Derek Warnecke Posted February 23, 2022 Share Posted February 23, 2022 Is there any sort of known date range assigned to 1920s Emerson fans based on the alpha serial prefix? This is, of course, for pre-1929 fans without the numerical date code. Quote Link to comment Share on other sites More sharing options...
Steve Stephens Posted February 23, 2022 Share Posted February 23, 2022 I and the AFCA had a friend, now deceased who was very knowledgeable on fans of the teens through the 30s. Bill Voigt had a collection, not to work on or restore, but to admire and note the differences and to study the motor construction. Bill was a very smart man and I copied down some of his research including the followingl. This should help with the letter prefixes. I cannot vouch for the accuracy: 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. 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. 2 Quote Link to comment Share on other sites More sharing options...
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