The slot of link 1 slides along fixed pin A secured to the upright. Link 1 is connected by turning pair B to slider 2 which reciprocates in fixed straight guides a-a of the upright. Variable distance A͞͞B equals A͞͞B=k*sec(α). Displacement y of point B of slider 2 from its extreme lower position B' equals y=k*tan(α), where α is the angle between axis A͞͞B of slotted link 1 and axis Ax.
$1280$LG,MO$