B65H 63/0364

Warning or safety devices, e.g. automatic fault detectors, stop-motions {; Quality control of the package} responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the combination of the detecting or sensing elements with other devices, e.g. stopping devices for material advancing or winding mechanism {by lifting or raising the package away from the driving roller}