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 211
Fig. I-i.—Githens ilrill. 194 DRILLS, ROCK. … Figs. 13, 14.— Rio Tinto rock-drill. the corresponding valve at the other end of the cylinder is full open for the admission, the driving air [)ressure being greatly in excess of the strength of the light spring that tends to clo.se the non-return valve. This action takes place alternately at each…
Mechanical engineering
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