PL315843A1 - Upright piano keyboard mechanism - Google Patents

Upright piano keyboard mechanism

Info

Publication number
PL315843A1
PL315843A1 PL95315843A PL31584395A PL315843A1 PL 315843 A1 PL315843 A1 PL 315843A1 PL 95315843 A PL95315843 A PL 95315843A PL 31584395 A PL31584395 A PL 31584395A PL 315843 A1 PL315843 A1 PL 315843A1
Authority
PL
Poland
Prior art keywords
upper hammer
repulsion
axis
jack
lever
Prior art date
Application number
PL95315843A
Inventor
Henri Jan Velo
Original Assignee
Ed Seiler
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ed Seiler filed Critical Ed Seiler
Publication of PL315843A1 publication Critical patent/PL315843A1/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C3/00—Details or accessories
    • G10C3/16—Actions
    • G10C3/24—Repetition [tremolo] mechanisms

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The invention relates to a keyboard mechanism with an upper hammer (3) which is hinged so that it can pivot about a first axis and a jack (2) which can pivot about a second axis and which co-operates with the upper hammer (3). In a first embodiment, the second axis can be displaced in the direction of the upper hammer (3) by depressing the keyboard key (1) associated with the mechanism. There are repulsion means which, as the upper hammer (3) rebounds after striking the piano string (4), exert a force of repulsion between the upper hammer (3) and the jack (2). The repulsion means are formed by two permanent magnets (14, 16), one of which is arranged on the upper hammer (3) and the other on the jack (2). The magnets (14, 16) are oriented so that their like magnetic poles point toward each other. In a second embodiment, the second axis is arranged on a lever (20) which can be displaced in the direction of the upper hammer (3) by depressing the keyboard key (1) associated with the mechanism. There are repulsion means which, as the upper hammer (3) rebounds after striking the piano string (4), exert a force of repulsion between the upper hammer (3) and the lever (20). The repulsion means are formed by two permanent magnets (23, 24), one of which is arranged on the upper hammer (3) and the other on the lever (20). The magnets (23, 24) are oriented so that their like magnetic poles point toward each other.
PL95315843A 1994-02-26 1995-02-23 Upright piano keyboard mechanism PL315843A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4406296A DE4406296A1 (en) 1994-02-26 1994-02-26 Mechanics for a piano

Publications (1)

Publication Number Publication Date
PL315843A1 true PL315843A1 (en) 1996-12-09

Family

ID=6511277

Family Applications (1)

Application Number Title Priority Date Filing Date
PL95315843A PL315843A1 (en) 1994-02-26 1995-02-23 Upright piano keyboard mechanism

Country Status (9)

Country Link
EP (1) EP0746842B1 (en)
JP (1) JPH10500779A (en)
KR (1) KR970700900A (en)
CN (1) CN1142273A (en)
AT (1) ATE161114T1 (en)
CZ (1) CZ246296A3 (en)
DE (2) DE4406296A1 (en)
PL (1) PL315843A1 (en)
WO (1) WO1995023403A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998010409A2 (en) * 1996-09-02 1998-03-12 Erik Ingvor Petersen A striking mechanism for a string instrument
GB2331831A (en) * 1997-12-01 1999-06-02 Dietrich Heinrich Dotzek Upright piano action employing attractive magnetic means
DE19757178C1 (en) * 1997-12-22 1999-06-10 Kloeckner Moeller Gmbh Locking arrangement for two low voltage switching devices connected via a flexible element, esp. a Bowden cable and to be locked to prevent simultaneous switching
FR2846455A1 (en) * 2002-10-29 2004-04-30 Jean Marc Desmurs Device for facilitating adjustment of the action of an upright piano includes regulating screw and rod for adjusting the tension of a sprung steel device stretched from front part of felt
CZ297498B6 (en) * 2004-04-28 2007-01-03 Petrof, Spol. S R. O. Action mechanism of mechanical piano
JP3128574U (en) * 2006-10-30 2007-01-18 有限会社オフィスタスティ piano
JP4489140B1 (en) * 2009-07-29 2010-06-23 有限会社藤井ピアノサービス Action method of upright piano action and upright piano action
JP6745042B2 (en) * 2017-01-10 2020-08-26 カシオ計算機株式会社 Keyboard device and keyboard instrument

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE35765C (en) * O. PFEIFFER, in Firma J. A. PFEIFFER & CO. in CO., in Stuttgart, Silberburgstrafse 120 Release and catch device on pianino mechanisms
DE149882C (en) *
FR445588A (en) * 1912-06-29 1912-11-14 Jean Genet Device facilitating repetition in pianos
US1554977A (en) * 1923-03-13 1925-09-22 Borgarello Octavio Piovano Mechanism of upright pianos
GB717528A (en) * 1952-03-06 1954-10-27 Arthur Cyril Courtney Thorpe Improvements in and relating to pianoforte movements
GB8528451D0 (en) * 1985-11-19 1985-12-24 Herrburger Brooks Plc Upright piano action
US4896577A (en) * 1987-10-02 1990-01-30 Trivelas Chris A Action for upright piano
DE9004697U1 (en) * 1990-04-26 1990-06-28 Louis Renner GmbH & Co., 7000 Stuttgart Mechanics for keyboard instruments

Also Published As

Publication number Publication date
DE59501103D1 (en) 1998-01-22
WO1995023403A1 (en) 1995-08-31
EP0746842B1 (en) 1997-12-10
ATE161114T1 (en) 1997-12-15
KR970700900A (en) 1997-02-12
DE4406296A1 (en) 1995-08-31
CN1142273A (en) 1997-02-05
EP0746842A1 (en) 1996-12-11
CZ246296A3 (en) 1997-05-14
JPH10500779A (en) 1998-01-20

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