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 40
... rope , a pulley - block or a windlass , and barrows or other means of conveying the mate- rial extracted away from the mouth of the sinking . After all the preliminary arrangements have been made , the sinking is commenced by marking ...
... rope , a pulley - block or a windlass , and barrows or other means of conveying the mate- rial extracted away from the mouth of the sinking . After all the preliminary arrangements have been made , the sinking is commenced by marking ...
Page 60
... rope or wire - rope , and which was originally made for hoop - iron . At A , Fig . 49 , is represented a log of oak wood , which is set perpendicularly so deep in the ground as to penetrate the loose gravel and pass a little into the ...
... rope or wire - rope , and which was originally made for hoop - iron . At A , Fig . 49 , is represented a log of oak wood , which is set perpendicularly so deep in the ground as to penetrate the loose gravel and pass a little into the ...
Page 61
... rope , is used , the diameter of the drum of the windlass used must be sufficiently On large to prevent a perma- nent bend in the iron . the opposite side of the windlass is a lever of un- equal leverage , about one- third at the side ...
... rope , is used , the diameter of the drum of the windlass used must be sufficiently On large to prevent a perma- nent bend in the iron . the opposite side of the windlass is a lever of un- equal leverage , about one- third at the side ...
Page 64
... rope and lower it over the broken rod , when the rod cants the ring , and thus gives it a considerable grip ; this is often very successful . Fig . 57 is a worm used for the same purpose . A bell - box , Fig . 60 , is frequently ...
... rope and lower it over the broken rod , when the rod cants the ring , and thus gives it a considerable grip ; this is often very successful . Fig . 57 is a worm used for the same purpose . A bell - box , Fig . 60 , is frequently ...
Page 68
... rope , as in the Chinese method . Referring to Fig . 83 , A is the boring tool ; B the rod to which the tool is attached ; D D the levers by which the men E E give a circular or rotating motion to the tool ; F , chain for attaching the ...
... rope , as in the Chinese method . Referring to Fig . 83 , A is the boring tool ; B the rod to which the tool is attached ; D D the levers by which the men E E give a circular or rotating motion to the tool ; F , chain for attaching the ...
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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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