HAMMER STOPPERS FOR PIANOS HAVING ACOUSTIC AND SILENT MODES

摘要

A piano hammer stopper system includes a stopper rail set comprising at least first and second stopper rail members, each movable between respective first positions allowing unobstructed movement of associated piano hammers and respective second positions stopping at least one associated piano hammer from striking any corresponding string. At least one drive shaft is rotatably coupled to one or both of the stopper rail members. A drive arm is attached to the drive shaft and engages a drive fulcrum. A travel guide directs movement of the first and second stopper rail members between respective first and second positions. Rotation of the drive shaft rotates the drive arm to engage the drive fulcrum for moving one or both of the first and second stopper rail members between respective first and second positions.