Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 84
Hyatt helical roller bearing. … Angles Replacedby Curves. Hyatt rollers supporting an axle. molded; stone as it leaves an ordinary hammer, all have flat sidesand square edges. Hence it has been easiest tobuild walls and floors which meet at rightangles, and to leave sharp corners on outerwalls, windows, doorways, and chimneys.…
Inventions · Inventors
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-433-248.webp)
