Mechanical Clock

During the early medieval period, many different time-keeping devices were used. Nearly all of these devices had been adopted from the period of classical antiquity with little to no innovation happening in time-keeping devices during the early medieval period.

Among the traditional time-keeping devices used at the time were water clocks, candle clocks, the use of astrolabes for determining time and sundials. It was during the High Middle Ages that new methods of time-keeping were discovered and new instruments discovered for the purpose.

It was around this time that the earliest mechanical clocks were created by the Christian monks who had extensive knowledge of astronomy.

Origins of Mechanical Clock

Christian monasteries around medieval Europe had a specific need for time keeping since monks had to strictly observe the hours of daily prayers. To this purpose, the monasteries used many different types of time-keeping devices.

Since monks also had access to classic literature on astronomy, mathematics and other subjects, they were in a unique position to be able to invent new time-keeping devices. This need for time-keeping led to the development of earliest mechanical clocks in the 10th century.

Invention of Mechanical Clock

There is historical disagreement as to when the oldest mechanical clock in medieval Europe was invented. Pope Sylvester II built a clock for a German town in 996 and it is considered one of the oldest clocks.

By the 11th century, clocks were being used in different parts of Europe. However, the use of proper mechanical clocks which utilised heavy weights for time-keeping, is more accurately dated back to the 14th century.

One of these clocks was built by a monk at Glastonbury in the 14th century and exists to this day. From the 14th century to the 15th century, mechanical clocks evolved so that they began to use a spring-powered operation rather than relying on heavy weights. However, these clocks had to be wound up twice a day by the monks for them to functional accurately.

Evolution of Mechanical Clock

When the earliest mechanical clocks were invented in the 14th century, they only carried the hour dial. This was because the pre-eminent need of the time was simply to keep hours accurately and even that was considered a major technological leap.

By the 15th century, however, mechanical clocks with even more detailed dials were being constructed. By the final quarter of the 15th century, multiple sources suggest that mechanical clocks with minute and second hands were in use in many parts of Europe.

Before soon, innovations in the construction and sophistication of mechanical clocks also led to the development of the pendulum clock which was more accurate, less expensive to create and more readily available to the people.

Use of Mechanical Clock

At the time of the invention of mechanical clocks, they primary use was in the monasteries. They were typically used to keep track of hours for daily prayers, to helps monks calculate solar and lunar eclipses, and to determine feast days with accuracy.

By the middle of the 15th century, mechanical clocks also began to be used at secular establishments and buildings such as castles, court houses and council chambers.

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