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 802
er r in the plane of the finger I). At the bottom of the lever r is attached anarmature p of a strong magnet A, whose two branches end in soft-ironcores, surrounded with bobbins through which an electric current can besent. The lever r is connected with a stop P, which, being in the planeof the…
Mechanical engineering -- Dictionaries
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-159-97.webp)
