Device for separating hard objects, such as stones, from a...

Details Device for separating hard objects, such as stones, from a... Device for separating hard objects, such as stones, from a...

B - Operations, Transporting

07

C

209/30

B07C 5/34 (2006.01)

Patent

CA 1321167

ABSTRACT OF THE DISCLOSURE A device is disclosed for separating hard objects, such as stones, from a stream of wood in an apparatus for conveying or manipulating logs or blocks of wood including a conveyor section. The device includes a transducer disposed in a location suited for the detection of vibration. The transducer registers acoustic vibrations and is connected to a control unit by means of which hard objects conveyed along with the wood stream can be detected on the basis of the vibration signals they generate. The control unit is also used to control an exit gear incorporated in the conveyor section, so that hard objects which are detected will fall down from the stream of wood passing through the apparatus. The invention eliminates the need to build water-operated stone catchers as conventionally used for the removal of stones.

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