Published on May 27, 2017
Input: regularly rotating pink crank to which pink disk is fixed.
Output: interruptedly rotating blue disk to which green disk is fixed.
1 revolution of the output corresponds 4 revolutions of the input.
Unusual thing: the output turns 50 deg., stops, turns 130 deg., stops and the process repeats although the blue disk is of symmetrical structure. V-groove angle: 40 deg.
The crank enters the V-grooves now at their right strokes, now at their left ones.
Pink and green disks are for keeping the output immobile during its dwells.
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