The actual conditions and technological issues for domestic Electrical works in the Early Meiji era

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This report shows that traditional craft techniques from the Edo era contributed to successful early modernization of Japanese electrical industries, and argues that lack of coordination between science and Engineering on material science posed an obstacle to next growth of Electrical industry.And it has been understood that a Brush type arc lamp at The National Museum of Nature and Science was made by a design based on US patent No. 473 283 which was planned by Thomas E. Adams and that another Brush type arc lamp at the Electric Power Historical Museum in Japan had the “Ring clutch" mechanism which was designed by Charles Francis Brush.