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 234
orks as an ordi-nary series-wound machine. It was soon found in practice that,owing to the complete magnetic circuit formed by the pair ofmagnets, the changes in the strength of the field were some-what sluggish. This was remedied by nuiking a gap in themagnetic circuit, by boring out the yoke on… … Fig. 49. —Waterhouse dynamo.
Mechanical engineering
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