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Scientific American, Vol. 92, No. 25 (June 1905) (1905)

leaf 8

An illustration from Scientific American, Vol. 92, No. 25 (June 1905), 1905, leaf 8
l percentage of the third speed the motors are in parallel on half the bat- in the truck we illustrate it does n'jt exceed 3 per cent. original fiber constituted the cellulose of commerce. tery. The fourth speed finds the fields in parallel and armatures in series on the whole battery of 42 cells,… … ington Avenue, which is paved with cobblestone and Closing the Lid of a Watch without Breaking the Crystal. has a 15 per cent grade, was mounted with the con- Type of Wheel Used for Light Vehicles. Perfect Motor Control. troller on the fourth speed with a current consumption

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