A HISTORY OF EDISON'S WEST ORANGE LABORATORY 1887-1931

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" Most Edison's workers were expected able to carry out both research and everyday engineering.^ . This work drew his staff's experience battery manufacture and ore milling.M.I-31 the experimenters also evaluated the cost and availability of its raw materials. He also emphasized economical manufacturing techniques. designed a rheostat for kinetophone road shows, and guide for lining up the sprockets the machine with the aperture. also inspected films. Kennedy's experimental work for the same period included recording of kinetophone subjects and changes lighting make the figures stand out better movies.^ Edison knew well that the commercial success his battery depended on finding cheap and efficient electrochemical reaction. typical report A. Two promising combinations— one using cadmium and another employing cobalt— were rejected because these metals were too expensive use quantity. With this experience behind them, his staff were able move the battery rapidly from laboratory bench factory floor, providing the speed and flexibility demanded the "old man. Kennedy, experimenter assigned the motion picture product, covers work film splicing machine, film cement, and methods sealing film cans. While the chemical research progressed, Edison had his men design special -purpose machines for each step battery production. Since the storage battery required both powdered nickel oxide and ore, Edison's men were able apply many techniques used handling and processing crushed ore