Link 1 rotates about fixed axis A and has finger k and slot e. Finger k meshes with pins a of pin wheel 2 which rotates about fixed axis B, and slot e engages pins d of wheel 2. The heads of pins a and d are located in parallel planes. When link 1 rotates continuously, finger k engages a pin a, turning pin wheel 2 until slot e engages a pin d. During the dwells, concentric locking surface n engages two adjacent pins d to prevent unintentional rotation of wheel 2. When driving link 1 rotates at uniform velocity, driven wheel 2 rotates intermittently with eight rotation and eight dwell periods during each revolution.
$2617$PG,D$