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 251
ttern for a fitting as illustrated at Fig. 113. In the following, our work will be confined to a discussion of methods which may be pursued to se- cure the patterns for the main stem and one branch, since the second branch is but a duplicate, although formed in the opposite direction. Fig. 118 is a… … Fig. 118. The Elevation or Section of a Two Pronged Fitting. resents the frustum of a right cone, and the diagram A G F H B \s an irregular form which constitutes the branch, the two forms being connected on line F H. With this in mind, we note that the length of line A G represents the diameter of…
Sheet-metal work
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
