| 摘要 |
The sheet music turning system has a stack of a plurality of rectangular transparent envelopes with their closed end attached to an elongated rod. An opened slot is formed at their opened edge or at two side edges close to the opened edge. The slots are formed in offset locations in alternate envelopes. The music sheets are mounted in the envelopes sequentially. The elongated rod is pivotally mounted in a horizontal position to a lower end of a forward leaning upper frame which has a sliding arm provided at its upper end or at the two sides. The sliding arm has a finger extending over the top edge portion or two fingers extending over the two side edge portions of the stack and being slidable between the offset locations of the opened slots to cause the first envelope to flip forward by gravitational force one page at a time to display the music sheets sequentially one page at a time.
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