CORRECTIVE RIBBON ROLLER FOR WRITING MACHINE

摘要

The invention relates to rollers for corrugating ribbons. It relates to a roller in which the hub 2 is intended to support an interchangeable spoke 5 to a tongue 11 provided with a projection intended to be pierced. IN A HOLE 21 OF A CAP 7 THAT PREVENTS THE OUTPUT OF THE SOUL 5. ACCORDING TO THE INVENTION, THE SHAPE OF THE PROJECTION AND HOLE IS SUCH AS THE CAP CAN NOT BE REMOVED BY APPLYING A TRACTION FORCE BUT ONLY BY APPLYING A ROTATION FORCE. / P P APPLICATION TO CORRECTIVE RIBBONS FOR WRITING MACHINES. / P