Triangulation applied to sheet metal pattern cutting : a comprehensive treatise for cutters, draftsmen, foremen and students ... (1920)
Kidder, F. S. (Fred SMith), b. 1863 · New York : The Sheet Metal Publication Company · leaf 66
57 OBLONG TO ROUND creased as shown at B, its capacity at a b will be corre- spondingly increased. Conditions will not at all times permit of this increase in length, therefore we must re- sort to a form of fitting as shown at C. Here, as will be noted, that portion which forms the transition is… … Fig. 39. Forms of Fittings. nected to pipes which have been cut obliquely, and in many instances the ends of the center portion will not be parallel. To develop patterns of this class demands a somewhat greater understanding of the science, and is explained in subsequent Chapters.
Sheet-metal work
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