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 120
2315, differs chiefly from other ma-chines of its class in the operationof the bandintr-ring. To make asharp edge at the junction of thebrim and side-crown is the specialobject of blocking; and althoughthe crown is also shaped, that partof the work is already done on thestretcher. The framing of… … .2315.
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