[Ads-l] fail safe, antedating 1944?

Peter Reitan pjreitan at HOTMAIL.COM
Mon Jan 25 11:50:01 UTC 2021

The fail-safe design principle existed as early as 1926, if not by precisely the same name, as described in conjunction with improvements in locomotive air-brake safety.

"This is in accordance with a basic principle which should govern the design of all safety apparatus, including signals, namely that in the event of any failure, such devices should go to 'warning,' 'danger' or 'stop,' or in other words, 'fail safely.'"

Wilkes-Barre Evening News, November 13, 1926, page 12.

The American Dialect Society - http://www.americandialect.org

More information about the Ads-l mailing list