Expanding table 1 

Turn yellow center plate counter-clockwise to expand the table.
When the center plate is turned, two blue side plates move out or in thanks to slider-crank mechanisms of violet conrods and green double crank. The latter has vertical prismatic joint with the center plate via two cyan pins that are fixed to the center plate.
At the end of the expanding process the center plate is lowered thanks to gravity, pink face cams and red pins (fixed to the center plate), thus the center plate is in a plane with the side plates.
This mechanism may be used in
• Baobab round white gla...
• Butterfly Round Glass ...
STEP files of this video:
www.mediafire.c...
Inventor files of this video:
www.mediafire.c...