Input: pink shaft rotating continuously.
Output: yellow slider linearly reciprocating with dwells.
The dwells are created due to orange teeth-uncompleted gears.
There are two working modes: the dwells take place at both ends (first part of this video) or at one end (second part) of the slider stroke.
Use blue shifter to switch between two modes (moving the teeth-uncompleted gear block).
It is an application of mechanism shown at:
https://youtu.be/8lNxCUpZH8k
This gear drive can be called as the gear box for
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