. A textbook on mechanical and electrical engineering . Fig. 48 objects that are familiar to all sheet-metal workers; namely,pipe angles {a), elbows {b), Ys {c), and Ts {d). The sameis also true of similar moldings mitered in a plane inwhich the true length of all members of such moldings maybe shown. The line of intersection may always be found insuch cases by bisecting the angle made by the pipe or mold-ings. Fig. 48 also illustrates an example of line shadingoften used by draftsmen to designate cylindrical surfaces on M. E. 94 PRACTICAL PROJECTION §15 working drawings. When cylinders
. A textbook on mechanical and electrical engineering . Fig. 48 objects that are familiar to all sheet-metal workers; namely,pipe angles {a), elbows {b), Ys {c), and Ts {d). The sameis also true of similar moldings mitered in a plane inwhich the true length of all members of such moldings maybe shown. The line of intersection may always be found insuch cases by bisecting the angle made by the pipe or mold-ings. Fig. 48 also illustrates an example of line shadingoften used by draftsmen to designate cylindrical surfaces on M. E. 94 PRACTICAL PROJECTION §15 working drawings. When cylinders of different diametersintersect (or cylinders of the same diameter whose axes donot intersect), the lines of intersection in any view arecurved lines, and are found in a manner similar to the pro-jection in the last problem. The lines, however, that aredrawn on any one cylinder must be projected to the inter-secting cylinder, for it is at the intersection of lines thusdrawn that points are established through which the curve ofintersection may be tra
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmechani, bookyear1902
