| 摘要 |
A rotary book rack arrangement has a stand and a stable plate fixed to and extending upwardly from the stand. The stable plate has a circular groove on one side. A rotating plate is mounted for rotation to the stable plate. Multiple book racks are connected for rotation to the rotating plate. A lower pin is fixed to each book rack and extends into the circular groove for riding in said circular groove with rotation of said rotating plate. An upper pin mounts the racks to the plate and a line between the upper and lower pins for each book rack is always vertical. A motor rotates the rotating plate.
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