| 摘要 |
A music box comprising two opposed metal combs with tuned steel teeth respectively disposed at two opposite sides relative to a pinned barrel, a driving mechanism to rotate said pinned barrel, and an adjusting device controlled to move either metal comb into the operative position, wherein rotating said adjusting device in one direction causes the tuned steel teeth of one metal comb to be struck by the pins on the outer wall of said pinned barrel in producing a certain tune or tunes; rotating said adjusting device in an opposite direction causes the tuned steel teeth of the other metal comb to be struck by the pins on the inner wall of said pinned barrel in producing a different tune or tunes.
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