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 796
forced down by foot-pressure and retracted by a spring; and Fig. 3919 is a self-feeding punch, whichfeeds the leather and punches the holes any distance apart for the eyelets.SHUTTLE. See Looms, and Sewing Machines. SIGNALS, RAILROAD. Devices for securing safety upon railroads by communicating…
Mechanical engineering -- Dictionaries
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
