Ornamental turning : a work of practical instruction in the above art (1880)
Evans, J. H. (John Henry), lathe-maker · London : J.H. Evans · leaf 354
273 THE ROSE CUTTER. The inner pattern illustrates an additional movement, by which the pattern is twisted. To produce this, the following adjustments Fig. 189. … are necessary: For the first cut the radius ot the tool is again reduced by one turn, for the second the radius is further reduced by one half turn of the screw, and one and a half turns of the tangent-screw of the worm-wheel, d, these movements being Fig. 190. precisely the same for each…
Turning (Lathe work)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.