Abstract: The present invention relates to a solution parts washer cleaning apparatus with increased vertical pneumatic cleaning agitation and that has a load capacity of up to two tons inclusive, a vertically reciprocating, non-tilting platform having continuous and three-way positive support and adapted to operatively engage an associated beam, an improved bearing arrangement that is mounted fixedly to a frame and designed for enhanced durability in part by remaining above the cleaning solution during operation of the apparatus. The cleaning apparatus has replaceable strips that secured to the corners of the beam. The cleaning apparatus has an automatic shutoff in the event of an emergency in the form of a fusible link.

Abstract: A molding composition is disclosed for forming in a single step a natural sandwich foam product having a cellular core and a thick, densified outer layer. A hard, particulate filler material such as fly ash is admixed with an unreacted, rigid polyurethane foam system, together with a density distribution control agent such as carbon tetrachloride which lowers the viscosity of the admixture. In molding, the mold cavity is charged with the admixture and the foam reaction is permitted to occur with the mold closed. The resultant, filled foam product has a thick outer layer formed adjacent the mold surface of substantially greater density than its core. In the densified layer, both the polyurethane and filler material components of the resultant product are concentrated to provide over three times the density of the core structure. Formulations are set forth which provide substantial layer thickness and an outer surface having a durometer hardness value of 50 or greater over the entire surface area.