History dating platform clock escapement
None of the first clocks survived from 13th century Europe , but various mentions in church records reveal some of the early history of the clock.
The first major advance in clock construction occurred in Europe during the 14th century.
Between 12, there is an increase in the number of references to clocks and horologes in church records, and this probably indicates that a new type of clock mechanism had been devised.
Existing clock mechanisms that used water power were being adapted to take their driving power from falling weights.
These early clocks may not have used hands or dials, but “told” the time with audible signals.
The word clock (from the Latin word clocca, "bell"), which gradually supersedes "horologe", suggests that it was the sound of bells which also characterized the prototype mechanical clocks that appeared during the 13th century in Europe.
The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon and in Egypt around the 16th century BC.
Other regions of the world, including India and China, also have early evidence of water clocks, but the earliest dates are less certain.
In an hourglass, fine sand pours through a tiny hole at a constant rate and indicates a predetermined passage of an arbitrary period of time.Water clocks, also known as clepsydrae (sg: clepsydra), along with the sundials, are possibly the oldest time-measuring instruments, with the only exceptions being the vertical gnomon and the day-counting tally stick.Given their great antiquity, where and when they first existed are not known and perhaps unknowable.Outside of Europe, the escapement mechanism had been known and used in medieval China, as the Song Dynasty horologist and engineer Su Song (1020 - 1101) incorporated it into his astronomical clock-tower of Kaifeng in 1088.However, his astronomical clock and rotating armillary sphere still relied on the use of flowing water (ie.