Knocker-upper job to wake people up. This was a real job during the Industrial Revolution. Obviously, alarm clocks certainly existed at that time, but I guess they were prohibitively expensive.
More:
https://en.wikipedia.org/wiki/Knocker-up
https://vimeo.com/showcase/3066233/video/108109027
Previously:
Clock mouse jiggler - GIF
Salisbury Cathedral clock - photo
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