established programmed signal, indexing only one frame at each signal, characterized by apparatus which renders the time taken to effect the frame change imperceptible and also allowing the establishing of all the stages of projection of animation, varying from one static frame at a time, up to the particular frame change speed desired.