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 493
Fig. 3227 is a diagram showing how the strip is moved in the machine. Thestrip is shown at X, in the position which it occupies on the feed-table AB CD. The dotted line a b 472 NAILS AND NAIL MACHINERY. shows the angular position of the strip for the first cut, and the dotted line a d indicates… … lever Tupon its fulcrum S, and the longer arm of this lever moves the table by the links 7, socausing the centre-line of the strip Xto alternately coincide with the dotted lines « b and a d. There-fore the feed-table moves round an imaginary centre at a; and the nail-blanks arc thus cut taper,while…
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