Automatic watch
Automatic watches are of two kinds. Mechanical and quartz. Mechanical automatic watches were first developed by Rolex which called them perpetual. They use a moving weight which moves due to the forces of gravity as you move your wrist. As the weight moves it winds the spring and keeps the spring fully winded up during the day while it is worn.
When you take the watch off the spring (at night) it winds down. In fact good watches (like Rolex, Omega, Cartier and so on) are designed to be mostly fully wound and there are winders for such watches which move the watch (watches) to keep them wound:
A watch winder is a device used to keep automatic (also known as self winding) watches running when not worn. While virtually all automatic watches can be manually wound, this is not always convenient. So the concept of an automatic watch winder was born.
A watch winder is a device which holds a watch (or often more than one) and moves it in a circular patterns to emulate the necessary parts of human motion to operate the self-winding mechanism.
A winder cannot over wind an automatic watch, since all automatic watches are protected from being over wound by a mechanism that disengages the winding process when the mainspring is fully wound. But using a timer-based winder is still very important to prevent excessive wear on the winding mechanism. There is no need to keep the watch in motion 24 hours a day when usually only 30 minutes of motion is necessary to keep it properly wound.
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Concord Saratoga Men's Automatic Watch 0310785 - NEW! US $949.00 End Date: Friday Dec-05-2008 5:53:25 PST Buy it now | Add to watch list |
June 30th, 2008 at 1:31 am
[...] wrote a post on automatic watches in another of my blogs preownes Rolex watches by mistake. It was supposed to be posted here but [...]