Abstract: Disclosed herein is a supporting assembly that allows easy assembly of a furniture. The supporting assembly includes structures that employ easy-to-use locking mechanism so that a user may assemble a furniture at desirable configuration without using a tool.

Abstract: The catalyst system disclosed herein comprises one suitable for the polymerization of a conjugated diene, which system comprises a trihydrocarbyl aluminum compound, in which the hydrocarbyl group is an alkyl, aryl or cycloalkyl radical of 1-10 carbon atoms, and an alkali metal compound of the formula M--Y--R wherein M represents Li, Na or K; Y represents O, S or NR.sup.1 ; R represents H or a hydrocarbyl group of 1-10 carbon atoms; R.sup.1 represents a hydrocarbyl group of 1-10 carbon atoms, an acyl group of 1-10 carbon atoms; and when Y is NR.sup.1 the R and R.sup.1 can represent divalent groups so that together they form, with the N, a cyclic radical such as piperdyl, morpholino or diethylene diamino. Lithium alkoxides are preferred forms of the MYR formula and Al(CH.sub.3).sub.3 and Al(C.sub.2 H.sub.5).sub.3 are preferred aluminum components.