Russ Huber Posted January 31 Share Posted January 31 Tell me what you think. Did the BMY desk fans 1908-09/early10 only have one centrifugal switch design? Or are you convinced there were more than one? Quote Link to comment Share on other sites More sharing options...
Patrick Ray Posted January 31 Share Posted January 31 Clearly they were trying to figure out a design that works. Photo 1 reminds me of an Emerson, whereas photo 3 kinda reminds me of Westinghouse. What the heck is going on in 2? Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted January 31 Author Share Posted January 31 BMY serial number 332927. We can bump this one out of the line-up completely as a repair shop CLEVERLY replaced the original mechanism with a Westinghouse stamp steel centrifugal mechanism. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted January 31 Author Share Posted January 31 So were down to these 2 BMY centrifugal mechanisms. Do you think GE used both between the years of 08-early 10? Past posts would give you that impression. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted January 31 Author Share Posted January 31 7 minutes ago, Russ Huber said: So were down to these 2 BMY centrifugal mechanisms. Do you think GE used both between the years of 08-early 10? Past posts would give you that impression. Do you think they used one before the other as an improved update between 1908-early 10? The 1909 fan motor bulletin below with the AC desk fan parts. 1910 GE fan motor bulletin does not support the centrifugal mechanism in the AC desk fan parts. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted January 31 Author Share Posted January 31 (edited) 20 minutes ago, Russ Huber said: Jim Humphrey Serial No. 388038 Jim Humphrey Serial No. 334,431 Russ Huber Serial No. 332,869 Russ Huber Serial No. 339176 Edited January 31 by Russ Huber Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted January 31 Author Share Posted January 31 Do you really think GE was using two different centrifugal mechanisms during 08-early 10? Or, should you think this centrifugal mechanism was a replacement for the original down the road. GE dumped the mechanism starting in 10 for a reason. They announced its dismissal in the 1911 fan motor bulletin as a problem child. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted January 31 Author Share Posted January 31 If your early GE BMY has this centrifugal mechanism, it is probably original. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted January 31 Author Share Posted January 31 (edited) Early BMY split phase stator winding. Later BMY split phase stator winding. Edited January 31 by Russ Huber Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 1 Author Share Posted February 1 (edited) The 16" on the far right first image was a 361,XXX serial. GE appears to have changed their centrifugal start stator winding between 361,XXX and 388,XXX serials. Serial 388,038 Edited February 1 by Russ Huber Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 1 Author Share Posted February 1 (edited) Serial 338,020. There are at least a handful or a couple of these mechanisms found in the BMYs. No clue for sure if they are GE product down the road, or not. Edited February 1 by Russ Huber Quote Link to comment Share on other sites More sharing options...
Anthony Lindsey Posted February 1 Share Posted February 1 Here is one for comparison. It also has that "Thingy" on the neck for adjusting. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 1 Author Share Posted February 1 Awesome Anthony, you just tightened the stator winding change between serials 361,XXX and 374,XXX. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 2 Author Share Posted February 2 (edited) Can anyone offer a logical explain where this example belongs in GE BMY history? Serial 331392. Edited February 5 by Russ Huber Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 2 Author Share Posted February 2 1910 GE fan motor bulletin with the first image of the pivot adjustment pull knob seen in the post above. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 2 Author Share Posted February 2 I have a logical theory about the fan above and link below serial 331892. I am curious if someone else has the same theory. As it is, it makes no sense in the Eckerson fan motor construction serial timeline. It was posted in 2018. The old website link below. GE BMY - Pre-1950 (Antique) - Antique Fan Collectors Association - AFCA Forums Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 2 Author Share Posted February 2 Now, if you're working on a theory to explain the BMY above with serial 331892. Keep in mind it has 1910 GE catalogue base with an instruction label on the switch cover dated for 02/26/09. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 2 Author Share Posted February 2 (edited) On 2/2/2024 at 10:26 AM, Russ Huber said: Can anyone offer a logical explain where this example belongs in GE BMY history? Serial 331892. My impression/theory of this BMY example is based on the extreme distance of its motor serial, other components, and numbers of BMY examples that logically do set up a sequence based on fan motor construction. The BMY motor based on its earlier stator winding pattern, and its struts and guard, fit its tag serial 331,392. There is nothing in GE literature to support the switch cover instruction sheet dated 02/26/1909 as gospel the base, its components and trunnion dates early 1909. The 3 footed base extends into 1910 top mount flat strut models. I know there is the "Never say never" approach, and I can't prove anything. But me thinks somewhere in this fans history someone slapped an early GE BMY fan motor, struts, and guard together with a blade, base, and trunnion from an early 10 model. 🙂 Edited February 5 by Russ Huber Quote Link to comment Share on other sites More sharing options...
