When did Filter Queen introduce there Power Head?
I guess we need to wait to see if Evan, or another Filter Queen lover has the answer, but I'll dare guess 1974-1975. It seems that that was around the time that most manufacturer's who werent already on the bandwagon, started to get with it, and offer a powered brush, or beater brush nozzle.
This was brought up before, but it seems that Kenmore was technically first electrically driven powernozzle as we know it in 1957-58 with the Power-Mate optional on several different models, and Whirlpool, who made all Sears vacuum's at that time, were also putting out their own version's at the same time. This was followed by Lewyt in 1958-59 with the Electronic, and one other model that was not as problematic, and Electrolux with their PN1 in 1959-60 I believe.
After that Eureka seemed to have a proper powered nozzle by 1972 or so with the Roto-Matic, and then Hoover in 1974 or 75 with it's PowerMatic.
Air-Way having it's own long history with powernozzle add on's happened duirng the 1960's and 70's with various heads,some of them being reconstituted upright vacuum cleaner heads by Hamilton Beach and Eureka; then Compact, Douglas, Electro-Hygiene, FairFax, General-Electric, Premier, Royal, Rexair, Sunbeam, Singer, Thermax amongst others all jumped in during the duration of the 1970's. Each brand either using thier own design, or a design supplied for it by a supplier.
An example is the Eureka Roto-Matic head was used by both Compact, FairFax and Rexair.
The Hoover Head was used by Hoover and FairFax and Thermax
Sorry a little over information never hurts anyone.
Chad