Method and apparatus for detecting and removing foreign material

Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Signalling – indicating – or display means

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Details

209581, 209587, 209639, 131108, 131110, 131905, 131290, 131 96, B07C 5342, A24C 539, A24C 536

Patent

active

046571442

ABSTRACT:
A method and apparatus are provided for detecting and removing foreign material which may be found in a stream of particulate matter, such as tobacco. The tobacco is allowed to fall in a cascade past an optical detector. The turbulence of the falling motion brings a large proportion of the particles in the cascade into the field of view of the detector. When foreign material is detected, a signal is generated to activate a fluid blast directed at the portion of the cascade in which the foreign material is located.

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