"All That Heaven Allows", (1955), Lewyt big wheel green version. Cary Scott's, (Jane Wyman), housekeeper uses one while she is talking with her best gal pal, Sara Warren, (Agnes Moorehead), and she slams the bedroom door so they can talk without the noise.
Also, Loretta Young uses a Hoover 28 in, "The Farmer's Daughter", (1947), when she portrays housekeeper Katie Holstrum.
And one of the great ones, "Who's Minding The Store", Jerry Lewis fixing a Hoover 68. Absolutely hysterical.