- Jens Olsen
Jens Olsen (
27 July 1872 -17 November 1945 ) was aclockmaker ,locksmith andastromechanic who built the famous world clock located in the city hall ofCopenhagen , the Rådhus. He was born inRibe ,Denmark . Ever since he was a small child, Olsen was interested in clocks and other mechanical devices. After hearing of the broken clock inCarsten Hauch 's "A Polish Family ", he dreamed of fixing that clock. Later, he envisioned a clock that would show every conceivable type of time, fromsidereal time to the rotation of the planets.Olsen's father was a weaver but apprenticed Olsen to a locksmith. However, he remained interested in clocks and read as much as he could about them and later
astronomy . Even after ending his apprenticeship and becoming a locksmith Olsen continued to pursue these interests.In 1897, Olsen became a
journeyman and eventually ended up inStrasbourg where he saw the famous clock built byBaptiste Schwilgue in the cathedral. He would hide in a corner near the clock, so that he could see and examine it past the viewing hours.After Strasbourg, Olsen moved to
Switzerland where he switched to clockmaking entirely. After eighteen months inParis and a five months stay inLondon , he returned to Denmark to work as a superintendent at Cornelius Knudsen's establishment. At the same time he had his own business as a clockmaker. In 1905, he marriedAnna Sofie Kröldrup , and established his shop at her home.When he was about fifty, Olsen completed his calculations for the world clock he envisioned. He showed them to Professor
Elis Strömgren who approved them. However, it took another twenty years to acquire the funds necessary to build the clock.The clock was started
December 15 ,1955 at 3 o'clock in the afternoon. Unfortunately, Olsen had died ten years earlier in 1945 ofthrombosis . His clock continues to work, and is one of the most accurate mechanical devices in the world.
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