Link 1, rotating about fixed axis A, is connected by sliding pair D to link 2 which, in turn, is connected by a four-motion pair to link 3. The four-motion pair consists of spherical surface a of link 2 which contacts hollow cylindrical surface b of link 3. Link 3 rotates about fixed axis B. The mechanism transmits rotation between any two arbitrarily located axes A and B.
$981$LG,4L$