Self-propelled vehicles; a practical treatise on the theory, construction, operation, care and management of all forms of automobiles (1906)
Homans, James E. (James Edward), b. 1865 · New York, T. Audel & Company · leaf 502
J*P- SPEEO … Fig. 363.—Diagram of a Typical Four-Battery-Unit, Single-Motor Circuit, showing combi-nations for three speeds. The only changes made in these circuits are in the batteryconnections. For the first speed the battery units are in multiple; for the second,in series-multiple; for the third, in series.…
Automobiles
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