Modern carpentry and joinery : being a compilation of the very best things and most modern and practical methods known in the arts of carpentry and joinery (1910)
Hodgson, Frederick Thomas, 1836- · Chicago : F. J. Drake & Co. · leaf 65
Fig. 34. the sides of the cone in e and c; draw c e parallelto the base, and draw a a, cutting it in a, the pointrequired. 62 MODERN CARPENTRY XXVII. On a given cylinder to describe a helix. Let abed, &c. (Fig. 35), be the horizontal projec-tion of the given cylinder. Take on this curve a… … of the points a, b, c, &c. draw a vertical line, and pro-duce it along the vertical projection of the cylinder.Then conceive a curve cutting all these verticals in thepoints abed, in such a manner that the height of thepoint above the ground-line may be in constant rela-tion to the arcs a b, b…
Carpentry
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
