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What is aimed at is the building up of a machine capable of being worked by hand and suitable for experimental purposes. The dynamo-electric machine is one which an amateur mechanician may very ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Chapter IV. treats of those dynamo-electric machines which generate continuous currents, beginning with Pacinotti's machine of 1863, and including the well-known forms of Gramme and Siemens (v.