Chicago : Engineering and Contracting Pub. Co. · leaf 48
18 x 11 in. diameter, 12-in.stroke, 125 r. p. m., with a capacity of 440 cu.ft. at 10,000 ft. elevation. This sized compressor gives a reserve of 21per cent, and costs with freight from Denverto Cripple Creek $1,903. The motor for thecompressor is 80 hp., 900 revolutions per min-ute. 440 volts, and… … — Z4--4--Fig. 1—Prospect Head Frame. tance, two skips are added to the equipment.These weigh 550 lbs., hold 10 cu. ft. (930 lbs.),and cost $60 each, with an addition of $10 forwater valve. With these skips it is proposed to hoist allthe material broken in the drifts and to handlethe small amount of…
Buildings
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