(19)
(11) EP 0 259 060 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.07.1989 Bulletin 1989/28

(43) Date of publication A2:
09.03.1988 Bulletin 1988/10

(21) Application number: 87307330.8

(22) Date of filing: 19.08.1987
(51) International Patent Classification (IPC)4: G10C 3/16
(84) Designated Contracting States:
AT DE FR GB IT

(30) Priority: 04.09.1986 CA 517503

(71) Applicant: Wall, Paul Gerhard
Kitchener Ontario, N2A 1R9 (CA)

(72) Inventor:
  • Wall, Paul Gerhard
    Kitchener Ontario, N2A 1R9 (CA)

(74) Representative: Ellis, John Clifford H. (GB) et al
5 Highfield Parkway
GB-Bramhall Stockport SK7 1HY
GB-Bramhall Stockport SK7 1HY (GB)


(56) References cited: : 
   
       


    (54) Action for upright piano


    (57) An action for an upright piano which emulates or simulates the action of a grand piano is provided. In the action, a back check lever (3) is positioned above the back of the key, and a grand piano whippen is positioned above the back check lever (3). The grand whippen acts on a knuckle (20) provided on a catcher arm (23) integrally connected with the hammer shank (24) at a substantial angle. Depression of the key produces upward movement of the back (1) of the key, the back check lever (3), and the grand whippen, in turn producing rotation of the catcher arm (23) which drives the hammer (27) towards the string (30). The catcher arm (23) has a catcher (45) at its forward end and the back check lever (3) has a back check (46) for catching the catcher after the hammer has rebounded from the string. A damping action is mounted independently from the hammer action.







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