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 105
CHAPTER XIII. A Transitional Elbow from Round to Rectangular The fitting- illustrated at Fig 54, whose most common use is found in furnace work, supplies us with a com- paratively simple example in pattern development. A fitting of this class may be modified in many ways and … Fig, 54. Photographic View of a Transitional Elbow. not materially alter the method of securing its pattern. For convenience, we shall presume it to be made to given dimensions, which may be verified by the use of the scale in Fig. 55. We propose to secure the pattern for a fitting which will make…
Sheet-metal work
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
