Water Supply: The Present Practice of Sinking and Boring Wells, with Geological Considerations and Examples of Wells ExecutedSpon, 1875 - 217 pages |
À l'intérieur du livre
Résultats 1-5 sur 39
Page 2
... raised , and their channels of efflux , instead of being swollen suddenly like the bed of a torrent , carry off the surplus water gradually . An Artesian well , so called from the province of Artois , in France , is a shaft sunk or ...
... raised , and their channels of efflux , instead of being swollen suddenly like the bed of a torrent , carry off the surplus water gradually . An Artesian well , so called from the province of Artois , in France , is a shaft sunk or ...
Page 56
... raised through water . To remedy this defect the eminent well - sinker , Thomas Docwra , ( designed and introduced the improved mizer , shown of the usual dimensions in Figs . 31 to 36 ; Fig . 31 being a plan at top , Fig . 32 an ...
... raised through water . To remedy this defect the eminent well - sinker , Thomas Docwra , ( designed and introduced the improved mizer , shown of the usual dimensions in Figs . 31 to 36 ; Fig . 31 being a plan at top , Fig . 32 an ...
Page 58
... raised and lowered with that tool . The cutting end of the picker is frequently replaced by a scratcher , Figs . 44 , 45. This useful tool rakes or scratches up the débris thrown by the mizer beyond its own working range , and causes it ...
... raised and lowered with that tool . The cutting end of the picker is frequently replaced by a scratcher , Figs . 44 , 45. This useful tool rakes or scratches up the débris thrown by the mizer beyond its own working range , and causes it ...
Page 61
... raised by means of the treadle , the spring - pole imparts to it a sudden return , and increases by these means the velocity of the bit , and consequently that of the stroke downwards . Fig . 49 . This method has been generally disused ...
... raised by means of the treadle , the spring - pole imparts to it a sudden return , and increases by these means the velocity of the bit , and consequently that of the stroke downwards . Fig . 49 . This method has been generally disused ...
Page 62
... raised at once and worked gradually and carefully until the hole is as it should be . The description of strata being cut by the chisel can be ascer- tained with considerable accuracy by a skilful workman from the character of the shock ...
... raised at once and worked gradually and carefully until the hole is as it should be . The description of strata being cut by the chisel can be ascer- tained with considerable accuracy by a skilful workman from the character of the shock ...
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Autres éditions - Tout afficher
Water Supply: The Present Practice of Sinking and Boring Wells. With ... Ernest Spon Affichage du livre entier - 1885 |
Water Supply: The Present Practice of Sinking and Boring Wells. With ... Ernest Spon Affichage du livre entier - 1885 |
Water Supply: The Present Practice of Sinking and Boring Wells, with ... Ernest Spon Affichage du livre entier - 1875 |
Expressions et termes fréquents
Banister Fletcher beds Blue Clay Boilers bore-hole boring rod boring tool boring-head bottom Brewery brick brickwork bucket Butte-aux-Cailles cast-iron chalk chisel Civil Engineers cloth CONTENTS Construction crown 8vo cuts depth Ditto Edmund Sharpe excavation feet deep feet O.D. flints foot Formulæ gallons a day gallons a minute grapnel gravel greensand Grey Hedgerley hole Hydraulic illustrated inches diameter Isometric Projection joint Keuper length lever London clay lower Lower Tertiary Machinery Marl means Mechanical Memoranda mottled clays numerous OOLITE outcrop passed Passy Pebbles pipe piston plates Pocket-Book post 8vo pump quantity Railway rainfall READING BEDS RED SAND red sandstone River rock rope royal 8vo Screw Propeller screwed second edition sewed shaft shell shown in Fig sinking Slide Steam steining stone strata stratum stroke sunk surface Surface Condensers Tables thickness tion trepan tubbing tube upper valve vertical water-bearing strata Waterworks weight wood engravings wrought-iron yield
Fréquemment cités
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