The inventions, researches and writings of Nikola Tesla : with special reference to his work in polyphase currents and high potential lighting (1894)
Martin, Thomas C, Tesla, Nikola · The Electrical Engineer · leaf 480
460 INVKNTIONS OB ' NIKOLA TESLA . lating material , serve to insulate the wires from the brass washers . The magnets m and n are made very flat , so that their width exceeds three times their thickness , or even more . In this way a comparatively small number of convolutions is sufficient to pro… … Fig . 284 . Fig . 28 ’ Fig . 288 . The upper pole pieces , m - n , of the magnets are curved , as in dicated in the drawings , Fig . 283 . The lower pole pieces « ? / n ' , are brought near together , tapering toward the armature y , as shown in Figs . 28 + and 28fi . The object of this taper . is…
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