Driving gear 1 rotates about fixed axis E and is connected through sleeve 8 to flanges 6 and 7 which carry pins 10. Links 5 turn on pins 10 and are pivoted by pins b to l inks 4 which, in turn, are pivoted to drive member 3 of driven shaft 9. Rollers a rotate freely on pins b and roll and slide alonlg groove d of fixed cam 2. Portions of groove d are a long circular arcs described from centres A, the axes of the pins connecting links 4 to drive member 3. Thus, when gear 1 rotates continuously, driven shaft 9 rotates intermittently with dwells.
$3191$CmL,D$