BURMESTER
For this linkage r1 : r2 : r3 : r4: rp = .370 : .667 : .725 : .188 : .790.
This linkage is a Grashof rocker-crank.
In this example:
r1 = .370 , r2 = .667 , r3 =.725 , r4 = .188 , rp = .793
theta1 = 0 , beta = 231.0752
To see an animations of this linkage select the link below: