This Wired article also mentions the Canadian Roberts variation. When I was living in Canada, I remember being annoyed at having to buy special screwdrivers for furniture that I bought there. I actually came across a set of Roberts power tool heads that someone had thrown into a gutter. True story.
The Phillips screw and screwdriver were patented this day in 1936.
Courtesy U.S Patent and Trademark Office1936: Henry F. Phillips receives patents for a new kind of screw and the new screwdriver needed to make it work. It changes the worlds of mass production and machine repair, not to mention your home toolbox. (Randy Alfred, Wired)
Other, screw-related blog entries:
- Unscrewed: Finding Replacement Screws for Palm Tungsten T3
- What is Uni-Screw? – Jerz’s Literacy Weblog
- The standardization of screws
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