Eurekaprince, i remember the Hazel episode you are talking about,no you not dreaming it up,,where Hazel buys a monsterous cannister vac from a door to door salesman, and lives to regret it,,im sure it wasnt a Lux.
It was some sort of monster vac made up by the show's producers to look like a crazy contraption,,so that "Mr B" (Hazel's boss) could have something to really get mad at!
Also on Mama's family,,, i remember there is an episode where Mama is vacuuming the couch in the living room with an late 70s, blue Powermate Kenmore,,the one with the fake woodgrain top,,,she is either using the upolstery brush, or the crevis tool on the end of the hose. They dont show the powermate.