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Action by Andreas and Nanette (Stein), Streicher Viennese escapement (1794)

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Action by Andreas and Nanette (Stein), Streicher Viennese escapement (1794).png Iron plate for upright pianoforte with Agraffes (Mehlin patents)MiniaturesEnglish direct lever grand action, developed by Broadwood from Backers (1884)Iron plate for upright pianoforte with Agraffes (Mehlin patents)MiniaturesEnglish direct lever grand action, developed by Broadwood from Backers (1884)Iron plate for upright pianoforte with Agraffes (Mehlin patents)MiniaturesEnglish direct lever grand action, developed by Broadwood from Backers (1884)Iron plate for upright pianoforte with Agraffes (Mehlin patents)MiniaturesEnglish direct lever grand action, developed by Broadwood from Backers (1884)Iron plate for upright pianoforte with Agraffes (Mehlin patents)MiniaturesEnglish direct lever grand action, developed by Broadwood from Backers (1884)

 1. Key.
 2. Jack.
 3. Jack-operating spring.
 4. Cushion limiting rebound of jack.
 5. Button and screw regulating escapement of hammer.
 6. Hammer-butt and operating face.
 7. Hammer-butt pivot.

 8. Hammer-shank.
 9. Hammer-head.
10. Check.
11. Damper-lifter.
12. Damper-head.
13. Action-rails.