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Scientific American, Vol. 43, No. 17 (1880) (1880)
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that four lamps have is held closed by been brought up to sliding catches, and over thirty candle power each in a thrown open by a single circuit by the spripg when re- leased, and having machine shown in Fig. 38, and the combined with it a rockshaft and crank lamps have been re- moved from the… … lates to means for rable joint between preventing lateral the platinum elec- © 1880 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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