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Words and pictures from “Electric Lighting for Marine Engineers” by Sydney F. Walker, undated but approx. 1890 (a bookseller lists an 1892 edition). Lots of steampunk potential here!
Fig. 72.—Author’s Main Switch—Bent Spring Pattern.Electric Lighting for Marine Engineers (1892)
Fig. 72.—Author’s Main Switch—Bent Spring Pattern.
“Figs. 72 and 75 show the author’s form of large switch.”
Keywords: switches, electrics, diagrams, handles
Places shown: none
Added: 2006-10-06
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Image status: public domain, hence royalty-free stock image; usage credit requested