The Construction of Drum Armatures and Commutators

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IN the preface to this book we are told that it is intended as “a useful guide or introduction to those who may ultimately wish to proceed with the mathematical treatment of the subjects,” and further, that “the beginner will read these pages during the early period of his training, while he is studying his mathematics, and so may combine the two together at a later and more advanced stage.” To such this work can be recommended, for the author has collected a good deal of information, which is well illustrated by woodcuts, showing how different makers have built up their armatures and commutators, thus giving the student a variety of experience in this direction.

Drum Armatures and Commutators.

By F. M. Weymouth. (London: The Electrician Printing and Publishing Co., 1893.)

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  1. 1

    See Proceedings of the Roayl Society, vol. li. p. 49.

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