Sound film projection system - transfers selected cartridge from magazine to film projector unit which is deactivated on completion of programme

摘要

The film projection system includes a collection of cartridges each containing a film program. The cartridges are stored in a magazine. A selector system permits a particular film program to be chosen and displaces the storage magazine so that the cartridge containing the selected film program is positioned at a transfer point. A transfer mechanism removes the cartridge from the storage magazine and positions the cartridge in a film reproduction unit. The film is then displaced within the cartridge and is reproduced by the unit. Upon completion of the film program, the transfer mechanism removes the cartridge from the film reproduction unit and returns the cartridge to the storage magazine.