Improvements in electric motor control circuits operated by series-parallel controllers of the tramway type and the like

摘要

199,680. Edwards, W., Etheridge, L., and Baker, J. A. Feb. 17, 1923. Series-parallel systems.-In tramcar motor control systems comprising front and rear motors C, D and front and rear controllers A, B, the circuit connections are arranged in the order ADC (when controller A is in use) or BCD (when controller B is in use), the motor at the end remote from the controller coming next in order of connections.