And after knocking-up all his clients, the walking alarm clock probably went to bed since he probably had to stay up all night to do his morning job. He probably used the local timepiece in the local church or Council Hall as his reference.
I also have seen references to a sort of light elliptical “bird cage” construction of lightweight wires that could be rattled against either windows or shutters for the same result. Modern alarm clocks have finally let this guy sleep in, and maybe have a day job rather than staying up all night to do his morning duties. He loses one job but gets a life like everyone else…perhaps as the timekeeper at one of the local factories.