 | Perry Fairfax Nursey - 1846 - 650 σελίδες
...with it all the drilled particles.' On this principle I started to establish a new method of boring. The apparatus is composed of a hollow boring rod,...perforating tool, suited to the character of the strata which have to be encountered. The diameter of the tool is larger than the diameter of the tubular rod,... | |
 | 1846 - 586 σελίδες
...with it all the drilled particles." On this principle I started to establish a new method of boring. The apparatus is composed of a hollow boring rod,...perforating tool, suited to the character of the strata which have to be encountered. The diameter of the tool is larger than the diameter of the tubular rod,... | |
 | 1846 - 910 σελίδες
...with it all the drilled particles. On this principle I started to establish a new method of boring. The apparatus is composed of a hollow boring rod,...perforating tool, suited to the character of the strata which have to be encountered. The diameter of the tool is larger than the diameter of the tubular rod,... | |
 | 1847 - 486 σελίδες
...v/ith it all the drilled particles.' On this principle I started to establish a new method of boring. The apparatus is composed of a hollow boring rod,...perforating tool, suited to the character of the strata which have to be encountered. The diameter of the tool is larger than the diameter of the tubular rod,... | |
 | British Association for the Advancement of Science - 1847 - 606 σελίδες
...with it all the drilled particles.' On this principle I started to establish a new method of boring. The apparatus is composed of a hollow boring rod,...perforating tool, suited to the character of the strata which have to be encountered. The diameter of the tool is larger than the diameter of the tubular rod,... | |
 | 1846 - 648 σελίδες
...with it all the drilled particles.' On this principle I started to establish a new method of boring. The apparatus is composed of a hollow boring rod,...perforating tool, suited to the character of the strata which have to be encountered. The diameter of the tool is larger than the diameter of the tubular rod,... | |
 | British Association for the Advancement of Science - 1847 - 662 σελίδες
...with it all the drilled particles.' On this principle I started to establish a new method of boring. The apparatus is composed of a hollow boring rod, formed of wrought iron tubeâ screwed end to end : the lower end of the hollow rod is armed with a perforating tool, suited... | |
 | 1856 - 530 σελίδες
...paper written by M. Arago, and read by Mr. Vignoles, at the meeting of the British Association in 1640. The apparatus is composed of a hollow boring rod,...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... | |
 | 1856 - 540 σελίδες
...written by M. AMITO, and read by Mr. Vignoles, at the meeting of the British Association in 1S4M. Tlie apparatus is composed of a hollow boring rod, formed...hollow rod is connected with a force pump by jointed or flexible tubes, wliicli will follow the descending movement of the boring tube for an extent of some... | |
 | Henry Pitman - 1856 - 1048 σελίδες
...at the meeting of the British Association in 1846. The apparatus is composed of a hollow boring-rod, formed of wrought iron tubes screwed end to end. 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... | |
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... it all the drilled particles. On this principle I started to establish a new method of boring. The apparatus is composed of a hollow boring rod, formed of wrought iron tubes screwed end to end : the lower end of the hollow rod is armed with a perforating... 
