An yellow oval gear engages with a pink gear rotating around fixed axis.
A popcorn slider fixed to the yellow oval gear slides in groove of a green slider. The latter moves along runway of the grey base.
A pin on the pink gear face slides in an oval groove of the popcorn slider.
A pin on the right of the popcorn slider slides in the slot of orange slider. The latter moves along other runway of the grey base.
The green slider reciprocates linearly with dwells at both ends of its stroke.
The orange slider reciprocates linearly. Its speed is constant when the pink gear engages with the straight portions of the yellow oval gear.