Here are some online photos I came across of Eureka upright models S-246 (2-Tone Brown, 1947-49) and S-255 (Wine Red & Gray, 1955-57). I have seen photos in different VL threads showing the Model S-250A (2-Tone Brown, 1951-55) but have yet to see one of the S-250 (2-Tone Brown, 1949-51); so I am curious what the difference(s) is/are.
I do know that the hood of the S-250/S-250A was more streamlined than the S-246's likely to better facilitate cleaning underneath low furniture; and the base was polished aluminum rather than brown like the S-246.
Incidentally, note the square handle on the S-246. Eureka's 2-speed uprights were equipped with that style until circa 1965 when the Model 260-E/-EK was introduced. Was the S-246 the first to have it?
As for the S-255, its hood is similar to the Model D-360's (dark brown monotone, 1947-49)—photo originally posted by HooverCelebrity. This "classic" hood style—or a variation of it—was used until circa 1989 when it was succeeded by the "narrow" style. I'm unsure if George Walker designed the S-250/S-250A & S-255's hoods or if it was Ralph C. Osborn (see the last patent posted below). I found no other patents for hoods (casings) in that era, and Mr. Walker's last patent assigned to Eureka was in 1946; although he may have been contracted later for updates.
The S-246 (& W-75A tank) ad is from the November 8, 1947, SATURDAY EVENING POST, and the S-255 newspaper ad is from the November 23, 1956, issue of THE WASHINGTON REPORTER.


















I do know that the hood of the S-250/S-250A was more streamlined than the S-246's likely to better facilitate cleaning underneath low furniture; and the base was polished aluminum rather than brown like the S-246.
Incidentally, note the square handle on the S-246. Eureka's 2-speed uprights were equipped with that style until circa 1965 when the Model 260-E/-EK was introduced. Was the S-246 the first to have it?
As for the S-255, its hood is similar to the Model D-360's (dark brown monotone, 1947-49)—photo originally posted by HooverCelebrity. This "classic" hood style—or a variation of it—was used until circa 1989 when it was succeeded by the "narrow" style. I'm unsure if George Walker designed the S-250/S-250A & S-255's hoods or if it was Ralph C. Osborn (see the last patent posted below). I found no other patents for hoods (casings) in that era, and Mr. Walker's last patent assigned to Eureka was in 1946; although he may have been contracted later for updates.
The S-246 (& W-75A tank) ad is from the November 8, 1947, SATURDAY EVENING POST, and the S-255 newspaper ad is from the November 23, 1956, issue of THE WASHINGTON REPORTER.

















