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 579
feed-rolls over which the board passes. As A1 are the upper feed-rolls, which are actuated by expansiongearing (Fiff. 3425) in connection with the lower rolls, and which bear upon the surface of the boardwith an adjustable weighted pressure (shown in Fig. 3424), allowing them to be set at any…
Mechanical engineering -- Dictionaries
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