Louis Luu Posted February 24, 2023 Posted February 24, 2023 Need to find some more drawings for this double double bipolar that goes 360. Quote
Jim Kovar Posted February 24, 2023 Posted February 24, 2023 (edited) That patent has fascinated me ever since I first saw it many years ago in Paul Pierson's compilation of fan patents. Bought the two volume book at one of the Wichita FFs? How cool,... two armatures within the same series magnetic circuit... Concidered a single motor? Or two? As far as I know, the three drawings shown above are it,... no others. As were many patents of that era, I think the fan was only conceptual,... never produced. Someone!, please prove me wrong. I'd eat crow with a big smile. Edited February 24, 2023 by Jim Kovar 1 Quote
Jim Kovar Posted February 24, 2023 Posted February 24, 2023 1 hour ago, Jim Kovar said: How cool,... two armatures within the same series magnetic circuit... Another way of having twoarmatures within the samemagnetic circuit. Is a parallel magnetic circuitin this case. Quote
Jim Kovar Posted February 24, 2023 Posted February 24, 2023 1 minute ago, Jim Kovar said: Another way... Assuming both blade setsblow outward... Quote
Louis Luu Posted February 24, 2023 Author Posted February 24, 2023 It is also set up as a ceiling fan? Three blades. Quote
Russ Huber Posted February 24, 2023 Posted February 24, 2023 (edited) 1498407349937845536-01094540 (storage.googleapis.com) Edited February 24, 2023 by Russ Huber Quote
Russ Huber Posted February 24, 2023 Posted February 24, 2023 The only one of the images I posted, including the posted in past Ketcher patent that can be proven manufactured is the Essex triad combination gyro/CF. They were placed on the market in 05. By 1909 Essex went belly up not paying their taxes. Quote
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