While the article states that its name derives from an early use in mechanical watches, the modern mechanical watch is far more likely to use a deadbeat escapement for its intermittent motion. [1]
Bless the 50's... from a time where education videos actually tried to educate.
[1] http://www.samsung.com/uk/support/usefulsoftware/KIES/JSP
Well... that'll teach me I'm not on reddit; attention must be paid!