Abstract: An arrangement for spooling endless band material, particularly for the repeated projection of the full length of cinematograph film required for a complete programme formed as an endless loop, having two double spools each able to carry two film spirals. In a first half of the projection operation Spool 1, Spiral 1, is fed through the projector and taken up as Spool 2, Spiral 1. Simultaneously, Spool 1, Spiral 2, is directly rewound as Spool 2, Spiral 2. Both spools are then reversed and, in the second half of the projection operation, Spool 2, Spiral 2, is fed through the projector and taken up as Spool 1, Spiral 2, and Spool 2, Spiral 1, is directly rewound as Spool 1, Spiral 1. The initial state is re-established and the projection operation is continuously repeatable without rethreading the projector.