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 326
Fig. 140. Ellipse -Section from aCylinder 170 MECHANICAL DRAWING 105 projected down on the cutting plane, at 1, 2, 3, etc. The lines drawnthrough these points perpendicular to 1/-7 are made equal in lengthto the corresponding distances 2-2, 3-3, etc., on the plan, because2-2 is the true width of… … Fig. 141. Parabola—Section from a Cone the parabola, the construction of which is exactly similar to that forthe ellipse, as given in Fig. 139. If the intersecting plane is parallelto more than one element, or is parallel to the axis of the cone, ahyperbola is produced. In Fig. 142, the vertical…
Mechanical drawing · Blueprinting
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