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The Riefler escapement is a mechanical escapement for precision pendulum clocks invented and patented [1] by German instrument maker Sigmund Riefler in 1889. [2] It was used in the astronomical regulator clocks made by his German firm Clemens Riefler from 1890 to 1965, [ 3 ] which were perhaps the most accurate all-mechanical pendulum clocks made.
Sigmund Riefler was born on 9 August 1847 to Magdalena and Clemens Riefler. He studied mathematics, geodesy and mechanical engineering at the Technical University of Munich, and then physics and astronomy at the University of Munich. From 1870 he worked as an engineer in the Royal Prussian Land Survey, surveying land in Schleswig. [3]
Riefler escapement; V. Verge escapement; Media in category "Escapements" This category contains only the following file. Figure 6.tif 1,220 × 908; 1.68 MB
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The primary and secondary pendulums were linked together in a feedback loop which kept the secondary synchronized with the primary. [1] [14] The secondary clock had a mechanical escapement using a 15 tooth count wheel which was moved forward each right-hand pendulum swing by a pawl attached to the pendulum.
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