Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 210
754. ELECTRIC PERFORATING PEN, Edison model. Consists of a small pointedtube with a perforating needle on the insidevibrated by a small electro-magnetic motorfixed on top of the pen. A, B, Armaturecoils on iron studs fixed to frame; Q, R, re-volving arm and fly-wheel; Z, commutator;N, M, O, spring… … 755. ELECTRIC HOIST.—The footlever is the friction brake. The left-hand lever is for release, the right-handlever is the starter.
Mechanical movements
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