Link 1 is a circular eccentric rotating about fixed axis A. Link 2 has collar a encircling eccentric 1 and is connected by turning pair C to link 3. Ball bearing 4 is mounted between eccentric 1 and collar a. Slot b of link 3 moves along slider 7 which turns about fixed axis E. Link 3 is connected by turning pair D to link 5 whose housing d is a component of overrunning clutch 6. When eccentric 1 rotates, shaft B is driven intermittently by overrunning clutch 6. The amount the shaft is turned in each revolution of eccentric 1 depends upon the position of axis E of link 8 which can be adjusted along guide p by screw 9.
$1354$LG,D$