Canadian engineer . m as fel i l*Aj i f w ^^^Nv \. ^^Bi£„*- HMMUL. ? Two 1,000 horse-power Motors driving Compressors at .Cobalt Station. they were not considered sufficiently reliable. During aperiod of twelve months the extremes of temperature mayamount to as much as 150 degrees Fahrenheit, and, in orderto take care of the excessive expansion and contraction, thepipe lines were zig-zagged, and, although the plant hasbeen in operation over two years, no trouble has yet beenexperienced. There is at times in the pipe line a small accumulationof water, and, while this is not sufficient to affect
Canadian engineer . m as fel i l*Aj i f w ^^^Nv \. ^^Bi£„*- HMMUL. ? Two 1,000 horse-power Motors driving Compressors at .Cobalt Station. they were not considered sufficiently reliable. During aperiod of twelve months the extremes of temperature mayamount to as much as 150 degrees Fahrenheit, and, in orderto take care of the excessive expansion and contraction, thepipe lines were zig-zagged, and, although the plant hasbeen in operation over two years, no trouble has yet beenexperienced. There is at times in the pipe line a small accumulationof water, and, while this is not sufficient to affect the mines,it gave trouble by freezing in the winter time and stoppingup the pipes. This difficulty was overcome by the appli-cation of an electric heater, the design of Mr. James Rud-dick the former general superintendent of the the lowest points of the pipes a M-inch cock is placed,so that the water will drain both ways to it. This cock isleft slightly open all the time, and during the winter it it. View showing Ten-inch Pipe Line, with Electric Heater,. 2,200 Volt Electric Pole Line, and 44,000 Volt Double Transmission Line, in Cobalt Camp. kept warm and prevented from freezing by the use of theelectrical heater. Automatic traps are being installed totake care of the accumulation of water in the warm weatherThe air is delivered to the mines at 100 pounds pres-sure, and practically atmospheric temperature. The com-pany endeavored to get high-pressure air meters, with theintention of selling the air at 24 cents per thousand cubic June 20, 1912. THE CANADIAN ENGINEER 8,7 feet of air compressed to 100 pounds pressure. These werefound impracticable, however, and the air is now sold onthe basis of $2 per drill per shift.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishertoron, bookyear1893
