 ... small scale. The Author, some years later, devised the grouting apparatus first used in the City and South London tunnels, Fig. 17, Plate 2. A cylindrical vessel, capable of withstanding a pressure of 70 Ibs. or 80 Ibs. per square inch, has through...  Shield and Compressed Air Tunneling - Page 202by Bertram Henry Majendie Hewett, Sigvald Johannesson - 1922 - 465 pagesFull view - About this book
 | James Henry Greathead - 1896 - 122 pages
...Ibs. or 80 Ibs. per square inch, has through ita axis a shaft or spindle working in a stuffing-box at each end of the vessel, and provided at one or...discharged by compressed air through a length of flexible hosepipe ending in a branch and nozzle, the nozzle being inserted in holes in the tunnel lining provided... | |
 | Institution of Civil Engineers (Great Britain) - Civil engineering - 1896 - 626 pages
...Ibs. or 80 Ibs. per square inch, has through its axis a shaft or spindle working in a stuffing-box at each end of the vessel, and provided at one or...discharged by compressed air through a length of flexible hosepipe ending in a branch and nozzle, the nozzle being inserted in holes in the tunnel lining provided... | |
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