7 [ Crank shafts for use in automobile engines, use in boat engines; camshafts for vehicle engines; fans for motors and engines; Bearings as parts of machines; exhausts for motors and engines; Valves being parts of machines; water heaters being parts of machines; Bellows being parts of machines; Card clothing being parts of carding machines; cylinder heads for engines; hydraulic engines and motors; Compressed air engines being engines powered by compressed air and not being engines for use in land vehicles; engines for boats; driving motors, other than for land vehicles; motors, other than for land vehicles; holding devices for machine tools; pump diaphragms; die-casting tools, namely, steel pins and molding presses being parts of die-casting machines; Hand-held tools, namely, chasers being machine tools, metalworking machine tools, gear cutters being machine tools; injectors for engines; crankcases for machines, motors and engines; Back pressure valves as parts of machines; Clack valves being parts of machines; Pressure reducers as parts of machines; Lasts for shoes being parts of machines; Grease rings, namely, O-rings being parts of machines; gear boxes, other than for land vehicles; Grease boxes, namely, gearboxes other than for land vehicles and journal boxes being parts of machines; Grindstones being parts of machines; pneumatic lubricators being parts of machines; Ignition magnetos for engines; Foundry machines, namely, metal forming machines and milling machines for the treatment of metal, metal working machines; compressed air machines; machine wheelwork; Feeders, namely, mechanical discharging hoppers being parts of machines; motors for boats; clutches, other than for land vehicles; cutting guides for machines in the nature of power tools; Pumps for machines; Pumps as parts of machines, engines, and motors; Vacuum pumps being machines; compressed air pumps; lubricating pumps; Self-regulating engine fuel pumps; centrifugal pumps; Blades being machine parts; bearing brackets for machines; axles for machines; Chucks for power drills; Drill chucks for power drills; pneumatic controls for machines, motors and engines; anti-friction bearings for machines; Roller bearings for machines; Self-oiling bearings being machine parts; Bearings for transmission shafts being parts of machines; Ball-bearings being parts of machines; bearing inserts for air compressor machines; Bushings for use as parts of machines, including compressor crankshaft bushings; Cylinder liners being machine parts for air compressor; Compressor valve heads being machine parts for compressors; Compressor valve heads and pneumatic compressor valve heads being compressor and pneumatic compressor machine parts; Compressor parts, namely, crankshafts, cylinders, and valve heads; Compressor bearing housings, compressor valves, and contour valves, all the foregoing being parts for machines; Emergency valves, namely, valves being parts of air compressors and vehicle engines; Air compressors and vehicle pneumatic compressors; Piston segments being pistons for air compressor; Fitted covers for air compressors; Compressor plate valves being machine parts for compressors; bearings being parts of machines, including sliding bearings for compressors; Pistons for air compressor; Piston sets, being parts of piston groups, for use as machine parts for air compressors; Pressure regulators being parts of machines including air pressure regulators in pneumatic systems; Repair kits for air and hydraulic water compressors consisting primarily of ball-bearings being machine parts for air compressors and pistons being machine parts for hydraulic water compressors; Filters being parts of metal-cutting and air-compressing machines and engines; cylinders for motors and engines; cylinders for machines; Connecting rods for air compressors; Gears being machine parts for air compressors; Drive gears being machine parts for pneumatic air compressors; motors, electric, other than for land vehicles; Crankshafts being machine parts for air compressors ]