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Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 339
-. … 1362. BLACKSMITHS HELPER, orfoot helve hammer. Operated by the footon the treadle. Hammer held up by thespring.Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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