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The earliest mention of candle clocks comes from a Chinese poem, written in 520 A.D.The first alarm clocks was created at 4th century BC. This was when the Greek philosopher Plato used a water clock with an alarm sound like that of a water organ, to wake up him up at dawn.
In the year 725, the Buddhist inventor Yi Xing created an astronomical clock that measured time but also the distance of planets and stars.
First alarm clock towers -
In 1787, Levi Hutchins, an American, invented an alarm clock to wake him up at 4 a.m. Although was made for his use, this alarm clock is the first mechanical alarm clock.
In 1847, Antoine Redier, a Frenchman, was the first to patent an alarm clock that was adjustable.
In 1876, American Seth E. Thomas created his own version of mechanical wind-up alarm clock that could be set for any time.
By the 1920s however, as alarm clocks spread, the unique profession began to fade away.