The leneths of the links comply with the conditions: AC = = 1 .83A6 and / = 3 .57AB. Crank 1, rotating about fixed axis A, is connected by turning pair B to link 3 which moves in slider 4. Slider 4 turns about fixed axis C. Link 3 is connected by a sliding pair to slider 5 which, in turn, is connected by turning pair D to link 2 sliding in fixed guides a-a. When crank 1 oscillates at uniform velocity through angles ϕ on both sides of vertical line A͞C link 2 reciprocates with approximately uniform velocity.
$1008$LG,6L$