John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 506
ersed along the sliderest with the work placed gradually nearer to the center and equally above and below it as before", until it formed the solid dovetail centrally to the corner. The remaining squares having been similarly treated, every one was returned to the rectilinear chuck, that the still… … vertical adjustment of the slide of the chuck, readilv ensured exact uniformity in the size and position of the dovetails cut upon every piece. The internal dovetails upon the large ground door square as with those in fig. 497, were commenced by reducing that piece to an irregular octagon, as…
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-graphophonepaten02unit-166-66.webp)
