Αναζήτηση Εικόνες Χάρτες Play YouTube Ειδήσεις Gmail Drive Περισσότερα »
Είσοδος
Βιβλία Βιβλία 1 - 10 από 10 για ... the strata which have to be encountered. The diameter of the tool is larger than....
" ... the strata which have to be encountered. The diameter of the tool is larger than the diameter of the tubular rod, in order to form around it an annular space through which the water and the excavated material may rise up. The upper end of the hollow... "
The Practical Miner's Guide: Treatise on Mine Engineering, Comprisinga Set ... - Σελίδα 186
των John Budge - 1858 - 191 σελίδες
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο

Iron: An Illustrated Weekly Journal for Iron and Steel ..., Τόμος 45

Perry Fairfax Nursey - 1846
...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...

Journal of the Franklin Institute, Τόμοι 41-42

Franklin Institute (Philadelphia, Pa.) - 1846
...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...

The Chemist, Τόμος 7

1846
...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,...

The American Journal of Science and Arts

1847
...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...

Report

British Association for the Advancement of Science - 1847
...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...

Report of the Annual Meeting

British Association for the Advancement of Science - 1847
...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...

The Mechanic's Magazine, Museum, Register, Journal and Gazette, Τόμος 45

1846
...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...

The Mining Magazine: Devoted to Mines, Mining Operations ..., Τόμος 7

1856
...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...

Report of the Annual Meeting, Τόμος 16

British Association for the Advancement of Science. Meeting - 1847
...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...

Journal of the Franklin Institute, Τόμος 12;Τόμος 42

1846
...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...




  1. Η βιβλιοθήκη μου
  2. Βοήθεια
  3. Σύνθετη Αναζήτηση Βιβλίων
  4. Λήψη PDF