Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 753
0.—Thomson-Houston street car motor. with the perfect gradation of resistance, it is not a serious objection, and the additional sim-plicity in manufacture is important. … Fni. 10.—Short raihvsiy motor. In actual operation in street-car work, l^e i)lates shown in Pig. 8 are duplicated on theswitch-cylinder, and the lower connections reversed, so that a single movement of the oneswitch, without the op-eration of any otherswitches, ace omplishestlie full set of changes…
Mechanical engineering
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