DISPOSITIVO PER CONTROLLARE LE ESTREMITA DI ARTICOLI DI TABACCO A FORMA DI BASTONCINI IN PARTICO LARE DI SIGARETTE

摘要

Apparatus for determining the mass of tobacco shreds in the end portions of the rod-like tobacco filters of filter cigarettes has a conveyor which transports a series of cigarettes sideways so that the end portions of successive fillers travel between or past two stationary electrodes of a capacitor which is connected with a source of high-frequency voltage serving to establish a high-frequency field in the path of successive end portions. The end portions influence the field to an extent which is indicative of the mass of tobacco therein, and the influence of successive end portions upon the field is evaluated by a circuit which produces signals serving to segregate cigarettes with fillers having defective end portions.