Abstract: A hollow housing is provided including a top wall having a plurality of horizontally spaced openings formed therein and each of the openings has a depending cylindrical wall structure operatively associated therewith and supported from the top wall. The lower ends of the cylindrical wall structures include diametric slots formed therein and perm rod support and elevator structure in the form of a grid structure is mounted within the housing with various grid bars thereof extending through and vertically shiftable in the cylindrical wall structure diametric slots. The grid bars form vertically shiftable floor portions for the cavities defined by the top wall openings and the cylindrical wall structures dependingly supported from the top wall. Vertically disposed perm rods are downwardly receivable within the aforementioned cavities and have their lower ends abutted against and supported from the grid bars.

Abstract: An upwardly opening receptacle is provided including upstanding peripherally extending sides and the receptacle is closed at its lower end portion by a false bottom wall extending between and sealed relative to the sides above the lower ends thereof. The receptacle sides extend downwardly below the false bottom wall and define a downwardly opening recess therebelow bound by the lower end portions of the sides. The false bottom has a central upstanding bore formed therethrough and an upstanding shaft is sealingly journaled through the bore and includes blade structure carried by the upper end thereof closely overlying the false bottom wall. Bearing structure is supported from the lower end portions of the sides which extend below the false bottom wall and the lower end of the shaft is guidingly engaged with the bearing structure. In addition, the lower end portion of the shaft includes structure operative to receive rotary torque input.