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Scientific American, Vol. 65, No. 4 (July 1891) (1891)

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An illustration from Scientific American, Vol. 65, No. 4 (July 1891), 1891, leaf 0
r, having a first in order, with a probable purchase to follow. knife edge which readily enters between the The engravings are one-third the actual size, switch tongues. The switch has a T-handle of linear measurement. hard rubber, by means of which it is turned. A SIDE VIEW OF FIELD MAGNET, PARTLY… … portion of the standard magnet are attached pieces (Continued on page 54.) SMALL EDISON DYNAMO OR MOTOR. ©1891 SCIENTIFIC AMERICAN, INC.

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