. American engineer and railroad journal . e service for which these locomotives are to beused, and for that reason simple cylinders have been combustion chamber has proved to be a complete success andthe slight trouble which had been found with leaky seams hasbeen eliminated in this last design by welding the connections be-tween the combustion chamber ring, the crown sheet and thethroat sheet. The experience with the superheater has evidentlynot been conclusive, as accompanying this order of Pacific typelocomotives there are three of the Atlantic type, two of whichare equipped
. American engineer and railroad journal . e service for which these locomotives are to beused, and for that reason simple cylinders have been combustion chamber has proved to be a complete success andthe slight trouble which had been found with leaky seams hasbeen eliminated in this last design by welding the connections be-tween the combustion chamber ring, the crown sheet and thethroat sheet. The experience with the superheater has evidentlynot been conclusive, as accompanying this order of Pacific typelocomotives there are three of the Atlantic type, two of whichare equipped with the Schmidt superheater. The design of the4-6-2 engines is almost identical with the last order of simplelocomotives of this type mentioned above, the principal differencebeing the use of the Walschaert valve gear in place of the Ste-phenson. In view of the fact that this design can be considered as havingbeen most thoroughly and carefully tried out in service coveringseveral years, the details of the boiler and frames of the Pacific. SECTION THROUGH THE COMBUSTION CHAMBER AND FIREBOX. type are illustrated herewith. The 46 sq. ft. of heating surfacein the combustion chamber, included with the firebox heatingsurface, gives a ratio with the total heating surface of nearly8 per cent., which, of course, is a great advantage in itself in addi-tion to the advantage of getting the tube ends removed from the 106 AMERICAN ENGINEER AND RAILROAD JOURNAL.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
