7 Mechanical storage, conveying and feeding apparatus and machines, and mechanical apparatus and machines for handling workpieces and parts therefor, namely, mechanical gears being parts of machines, step gears being parts of machines, chain boxes being parts of machines, powered electrical or hydraulic, slip ring transmitters or rotary joints or transfer systems, for the transfer of currents, electrical signals or media from a fixed to a continuously rotating part, powered lifting tables, electrical lifting tables, hydraulic lifting tables, slip ring transmitters lifting tables, rotary joints lifting tables, electrical signals lifting tables, tables, lifting rotary tables, walking beam conveyors, machine tools for locating, indexing or positioning devices for sensing of positions, namely rotary index machines for transferring work pieces and index drive machines in the nature of machine tools, drum motors being parts of machines, lifting and lowering conveyors, accumulating conveyors, roller conveyors, lifting shuttles being parts of machines, timing belt conveyors, rotary indexing tables, globoidal index drives, globoidal rotary tables, disc cam mechanisms being parts of machines, longitudinal drives being parts of machines, large-scale rotary tables; mechanical storing, conveying and feeding apparatus and machines, and mechanical apparatus and machines for handling workpieces and parts therefor, namely, rotary tables for foundries