Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 499
and curves the trade may re(|uire. Themachine is a twin machine, one side, being usuallyused for rights and the other for lefts. The opera-tion is efTected i>y placing the lioot or shoe upon oneof the lasts attached to the machine. The operatorthen places his foot upon the treadle, and the… … mm l^p^.
Mechanical engineering
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