Agricultural implements other than hand-operated, namely, conveyors; electromechanical food preparation machines, namely, conveyors or vibrating feeding apparatus for bulk goods; vibrating extractors for use in mines; cargo handling apparatus for unloading granular or powdery goods; vibrating conveyors for engine boilers; cleaning apparatus, namely, vibrating floors for emptying granular or powdery goods from containers; dust exhausting installations for cleaning purposes; electric machines a...