Cushman, Darby & Cushman
Device for monitoring the depletion of material uncoiling from rolls, applicable in particular to wrapping machines
 A sensing facility that is integrated into a station from which strip material is fed to a wrap station, and/or into the roll and shaft from which the strip is effectively uncoiled, is designed to monitor an electrical impedance generated by the roll and shaft and/or linked to their overall radial dimensions. An output signal is triggered when the monitored level of impedance matches a selected reference value. 
G. D. Societa per Azioni
B B
B65H B65H
additional inventional
Antonio Silvano
Gamberini Boriani