Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 208
740. ARC LIGHT AND REGULATING GEAR Faucault model. The upper carbon runs downby a rack and gear governed by a fly, which isstopped or let go by variations in the current 741. LUMINOUS FOUNTAIN.—The lower end of the jet nozzle is fitted with a strong disc of plateglass. A concave mirror, placed in…
Mechanical movements
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