Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 805
magnet XX becomesexcited, it produces a mfee&g-mPJlS*^fall of the disk of thesafety signal, which isthus displayed as seenin dotted line. At thesame time the circuit-closer H swings fromthe position indicatedby a full line to theposition H, shown indotted line, and thusbreaks the… … V ; %Jp_ GTHMhJD _ Safety Sigmc tt? 0*rrr/?y rt>a_J7T{..K. £jNG£/l S/GAfAC qucnt strokes of the remaining wheels are without effect. At the same time that the above is accom-plished, the spring circuit-closer T of the safety signal closes another circuit and establishes a cur- SILK-SPINNING…
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