Blueprint reading; a practical manual of instruction in blueprint reading through the analysis of typical plates with reference to mechanical drawing conventions and methods, the laws of projection, etc (1919)
Fairfield, Howard Parker, 1858-, Kenison, Ervin, Waite, Edward B. (Edward Broughton), 1873-, American Technical Society · Chicago, American technical society · leaf 252
Fig. 142. Hyperbola—Section from a Cone 172 MECHANICAL DRAWING 107 there must be a pattern giving the shape of any irregular surface,and in sheet-metal work a pattern must be made such that, when asheet is cut, it can be so formed that it will be of the same shapeas the original object. This… … Fig. 143. Development of a Right Cylinder Rolled Out on a Plane which can be smoothly wrapped about by a sheet of paper, can bedeveloped. Figures made up of planes and single curved surfacesonly would be of this nature. Double curved surfaces and warpedsurfaces cannot be developed, and patterns of…
Mechanical drawing · Blueprinting
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