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 224
TWO PRONGED FITTING 215 prong without first finding the true form at the junction of the prongs. It may be here remarked that as has been previously stated, a form could have been estabhshed for the junc- tion of the prongs, and. the pattern for each prong de- … Fig. 105. Plan, Elevation, and True Form of Section When It is Required That the Fitting Be "Flat on One Side." veloped in the same general manner as has been ex- plained for the left hand prong. This is by no means a difficult operation, since the true form in this closely resembles a semi-ellipse…
Sheet-metal work
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
