. Railway mechanical engineer . nd flues im-mediately adjacent to the tube sheet, much trouble has beenexperienced with welding small tubes. The tube either de-velops longitudinal cracks after a few months service orthe bridges in the tube sheet crack. That scale formation causes troubles has not been]iroven conclusively, although scale deposit has a tendencyto prevent the water from properly cooling the sheet. Thetluorv is that using the prosser expander reworking un-welded flues loosens this scale so that it may be washed a locomotive will give reasonable mileage with smalltube
. Railway mechanical engineer . nd flues im-mediately adjacent to the tube sheet, much trouble has beenexperienced with welding small tubes. The tube either de-velops longitudinal cracks after a few months service orthe bridges in the tube sheet crack. That scale formation causes troubles has not been]iroven conclusively, although scale deposit has a tendencyto prevent the water from properly cooling the sheet. Thetluorv is that using the prosser expander reworking un-welded flues loosens this scale so that it may be washed a locomotive will give reasonable mileage with smalltubes unwelded, there is no particular jjoint in welding themas there is grave danger of bringing about attending troublesthat are much worse than occasional tube leakage. The artof electric welding is still in its infancy in spite of the factthat there have been wonderful developments made duringthe last few years. It certainly would be unfortunate if there-action was to result in the railroads neglecting the art. General North Eastern Mineral Hauling Locomotivi North Eastern Builds Mineral Locomotives These Engines Typify English Designs and with aTractive Effort of 37,000 lb. are Relatively Powerful BY ROBERT E. THAYEREuropean Editor of the Railway Mechanical Engineer THE Nortli Eastern railway has recently built and placedm some of the most powerful freight enginesused in Great Britain. These engines were built inthe companys shops at Darlington, to the designs of Sir\incent Raven, the chief mechanical engineer ofthat are classified as mineral locomotives of the typehaving an 0-8-0 wheel arrangement. These engines are tobe used in the coal traffic in the Newcastle district and aredesigned to haul a load of 1,400 metric tons (1,543 shortton?) on a per cent grade. They have three simplecylinders 18>1 in. by 26 in. They weigh 160,380 lb. inworking order, the total weight of the engine and tenderbeing 259,200 lb. They have 55^4 in. drivers, ca
Size: 2990px × 836px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
