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Verge and Foliot Clock Escapement

Type Object Region Europe Time c. 1300–1590

The verge and foliot escapement was the core timekeeping device of 16th-century European mechanical clocks, widely used in tower and table clocks by …

Timeline

  1. c. 1580–1585Nuremberg · Holy Roman EmpireEscapement wheel teeth alternately lock and release the verge, driving the foliot's back-and-forth swing to consume mainspring energy evenly; clockmakers fine-tuned the rate by adjusting the position of weights on the foliot, keeping daily error within acceptable limits.
  2. c. 1584–1590Kassel · HesseSwiss-born clockmaker Jost Bürgi made portable spring-driven table clocks in the mid-1580s, combining the verge and foliot escapement with a fusee, significantly improving the accuracy and portability of small clocks and representing a staged breakthrough in escapement technology.
  3. c. 1585–1590Europe · EuropeBy the late 1580s, tower clocks fitted with verge and foliot escapements had become the timekeeping standard of European town public life; striking bells coordinated market openings, craftsmen's work and religious rites; the mechanical clock expanded from an exclusive church device into urban infrastructure.

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