. Railway mechanical engineer . rom the front the flue sheet is riveted to the firebo.\ section, the fire- bo.\ back end is raised and reapplied to the boiler at thethroat sheet connection and riveted and caulked. An alli-gator hydraulic riveter is used to apply rivets in the outsidesection, but it is possible to countersink the holes and drivethe rivets with an air hammer. One firebox had three newoutside top sections, a new flexible flue sheet and a newportion of staybolt section of flue sheet stay sheet applied atthe same shopping. To renew a complete inside section, start at the
. Railway mechanical engineer . rom the front the flue sheet is riveted to the firebo.\ section, the fire- bo.\ back end is raised and reapplied to the boiler at thethroat sheet connection and riveted and caulked. An alli-gator hydraulic riveter is used to apply rivets in the outsidesection, but it is possible to countersink the holes and drivethe rivets with an air hammer. One firebox had three newoutside top sections, a new flexible flue sheet and a newportion of staybolt section of flue sheet stay sheet applied atthe same shopping. To renew a complete inside section, start at the flue sheetend and remove staj- sheets and both outside and inside sec-tions, one at a time, until the defective section is one more outside section than the numlaer of insidesections, so that the riveting machine can be brought to thework to rivet the new inside section after it has been fit up the old inside sections and stay sheets, applyingthem in the same order as removed, so that the stay sheets. Fig. 4—A Method of Repairing Inside Sections and sections will be in the same relative position as apply rivets to all of the inside sections, using an alli-gator riveter. Then fit up and reapply all outside sectionsin their proper place and rivet and caulk. The completedback end can then be reapplied to the boiler and the throatsheet connection riveted and caulked. In laying out and punching any water circulation cut-outsin stay sheets, care must he exercised to have round corners,as square corners will crack out much sooner. The Jacobs-Shupert firebox will accommodate itself tolongitudinal strains due to the inequalities of the firebox andoutside casing sheet expansion, Ijut will not accommodate AucuET, 1919 RAILWAY MECHANICAL ENGINEER 487 itself to transverse strains from the same cause. Each sec-tion being of a semi-circular shape will take care of accumu-lated longitudinal expansion, but the transverse rigid staysheets will permit of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
