Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 105
. 343 shows a brush holder of the spring arm type. Thebrush is firmly attached to the extremity of a spring arm, theother end of which is secured to the brush spindle, and whenonce adjusted is not capable of movement about the brushspindle. In the box type of brush holder as illustrated in fig.… … Fig. 346.—Fort Wayne type MPL dynamo; view showing details of armature, commutatorand brush rigging of large machine. The laminations of the armature core are punchedfrom thin sheet steel, annealed and japanned. Spacing ribs are built into the core atproper intervals forming air passages for…
Electrical engineering
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