Abstract: A rocker box for furniture and the like, comprising: a rockable top plate having two pairs of parallel laterally-spaced outer-depending side and inner-depending supplementary flanges containing perforations cooperatively providing four pivot-receiving openings on a common transverse axis, one outer side and one inner supplementary flange being located at each of the opposite sides of the box, each inner supplementary flange being spaced inwardly from the corresponding outer side flange so as to cooperate therewith in delimiting an interposed upper flange space; a non-rockable bottom plate having one pair of parallel laterally-spaced outer upright side flanges, one for each upper flange space, each upright side flange projecting upwardly from the bottom plate into the corresponding upper flange space where it is parallel to the corresponding depending side and supplementary flanges, said pair of upright flanges cooperatively providing two more pivot-receiving openings on said common transverse axis; and a pair

Abstract: A pair of relatively rotatable face-to-face metal swivel plates centrally secured together adjacent the common center axis and arranged along their respective margins for respective securement to an article and the base. A continuous circular V-shaped bearing race is formed in one metal plate to extend concentrically about the center axis and spaced a substantial distance therefrom. A frictionless plastic bearing material is not only interposed between the metal plates with its opposite sides engaging opposite plates for bearing and spacing purposes but is also curved arcuately to conform to the circular curvature of the race. One side of that material is V-shaped to extend into and conform to the V-shape of said race sufficiently along the length of the race for centering one plate. The opposite side of that same material and the other metal plate mutually cooperate to provide complementary centering means.