. American engineer . ting, and when hot shoving it forward until the weldcomes under the dies. This machine takes up a floor space ofless than two square feet, and strikes 2,000 or more blows perminute with 80 to 100 lbs. air pressure. After the safe-end is welded on, the flues are cut to the properlength in a machine having revolving disc cutters similar toan ordinary pipe cutter. They are then tested in the flue test-ing machine which was described on page 484 of the September,1912, number of the American Engineer, after which they areready for application to the boiler. For setting the cop
. American engineer . ting, and when hot shoving it forward until the weldcomes under the dies. This machine takes up a floor space ofless than two square feet, and strikes 2,000 or more blows perminute with 80 to 100 lbs. air pressure. After the safe-end is welded on, the flues are cut to the properlength in a machine having revolving disc cutters similar toan ordinary pipe cutter. They are then tested in the flue test-ing machine which was described on page 484 of the September,1912, number of the American Engineer, after which they areready for application to the boiler. For setting the copper ferrules in the firebox tube sheet, thetool shown in Fig. 9 may be used. The ferrules, which shouldneatly fit the holes, are first entered in the flue sheet and aredriven home with the tool and a hand hammer. The dimension issuch that the tool will center itself after being entered in theferrule. Dimension B is made 1/32 in. less than the diameter ofthe hole in the sheet. By driving the tool in until the wide face.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
