Five shuttle trammel of Archimedes

It is a kinematic art.
In put: white gear of internal teeth.
Five shuttles move in 10 radial straight grooves.
Unusual thing: there is not a bearing for geometric axis of green gear.
This was made based on video (minute 1:57):

Last scene of the video shows other way to transmit motion for the green ring.

Mechanism,Trammel of Archimedes,