Abstract: An apparatus for rotatably mounting a steering wheel to a steering column is provided. A core having a central bore is attached to the steering column. A housing is rotatably mounted to the core. A steering wheel is fixed to the housing. A central shaft extends away from the housing through the bore. A locking assembly is mounted to the housing which can be selectively engaged to the core such that, in an unlocked position, the housing can rotate with respect to the core and, in the locked position, the housing is fixed with respect to the core.An apparatus is provided for mounting a steering wheel to a steering column such that the steering wheel can be selectively disabled. A core is attached to the steering column. A track is located at the periphery of the core. A slot in the core extends from the track. A housing is fixedly attached to the steering wheel and rotatably mounted to the core. A lock assembly is mounted to the core having an end located on the track.

Abstract: Alkali metal citrates are prepared by the addition of an alkaline alkali metal base or salt to citric acid solutions and recovered in solid form by the addition of a C.sub.1 to C.sub.5 alcohol to the solution to cause precipitation.

Abstract: An aqueous solution of a mineral acid is freed of dissolved or colloidally dispersed organic matter by admixing to the solution an aldehyde or an aldehyde oligomer and a compound copolymerizable with an aldehyde, allowing a polymerization reaction to occur and separating the resulting polymer. The polymer that forms removes selectively from the solution the said organic matter and any suspended organic matter is also removed. The aldehyde and the compound copolymerizable therewith may be added in the form of a pre-condensate.