7 [ Machines and mechanical apparatus for the maintenance, care, repair and assembly of motor vehicles and motor vehicles parts in motor vehicle workshops, namely, power operated torque wrenches, power operated ratchets, power operated lifts, hoists and jacks for automobiles, power impact wrenches, power ratchet wrenches, power screwdrivers, and power drills; balancing machines, namely, for motor vehicle wheels, namely, apparatus used to balance wheels for motor vehicles; assembly machines and automatic assembly machines, namely, power operated assembly device, namely, an intake and exhaust air flow vane assembly device for use in internal combustion engines, transmission systems, wheels, tires, and other automotive parts; apparatus and machines for automatic handling of tools and work pieces, namely, mechanical handling gears and machines for use in transmission gears for machines, gears and enclosed drives for industrial machinery; tire changing machines, namely, power operated tire mounting machines; mechanical test rigs, namely, for testing brakes, power and exhaust values of motor vehicles; mechanical vehicle test rigs; mechanical test beds for testing the main components of engines in vehicles; mechanical power-measuring test rigs; lifting platforms, namely, for lifting motor vehicles; dividers, namely, dividing attachments and circular tables for machine tools in the nature of power operated milling machines and power operating milling machines attached to circular tables, and rotary tables especially designed to hold powered machine tools; tire milling machines; and clamping apparatus for metal working machines, namely, metal clamps used for holding piece parts on machine tool tables ]