. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ere the plugs is a plug opiX)site each tube. Thesetubes are set side by side with just sufficientclearance to provide for expansion and con-traction and are covered, on the outside hva lagging to which reference will l>e madelater. .\11 of these plugs are not washoutplugs but are so-called construction plugs. Instead of being arranged togetherlike the side tubes, those forming the backhead are spaced about 1 in. ai>art. Thisfacilitates their connection to the drums at
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ere the plugs is a plug opiX)site each tube. Thesetubes are set side by side with just sufficientclearance to provide for expansion and con-traction and are covered, on the outside hva lagging to which reference will l>e madelater. .\11 of these plugs are not washoutplugs but are so-called construction plugs. Instead of being arranged togetherlike the side tubes, those forming the backhead are spaced about 1 in. ai>art. Thisfacilitates their connection to the drums atthe top, where they are staggered, thoughthey are kept in line where they enter the mud ring. ()nlocomotive No. 3500. from whose Ixjiler the illustrationshere given are taken, two tubes half way Iwtween the fire-door and the side arc bent, as shown, so as to admit the that is I>eut into the shape of an inverted U which isflanged and riveted to the mud ring as shown. This por-tion is stayed in the same manner as the ordinary open ends of this L are closed by sheets C bent and / T ) w. Fig. 2—Back End of McClellon Firebox riveted in place. The sides of the door opening are formedby sheets l)ent to a L shajK and riveted vertically to themain sheet B and with it fonning a circular opening at thetop into which the tul)e E is welded. February. 1926 RAILWAY AND LOCOMOTIVE ENGINEERING 33 The top of the opening is formed by the tube D that isflattened on four sides. Six rows of \x\ha enter this atthe top and are fastened in the same way as are their matesinto the mud ring. It is welded into the side of the verti-cal tubes E thus completing the door opening. The tubes E are carried above it and are capped asshown in the enlarged section. The cap is held in place
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
