Stackfreed

A stackfreed is a simple spring-loaded cam mechanism used in some of the earliest antique spring-driven clocks and watches to even out the force of the mainspring, to improve timekeeping accuracy. Stackfreeds were used in some German clocks and watches from the 16th to the 17th century, before they were replaced in later timepieces by the fusee. The term may have come from a compound of the German words starke ("strong") and feder ("spring").

单词	Stackfreed
释义	Stackfreed 英语百科 Stackfreed A stackfreed is a simple spring-loaded cam mechanism used in some of the earliest antique spring-driven clocks and watches to even out the force of the mainspring, to improve timekeeping accuracy. Stackfreeds were used in some German clocks and watches from the 16th to the 17th century, before they were replaced in later timepieces by the fusee. The term may have come from a compound of the German words starke ("strong") and feder ("spring").
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