Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 353
ned over and the cast iron,converted into steel, is poured into moulds. 1426. LENS-GRINDING MACHINE. —The bell-crank arm a is made adjustable in the verticalshaft, and is pivoted for a free motion in the grind-ing cup b^ to give a variety of motions to the cupover the lens; or the operation may be…
Mechanical movements
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![An illustration from Wedding's Basic Bessemer Process. Translated [from the supplement to the author's Darstellung des schmiedbaren Eisens” entitled, “Basische Bessemer oder Thomas Process”] ... by W. B. Phillips ... and E. Prochaska ... With a supplementary chapter on dephosphorization in the basic open-hearth furnace, by E. Prochaska (1891)](https://img.insideoutlibrary.com/img/200/bl-bl_003874923_0-187-1.webp)
