Linkage for Drawing Hyperbola

This video was made based on the design numbered as 1006 in volume 2, Mechanisms in modern technic, I. Artobolevski.
Orange and violet sliders are connected together by a revolution joint.
When blue frame translates, center point of orange slider traces a hyperbola.
Its equation: y = (a.x) / (d–x)
a is distance between A and B.
d is distance between A and F in horizontal direction (width of the frame).

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