How to swing arm quick return mechanism work? The red link is drive. One of hinged is fixed, remain hinged connect with the slider reciprocates (Green color).
Blue link 1 that have one of hinged is fixed, Green color will slider on this link. It will move oscillate though an arc.
Blue link 2: one of hinged connect with blue link 1, remain hinged connect with rolling (brown block).
Rolling slider.
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