Input: green crank carrying orange slider
Output: pink disk rotating with dwells.
The slider has pins that slide in grooves of the pink disk and of fixed yellow guide plate. The latter and the orange slider help to reduce acceleration of the pink disk.
Link for downloading STEP files of this video:
http://www.mediafire.com/download/wtno4j1fxcg2364/Geneva16bSTEP.zip
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