Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 147
Fig. 28. Fig. 29. Fig. 30. 113 22 MECHANICAL DIJ AWING. ellii)se, parabola and hyperbola without piojectioiis; it will nowbo shown that they may be obtained as actual intersections. In Fig. 31 the plane cuts the cone obliquely. To iiiidpoints on the curve in i)lan take a series of horizontal pLines … Fig. 31, X y z etc., between points c^ and Ji. One of these planes, as w^should be taken through the center of c d. The points c and Anuist be points on the curve, since the plane cuts the two contourelements at these points. The horizontal projections of the contourelements will be found in a…
Architecture · Building · Carpentry
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
