. Railway mechanical engineer . on with refer-ence to the visible properties of smoke a corps of from 16 to20 trained smoke inspectors under the supervision of a chief in-spector were engaged in making observations of smoke densityfrom April 22, 1912, to March 14, 1913. Observations of smokefrom locomotive smoke stacks were made at each railroad yard,at each locomotive terminal, and at various points along eachline of railroad within the area of investigation. This area ex-tends to include Evanston, 111., on the north, to Gary, Ind., onthe south, the western boundary passing through Harvey, Bl
. Railway mechanical engineer . on with refer-ence to the visible properties of smoke a corps of from 16 to20 trained smoke inspectors under the supervision of a chief in-spector were engaged in making observations of smoke densityfrom April 22, 1912, to March 14, 1913. Observations of smokefrom locomotive smoke stacks were made at each railroad yard,at each locomotive terminal, and at various points along eachline of railroad within the area of investigation. This area ex-tends to include Evanston, 111., on the north, to Gary, Ind., onthe south, the western boundary passing through Harvey, BlueIsland and La Grange, 111. The whole area was divided intotwo zones, A and B, the former including the city of Chicagoand the latter the territory outside the city limits. The recordsshow that 10,653 observations were made of smoke emissionsfrom steam locomotives in railroad yards and at points on theline, and that observations were made of smoke emissionsfrom locomotives at terminals, a total of 11,976 observations. It. 0 10 20 30 40 60 60 70 80 90 100 Pounds FUEL FIRED PER SQUARE FOOT OF GRATE SURFACE PER HOUR Amount of Solid Constituents of Smoke Emitted by a Locomotiveon a Testing Plant A record of the number of scoops of coal fired was taken, theaverage weight of a scoopful of coal being ascertained by ex-periment, and with this information the relation between thesolid constituents of locomotive smoke and the fuel consumedwas established. Forty-one tests were conducted on steam loco-motives operating in yard and transfer services of Chicago ter-minals. Bituminous coal was used for some of these tests andPocahontas coal for others. Since any method which could be satisfactorily applied inservice was found impracticable for determining the amount ofsolid matter contained in smoke arising from locomotives whileoperating at high speed, data relating to the amount of solidsemitted in smoke at various rates of combustion was secured .1 w run, 1916 RAILWA\ MM HANICAI. EN
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
