Practical electricity .. with questions and answers (1911)
Cleveland armature works, [from old catalog] comp, Lincoln, John C. [from old catalog] · [Cleveland, Ohio, Cleveland armature works] · leaf 245
weather proof, and all working parts that generallyneed attention are made most simple in construction so as torequire the least amount of care. Ball bearings are usedthroughout, reducing bearing friction to a minimum, but in-creasing the life of the bearings, though requiring very littlecare. For… … *^ I ^1 -I I ^1 ^t i 1 I ^^ ^«*^ ^)^^ 235 The magnet frame is usually of cylindrical shape of smalldiameter, resulting in a compact design; its material is caststeel or wrought iron forging and sometimes laminated steelbuilt up in the same manner as the armature core. The endhousings, which contain…
Electricity
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