A Text-book of Coal-mining: For the Use of Colliery Managers and OthersCharles Griffin & Company, 1904 - 563 Seiten |
Im Buch
Ergebnisse 1-5 von 100
Seite xii
... Construction 291 Expansion 292 Condensation . 293 Compound Engines 296 Winding from Great Depths Blanchet Pneumatic System • 286 | 287 288 Flat Ropes Conical and Spiral Drums 290 291 Overbalancing Tail Rope beneath Cages Meinicke System ...
... Construction 291 Expansion 292 Condensation . 293 Compound Engines 296 Winding from Great Depths Blanchet Pneumatic System • 286 | 287 288 Flat Ropes Conical and Spiral Drums 290 291 Overbalancing Tail Rope beneath Cages Meinicke System ...
Seite 30
... wrought - iron lining tubes , weighing about 50 tons , have been forced down a bore - hole in one continuous length . So. Wales Inst . , xi . , 318 . A tool of similar construction was employed at a boring 30 TEXT - BOOK OF COAL - MINING .
... wrought - iron lining tubes , weighing about 50 tons , have been forced down a bore - hole in one continuous length . So. Wales Inst . , xi . , 318 . A tool of similar construction was employed at a boring 30 TEXT - BOOK OF COAL - MINING .
Seite 31
... construction was employed at a boring in Sydney Harbour . It consisted of a pair of mild steel levers hung scissors fashion in a steel tube . On their upper ends , rested a loose metal disc which could be depressed by about an inch by ...
... construction was employed at a boring in Sydney Harbour . It consisted of a pair of mild steel levers hung scissors fashion in a steel tube . On their upper ends , rested a loose metal disc which could be depressed by about an inch by ...
Seite 59
... construction makes it very unlikely to get out of repair . The great advantage of the alternating system is the ease with which currents of high tension can be converted into currents of lower tension , but of a larger quantity . This ...
... construction makes it very unlikely to get out of repair . The great advantage of the alternating system is the ease with which currents of high tension can be converted into currents of lower tension , but of a larger quantity . This ...
Seite 67
... construction , occupy little space , be easily handled , and , above all , the wearing parts should not only be easy of access , but easily replaced when broken . As all the work of the drill is done during the forward stroke , while in ...
... construction , occupy little space , be easily handled , and , above all , the wearing parts should not only be easy of access , but easily replaced when broken . As all the work of the drill is done during the forward stroke , while in ...
Inhalt
1 | |
14 | |
20 | |
38 | |
44 | |
71 | |
83 | |
98 | |
344 | |
350 | |
356 | |
364 | |
374 | |
380 | |
386 | |
408 | |
112 | |
151 | |
157 | |
178 | |
188 | |
194 | |
200 | |
208 | |
226 | |
255 | |
286 | |
298 | |
419 | |
423 | |
429 | |
438 | |
445 | |
467 | |
477 | |
502 | |
519 | |
551 | |
556 | |
559 | |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
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