(6) Multiple trammel gear (1)
When the red disk connected to the right handle rotates, two blocks move respectively along the inside of the intersecting ditches. One rotation of the disk translates to two rotations of the left axis. The diameter drawn by the centers of the round bars connected to the blocks is half the diameter of the red disk. [Animation: Kiyokazu AKIYAMA, Graduate school of informatics, Oct 1999, and DI JING, Graduate school of informatics, Jan. 2001]
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