. American engineer and railroad journal . of Mr. J. H. McConnell, SuperintendentMotive Power of the Union Pacific Railway and the BrooksLocomotive Works, we illustrate and describe one of forty ten-wheel freight locomotives which have just gone into service onthat road. The total weight of the engine is 170,000 pounds, with 134,000 pounds on the driving wheels. Thecylinders are 20 by 28 inches; the driving wheels57 inches diameter, of cast steel; the driving journalsare 9 by 12 inches; the boiler is of the crown bar type, thediameter of the barrel being 68 inches, and that of the backhead 76%
. American engineer and railroad journal . of Mr. J. H. McConnell, SuperintendentMotive Power of the Union Pacific Railway and the BrooksLocomotive Works, we illustrate and describe one of forty ten-wheel freight locomotives which have just gone into service onthat road. The total weight of the engine is 170,000 pounds, with 134,000 pounds on the driving wheels. Thecylinders are 20 by 28 inches; the driving wheels57 inches diameter, of cast steel; the driving journalsare 9 by 12 inches; the boiler is of the crown bar type, thediameter of the barrel being 68 inches, and that of the backhead 76% inches. The heating surface is 2,574 square feet,which, by the way, is only 67 square feet more than that ofthe 8-wheel passenger locomotive for the Chicago & NorthWestern Railway (American Engineer, July, 1899, page 224).The firebox is 114 inches long by 41 inches wide, giving feet of grate locomotives have the diamond stack arranged on the septbmber, 1899. AMERICAN ENGINEER AND RAILROAD JOURNAL. 283 ^n^^^^^TV. J -50 rtawh Longitudina Section. pl,an shown in Fig. 16 of our May issue, page 161, this formbeing the standard practice of the Union Pacific. All of thedriving wheels have flanged tires, this practice having beenfollowed by Mr. McConnell for some time, with satisfactory re-sults. The crosshead is of the two-bar type. The spring rig-ging uses a 44-inch spring across the engine for the forwarddrivers, with a strong brace between the frames to supportthe fulcrum. The main and rear drivers are equalized bymeans of 48-inch springs placed below the frames, attached tocurved levers passing over the driving boxes by means oflinks 17 inches long, and the frame connections are madethrough short elliptic springs. The cross section shows thearrangement of the valve gear, which is somewhat like thatused by these builders for locomotives with piston valves, therocker arms being upon the opposite ends of the rocker shafts,which are hollow. The main crank
Size: 2445px × 1022px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
