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While we still haven't found any technical information that was produced by the manufacturer, we have received a number of pictures to help identify the Krell plasyer system. Below are a couple of those pictures, and below them are links to others that shows what's inside the stack (or windchest). Below them are some of the comments that were left at the Player Piano Talk group on Facebook. Update 11/24/2024: We have located numerous patents from Peter Welin, who did work for Krell. They have been added below.
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US872313.pdf US889165.pdf US928295.pdf US928296.pdf US943802.pdf US944006.pdf US945882.pdf US945883.pdf US945884.pdf US945885.pdf US945886.pdf US945887.pdf US945888.pdf US945996.pdf US957590.pdf US961824.pdf US962685.pdf US971866.pdf US990177.pdf US999281.pdf US1015029.pdf US1021785.pdf US1023844.pdf US1034048.pdf US1045226.pdf US1047598.pdf US1059094.pdf US1063898.pdf US1085650.pdf US1089721.pdf US1091175.pdf
Dan Tuttle: More on the Krell player piano that Blaine Henry Rodgers was speaking of yesterday. I have included pictures that I posted over a year ago of the one I repaired. This one worked well although the thing is a nightmare to get out of the piano, both top unit and bottom unit, if you need to get them out for repairs to the piano action or replacement of strings. It also had a lead tracker bar which I've never seen before. It appeared to be in good condition. However, only about one third of the notes would play. I finally changed it over to a spare Aeolian brass tracker bar I had laying around, and it then worked properly. The lead tracker bar was tight (not leaking) and each hole would allow air to go thru. I suspect that the inside of some of the holes were oxidizing and not allowing enough air through to signal the notes. Doug L. Bullock: I am rebuilding this exact crazy Krell stack. It has primary valves that are glued to the back of the pouch board. Not even steaming it would get the glue joints to come loose. Soaking overnight also did no good whatsoever. I am fabricating several of the stack parts that did not survive the process. I also am having dies made to cut all valve leathers and gaskets for the aluminum plate valve seats with the teardrop hole in them. |
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Since "Player-Care" is an internet business, I prefer that we correspond via E-Mail (click here to fill out the 'Request Form'). However, if I'm not in the middle of some other activity, you can reach me at 732-840-8787. But please understand that during the hours from 8AM-5PM EST (Mon-Sat), I'm generally quite busy. So, I probably won't answer the phone. If you get the answering machine, please leave a detailed message stating the reason for your call. Also, repeat your name and phone number clearly and distinctly. By necessity, I prioritize everything in my life. And, if you call and just leave your name and number, and ask me to call you back, it might be a day or two before I return your call. Why? Because I don't know why you want me to call and I might not be prepared to assist you in an effective and efficient manner. If you leave me an E-Mail address (which I prefer), spell it out phonetically. The more you do to help me, the more I can help you in return. Don't rush. You have four minutes to record your message. |
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