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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 306

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 306
MINING. 299 … 1203. COAL-CUTTING MACHINE, «IngersoU-Sergeantmodel. The piston and drill rod are automatically operated by thealternating motion of two piston valves. Operated by compressedair, and only has to be held against the coal wall to under-cut, whenthe face can be broken down.

Mechanical movements

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