大轉輪中間有一個小齒輪，它的中心點固定而且和大轉輪的中心點呈90度。手把輸入旋轉運動於大轉輪，而小齒輪利用相對速度轉動旁邊的滾輪。 There is a pinion in the middle of the large wheel. The pinion's center is fixed, and its center is perpendicular to the large wheel ' s center. The handle input rotation to the large wheel, and the pinion rotates the next roller by the relative velocity.
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There is a pinion in the middle of the large wheel. The pinion's center is fixed, and its center is perpendicular to the large wheel ' s center. The handle input rotation to the large wheel, and the pinion rotates the next roller by the relative velocity.