| Perry Fairfax Nursey - 1846 - 650 σελίδες
...excavated material may rise up. The upper end of the hollow rod is connected with a forcepump by jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent of some yards. This boring tube may be either worked by a rotary movement with a turning handle, or by percussion... | |
| 1846 - 910 σελίδες
...material may rise up. The upper end of the hollow rod is connected with a force-pump by jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent of some yards. This boring tube may be either worked by a rotary movement with a turning handle or by percussion with... | |
| 1846 - 586 σελίδες
...material may rise up. The upper end of the hollow rod is connected with a force-pump, by jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent nf some yards. This boring tube may be either worked by a rotatory movement with a turning handle,... | |
| 1847 - 486 σελίδες
...material may rise up. The upper end of the hollow rod is connected with a force-pump by jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent of some yards. This boring tube may be either worked by a rotary movement with a turning handle, or by percussion... | |
| British Association for the Advancement of Science - 1847 - 606 σελίδες
...material may rise up. The upper end of the hollow rod is connected with a force-pump hy jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent of some yards. This boring tube may be either worked by a rotatory movement with a turning handle, or by percussion... | |
| British Association for the Advancement of Science - 1847 - 662 σελίδες
...material may rise up. The upper end of the hollow rod is connected with a force-pump by jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent of some yards. This boring tube may be either worked by a rotatory movement with a turning handle, or by percussion... | |
| 1846 - 648 σελίδες
...excavated material may rise up. The upper end of the hollow rod is connected with a forcepump by jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent of some yards. This boring tube may be either worked by a rotary movement with a turning handle, or by percussion... | |
| 1856 - 540 σελίδες
...The upper end of the hollow rod is connected with a force pump by jointed or flexible tubes, wliicli will follow the descending movement of the boring...boring-rod are of the common kind ; a column of water is sjut down by the pump to the bottom of the bore hole, the water rising in the annular space between... | |
| British Association for the Advancement of Science. Meeting - 1847 - 718 σελίδες
...material may rise up. The upper end of the hollow rod is connected with a force-pump by jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent of some yards. This boring tube may be either worked by a rotatory movement with a turning handle, or by percussion... | |
| 1847 - 1194 σελίδες
...material may rise up. The upper end of the hollow rod is connected with a force-pump by jointed or flexible tubes, which will follow the descending movement of the boring tube for an extent of some yards. This boring lube may be either worked by a rotary movement with a turning handle, or by percussion... | |
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