John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 125
pstan head of which is seen in the figure. The upper portion mav be considered as a small copy of a cylinder popit head, the rubber proper, a small steel cylinder, being advanced and withdrawn by turning the screw head at the rear, and fixed and Held fast during the traverses along the work by the… … In plain turning under the guidance of the curvilinear the form may be produced directly from the material prepared as a surface or a cylinder, but with economy of time when that has been first turned by hand to remove the bulk of it to a rough approximation to shape, to diminish the work to be…
Ornamental turning
Internet Archive · Dr. David M. MacMillan · Public Domain Mark 1.0. Free to use for anything.
