SCUFFED CONTAINER DETECTOR

摘要

Apparatus for detecting scuff conditions in the wall of a transparent container in which the container is moved through an inspection station where a well defined narrow light beam is angularly projected onto the container in the area where scuffing generally occurs so that when the scuffing is objectionable, it produces a secondary light emitting area. Light sensing means is focused on the inspection station to respond to the secondary light emitting area when caused by an objectionable scuffed condition, the sensing means being located to one side of the axis of the light beam so it is not activated when the light beam passes through a container not scuffed or only lightly scuffed.