Abstract: The present invention is directed to printed substrates having a metallic finish and methods for producing such printed substrates, preferably using an offset lithographic press. The method comprises coating a printing substrate with three coats of ink applied successively as follows: (1) a first coat comprising a solid color corresponding to the final color of the desired printing substrate; (2) a second coat comprising a moire pattern color; and (3) a third coat comprising water pearl.

Abstract: A continuous flow liquids-solids separator for removing particulate solids suspended in gas scrubbing liquids used in industrial stack gas scrubbing systems. The separator includes a solids separating tank having a pair of parallel perforated walls and an inlet aligned to direct an entrant flow of the liquid-solids suspension in a direction generally parallel with the perforated walls to promote separation of the suspension such that particulate solids are retained in the tank while the scrubbing liquids flow into a liquids reservoir. The tank is supported within the reservoir and is connected with a bleed discharge line which accomodates continuous evacuation of the retained solids from the tank concurrent with the discharge of scrubbing liquids through an outlet in the liquids reservoir.

Abstract: A quenching device for a hot, dirty gas stream, the quenching device being disposed between a flow-through duct carrying a hot, dirty gas stream and a housing to treat the gas, the quenching device including a pair of cooling water sources in parallel transversing the gas stream. The quenching device further includes means to prevent dirt build-up at the entrance of the housing due to entrainment of the dirt in the cooling water flowing through the gas stream.

Abstract: An airfoil for an aircraft having a first surface extending between the leading edge and the trailing edge, and a second surface joined to the first along the leading edge and projecting rearwardly in the direction of said trailing edge. The second surface of the airfoil terminates materially in advance of the trailing edge to define a step-like discontinuity of the airfoil. One or more lift generating members are pivotally mounted on the second surface of the airfoil adjacent the step-like discontinuity. The lift generating members are selectively movable to various positions relative to the airstream to alter the aerodynamic forces on the airfoil during conditions of flight.