Tape guiding and tension controlling cassette assembly

In a tape cassette assembly having base and cover elements forming a case, there being a first rotatable tape reel mounted within the case, the reel having an axis of rotation, the tape adapted to pass by a front edge of the case and to wind on a pack on said reel, said front edge registrable with a play back head, the improvement comprising

• a. a first tape follower bodily movable within the case to guide the tape approaching the pack on said reel,
• b. there being first guide means carried by the case and directed toward that portion of the reel which is between said axis and the rear edge of the case remote from said front edge of the case, thereby to guide bodily movement of the follower along the guide means in arcuate directions toward and away from the reel, said first guide means including a pair of tracks on one of said elements and interfitting said follower at two guide locations.