File:Britannica Pianoforte Erard Double Escapement Action.png
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| Description |
English: Sébastien Érard's double escapement piano action of 1884. The double escapement or repetition is effected by a spring in the balance pressing the hinged lever upwards, to allow the hopper which delivers the blow to return to its position under the nose of the hammer, before the key has risen again. |
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| Date | ||||
| Source | Encyclopædia Britannica, 11th ed., Vol. 21, p. 569 | |||
| Author | Sébastien Érard | |||
| Permission (Reusing this file) |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:45, 26 August 2009 | | 943 × 548 (22 KB) | Bob Burkhardt | {{Information |Description={{en|1=Sébastien Érard's double escapement piano action of 1884. The double escapement or repetition is effected by a spring in the balance pressing the hinged lever upwards, to allow the hopper which delivers the blow to retu |
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