File:Britannica Pianoforte Wornum Upright Action.png

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Description
English: Robert Wornum's upright piano action of 1826. The original of the now universal crank action in upright pianos.
Date
Source Encyclopædia Britannica, 11th ed., Vol. 21, p. 570
Author Robert Wornum
Permission
(Reusing this file)
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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eceddf04812dca89f09608977422300cac50170a

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Date/TimeThumbnailDimensionsUserComment
current00:53, 27 August 2009Thumbnail for version as of 00:53, 27 August 2009372 × 1,030 (14 KB)Bob Burkhardt{{Information |Description={{en|1=Robert Wornum's upright piano action of 1826. The original of the now universal crank action in upright pianos.}} |Source=Encyclopædia Britannica, 11th ed., Vol. 21, p. 570 |Author=Robert Wornum |Date=1826 |Permission={{

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