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- · New York, T. Audel · leaf 220
or is kept clean and ingood condition. In other dynamos, badly designed or con-structed, sparking occurs at all positions, no matter where the CARE OF THE COMMUTATOR AND BRUSHES 639 brushes are placed, and in such dynamos it is therefore impossibleto prevent this no matter how well they arc… … Fig. 712.—Commutator clamp; a useful device for holding the segments firmly in position intaking out the end rings of the commutator to repair for internal grounds. It is made of2 X J^ inch sheet steel, with a. H inch screw. The illustration clearly shows the adjustablefastening. The notches fit…
Electrical engineering
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