. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . range. It is seldom, however, sufficiently sensitive to current fluctuations toserve alone as a means of regulation. It is therefore put under the control of a shunting con-tact, operated bv what is termed a current-controller magnet. The controller-nuignet () is constructed of two helices C C\ placed side by side and serving as solenoids attractinginto their interior a double-core B, the parts of wliich are y
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . range. It is seldom, however, sufficiently sensitive to current fluctuations toserve alone as a means of regulation. It is therefore put under the control of a shunting con-tact, operated bv what is termed a current-controller magnet. The controller-nuignet () is constructed of two helices C C\ placed side by side and serving as solenoids attractinginto their interior a double-core B, the parts of wliich are yoked together and suspended byan adjustable spring, S, from the support above. The yoke carries a contact-point on its un-der side, and a stationarv contact-point, 0, is mounted immediately thereunder. When thesecontact-points are touching each other they complete a shunt-circuit of practically no resist-ance around the coil K of the regulator-motor magnet (Fig. 36). To avoid .sparks at the con-tacts, a permanent shunt of carbon coils, inclosed in glass tubes, is connected around thecontacts. The connections are exhibited in Fig. 38, where K is the commutator, C C the mag-.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
