Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . Figure 25Dome cap laid off in gages. The Derry Collar* Co. off by gages as shown at A and B. Where domes canbe kept to a standard size, as they frequently are, a gage. Figure 27 he De^ry Collard Co. Dome flanging. saves a great deal of time in laving off the work. Thegage is held in place and the holes punched where they 72 Flanging and forging. belong. A dome flange like that shown in Fig. 23 willhave an elliptical opening in the sheet before flanging,as in Fig. 26. Here D will represent th
Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . Figure 25Dome cap laid off in gages. The Derry Collar* Co. off by gages as shown at A and B. Where domes canbe kept to a standard size, as they frequently are, a gage. Figure 27 he De^ry Collard Co. Dome flanging. saves a great deal of time in laving off the work. Thegage is held in place and the holes punched where they 72 Flanging and forging. belong. A dome flange like that shown in Fig. 23 willhave an elliptical opening in the sheet before flanging,as in Fig. 26. Here D will represent the neutral diam-eter of the sheet and Lx and L2 will be the neutral lineof the sheet along the flange on the center line of theboiler and on the side center respectively. A comparisonof such a dome with the one that is sloped down to theradius of the boiler will be seen by referring to Fig. L± and L2 are equal and H is a circular hole. Itis believed that the number of sheets taken up in detailAvill enable anyone with a fair knowledge of the subjectto lay out any work that will be met in boilers of anytype. Flanging and Forging.
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Keywords: ., bookcentury1900, bookdecade1910, bookidlocomotivebo, bookyear1912
