GB1444833A - Upright piano action - Google Patents
Upright piano actionInfo
- Publication number
- GB1444833A GB1444833A GB2279774A GB2279774A GB1444833A GB 1444833 A GB1444833 A GB 1444833A GB 2279774 A GB2279774 A GB 2279774A GB 2279774 A GB2279774 A GB 2279774A GB 1444833 A GB1444833 A GB 1444833A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- butt
- incorporated
- upright piano
- weaker
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
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
- G10C3/166—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
- G10C3/16—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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Springs (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
1444833 Pianofortes NIPPON GAKKI SEIZO KK 22 May 1974 [13 July 1973] 22797/74 Heading G5J A standard upright piano action is modified by the inclusion of a main spring 36 which urges against butt 19 during the intermediate part of its displacement from rest (Fig. 1, not shown). A subsidiary weaker spring may be incorporated with the main spring making continual contact with the butt. In the embodiment shown an angled leaf spring 36 is braced against damper rail 32 by screws 37 which also coarsely adjust distance d. Fine adjustment of d is made by inserting a tool into hole 52 and bending the spring. Spring 36 may be replaced by a coil spring attached to the butt (Fig. 5, not shown] or a leaf spring integral with the butt formed from suitable plastics material (Fig. 6, not shown). The weaker spring 41 (Fig. 7, not shown) may be incorporated with the main spring 36 to give a relatively weak force on the butt at the beginning and end of the action.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7913673A JPS5422084B2 (en) | 1973-07-13 | 1973-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1444833A true GB1444833A (en) | 1976-08-04 |
Family
ID=13681524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2279774A Expired GB1444833A (en) | 1973-07-13 | 1974-05-22 | Upright piano action |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5422084B2 (en) |
| GB (1) | GB1444833A (en) |
| MY (1) | MY7800469A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1973
- 1973-07-13 JP JP7913673A patent/JPS5422084B2/ja not_active Expired
-
1974
- 1974-05-22 GB GB2279774A patent/GB1444833A/en not_active Expired
-
1978
- 1978-12-30 MY MY469/78A patent/MY7800469A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5422084B2 (en) | 1979-08-04 |
| JPS5028821A (en) | 1975-03-24 |
| MY7800469A (en) | 1978-12-31 |
| DE2426312A1 (en) | 1975-01-30 |
| DE2426312B2 (en) | 1977-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |