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Scientific American, Vol. 37, No. 25 (1877) (1877)
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s forced in jets is worn out another disk may be inserted at small expense, a through the body of the goods. -:The articles can be passed A Goon bell metal consists of copper 100, tin 20 parts. and without renewing either plate or screw. entirely through, past the rolls, and are car- Among the… … said shafts the bars work freely. The levers, of damp or dry weather, do not appear to be B, Fig. 2, fit over the ends of the shafts; and very modern, They were used as early as 1792. © 1877 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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