Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1144
nthe starting box, to the motor armature and it begins torevolve, and as we continue to move the arm to the right,the armature gains in speed because we admit more current Electric Motors 1115 to it by cutting ont more and more resistance. When thearmature attains full speedy the arm comes in… … When the armature has attained its normal speed, thestarting box is no longer in use. If for any reason .thecurrent ceases to flow, the little magnet M loses its magnet-ism and releases the arm, which (actuated by a spring)flies back and opens the circuit so that, should the currentsuddenly come on…
