The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 54
Fig. 30. Weeel Rolling oArmature. … Fig. 32. b or H Ai Armature, Spherical. An armature of a dynamo which iswound on a spherical core, so as to be almost a sphere. It isemployed in the Thomson-Houston dynamo, being enclosed in acavity nearly fitting it, formed by the pole pieces. Armature, Stranded Conductor.. A substitute for…
Electricity
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