Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 98
Fig. 96 Fig. 97 on the bend ; in this position pulling off and putting on the keeperhas no effect; move it to position shown in illustration, and a slighteffect is felt when the keeper is pulled off or put on. Moving it alongVOL. T. 81 F Steel Magnets Permanent to various positions right up to the…
Electrical engineering · Electric power
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