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.
Date
Source Encyclopædia Britannica, 11th ed., Vol. 21, p. 569
Author Sébastien Érard
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Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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current23:45, 26 August 2009Thumbnail for version as of 23:45, 26 August 2009943 × 548 (22 KB)Bob Burkhardt (talk | contribs){{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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