WIND MILLS AND OTHER WIND POWERED ELECTRICITY GENERATORS, AND PARTS AND ACCESSORIES THEREFOR, NAMELY, MILL TOWERS AND MASTS, BLADES, BLADE HUBS, MILL HOUSINGS, MACHINE BEDS, YAW RINGS AND GEARS, ADJUSTMENT MECHANISMS FOR SETTING THE PITCH OF THE WINGS, BRAKES AND BRAKE DEVICES, MAIN SHAFTS, CARDAN JOINTS, TRANSMISSION CASES, CLUTCHES AND ELECTRIC GENERATORS AND RESERVE ELECTRICAL POWER SUPPLY PLANTS