Steve Rockwell Posted February 2 Share Posted February 2 (edited) Right now, I see nothing in your final sentence to contradict. The pivot point height alone confirms the base/yoke to not be first variant. The face mount struts are early motor... in the 12-inch version. To my knowledge, no has gathered and collated the information on 16-inch BMY fans, and I had a face-mount flat-strut 16-inch BMY with serial number 394591, wearing round-headed trunnion screws, which proves the rule(s) as well as illustrates the never say never saying... It had no base plate instructions (switch cover instruction sheet) for any confirmation... and I have seen one instance of such a BMY sheet dated earlier than 2-26-09. Check with Jim Humphrey about that other centrifugal switch... Edited February 2 by Steve Rockwell Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 3 Author Share Posted February 3 (edited) On 2/2/2024 at 4:49 PM, Steve Rockwell said: Check with Jim Humphrey about that other centrifugal switch... Maybe we are not on the same page, no fault of yours. I will just run it over again. Nothing to check. I have a 12" BMY serial 339176 with the same switch seen here. In the event my point was missed, the point I was driving at is based on early BMY serial numbers and the switch examples in them, BOTH switch examples would have had to have been installed at the same 08-early 10 time period based on serial dating and the switches seen in them. Not a later 08-early 10 variant replacement switch for the old. Why would GE have been installing two different switches at the same time 08-early 10? The switch seen here based on reasoning/logic must have been a replacement switch down the road for the one, and only one they were installing 08-early 10. I tried scanning Google patents for either switch over a number of years and failed to pin either switch down. Edited February 5 by Russ Huber Quote Link to comment Share on other sites More sharing options...
Marc Sova Posted February 4 Share Posted February 4 On 1/31/2024 at 4:15 PM, Russ Huber said: Early BMY split phase stator winding. Later BMY split phase stator winding. Quote Link to comment Share on other sites More sharing options...
Marc Sova Posted February 4 Share Posted February 4 So my bmy c frame….is likely none of these? I mean….doesn’t have the centrifugal start at all? Have to revisit my thread on it here. Quote Link to comment Share on other sites More sharing options...
David Kilnapp Posted February 4 Share Posted February 4 Fascinating, informative thread. Thank you, gentlemen (especially you, Russ)!! Quote Link to comment Share on other sites More sharing options...
Kim Frank Posted February 4 Share Posted February 4 In my opinion, the fan you were asking about it's place in history, has the wrong base. Seems to me I've only seen that base, with the adjustment button, on the Sidewinder model. The first two model BMY's had no slot in the bases for the trunnion to pivot. It's been my experience that there are four variants of the BMY. The first is the 1908 BMY with face mounted struts. I have serial number 330813 in 16 inch with the earlier CSS. In 12 inch I have s/n 333661 with same CSS. The 12 inch 1908 BMY I recently did a post on, s/n 341xxx has the later CSS. The second variant BMY, overlooked by many is the same squat base BMY with the perimeter mounted struts. It also uses the centrifigal start switch. The third variant is where one starts to see the slotted pivot in the base neck. The cast brass badge hub on the cage is first seen in wrapped rear ring Pancake cages starting in 1904. Also used up thru 1908 in both cakes and BMY's, though the cakes also had pinned rear ring cages, up through 1908. Later BMY cages use the stamped brass spider to hold the s-wires. While today I only have three 1908 BMY's to bookend my Pancake collection, from 2000 thru 2010, I collected all of the BMY and oscillating models, along with every mfg that used the BMY motor. These included FWEW, Hunter, Diehl, Eck, Jandus, and Westinghouse. Other than the Ft.Waynes, I don't recall the others using a start switch, but that's been close to 15 years since I sold them all. Quote Link to comment Share on other sites More sharing options...
Russ Huber Posted February 5 Author Share Posted February 5 (edited) Kyle Koser's early BMY motor centrifugal switch in restoration process. Serial 331283. Michael Beaudette's early BMY motor centrifugal switch. Serial 331392. Jim Humphrey's later BMY motor centrifugal switch. Serial 388038. Edited February 5 by Russ Huber Quote Link to comment Share on other sites More sharing options...
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