Edison's phonomotor which used the energy generated by speech to drive a flywheel. Edison claimed the power could be used to drill a hole in a wooden wall, or other small tasks. Paris, 1878.

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Keywords: archival, archive, century, edisonphonomotorenergyspeechflywheelpowerwomengenderpunchlondon19th, edisons, energy, generated, historical, history, phonomotor, speech