. Railway mechanical engineer . pledaxle. The high-pressure crank pins were at 90 deg. witheach other and the central crank made 135 deg. with each ofthe high-pressure cranks. The boiler contained sq. heating surface, the increase being in the tube surface. The some were provided with two-wheeled pony trucks at theleading end. thus becoming 2-8-0 or Consolidation type en-gines, the first in Britain. The coupled wheels of each classwere the same diameter and had cast iron centers, a practiceunique in main line service, and this material is still usedfor 0-8-0 engines built at Crewe.
. Railway mechanical engineer . pledaxle. The high-pressure crank pins were at 90 deg. witheach other and the central crank made 135 deg. with each ofthe high-pressure cranks. The boiler contained sq. heating surface, the increase being in the tube surface. The some were provided with two-wheeled pony trucks at theleading end. thus becoming 2-8-0 or Consolidation type en-gines, the first in Britain. The coupled wheels of each classwere the same diameter and had cast iron centers, a practiceunique in main line service, and this material is still usedfor 0-8-0 engines built at Crewe. All the compound engineshave now been converted into simple engines: in the case ofthe four-cylinder engines the low-pressure cylinders havebeen retained as simple expansion cylinders and the workingsteam pressure reduced from 200 lb. to 165 lb. The engineillustrated is one of a new type designed by C. J. Bowen-Cooke, the chief mechanical engineer. It is equipped with aSchmidt superheater and when compared with similar engines. Great Central Six-Coupled Express Goods Engine coupled wheels were 4 ft. 5 in. diameter and the engineweighed 110,320 lb. in working trim. In these engines, con-siderable numbers of which were built, the steam pressurewas increased to 175 lb. Some years later after F. \Y. Webb had commenced to buildhis four-cylinder compound express engines, he applied hisfour-cylinder system to the eight-coupled goods engines andthe first engine turned out was built at Crewe in 1901. Thesewere similar to the three-cylinder engines, but the boilerswere larger, the total heating surface being increased to 1,753sq. ft., and the steam pressure was raised to 200 lb. The using saturated steam doing equal work, this type has showna saving of 25 per cent in coal consumption. The engineshave inside cylinders and piston valves worked by Joy-motion. The wheels are 4 ft. 5 r-j in. diameter with new -team brake is fitted which operates on the engine andtender. The tender is
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
