File:Wornum5384.svg
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Summary
| Description | detail, Robert Wornum's double action for the professional piano-forte |
| Date | |
| Source | Patent for improvements in piano-fortes - English patent no. 5,384 |
| Author | Robert Wornum (1780-1852) |
| Other versions | reproduced in Lawrence Nalder, The Modern Piano The Gresham Press, Old Working, Surrey. 1927 p.120 |
c Socket, d Hammer, e Hammer ruler, f Hammer rail, g Sticker, e Damper wire and button, h Check lever, j Check, k k Hopper centre and mortoise bushed, lHopper spring fixed to sticker, m Dog spring fixed in hopper to keep the hammer from dancing after the blow, n Lifting wire for check fixed in sticker with worm and slipped into check lever : hole bushed.
Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:24, 8 October 2007 | | 465 × 1,224 (27 KB) | Mireut | {{Information |Description=Robert Wornum's double action for the professional piano-forte |Source=Patent for improvements in piano-fortes - English patent no. 5,384 traced by User:Mireut |Date=July 4, 1826 |Author=Robert Wornum (1780-1852) |Permission |
| 21:22, 8 October 2007 |  | 507 × 1,277 (93 KB) | Mireut | {{Information |Description=Robert Wornum's double action for the professional piano-forte |Source=Patent for improvements in piano-fortes - English patent no. 5,384 |Date=July 4, 1826 |Author=Robert Wornum (1780-1852) |Permission= |other_versions=reproduc |
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