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Grand Piano Action.
Here is a model of a grand action showing the parts. Once the key is depressed, the capstan lifts the undercarridge. This causes the repetition lever or "Whippen" to lift the roller and hammer to strike the string. If the note is played loudly the hammer shank flexes considerably during this process. The repetition lever allows the player great touch control as it holds the hammer close to the string ready for fast repetition.
 | 1. String |
12. Balance Rail |
23. Set-off Button |
34. Damper Spoon |
45. Hammer Felt |
| 2. Damper Felts |
13. Key Frame |
24. Drop Screw |
35. Repetition Spring |
46. Back-check Leather |
| 3. Damper Head |
14. Check Front |
25. Hammer Roller |
36. Wippen or Lever |
47. Hammer Top Felt |
| 4. Damper Rail |
15. Front Rail Washer |
26. Repetition Felt Block |
37. Capstan Screw |
48. Back-check |
| 5. Damper Wire |
16. Key Covering |
27. Set-off Button Felt |
38. Wippen Flange |
49. Back-check Felt |
| 6. Back touch baize |
17. Bat Pin (cricket bat) |
28. Repetition Lever Covering |
39. Wippen Top Flange |
50. Underlever Top Flange |
| 7. Key |
18. Action Standard |
29. Tail |
40. Hammer Rest Felt |
51. Underlever |
| 8. Balance Washers |
19. Regulation Rail |
30. Underlever Key Cushion |
41. Hammer Shank |
52. Balancing Weight |
| 9. Key Button Bushing |
20. Jack Regulation Screw |
31. Underlever Top Flange Screw |
42. Repetition Lever |
53. Underlever Frame |
| 10. Balance Pin |
21. Jack |
32. Check Wire |
43. Repetition Spring Regulation Screw |
54. Underlever Frame Flange |
| 11. Key Chase |
22. Jack Regulation Button |
33. Undercarriage |
44. Hammer Moulding |
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STANDARD "ROLLER" or "REPETITION LEVER" GRAND PIANO ACTION
This is the standard or "English" grand piano action. It has remained almost unchanged in design since about 1880, though there were also several other styles of action around the same time. Modern piano actions are all of this style.
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Last Updated on Wednesday, 02 May 2012 11:19 |
