Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1190
Fig. 507 Fig. 508 Fig. 509 between them to reduce the Foucault, or eddy, currents.This insulation is obtained by inserting layers of thin paperbetween the sheets of metal, or by coating the punchingsthemselves. Paper, and similar materials used for thispurpose will in time char from the heat of the…
