Knocker-up

 A Knocker-up was a profession in England and Ireland that started during and lasted well into the Industrial Revolution and at least as late as the 1920s, before alarm clocks were affordable or reliable.

A knocker-up's job was to rouse sleeping people so they could get to work on time.

The knocker-up often used a long and light stick (often bamboo) to reach windows on higher floors. In return, the knocker-up would be paid a few pence a week for this job. The knocker-up would not leave a client’s window until they were assured the client had been awoken.

There were large numbers of people carrying out the job, especially in larger industrial towns such as Manchester. Generally the job was carried out by elderly men and women but sometimes police constables supplemented their pay by performing the task during early morning patrols