WO2002075717A2 - Upright piano mechanism allowing for adjustment of the response of a particular key and/or keys - Google Patents
Upright piano mechanism allowing for adjustment of the response of a particular key and/or keys Download PDFInfo
- Publication number
- WO2002075717A2 WO2002075717A2 PCT/SI2002/000009 SI0200009W WO02075717A2 WO 2002075717 A2 WO2002075717 A2 WO 2002075717A2 SI 0200009 W SI0200009 W SI 0200009W WO 02075717 A2 WO02075717 A2 WO 02075717A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- upright piano
- damper
- key
- keys
- attachment
- 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
- G10C3/161—Actions specially adapted for upright pianos
-
- 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
- G10C3/12—Keyboards; Keys
-
- 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
- G10C3/166—Actions for damping the strings
-
- 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
- G10C3/26—Pedals or pedal mechanisms; Manually operated sound modification means
Definitions
- the invention involves the upright piano mechanism allowing for adjustment of the response of a particular key and/or keys.
- the upright piano mechanism referred to in this invention provides for separation of the damper from the string with an adjustable force that can be adjusted from the exterior of the upright piano referred to in this invention and is felt by the pianist as hardness and/or weight of the key in the second phase of its depression, which influences the feeling of the pianist when playing the piano.
- the invention has been classified into class G 10C 3/12 of the International Patent Classification.
- the technical problem solved by the invention in question is to provide for simple adjustment of the hardness of particular keys and/or for adjustment of the response of particular keys in the second phase of the respective depression through adjustment of the standard piano mechanism that on depression of the key moves the hammer and the damper without requiring any intervention into the piano mechanism at its adjustment.
- the depression of a particular key triggers the mechanism that makes the hammer strike the tightened strings.
- the hammer starts moving along its path to the string. Once the hammer has made one half of its stroke, the spoon together with the damper lever starts removing the damper from the string.
- the pressure of the spoon to the damper lever is transferred back to the key, which is felt by the pianist as the hardness and/or the weight of the key in the second phase of its depression.
- This "hardness” and/or “weight” of the key influences the pianist's feeling at playing the piano.
- the pressure exerted by the spring wire on the upper part of the damper lever, that is flexibly clamped into the carrier pole, is transferred via the lower part of the damper lever and via the spoon to the key at the moment when the latter is depressed and the damper is separated from the string.
- the upright piano mechanism that allows for adjusting the response of a particular key and/or keys referred to in the invention, has the uniform damper lever replaced by a damper holding attachment, such as clamped in the carrier pole, and a special piece lying within the reach of the spoon and via the carrier part connected with the arm for removal of the damper holding attachment, whereby the carrying part is flexibly suspended and can move vertically.
- a damper holding attachment such as clamped in the carrier pole
- Figure 1 side view of the cross-section of a standard upright piano mechanism
- FIG 2 side view of the cross-section of a standard upright piano mechanism, such as to enable the adjusting of the response of a particular key and/or keys;
- Figure 3 part of the upright piano mechanism referred to in the invention showing the arm 13 at the lowest possible point;
- Figure 4 part of the upright piano mechanism referred to in the invention showing the arm 13 at the highest possible point.
- Figure 1 shows the cross-section of a standard upright piano mechanism.
- the damper 1 pressing against the string 6 due to the operation of the spring wire 3 is mounted on the upper end of the damper lever 2 that is approximately in the center flexibly clamped in the carrier pole 5, while the lower end of the damper lever 2 is lying within the reach of the spoon 4 that is mounted at the end of the lever part 7, moved by lever 8 of the key 9.
- the pressure generated by the spring wire 3 via the damper 1 to the string 6 is transferred to the key 9 via the lower part of the damper 1 lever 2 and via the spoon 4 while the key is depressed and the damper 1 is separated from the string 6.
- the latter is replaced by the attachment 2a with the damper 1 mounted on its upper end.
- the attachment 2a is flexibly clamped in the carrier pole 5. Due to the operation of the spring wire 3 the damper 1 presses against the string 6.
- Part 2b, lying within the reach of the spoon 4, is connected with arm 13 through the carrier part 11.
- Part 2b along with the carrier part 11 is flexibly mounted in the axle 12 that can be moved vertically up and down in the direction of the arrow A.
- the lower end of the attachment 2a continues into an oblong attachment 10 that lies within the reach of the lever section (not shown in Fig, 2) of the pedal mechanism. Via the attachment 10 it is possible to separate part 2a and in turn the damper 1 even by depression of the pedal.
- the force required to move the attachment 2b and to separate the damper 1 is the highest - the playing is the most difficult.
- the force required to move the attachment 2b and to separate the damper 1 is the lowest - the playing is the most easy.
- the force with which the damper 1 operates on the string 6 is identical in spite of the vertical position of the arm 13. It varies between 55 and 80 g, while the force on the key 9 depends on the vertical position of the arm 13 and varies between 15 and 100 g. Accordingly, in the version referred to in this invention, the force operating on the key 9 allows for a broad control range, whereby this force does not depend on the force with which the damper 1 presses against the string 6.
- the above described upright piano mechanism allows for easy and fast individual adjustment of the upright piano key response without any intervention into the upright piano mechanism.
- the invention does not influence the characteristics of correct playing the instrument, while the mere upright piano mechanism works in the same way as the standard mechanism, except that it allows for easy changing of the adjustable response of the keys.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200100076A SI20444A (en) | 2001-03-20 | 2001-03-20 | Upright piano action, providing response adjusment of each individual key or keys |
SIP-200100076 | 2001-03-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002075717A2 true WO2002075717A2 (en) | 2002-09-26 |
WO2002075717A3 WO2002075717A3 (en) | 2003-01-03 |
Family
ID=20432856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SI2002/000009 WO2002075717A2 (en) | 2001-03-20 | 2002-03-20 | Upright piano mechanism allowing for adjustment of the response of a particular key and/or keys |
Country Status (2)
Country | Link |
---|---|
SI (1) | SI20444A (en) |
WO (1) | WO2002075717A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1895503A1 (en) * | 2006-09-04 | 2008-03-05 | Yamaha Corporation | Key actuating system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2751804A (en) * | 1955-01-03 | 1956-06-26 | Joseph J Comparetti | Self-adjusting piano action damper mechanism |
WO2000054248A1 (en) * | 1999-03-08 | 2000-09-14 | Everardus Alexander Maria Snel | Piano provided with a key- and hammer mechanism comprising permanent magnets |
-
2001
- 2001-03-20 SI SI200100076A patent/SI20444A/en not_active IP Right Cessation
-
2002
- 2002-03-20 WO PCT/SI2002/000009 patent/WO2002075717A2/en not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2751804A (en) * | 1955-01-03 | 1956-06-26 | Joseph J Comparetti | Self-adjusting piano action damper mechanism |
WO2000054248A1 (en) * | 1999-03-08 | 2000-09-14 | Everardus Alexander Maria Snel | Piano provided with a key- and hammer mechanism comprising permanent magnets |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1895503A1 (en) * | 2006-09-04 | 2008-03-05 | Yamaha Corporation | Key actuating system |
US7667116B2 (en) | 2006-09-04 | 2010-02-23 | Yamaha Corporation | Key actuating system |
Also Published As
Publication number | Publication date |
---|---|
WO2002075717A3 (en) | 2003-01-03 |
SI20444A (en) | 2001-06-30 |
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