Hey Terry:
In the Earlier years alot of vacuums came with either a felt pad to add to the rug nozzle for floors or a separate attachment with the felt bottom (Filter Queen, Kirby, Miele, Goblin, Regina, Viking, Switson to name a few).
Alot of homes at the time had hadwood floors and the felt pad polished the floor as it cleaned, unlike floorbrushes, which could leave scratches in the polish.
Considering the resurgence of hardwood floors I'm rather surprised that more vacuums arent coming out with felt pads again.
Doug