7 Motors other than for land vehicles; parts for motors other than for land vehicles, namely, air filters for internal combustion engines, automatic control mechanisms for the control of engines other than for land vehicles, glow plugs for diesel engines other than for land vehicles, machine couplings, machine transmission units, clutches for motors for machines, motor starters, machine cylinders, machine cylinder heads, machine pumps, namely machine vacuum pumps, camshafts for vehicle engines, internal combustion engine parts, namely, pistons, machine fly wheels, engine bearings, valves being parts of machines, namely, vehicle engines, exhaust manifold for engines, fuel injectors for engines, carburetors for engines; power operated jacks; lawn mowers; power operated agricultural implements for attachment to tractors and harvesters; incubators for eggs