7 Chemical processing machines and apparatus; non-electric prime movers, not for land vehicles; parts of non-electric prime movers, namely, water feeding apparatus for boilers, superchargers, superheaters, scale collectors for boilers, carburetors, injectors, exhaust manifold, pistons, fans, turbines, cylinders, radiators, igniting devices, camshafts, boiler tubes; gas turbines not for land vehicles; steam turbines other than for land vehicles; starters for motors and engines; AC motors and DC motors, not including those for land vehicles but including parts for any AC motors and DC motors; alternators; direct current generators