1894 Patent No. 19,586 pneumatic action mechanical keyboard, Franz Hanke, Berlin
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- Location : United Kingdom
- Seller : allsortsofephemera (+21798)
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Patent No. 19,586 A.D.1894 Improvements in Pneumatic Actions or Relays for Mechanically Played Keyboard Musical Instruments.
"I, Framz HJamle. pf 9 pt. Strassburgerstrasse, Berlin, in the Empire of Germany, Organbuilder, do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement: This invention relates to a pneumatic action or relay for keyboard musical instruments that are played mechanically, the said action or relay being operated by a partial vacuum of suction instead of by compressed air..."
2 pages of text + 1 drawing which have been disbound from a larger volume.
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| Listing Type | Gallery Listing |
| Listing ID# | 230421622 |
| Start Time | Wed 04 Jun 2025 13:22:40 (BST) |
| Close Time | Fri 04 Jul 2025 13:22:40 (BST) |
| Starting Bid | Fixed Price (no bidding) |
| Item Condition | Used |
| Bids | 0 |
| Views | 19 |
| Dispatch Time | 3 Days |
| Quantity | 1 |
| Location | United Kingdom |
| Auto Extend | No |
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