PL315843A1 - Upright piano keyboard mechanism - Google Patents
Upright piano keyboard mechanismInfo
- 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
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.
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)
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)
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 |
-
1994
- 1994-02-26 DE DE4406296A patent/DE4406296A1/en not_active Withdrawn
-
1995
- 1995-02-23 EP EP95911256A patent/EP0746842B1/en not_active Expired - Lifetime
- 1995-02-23 PL PL95315843A patent/PL315843A1/en unknown
- 1995-02-23 CZ CZ962462A patent/CZ246296A3/en unknown
- 1995-02-23 JP JP7522128A patent/JPH10500779A/en active Pending
- 1995-02-23 AT AT95911256T patent/ATE161114T1/en not_active IP Right Cessation
- 1995-02-23 DE DE59501103T patent/DE59501103D1/en not_active Expired - Lifetime
- 1995-02-23 KR KR1019960704183A patent/KR970700900A/en not_active Application Discontinuation
- 1995-02-23 WO PCT/EP1995/000657 patent/WO1995023403A1/en not_active Application Discontinuation
- 1995-02-23 CN CN95191799A patent/CN1142273A/en active Pending
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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