. Railway mechanical engineer . phon being formed with aseparate neck and expanded into the diaphragm plate, alsobeing riveted and welded as shown. This is for the purposeof giving more flexibility to the installation, and also to en-able the manufacturers, by eliminating the flanged portionof the Beck and making the neck long enough to fit extremecases, to standardize the manufacturing forms and die?. Test Conditions .^xd MethodsThe test runs were conducted between Milwaukee andPortage, Wis. The distance westbound was miles andeastbound miles. There was no attempt to control themake
. Railway mechanical engineer . phon being formed with aseparate neck and expanded into the diaphragm plate, alsobeing riveted and welded as shown. This is for the purposeof giving more flexibility to the installation, and also to en-able the manufacturers, by eliminating the flanged portionof the Beck and making the neck long enough to fit extremecases, to standardize the manufacturing forms and die?. Test Conditions .^xd MethodsThe test runs were conducted between Milwaukee andPortage, Wis. The distance westbound was miles andeastbound miles. There was no attempt to control themakeup of the test trains. The tonnage wlis limited to whatthe engines could handle on the ruling grade, and trains werertm as extras with whatever cars were available. Two tripseastbound and two westbound were made with each locomo-tive, the same engine crew being used on all the tests. Aroad foreman of engine? acted as cab obser\er and all otherreadings were taken by employees of the test department un-. Fig. 1—Firebox of Chicago. Milwaukee & St. Paul Locomotive Equipped with Nicholson Thermic Syphons The locomotives tested were of the Consolidation type,using saturated steam and equipped with piston valves andWalschaert valve gear. They were alike in all respects ex-cept that the firebox of locomotive 7615 was equipped withthe Nicholson Thermic S)phons supporting the brick arch,while 7142 had a brick arch supported on four 3-in. archtubes. Both had recently received heavA repairs. Locomotive Data Engine 7615 Cylinder diameter and stroke 23 in- by 30 in. Diameter of drivers 63 in. Tractive eSort lb. Weight on drivers lb. Total weight of engine lb. Total weight of engine and 351,450 ., ^ f Straight. Boiler type j radial stay Boiler diameter, first course 75 f4 in. Grate area Tubes, number and outside 414—2 in. Tube heating surface sq. ft. Normal firebox heating surface sq. ft. Heating surface added by
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
