Link 1 turns about fixed axis 0 and is connected by turning pair B to slider 3 which moves along arm Aa of link 2. Link 2 has the form of bent lever aAd and turns about fixed axis A. Cross-piece b-b of slider 3 is connected by a sliding pair to X-shaped slider 4 which has guides with axes making the angle 90°-α with each other, where α is angle aAd. When link 1 turns about axis 0, point C, at the intersection of guides Ad and bb, describes circle q-q of radius D͞C. Centre D of the circle lies on straight line 0y which is perpendicular to axis 0x. Distance 0D is equal to 0͞D=0͞Ax(tan(α)). Radius D͞C of circle q-q is equal to D͞C=0͞B/cos(α). The mechanism can be modified by adding link 5 (shown by dash lines) which turns about fixed axis D and is connected by turning pair C to slider 4. In this case, the mechanism can transmit rotation from link 1 to link 5 with the transmission ratio i₁₅=ω₁/ω₅. Links 1 and 5 rotate in the same direction.
$1365$LG,GI$