Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 721
before becoming fatigued. The following table shows: 1, the actual drilling time employed on each day,by which is meant the exact period interveningbetween the insertion of the drill and its removal,and the time during which the blow-pipe was used; 2, the working time, which includes the… … DATE. Actual Drilling Time. Working Time. Penetration. Number of Drillsused. Hrs. Min. 2 586 9 4 8 3 13 25 5 430 17 Hrs. Min. 3 51)7 52 4 2!) 3 26 4 106 49 17 53 Inches. 0.1)375 1 5125 0.26 0.14 0.47 0.54 0.03 1434171322241 O « 3... 4 6 8 Totals. . 25 41 B.69 125 It was considered as proved that no…
Mechanical engineering -- Dictionaries
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