DOUBLE-REPETITION PIANO MECHANISM Russian patent published in 2012 - IPC C10C3/16 

FIELD: physics.

SUBSTANCE: double-repetition piano mechanism comprises interacting keyboard, pilot, a figure bearing the main rail, a damper spoon, a jack, a spring acting on the jack, a movable support with a cut for accommodating the free end of a bow spring and connected to the repetition lever which bears an adjustment screw with cushion in contact with the protrusion of the support, a butt having a platform connected to a counter-check in contact with a check connected to the figure, and the butt carried a hammer shank with a hammer, a spring for linking with the top main rail with a damper unit for interaction with strings. The repetition lever with a screw and a cushion are placed on a support which is mounted on the jack; the support has protrusions, with a screw and a spring, with possibility of adjustment of the repetition lever, and a screw with a spring which link the support with the jack, and adjustment supports are mounted on the main rail, and are provided with a movable board with screws. The mechanism is further provided with a bridle, an adjustment screw and a bridle wire; the bridle is attached to the butt and is connected to the adjustment screw lying on the counter-check, and the bridle wire is attached to the check.

EFFECT: improved design.

1 cl, 1 dwg