machines and parts therefor for working metals, metalloids, semiconductors; machines and parts therefor for sawing, cutting, polishing, and lapping; loading bridges and cranes, elevators; transfer devices in the nature of belt conveyors, rope conveyors, chain conveyors, pneumatic conveyors, conveyor tubes and slopes; transporters in the nature of pneumatic, power-operated rail, and power-operated rope transporters; handling apparatus in the nature of power-operating gripping manipulators; machines for washing and cleaning of sawed products; machines for sawing hard materials and materials for the semiconductor industry; machines for orienting and transferring monocrystals for sawing machines and parts therefor; and mechanical controls for machines, machine engines and machine motors