7 Crank shafts for engines; axles for machines; transmission shafts, other than for land vehicles; connecting rods for machines, motors and engines; gear boxes, other than for land vehicles; cylinders for motors and engines; belts for machines; fan belts for motors and engines; fuel conversion apparatus for internal combustion engines; torque converters, other than for land vehicles; anti-friction bearings for machines; reduction gears, other than for land vehicles; anti-pollution devices for motors and engines; control mechanisms for machines, engines or motors, namely, hydraulic controls for motors and engines; ejector vacuum pumps; filters being parts of machines or engines; filters for cleaning cooling air, for engines; clutches, other than for land vehicles; current generators; parts of engines, namely, sealing joints for engines; shaft couplings for machines; couplings for machines, other than for land vehicles; emergency power generators; stands for machines; injectors for engines; lubricators being parts of machines; engines for boats; machine tools, namely chasers; igniting magnetos for engines; propulsion mechanisms, other than for land vehicles, namely, injectors for engines; transmissions, other than for land vehicles; motors for boats; motors, electric, other than for land vehicles, namely injectors for engines; electric motors for machines; aeronautical engines; pistons for machines or engines; pistons for cylinders; pistons for engines; pumps for machines; water pumps for machines, engines or motors; speed governors for machines, engines and motors; pressure reducers as parts of machines; cylinder heads for engines; transmissions for machines; turbines, other than for land vehicles; valves being parts of machines; pressure valves being parts of machines