The wife & I were rummaging through some antique stores this afternoon and I ran across this Trico Vacuum Fan. Probably go better with my 48 but I think it might look neat in the 29 ? Any comments:
(http://www.1948plymouth.info/galley/var/resizes/chetbrz/TricoFan01.jpg)
It probably came available in the late 1930's. Definitely pre WW2. I also found this document on the Internet.
Looks neat. Probably a little modern for the '29, but maybe not. frank
Ya! It's really neat, only about 5.5 inches from top to bottom. Fan is only 3.25 inches in diameter. Fan cage is 4" in diameter.