| 摘要 |
PROBLEM TO BE SOLVED: To provide a mechanism for preventing intrusion of dust or the like to a mechanical watch 1, particularly, a winding key insert port of a pocket watch to be wound by a winding key. SOLUTION: The present invention relates to a protective device for an aperture 6 allowing access to the winding mechanism of the watch, particular to a winding stem 7. For this purpose, a moving element 8 is implemented, mounted around the stem 7 and able to move between two end positions, first of all to at least partially block the aperture 6 in normal use and, secondly, to release access to the winding stem 7 in order to wind the watch. COPYRIGHT: (C)2006,JPO&NCIPI
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