Abstract: Apparatus for the discontinuous production of articles from a foamed plastic, including metering vessels for reaction components arranged above a mixing vessel. The metering vessels are with the interposition of communication bellows connected to the mixing vessel. Inside the cover of the mixing vessel exists an annular space communicating with an annular slot which opens towards the internal wall of the mixing vessel, so that when filling the mixing vessel first one of the reaction components is introduced into the annular space, flowing along the inner wall of the mixing vessel downwardly through the annular slot and in this way flushes off any residue.

Abstract: An upholstered body, especially mattress, with a spring core which is provided with at least one cover plate of elastic foam material, and has on at least two opposite sides thereof inwardly of the plate respectively arranged a marginal body member of elastic foam material. In the transition area between the cover plate or cover plates and the marginal body members on at least two oppositely located sides of the upholstered body, there are provided bend-elastic bar-shaped stiffening bodies which consist substantially of compacted synthetic foam material, preferably of the same type the marginal body members are made of and preferably integral therewith. These stiffening members are located at the inside of the adjacent cover plate. Interposed between the at least one cover plate and the adjacent ends of the springs is an intermediate layer having its marginal areas connected to the stiffening bodies.