Abstract: In a process for delivering cylindrical containers into machines for further processing, the containers slide into a feed channel under gravity in a random sequence and are transported through this channel in an upright position by the action of an intermittently operating thrust. From the feed channel, the containers are transferred in sequence to a transport carriage equipped with individual holders which are successively positioned in relation to the feed channel. When fully loaded, the transport carriage is driven into the machine for further processing.

Abstract: The device is based on an optical transmission arrangement in which a signal change occurs when a foreign body is present in the liquid. By means of a rotating device the cylindrical container to be tested is set in rotation and subsequently braked. Then optical testing is carried out. The light beams passing through the container are picked up by a plurality of photo electric detectors arranged above one another. The photodetectors are divided into groups, which are each switched on sequentially be a programme control unit from top to bottom to effect the measurement, with one photodector group being switched on when the vortex of liquid occurring as a result of the container rotation has subsided after the standstill of the container and disappeared from the field of view of the photodector group.