Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 83
like model. Itfeeds itself with 6,500sheets an hour, printingfrom a stereotype or anelectrotype curved upon itscylinder. The lathe, simpleenough a century ago, hasbeen developed into mach-ines of great complexity,power, and variety, all withthe original rotary mandrelas their essential… … Section—A B Ball thrust collar bearing. Ball Bearing Co., Philadelphia.
Inventions · Inventors
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-957-607.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-177-75.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-152-63.webp)