John Harrisons 1759 longitude watch known as H4 contains an innovative mechanism to ensure the power supplied to the balance wheel is essentially of constant force. He used a spring driven remontoire.
This model, made in wood, demonstrates the remarkable action of this remontoire which in conjunction with other innovations helped to make the watch as accurate as it proved.
Further details can be found at www.woodenclockspot.blogspot.com
Негізгі бет A model of the remontoire action on John Harrisons longitude watch H4
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