Round eccentric 3 rotates about fixed axis A. Follower 4 turns about fixed axis B and carries roller 6 which rolls along the contour of eccentric 3. Pawl 2 turns about axis C of link 4 and engages the teeth of ratchet wheel 1 which rotates about fixed axis D. To each revolution of eccentric 3, wheel 1 turns through the angle φ=2π/z, where z is the number of teeth on wheel 1, Roller 6 is held in contact with eccentric 3 by spring 5.
$3341$CR,ML$