Method for testing the presence of cigarettes, or their component parts on a transfer drum has the testing system located within the drum

摘要

In the manufacture of cigarettes the articles (14) are transferred on the surface of a drum (10), lying in recesses (13), along which holes exist to the inner volume (20) of the drum. A test facility (24), such as a photo cell, is positioned in this space to detect, through a hole, the presence of a component.