Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 341
1361. STAMP MILL CAM MOTION. —The revolution of two or more cam wipers lifts the .stamphammers to drop by gravity. … 1362. BLACKSMITHS HELPER, or foot helve hammer. Operated by the footon the treadle. Hammer held up by thespring.
Mechanical movements
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