WEB WINDING MEANS

A cartridge for winding a filmstrip includes a flangeless core rotatably supported at one portion only between a pair of stationary, parallel end walls. The longitudinal axis of the core assumes a tilted position relation to a normal to the walls upon rotation of the core to wind filmstrip thereon. The lateral edges of the outer convolutions of wound filmstrip engage diagonally opposed portions of the end walls to maintain the convolutions in accurate alignment between the walls. In one embodiment, the filmstrip is guided onto the unsupported portion of the core to engage only one end wall.