File:1842wornumfig4.svg
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Summary
[edit]Description1842wornumfig4.svg |
English: Diagrams of the second and first improvements from the specification of the English patent granted to Robert Wornum, dated February 15, 1842; traced and colorized by User:Mireut |
Date | |
Source | Fig. 4, sheet 3, from Robert Wornum "Improvements in the action of pianofortes" English patent no. 9,262 February 15, 1842 |
Author | Robert Wornum |
a, key; b, hammer; d, hammer return spring; k, spring lever; l, strap of leather; m, hammer rail; n, rocking lever; p, projection; q, hopper; s, damper wire; v, damper lever; w, damper lever axis
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[edit]Public domainPublic domainfalsefalse |
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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.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 06:04, 4 June 2009 | ![]() | 531 × 156 (72 KB) | Mireut (talk | contribs) | (...inkscape 4.6) |
05:06, 4 June 2009 | ![]() | 531 × 156 (80 KB) | Mireut (talk | contribs) | (plain svg) | |
04:40, 4 June 2009 | ![]() | 531 × 156 (86 KB) | Mireut (talk | contribs) | {{Information |Description={{en|1=Diagrams of the second and first improvements from the specification of the English patent granted to Robert Wornum, dated February 15, 1842; traced and colorized by User:Mireut}} |Source=Fig. 4, sheet 3, from Robert |
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