. American engineer and railroad journal . arting the flue lip flaring out. the first step in the turningof the bead. Rolling.—The front end of the Hues having been shimmed withstrips of sheet iron, both the back and front ends are rolled withI lie Dudgeon roller. With proper appliances the front end may besafely and economically rolled by air. The rolling of the back endsis another matter; these should lie rolled by hand, as there is toomuch at slake In risk the danger of damaging the flues by improperrolling. There is not the safety and uniformity of work in airrolling that obtains in band r

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. American engineer and railroad journal . arting the flue lip flaring out. the first step in the turningof the bead. Rolling.—The front end of the Hues having been shimmed withstrips of sheet iron, both the back and front ends are rolled withI lie Dudgeon roller. With proper appliances the front end may besafely and economically rolled by air. The rolling of the back endsis another matter; these should lie rolled by hand, as there is toomuch at slake In risk the danger of damaging the flues by improperrolling. There is not the safety and uniformity of work in airrolling that obtains in band rolling by a competent workman. Expanding I Fig. 7.)—Particular stress should be placed uponthis, the most important step in the flue setting process. It is amistake to regard the bead as the part requiring the most portion of the flue next to the sheet on the water side is asimportant as the bead. Care should be taken that the flue shoulder r] 2 I i y ri 2I L e-44^ Fig. I The FlueSheet Hole rf i a Fit/. 2 The FlueFerrule. Fig. 4- FiO. 3 Snaged Endy of Flue Ferrule Expandedinto Flue Sheet withProsser Expanded Fig. 5 Flue Driveninto Sheet Fig. 6 Flue Mandrelledout Lightly Fig. 7 Flue Expanded

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering