The elements of dynamic electricity and magnetism (1903)
Atkinson, Philip. [from old catalog] · New York, D. Van Nostrand company · leaf 318
d by Siemens, Brush, andothers, the upper carbon holder is lifted against theforce of gravity by an armature towhich it is attached, which moves ver-tically in the interior of a solenoid coilthrough which the current passes.As the armature is attracted upward,a clutch attached to it grips the…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
