ENDLESS TAPE CARTRIDGE

An endless magnetic tape cartridge is formed of a top and bottom, each having a pair of openings, which are mutually aligned when the top and bottom are joined to define an oblong case with two through apertures positionable on a conventional two-shaft tape recording and reproducing device. An endless tape coil is carried in one end of the cartridge on a reel rotatable about one of the apertures while a pin at the other end of the cartridge pivotally mounts a sector-shaped plate which in turn rotatably mounts an auxiliary capstan and resiliently biased pinch roller. The auxiliary capstan has a toothed center opening to be driven by one shaft of the recorder while the reel idly turns about the other shaft of the recorder when the cartridge is placed in the device so that tape is withdrawn from the inner convolution of the tape coil past guide means, a magnetic head, a driving capstan, then between the auxiliary capstan and pinch roller to return to the outer convolution of the tape coil.