RECENT DEVELOPMENTS IN ELECTRIC LIGHTING. current in the external circuit. On the top of the magnets of the exciting machine there is a platform supporting a train of gearing consisting of pivotal support of the commutator brushes by bevel gearing THE ARC ELECTRIC LIGHTCARBONS NATURAL SIZE. MISCELLANEOUS INVENTIONS. M7.9.4.01. lllll INM”14 .___.). ~A!' preventing lateral, scientific american, 1880-10-23
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