Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 211
759. ELECTRIC-DRIVEN FAN, Edisonmodel. Fan on same shaft with the arma-ture. Ball bearings. Runs with four or-dinary batteries. … 759a. NON-ARCING LIGHT-NING ARRESTER.—This arresteris made up of a number of circulardiscs of non-arcing composition, separ-ated from each other by thin sheets ofmica. A discharge jumps readilythrough these thin sheets of mica,as their combined resistance ismuch less than that of a single sheetof…
Mechanical movements
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