| http://www.w3.org/ns/prov#value | - A fluid outlet comprising a casing 61 housing a screw conveyor (in this case a pair of intermeshed screw conveyor worms 62 and 63 are illustrated), rotated by a motor and gears (not shown) on suitable shafts 64 and 65 in a direction such as to prevent any solid materials from leaving the main apparatus housing 70.
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