. Railway mechanical engineer . gn being the same in both caseswith the exception of the diameter of the driving wheelsand some other minor differences. The engines are of basic American design modified infittings and fixtures to suit French practice. They weredesigned by the builder, and each drawing was approvedby a representative of the railway. The dimensions are in sign in general follows American practice, a good grate areabeing obtained by the use of a short, wide firebox. Thefirebox is fitted with a brick arch and the boiler includesa 26-element superheater. Handholes are used instead
. Railway mechanical engineer . gn being the same in both caseswith the exception of the diameter of the driving wheelsand some other minor differences. The engines are of basic American design modified infittings and fixtures to suit French practice. They weredesigned by the builder, and each drawing was approvedby a representative of the railway. The dimensions are in sign in general follows American practice, a good grate areabeing obtained by the use of a short, wide firebox. Thefirebox is fitted with a brick arch and the boiler includesa 26-element superheater. Handholes are used instead ofwashout plugs to give greater accessibility for washing dump grate in the front of firebox is operated from thecab by a screw, and the outside end of the blowoff cock hasa special thread for connection to the fire hydrants of thecity of Paris. In order to quickly free the stack of smoke,the blower is fitted with a quick-opening valve operated fromeither side of the cab. Lagging on the boiler is omitted; the i—--—--1. Longitudinal Section of the Boiler for the French Locomotives the metric .system, the International system of screw threads,and the French-Westinghouse system of pipe threads. The locomotives all have cylinders 23 in. by 26 in., andcarry lb. boiler pressure. Owing to the slight dif-ference in the diameter of the drivers there is a differenceof 1,000 lb. in the tractive effort of the two orders, thelocomotives for the French State Railway developing a trac-tive effort of 35,200 lb., while those for the Midi develop36,200 lb. While the boiler capacity is low in relation tothe cylinder capacity, it compares verj favorably with re-cently built locomotives of the same type for use on Americanrailroads. The dimensions of both boilers are identical. The de- jacket is supported on a crinoline frame leaving an air spacewhich acts as a non-conductor. The firebox is fitted with an inside opening firedoor tomeet the requirements of a French law. The door is h
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
