Abstract: There are provided a process and apparatus for the reclamation of oil from emulsified mixtures of oil, water and particulate solids. Basic to the process is the introduction of the emulsified mixture to undergo reclamation into a settler providing an internal mixing centerwell in communication with a surrounding settling tank at a first temperature. Typically, the surrounding settling tank consists of a cylindrical zone and a conical zone. At a base of the settling zone is an exhaust for sludge and, if desired, water. At the opposed or upper end of the settling zone is a clarified-oil outlet, which is preferably in the form of an annular, peripheral weir. The mixing centerwell has an inlet and outlet for flow of a heating fluid, typically steam; or of a cooling fluid, typically water, therethrough. The emulsion and demulsifying agent are added to the central mixing zone. Agitation is substantially confined thereto. Operation may be on a batch, semi-continuous or continuous basis.

Abstract: A pair of molded plastic components are juxtaposed face to face to form a body, U-shaped in longitudinal cross section on a plane perpendicular to the juxtaposed faces and include flanges on the sides thereof. The external shape of the assembled body fits into a U-shaped space defined by the end of a wiper arm of the "shepherd's crook kind". The juxtaposed faces each have formed therein a transverse semi-cylindrical recess. When the sections are arranged face to face the recesses form a transverse bore to contain a grooved pin extending transversely from the side of a wiper blade harness. An internal circumferential projection in the recesses engages the groove in the pin; the flanges engage the side edges of the arm. A pair of resilient detents projecting outwardly from the web portion of the U-shaped body engage the web of the shepherd's crook arm.