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 112
rings, madeof India-rubber, and placed so as tooverlap each other. Generally, tworolls of hats are kept in operation,one roll being acted upon while the positions of the hats in the other are being changed. Fig. 2299 represents a machine of this class. Two beaters act upon the ends of the…
Mechanical engineering -- Dictionaries
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