Cam 1 rotates about fixed axis A and has profiled ridge a and two rims b. Driven wheel 2 rotates about fixed axis B and has teeth c and tooth spaces d around its circumference. Axes A and B cross and are perpendicular to each other. When cam 1 rotates, ridge a turns wheel 2 through the angle φ=(2π/z), where z is the number of teeth of wheel 2. During the remainder of the revolution of cam 1, one of the teeth of wheel 2 is between rims b of the cam, thereby preventing unintentional rotation of the wheel. When cam 1 rotates continuously, wheel 2 rotates intermittently with one long dwell per revolution of cam 1.
$3096$SmC,ML$