MACHINE TOOLS, NAMELY BORING MACHINES, TURNING MACHINES, TURNING CENTERS, MACHINING CENTERS AND DIAL-TYPE MACHINES FOR ROTATING AND/OR INDEXING WORKPIECES BETWEEN WORK STATIONS, AND ACCESSORIES THEREFOR, NAMELY BORING HEADS, INDEXING TABLES, SPINDLES, SLIDE UNITS, AND TOOL HOLDERS, AND AIRCRAFT AND AEROSPACE ACCESSORIES, NAMELY HOISTS, WINCHES AND ACTUATORS