Abstract: An audio visual reproduction apparatus utilizing an improved tape and film cartridge which is completely enclosed to be tamper-proof and to be used by inexperienced personnel. The cartridge includes transparent apertures therein for projecting light therethrough to view slide films on an endless disc within the cartridge. A dual track magnetic tape on an endless spool provides audio messages corresponding to the slides to be viewed and control signals for switching the slides to correspond with messages. The reproduction apparatus includes a single drive unit which drives the endless tape and film disc through a slip friction type drive. A cooperating brake insures that the film will be held stationary as the message is being played and allows for change in film through the tape drive upon the presence of a control signal to indicate requirement for switching. The tape, drive and brake are accessable through an aperture in the case covered by a removable shutter.

Abstract: A tape player system of the cartridge type wherein the cartridge is automatically opened and closed when inserted into and removed from the tape player, respectively, and wherein the casing of the cartridge embodies at least one retention element for retainingly engaging, in tangential relation to the hub of the tape reel, a roll of endless tape disposed in the casing.