Mechanism for Increasing Stroke Length

Input: blue slotted slider linearly reciprocating with constant stroke length.
Output: orange slider linearly reciprocating with adjustable stroke length.
Yellow slider has revolution joint with green slotted bar.
Adjust position of the yellow slider on the blue slider to get various stroke lengths of the output.
Lo = Li.(a/x)
Li: input stroke length
Lo: output stroke length
x: pivot center distance between pink and yellow sliders in vertical direction.
a: distance from pivot center of the pink slider to sliding line of the orange slider in vertical direction.

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