Cranks 4 and 5, turning about fixed axis A, are connected by turning pairs B and C to sliders 6 and 7 which move in guides d-d and e-e of links 1 and 2 . Links 1 and 2 slide in fixed guides p and q. Link 1 is connected by turning pair E to slotted link 10. Link 2 is connected by turning pair F to slider 8 which moves along slot f-f- of link 10. Link 3 slides in fixed guide 1 and is connected by turning pair D to slider 9 which moves along slot f-f of link 10. The displacement s3 of link 3 equals s₃=m*sin(ϕ₁) ±n*sin(ϕ₂) where m=(b/(a+b))A͞B, n=(a/(a+b))A͞C, ϕ₁and ϕ₂ = angles of rotation of links 4 and 5. Thus the linear displacement of link 3 is obtained as the sum or difference of the linear displacements of links 1 and 2. Lengths A͞B and A͞C of cranks 4 and 5 are not equal.
$1258$LG,MO$