Electrical motor control system diagram with reversing switch and rheostat 插畫檔

A detailed technical illustration of an electrical motor control system, featuring two large motors, a reversing switch, a rheostat, and multiple circuit connections. The diagram shows the internal wiring and mechanical components of the apparatus, with a focus on the electrical pathways and control mechanisms. The image is presented as a schematic, with clear labels and lines indicating the flow of current and the function of each part. The visual style is precise and schematic, typical of early 20th-century engineering diagrams. Historical illustration reproduced from a publication from France.