A Text-book of Coal-mining: For the Use of Colliery Managers and OthersCharles Griffin & Company, 1904 - 563 Seiten |
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Seite xii
... Pumps Bucket Pumps Plunger Pumps 375 Riedler Pump . · 375 Holst Pump Stocks or Trees Joints Supporting Pipes in Shaft Spear Rods Guides and Banging Beams • 382 Effect of Acid Water Connections to Rods 383 Valves • 383 Quadrants and ...
... Pumps Bucket Pumps Plunger Pumps 375 Riedler Pump . · 375 Holst Pump Stocks or Trees Joints Supporting Pipes in Shaft Spear Rods Guides and Banging Beams • 382 Effect of Acid Water Connections to Rods 383 Valves • 383 Quadrants and ...
Seite 23
... pump by means Drawing up sand pump , of rods , 14 79 24 99 Changing the chisel , 3 Letting down the chisel , Connecting the beam , 14 5 Total , 85 99 He had observed the same operation performed in Pennsylvania with a rope , at a depth ...
... pump by means Drawing up sand pump , of rods , 14 79 24 99 Changing the chisel , 3 Letting down the chisel , Connecting the beam , 14 5 Total , 85 99 He had observed the same operation performed in Pennsylvania with a rope , at a depth ...
Seite 25
... pumping and rotating and raising the rods , thus dividing and minimising the risk of breakages . The drill is usually ... pump is made at the tee d , and to the exhaust at e . The inlet valves are numbered 1 and 2 and the outlet ones 3 ...
... pumping and rotating and raising the rods , thus dividing and minimising the risk of breakages . The drill is usually ... pump is made at the tee d , and to the exhaust at e . The inlet valves are numbered 1 and 2 and the outlet ones 3 ...
Seite 31
... pump , when the lower ends of the levers were swung outwards through two slots in the steel tube . Cutting diamonds were set on the extreme edges of the levers . When the reamer is being lowered down the bore the levers hang inside the ...
... pump , when the lower ends of the levers were swung outwards through two slots in the steel tube . Cutting diamonds were set on the extreme edges of the levers . When the reamer is being lowered down the bore the levers hang inside the ...
Seite 33
... pump , Putting in casing , Fishing up broken tools , Small repairs to engine and rig , 190 days 8 hours . 42 21 " " I 15 31 201 265 , 12 99 The actual drilling averaged 10 feet 6 inches for 24 hours , while the greatest distance done in ...
... pump , Putting in casing , Fishing up broken tools , Small repairs to engine and rig , 190 days 8 hours . 42 21 " " I 15 31 201 265 , 12 99 The actual drilling averaged 10 feet 6 inches for 24 hours , while the greatest distance done in ...
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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