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"...in which is shown as electromagnet mounted with its poles in proximity to those of a steel magnet, and connected with a driving-wheel and belt, by which it can be given a rapid rotary motion, so that its poles alternately rotate past those of the steel magnet, producing an alternate reversal of polarity in its core by which an alternating current is generated in its coils." -Atkinson 1903

Dynamo

"...in which is shown as electromagnet mounted with its poles in proximity to those of a steel magnet,…

"If an electromagnet be subsituted for the steel magnet as shown...and the terminals of its coils connected with the brushs as shown each magnet will generate a current in the coils of the other magnet." -Atkinson 1903

Dynamo

"If an electromagnet be subsituted for the steel magnet as shown...and the terminals of its coils connected…

"Potent is when the field is covered with figures of potents, or crutches. Potent is now an obsolete word ... Potent, like vair, is of the alternate tinctures of argent and azure."—Aveling, 1891

Potent Shield

"Potent is when the field is covered with figures of potents, or crutches. Potent is now an obsolete…