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 Posted: Thu Mar 15th, 2018 07:25 pm
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Chris A. Campbell
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Looking through the census there are a few Emersons with serial numbers beginning with the letter "A"
Any ideas why? 

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Last edited on Thu Mar 15th, 2018 07:46 pm by Chris A. Campbell

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 Posted: Sat Mar 17th, 2018 03:06 pm
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Chris A. Campbell
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Any guesses?

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 Posted: Sat Mar 17th, 2018 04:15 pm
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Jim Humphrey
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Chris,
I guess I don't understand the question completely.  There are many Emerson serial numbers that begin with an alpha character, but is there something specific you've got in mind regarding the "A"s?  I don't have any idea why they used the alpha characters, but is your question more along that line?  I'm sure there's somebody in the AFCA that knows or at least has an opinion, though!

Last edited on Sat Mar 17th, 2018 04:16 pm by Jim Humphrey

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 Posted: Sat Mar 17th, 2018 05:29 pm
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Chris A. Campbell
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Have never noticed it until now. Just curious why some start with a letter. Seemed to denote something specific to their numbering.

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 Posted: Sat Mar 17th, 2018 06:17 pm
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Jim Humphrey
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I just checked, and in the past I had two 29646s with an alpha character in their S/Ns, an N and a W.  I've still got two fans, a 27646 and a 27666, both with an A prefix.  I think I remember seeing a lot of 29XXXs with alpha prefixes, but not sure how many or where.  Need somebody to help out here...
This thread has some info on the prefixes:  http://www.afcaforum.com/view_topic.php?id=44929&forum_id=1&highlight=prefixes

Just found it.

Last edited on Sat Mar 17th, 2018 06:26 pm by Jim Humphrey

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 Posted: Sat Mar 17th, 2018 07:30 pm
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Steve Stephens
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Our dearly departed Fan Whiz Bill Voigt had collected data on the Emerson prefix letters and here is what I got from him.   I don't know his source but he had very many Emerson fans and would constantly pour over them observing small differences.   I'm glad that I was able to find this information I got from Bill buried in my documents.  I cannot vouch for the accuracy of these details but I think they are pretty close to fact.   I have added the following to my blog:  http://earlyfans.blogspot.com/2011/07/dating-early-emerson-60-cycle-and-dc.html
Emerson letter prefixes:

A    27xxx plus early 28, 29xxx  maybe some early ones without the suffix & 27645  All A have screw-in oilers.  Forged looking high handles.  Black porcelain switch.

K    By 1924-25 and shortly after 28xxx and 29xxx types came out.  New motor winding/speed coil, switch base changed from ceramic to composition, hubs painted gold.  Press-in oilers, low "screen door" handle,  cage struts still with extra bends (not twists).

N    c.1927, Pyramid badge, straight cage struts on late N, higher rolled steel handle in use

T   All had pyramid badges, straight struts,  Improved Parker blades, 12" version about a year before 16" blade improvements.   Headwire access plate added sometime in the T prefix.   Late T or early W flared out larger oil cap.

W  All had headwire access plates, composition round switch on early W

(blank space for serial number)
(new tag with no place for serial number)

AK   1937 first capacitor motors.  73646 AK were the first

First date code:  Bill has seen a "9" for 1929   He's possibly seen an "8"

12xxx and 16xxx power cord came out back.   C. 1915 headwire outlet on base and power cord inlet moved to 45 deg. to right of center for better headwire routing when fan is wall mounted.

Last edited on Sat Mar 17th, 2018 07:50 pm by Steve Stephens

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 Posted: Wed Nov 7th, 2018 10:15 pm
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Chris A. Campbell
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Thought would bring this up again for fresh eyes.

Does anyone know why Emerson on occasion would include a letter at the begining of a serial number. This occurs on many models across both AC and DC.

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