May 8, 2009 links for 2009-05-08 by HFM, under Recently Read graphpaper.com – Who Watches the Watchman? An elegant solution, designed and patented in 1901 by the German engineer A.A. Newman, is called the “watchclock”. It’s an ingenious mechanical device, slung over the shoulder like a canteen and powered by a simple wind-up spring mechanism. (tags: gadget design history time security) Leave a Reply Cancel reply Save my name, email, and website in this browser for the next time I comment. Yes, add me to your mailing list Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.