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MMD
Tech
DuoArt
grimes_fan1
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End-of-Year Fundraising Drive In Progress. Please visit our home page to see this and other announcements:
https://www.mmdigest.com Thank you. --Jody
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by Bruce Grimes (040517 MMDigest)
Attached are two photos of the Duo-Art fan system I'm particularly looking for. They were apparently designed for the above keyboard "drawer" models. Those are the ones that have spoolbox, stack and expression box in a sliding drawer, all above the keyboard. Note they have leaf springs but no wound coil springs (saves space). Presently I know of several complete pianos with this system, and several units on parts shelves, accounting for six of this model. The earliest piano with one of these seems to have been built in 1928. Development would have to have taken place probably in 1926 or 1927. My guess is there are more. They do not take long-play (Jumbo) rolls; so far as I have seen, though, I would not be surprised to see one of the jumbo top-action spool-boxes fitted into one of these above keyboard drawers. I would like to beg, borrow, rent one of these expression boxes that only has leaf springs for a month. Would buy, if necessary. Would also like to buy a Duo-Art transposing tracker bar. Bruce Grimes
17 May 2004 |
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