Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in constructive and operative machinery and the mechanical arts, being practically a mechanical dictionary, commencing with a rudimentary description of the early known mechanical powers and detailing the various motions, appliances and inventions used in the mechanical arts to the present time, including a chapter on straight line movements, by Gardner D. Hiscox (1914)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 214
759/?. AMPEREMETER.—Simple formshowing the principle of operation. The at-traction of the electric current in the sole-noid coil, draws the iron core within thecoil against the gravity of the core andframe which sw^ings on a frictionless bear-in o-. … 759c. RECORDING WATT-HOUR METER.—The armature isrotated under the influence of thecurrent in the field coils. The arma-ture spindle drives the recordinggear and dial hands and is regulatedby the constant retarding influenceof a disk revolving on the same spin-dle between the poles of…
Mechanical movements
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