A Text-book of Coal-mining: For the Use of Colliery Managers and OthersCharles Griffin & Company, 1904 - 563 Seiten |
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Ergebnisse 1-5 von 78
Seite xii
... Cage Cage Chains 297 Method of taking off Strain 298 Adjusting Screws 299 Guides Pulleys Skips and Cages Shape and Construction 291 Expansion 292 Condensation . 293 Compound Engines 296 Winding from Great Depths Blanchet Pneumatic ...
... Cage Cage Chains 297 Method of taking off Strain 298 Adjusting Screws 299 Guides Pulleys Skips and Cages Shape and Construction 291 Expansion 292 Condensation . 293 Compound Engines 296 Winding from Great Depths Blanchet Pneumatic ...
Seite 113
... cage , and allowing a margin for interruptions , the number of tubs to be raised at each lift is easily found . Then , after deciding how many decks or platforms there are to be in the cage , the number of tubs on each deck is ...
... cage , and allowing a margin for interruptions , the number of tubs to be raised at each lift is easily found . Then , after deciding how many decks or platforms there are to be in the cage , the number of tubs on each deck is ...
Seite 126
... cage , unfortunately pass in with equal readiness , and soon choke up the water room , necessitating frequent cleaning out . g A superior construction for larger quantities of water is illustrated in Figs . 115 and 116. For a few ...
... cage , unfortunately pass in with equal readiness , and soon choke up the water room , necessitating frequent cleaning out . g A superior construction for larger quantities of water is illustrated in Figs . 115 and 116. For a few ...
Seite 143
... cage , and made fast by driving an iron pin through the eye of the capping , and usually further secured by glands to the bottom of the cage . The kibble is attached to the other end of the tail - rope , and when the cage is raised by ...
... cage , and made fast by driving an iron pin through the eye of the capping , and usually further secured by glands to the bottom of the cage . The kibble is attached to the other end of the tail - rope , and when the cage is raised by ...
Seite 144
... cage ( an operation done in five minutes ) , the cage lowered to the inset level , and the débris wound to the surface . The above system can only be applied when the pit is not wind- ing coal . In many cases this difficulty is ...
... cage ( an operation done in five minutes ) , the cage lowered to the inset level , and the débris wound to the surface . The above system can only be applied when the pit is not wind- ing coal . In many cases this difficulty is ...
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alternating current amount angle Anthracite apparatus arrangement attached bars bolts boring bottom brake cage carbon carbonic acid carried cent centre chain coal coal-dust coils Colliery compressed connected consists cost cylinder depth distance drill driven drum employed engine explosion feet fire-damp fixed flange friction gear groove haulage hole inclined Inst iron lamp latter length lever lifted load longwall lower Lye Cross machine method mines motor obtained ordinary passes pieces pillars pipes piston placed plate plunger position pressure prevent props pulley pump quantity rails revolutions per minute roads rods roof rope round safety lamp screen screw seams Série shaft shown in Fig side sliding South Wales speed stall steam steel stroke surface timber tippler tool tube valve velocity ventilation vertical water gauge weight wheel winding winding engine wire yards