John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 555
of the concave superficies, exaggerated in fig. 527, and if the wheel be turned in the other direction, fig. 528, the collected cuts then leave the curve with a more or less projecting center. The solids hitherto considered have their axes coincident with one or other diameter of the oval curves of… … to its position, in all of which cases the eccentric chuck is interposed to vary the position of that axis after the manner already described for unaxial circular curved outlines. To produce fig. 529, the dish upon its wood chuck was first turned to its external and internal configuration and the…
Ornamental turning
Internet Archive · Dr. David M. MacMillan · Public Domain Mark 1.0. Free to use for anything.
