Mining: An Elementary Treatise on the Getting of MineralsLongmans, Green, 1904 - 547 страници |
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Страница xx
... Waggons , or corves 338 444. Tram - axle lubricator 338 445. Jig : plan and section 339 446. Jig - drums 447. Jig - wheel 448. Single - rope haulage 343 343 343 344 FIGURE 449. Tail - rope haulage 449a . Tail - XX LIST OF FIGURES ...
... Waggons , or corves 338 444. Tram - axle lubricator 338 445. Jig : plan and section 339 446. Jig - drums 447. Jig - wheel 448. Single - rope haulage 343 343 343 344 FIGURE 449. Tail - rope haulage 449a . Tail - XX LIST OF FIGURES ...
Страница xxi
... waggons , lashing - chain , etc. 349 350 457. Endless rope : twisting hook 351 457a . Endless rope : general view : rope under tubs 351 458. Endless rope : tongs 351 459. Endless rope : wedge - clips 352 460. Endless rope : Fowler's ...
... waggons , lashing - chain , etc. 349 350 457. Endless rope : twisting hook 351 457a . Endless rope : general view : rope under tubs 351 458. Endless rope : tongs 351 459. Endless rope : wedge - clips 352 460. Endless rope : Fowler's ...
Страница xxiii
... waggons , and rail - guides ( Harris's Navigation ) 538. Wire guides and weights . 429 431 539 . Platform and balance - weights at pit - bottom 431 540. Hydraulic landings ( G. Fowler ) 432 541. Double landings ( fixed ) 542. Cage ...
... waggons , and rail - guides ( Harris's Navigation ) 538. Wire guides and weights . 429 431 539 . Platform and balance - weights at pit - bottom 431 540. Hydraulic landings ( G. Fowler ) 432 541. Double landings ( fixed ) 542. Cage ...
Страница 153
... waggons , the strata above being thrown in a heap behind as the work advances , as shown in the figure . The soil is first of all removed , and is subsequently relaid on the waste - heap , so that the ground which has been mined can be ...
... waggons , the strata above being thrown in a heap behind as the work advances , as shown in the figure . The soil is first of all removed , and is subsequently relaid on the waste - heap , so that the ground which has been mined can be ...
Страница 177
... waggon is then filled with coal , and again sent downhill to the winding shaft . In Pennsylvania there is a splendid seam ... waggons in the waggon - way . It can be stopped by means of a shutter ; some- times the coal at the face of the ...
... waggon is then filled with coal , and again sent downhill to the winding shaft . In Pennsylvania there is a splendid seam ... waggons in the waggon - way . It can be stopped by means of a shutter ; some- times the coal at the face of the ...
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air-current air-road anemometer bars bore-hole boring bottom brattice brick cage capstan cent centre coal measures coal-dust Coal-field colliery compressed conductors cubic foot cylinder Davy lamp depth detonator dirt distance drill driven drum electric engine fire-damp flame flange foot foot-pounds friction fulminate of mercury furnace gauze ground gunpowder haulage heat hole hoppet inches in diameter incline iron ironstone lamp length lifted load lower machine Millstone Grit mineral mines minute outcrop pass Permian pillars pipe piston pit-bottom plate props pulley pump road rocks rods roof rope rule safety-lamp sandstone screw seam of coal shaft shale shown in Fig shows side sinking sometimes speed spur-gearing square inch stalls steam steel stone strata stroke surface temperature thick timber tons tubbing tube upcast valves vein velocity vertical waggons Warwickshire water-gauge wedge weight wheel wire yards
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