| 摘要 |
In a calendar watch, the watch stem has three positions available for independently setting the time, setting the date and winding the watch. Independence of these functions is achieved by the use of gears mounted slidably on a spline which is part of the stem, and by a gear displaceable transversely of its axis, which makes it possible to move the spline into contact with the gears without causing damage even when the teeth of the spline and the corresponding teeth in the gears are not in register.
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