Abstract: An apparatus for automatically taking up and depositing spools consists of a circular cylindrical body having several radially displaceable claws which can be operated by compressed air uniformly distributed over its cylindrical external surface, which claws are pushed outwards against the force of a spring stretched over the external circumference of the circular body, and axially displaceable, so-called holding down elements which are situated between the claws and under the bias tension of springs to push the mounted spool flange against the bent end of the claws.

Abstract: An apparatus for winding a video tape on to the spools of a cassette comprises a winder for winding the video tape on to spools and a "delivery" device for delivering a pair of spools to the winder. The "delivery" device comprises a movable cylinder containing two pistons, which cylinder acts on a swivel arm, the free end of which arm carries a rotatably mounted arm. This arm has a pair of holders for holding the pair of spools and a guide device for guiding the tape leader situated between the spools. The transfer device described above transfers the pair of spools from the container to the pins of the winder and from the winder back to the container after the winding process.

Abstract: A clamping device for hubs for winding magnetic tapes consists of a rotatably mounted block (1) mounted on a circular disc (2), the external circumference of which block is adapted to the internal bore of the winding core (6), said block containing, as clamping elements, two bushings (5,5') situated opposite each other, each of which bushings has two balls (9,9') which bear on the outside against the collar of the respective bushing (5,5') and on the inside against each other by way of a spring (10), the clamping elements being situated at some distance from the circular disc (2) so that the reel hub (6) mounted in position bears against the portion of the ball projecting from the collar of the bushing (5,5') and the bent over edge of the reel hub (6) is pressed by this spherical portion against the abutment (11) formed by the outer circumference of the circular disc (2).