| 摘要 |
A page turning device. Ferrous flat plate members are detachably secured to the pages to be turned of a book. A magnet member is carried by an elongate arm member that is pivotally mounted to swing in a plane. In a first embodiment, a spring member under load urges the arm member to swing in its plane to an equilibrium position, carrying a magnetically-engaged flat plate member and hence a page member with it. A stop member maintains the arm member in its nonequilibrium position until the musician desires the page to turn; a latch member is activated to transiently displace the stop member from its stopping engagement with the arm member. The musician thereafter returns the arm member to its first position. In a second embodiment, a motor causes the arm member to swing in its plane, carrying one page with it each time it travels from its first to its second position. The motor includes a limit switch that is operative to return the arm member to its plate and hence page-engaging position after each page turning motion has been accomplished. In either embodiment, a peg member carried by the arm member may be employed to turn a single page in the absence of any magnetic engagement between the magnet and the ferrous plate members.
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