How people woke up before alarm clocks
Tuesday, 2026/03/10176 words3 minutes820 reads
During Britain's industrial revolution, factories required strict timekeeping and precise start times for workers. A worker arriving just five minutes late could delay an entire assembly line and cost employers money. Workers needed reliable ways to wake up on time, especially during dark winter mornings. However, early alarm clocks were far too expensive for ordinary workers to afford.
Factories initially tried using whistles and bells to wake and summon workers, but these methods often proved unreliable. Instead, a unique profession emerged: knocker uppers. These human alarm clocks walked through streets and neighborhoods, knocking or tapping on windows, or shooting peas at them. They would stand outside until they received a response from their clients before moving on.
Throughout history, people invented many creative waking methods. Some kept roosters whose crowing signaled dawn. Others used candle clocks that dropped metal needles into trays every hour, creating noise. Church bells, rung hourly by bellringers using hourglasses, also helped organize people's days. Understanding how past societies managed sleep and waking could help us improve our own sleep habits today.
