Piano Technicians Guild Foundation

Supporting PTG

The Jack Wyatt Museum

Blüthner Patent action grand

Blüthner Action
The Blüthner patent grand action, described and in motion
Blüthner patent grand action model
Real time
Blüthner patent grand action model, slow
Slow motion
Blüthner patent grand action
Blüthner patent grand action: action at rest
action at rest
Blüthner patent grand action
Approaching escapement
Blüthner patent grand action
The jack has gone through escapement