John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 565
four of these grooves to the one side were cut first, their similar lengths determined by the two segment pins, and then the four opposite to them with the segment pins replaced to correspondingly arrest the partial rotation of the mandrel. The four short straight cuts parallel with c, b, which… … apertures in the spear heads left by the last cuts and then the two to form their necks; the work arrested intermediately to the first five positions, and then equidistantly above and below these fresh points by the slide of the eccentric chuck. Should the rectilinear chuck be employed instead of…
Ornamental turning
Internet Archive · Dr. David M. MacMillan · Public Domain Mark 1.0. Free to use for anything.
