Water Supply: The Present Practice of Sinking and Boring Wells, with Geological Considerations and Examples of Wells ExecutedSpon, 1875 - 217 pages |
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Page 61
... stroke downwards . Fig . 49 . This method has been generally disused , iron or wood rods substituted in the place of the rope , and a variety of augers and chisels instead of the simple chisel , with appliances for clear- ing the bore ...
... stroke downwards . Fig . 49 . This method has been generally disused , iron or wood rods substituted in the place of the rope , and a variety of augers and chisels instead of the simple chisel , with appliances for clear- ing the bore ...
Page 70
... stroke two men stationed at E E turn the rod slightly by means of the tiller D D. A rope F , which is attached to the boring tool , is passed a few times round the drum of a windlass G , the end of the rope being held by a man at I ...
... stroke two men stationed at E E turn the rod slightly by means of the tiller D D. A rope F , which is attached to the boring tool , is passed a few times round the drum of a windlass G , the end of the rope being held by a man at I ...
Page 83
... . 96 . The tube being very small , is in itself capable of containing only a limited supply of water , which would be exhausted by a few strokes of the pump ; the condition. G 2 AMERICAN TUBE WELL . 83 Window Cornices.
... . 96 . The tube being very small , is in itself capable of containing only a limited supply of water , which would be exhausted by a few strokes of the pump ; the condition. G 2 AMERICAN TUBE WELL . 83 Window Cornices.
Page 84
... strokes of the pump ; the condition , therefore , upon which alone these tube wells can be effective , is that there shall be a free flow of water from the outside through the apertures into the lower end of the tube . When the stratum ...
... strokes of the pump ; the condition , therefore , upon which alone these tube wells can be effective , is that there shall be a free flow of water from the outside through the apertures into the lower end of the tube . When the stratum ...
Page 88
... stroke , and maintained in their respective positions by being made in two pieces , of which the inner one worked upon slides , moving freely in the piece that communicated the motion to the striking part of the machinery . The two ...
... stroke , and maintained in their respective positions by being made in two pieces , of which the inner one worked upon slides , moving freely in the piece that communicated the motion to the striking part of the machinery . The two ...
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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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