Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 568
ne of Holtz inits original form is shown inthe accompanying figure. Itsprincipal parts are, first, athick circular plate of glass,secured by four horizontalsupports vv v ■v1 forming partof a frame 5 second, a verythin and rotating disk ofglass, fixed to an axis, whichpasses through the thick… … Holtzs Electrostatic Induction Machine. 552 PARIS UNIVERSAL EXPOSITION. server in this perspective view, but is very near it; third, two sets ofpoints, or electrical combs, in insulating supports, and with bindingscrews for the attachment of conducting wires C and C ; fourth, twoopenings or…
Machinery · Scientific apparatus and instruments
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