Warning or safety devices

BPERFORMING OPERATIONS TRANSPORTING B65Thin material handling B65HHANDLING THIN OR FILAMENTARY MATERIAL

B65H63/00Warning or safety devices

B65H63/003responsive to winding of yarns around rotating cylinders B65H63/006quality control of the package B65H63/02responsive to reduction in material tension, failure of supply, or breakage, of material B65H63/024responsive to breakage of materials B65H63/028characterised by the detecting or sensing element B65H63/032electrical or pneumatic B65H63/0321using electronic actuators B65H63/0322using capacitor sensing means B65H63/0324using photo-electric sensing means B65H63/0325using fluid sensing means B65H63/0327using piezo-electric sensing means B65H63/0328using pneumatic sensing means B65H63/036characterised by the combination of the detecting or sensing elements with other devices B65H63/0362by a plate separating the package from the driving drum B65H63/0364by lifting or raising the package away from the driving roller B65H63/0366Braking means for the raised or lifted package B65H63/0368by clutching or de-clutching the package from its driving means (package secured to a rotary driven member) B65H63/04responsive to excessive tension or irregular operation of apparatus B65H63/06responsive to presence of irregularities in running material B65H63/061Mechanical slub catcher and detector B65H63/062Electronic slub detector B65H63/064using capacitor sensing means B65H63/065using photo-electric sensing means B65H63/067using fluid sensing means B65H63/068using piezo-electric sensing means B65H63/08responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle B65H63/082responsive to a predetermined size or diameter of the package B65H63/084responsive to a predetermined weight of the package B65H63/086responsive to completion of unwinding of a package B65H63/088Clamping device