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.
[ steam engines, both stationary and marine; compressors for air and other gases; expansion engines; vacuum pumps; internal combustion engines-namely, diesel engines for stationary and marine purposes, gasoline engines, gas engines, dual fuel engines-namely, internal combustion engines for both gaseous and liquid fuels; governors for internal combustion engines; ] power-driven, air-driven, and steam-driven hoists; [ hydraulic presses; hydraulic jacks; marine railway lifts; ] cranes and hoisting implements-namely, mine hoists; [ and truck hoists for lifting rails and connecting ties; marine gears-namely, winches and steering gears; ] ore crushing die stamps; crushing rolls; rock, ore, and gravel crushers-namely, jaw crushers, gyratory crushers, and impact crushers; vibrating screens for screening rocks and ores; jigs and classifiers for separating rocks and ores; centrifugal separators; [ hair felting machines; ] finished castings of ferrous and non-ferrous metals, [ -namely, engine forms, engine parts, and bed plates for machines, shafts used in connection with engines and ship engines; ] gears-namely, reduction gears; [ power saws; ] and thrust bearings [; chain making and assembly machines; track working equipment-namely, cribbing and ballasting machines, adzing machines, track jacks, track grinders, rail grinders, track shovels; tampers, spike drivers, spike pullers, rail drills, track-supported screening assemblies for screening ballast before it is returned to place; nut and bolt screwing and unscrewing devices-namely, power-socket wrenches for nuts and bolts of track rails; ball mills and grinders; and car floor smoothers-namely, vertically-axised cutters with blades ]