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 237
to a dangerous extent, depending upon thedegree to which the safe capacity of the machine is exceeded, andheavy sparking of the brushes will also result. If the overloadbe not removed, the insulation of the armature may be destroyed. 656 HAWKINS ELECTRICITY Ques. State some causes of hot bearings.… … Fig. 72S.—Self-oiling and self-aligning bearing. The self-oiling feature consists of rings whichrevolve with the shaft, and feed the latter with oil continually, which they bring up fromthe reservoir below. The dirt settles to the bottom, and the upper portion of the oilremains sufficiently clean…
Electrical engineering
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