John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 527
RETURNED INTERNAL CURVES. 497 curve to the center of the hollow solid. I„ this particular - anCe, t] end dge rf ^ ^ ^ / J ^ of its spindle but the particular radius, as also the adjust- ments to be given to the two chucks are all immediatelyfound by tria upon the roughly prepared form of the work… … intermediately to the internal, as already described, with the work mounted on the spherical chuck alone. The segment stops employed first for accuracy, are often as essential for safety when the spherical is carried by any one of the o her ornamenting chucks. Thus when the one chuck is first…
Ornamental turning
Internet Archive · Dr. David M. MacMillan · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-331-222.webp)
