Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 190
AIR POWER APPLIANCES. l8l … 672. PNEUMATIC HAM-MER.—-Constructed on simi-lar lines with No. 673, withthe addition of a counter-balance piston, C, which, by-its reaction and cushion, re- lieves the body of the tool and the hand from excessive jar.
Mechanical movements
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