1. The Knocker-Up: A Human Alarm Clock
Imagine paying someone to stand outside your bedroom and make sure you got out of bed. In Britain’s industrial towns, that was a practical service. A knocker-up helped workers reach factories and other jobs on time, when lateness could mean losing part of a wage.
Long poles allowed these workers to tap upstairs windows. Some used slender tubes to shoot peas at the glass. The aim was to wake the paying customer, and a knocker-up commonly waited for a response before moving on. A personal wake-up call offered something a distant bell could not: confirmation that somebody had heard it.
The occupation overlapped with the age of mechanical alarm clocks, so it should not be explained simply as a job from before alarms existed. Cost, reliability and established habits all mattered. Industrialization created enormous machines, but keeping those machines supplied with punctual workers could still depend on one person walking a route before dawn.
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