U.S. Philips Corporation

Joannus H Sieben

Franz Werner

Gerhard Maryschka

Cornelis P Van Nie

A magnetic tape cassette having two tape winding reels with associated brake levers pivotable between a disengaged position and a braking position for rotating the reels slightly and tensioning the tape when the cassette is not on a tape apparatus. To obtain a maximum rotation of the winding reels within the available cassette space, the levers are each journalled on a lever mount which can be actuated from outside the cassette to move from a rest position to an operating position in which the brake levers are disengaged, in the rest position the levers engaging at least one control surface in the cassette.

Cassette

A magnetic tape drive system for a video cassette recorder comprises a flip-over magnetic tape cassette having side-by-side reel hubs, each hub having a disc-shaped centering and drive member in the center of the hub with a central centering aperture and one or more drive apertures at some radial distance from the centering aperture, and a drive arrangement with drive spindles having a centering pin for the centering aperture in the reel hub, and at least one resiliently depressable drive pin which engages a drive aperture. To ensure correct positioning and drive of the spools and an excellent lace-up, and prevent undesired variations in the tensile stress in the magnetic tape and thus variations of the stretch of the magnetic tape, the reel hubs are resiliently urged onto stop surface which rotate with the drive spindles. The resilient urging devices and drive apertures are arranged to prevent disturbing forces on the reel hub.

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Eindhoven, Netherlands

Joannus H Sieben