John Jacob Holtzapffel · digital reprint by www.CircuitousRoot.com · leaf 466
440 THE STEAIGHT LINE CHUCK. which pass through its hack into the face of the lathe head; the back has a large circular aperture, also not seen in the woodcut, for the passage through it of the nose of the mandrel, that the latter may carry the drum drawn separately fig. 471. The ends of three flat… … scribed page 939 Vol. II., are attached in one line upon the central and reduced periphery of the drum and have their other ends strained to either extremity of a fiat steel bar which latter, therefore, receives areciprocatory motion by the chains winding around the drum, as that is turned in…
Ornamental turning
Internet Archive · Dr. David M. MacMillan · Public Domain Mark 1.0. Free to use for anything.
