John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 273
G FRAME, The toolslide A. which has a mainscrew of ten threads to the inch and is otherwise a copy of that of the eccentric cut- ting frame, revolves in a socket in the center of the flange, and its short spindle passes through the latter and terminates in a wheel of 36 teeth. This wheel revolves… … The value of thi center of movement of the radial flange train of wheels being— it follows that while the pulley and flange make one revolution around the fixed wheel, the eccentric frame A. rotates twice in the opposite direction, and the tool travelling in the path of the aggregate motion traces…
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-graphophonepaten12unit-108-0.webp)
