Method and apparatus for detecting and removing foreign...

Details Method and apparatus for detecting and removing foreign... Method and apparatus for detecting and removing foreign...

B - Operations, Transporting

07

C

341/56, 340/124.

B07C 5/342 (2006.01) A24B 1/04 (2006.01)

Patent

CA 1243752

- 19 - METHOD AND APPARATUS FOR DETECTING AND REMOVING FOREIGN MATERIAL FROM A STREAM OF PARTICULATE MATTER Abstract of the Disclosure 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 par- ticles 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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