First principles of mechanical and engineering drawing (1897)
Holt-Butterfill, H · London : Chapman & Hall · leaf 173
both axes parallel to the VP, will be as shown in No.5, but without the lines of penetration 1, 2, 3 ;• 4, 5, 6. To find theselines, first draw in the plan (No. 6) of the pyramids as if entire.Assume a vertical plane, tangent to the front edge x b of pyramid B, tocut through A to its base. It would… … MECHANICAL AND ENGINEERING DRAWING 161 shown in faint lines in No. 5—and it will be found to cut the frontedge x b of the prism B in points 2, 5; join these by straight lines topoints 1, 3 and 4, 6—previously found—and they will be the requiredlines of penetration of the two solids seen in…
Mechanical drawing
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