Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 52
BRUSHES ANBCOMMUTATOR … METHODOF MAKING BEARINGS board. Wrap around the armature enough paper, evenly woundon, so that the armature with the paper wrapped upon it shalljust slip into the circular space designed for it. The paper isonly a temporary arrangement for locating the armature in thecenter. Place it so that the…
Electric apparatus and appliances · Electricity
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