Grand piano action

Details Grand piano action Grand piano action

2005-12-06

2005-12-06

Lockett, Kimberly (Department: 2837)

Music

Instruments

Stringed

Reexamination Certificate

active

06972359

ABSTRACT:
A piano action (10) includes a wippen (14) having a wippen body (24). The wippen body (24) is pivotally mountable on a first rail (20) of a piano. A repetition lever (38) is pivotally mounted on the wippen body (24). A jack (46) is also pivotally mounted on the wippen body (24). A repetition lever spring (48) is interposed between the repetition lever (38) and the wippen body (24) and is pivotally mounted to the repetition lever (38). The repetition lever spring (48) has a first limb (54) which acts on the jack (46) for restoring the jack (46) to its rest position and a second limb (52) which acts on the repetition lever (38) for restoring the repetition lever (38) to its rest position. The second limb (52) is shorter than the first limb (54) such that a free end of the second limb (52) is out of engagement with the repetition lever (38) and is shaped and dimensioned to move together with the repetition lever (38). The first limb (54), when the wippen (14) is in its rest position, in use is substantially rectilinear along its length.

REFERENCES:
patent: 1900488 (1933-03-01), Dasenbrook
patent: 1992939 (1935-03-01), Dasenbrook
patent: 2172253 (1939-09-01), Morse et al.
patent: 3516325 (1970-06-01), Harada et al.
patent: 2024489 (1980-01-01), None

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