High frequency apparatus, design, construction and practical application; a practical treatise for electrical engineers, electricans, physicians, students and experimenters (1920)
Curtis, Thomas Stanley · New York, Norman W. Henley publishing company · leaf 83
of the sections. The form consists of a disc of woo*nailed to one end of a short cylinder of wood and the wholemounted either in the lathe or in bearing supports ashown. The cylinder should be 2^4 i^- in diameter anabout 2 in. long. In starting the winding of a section, the wooden cylinder should… … Fig. 30.—Winding apparatus for secondary sections the removal of the section. The first layer of oiled papermay be wound upon the cord which is pulled out after thesection is finished. In the first paper layer there shouldbe six or eight thicknesses of the oiled paper to make amechanically strong…
Electric apparatus and appliances
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