How an automatic watch movement works

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How an automatic watch movement works

Post by koimaster » September 20th 2019, 4:36pm

When did the automatic mechanical movement originate?

First things first: the question of who invented the automatic movement is still disputed. Some say it was Abraham-Louis Perrelet (1777) while others credit Hubert Sarton (1778). Either way, automatic winding dates back several centuries. It was first incorporated into a watch by an eighteenth-century French inventor, Pierre Joseph de Rivaz, and perfected by John Harwood in the early twentieth century. Harwood, a watch repairer from Bolton near Manchester in England, developed the very first wristwatch with automatic winding.

Harwood's system used a weight that swung back and forth through 130° with the movement of the wearer's wrist. The photo (below) shows Harwood and an example of his movement. ... ent-works/


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