. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . e of the rear portionof the upper barrel, or steam collectoras some call it, is made of thick tubeplate in which the water tubes arefixed. At the lower end the tubes areexpanded into a rectangular steel cir-culating chamber, connected to theunder side of the main barrel by a larg^pipe. The pipe is not shown, but theopenings in chamber and barrel are vis-ible in Fig. 2. The circulating chamber hason the under side a series of holes corre-sponding to the water ubes. Theseholes are there for the
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . e of the rear portionof the upper barrel, or steam collectoras some call it, is made of thick tubeplate in which the water tubes arefixed. At the lower end the tubes areexpanded into a rectangular steel cir-culating chamber, connected to theunder side of the main barrel by a larg^pipe. The pipe is not shown, but theopenings in chamber and barrel are vis-ible in Fig. 2. The circulating chamber hason the under side a series of holes corre-sponding to the water ubes. Theseholes are there for the purpose of get-ting at and doing the work of expand-ing the tubes into the upper wall of thechamber. These lower holes are closedby plugs or doors which can be opened forrepairs or inspection of the tubes andwithout removing the boiler from itsframe. Fig. 2 shows one side group oftubes removed, which clearly illustratesthe method of construction. As will be seen in Fig. 3, what mayby courtesy be called the back sheet isa thin plate of steel, the firebox sideplates are similar and the front of the. FIG. 2. BROTAN FIRE-BOX WITH ONE SET OF TUBES REMOVED. box, outside of the actual tube sheet,is made in the same way. These lightsheets are protected by fireclay or otherresisting material. The upright tubes
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
