7
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs.
belt and chain take-ups and tighteners, apron and pan conveyers and parts thereof, belt and chain conveyers and parts thereof, belt and chain elevators and parts thereof; bearings, plain and antifriction; conveyer and elevator casings, bins, hoppers, and gates therefor; sprockets of all types for conveyers, elevators, agricultural, oilwell, and mining machinery, and all types of power transmission; clutches for power tranmission; coal, coke, sand, and gravel pockets and screens; concrete mixers and pavers and parts thereof; concrete conveying, distributing, spouting, and finishing machinery and parts thereof; conveying chutes and spouts, conveyer rolls; diaphragm, piston, plunger, and rotary pumps and parts thereof; gears and gearing, pulleys, pumps for concrete and plastic materials and parts thereof, revolving screens traveling water screens and parts thereof, screw conveyers and parts thereof; shaft couplings, collars, hangers, and universal joints; sludge and scum removers for sewage disposal apparatus, truck concrete mixers and agitators and parts thereof, trolley conveyers and parts thereof, ((conveyor and power transmission sprocket chains))