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 395
agnets is shown in Figs. 2965 and 2966. The effective power and usefulness of the load-stone are greatly increased by the armatures a and b, Fig. 2965, as will be explained in consideringartificial magnets. The loadstone should have its polar faces ground flat, and be mounted in thearmatures, which… … rfllli ness. The tops of the armatures are bound together by a brass cap A />, with a ring 7? for purposesof suspension, and the lower portions by a brass band C D passing just above the feet. The magnetmay be strengthened up to a certain point, or its power preserved, by the addition of a…
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