Abstract: Powder feed cylinder assemblies and powder feeders are provided. A powder feed cylinder assembly includes a cylinder, a bit, and bushings. The cylinder has a main passage, a first feed channel, and a second feed channel, each feed channel at two axial locations between the cylinder's two ends. The bit extends through the main passage and has an outer surface including a helical channel formed thereon. A center bushing is disposed in the main passage between the two axial locations and has a first axially-extending passage through which the bit extends. The first end bushing is disposed in the main passage on one side of the center bushing and has a second axially-extending passage through which the bit extends. The second end bushing is disposed in the cylinder on the other side of the center bushing and has a third axially-extending passage through which the bit extends.

Abstract: A wine pouring spout that aerates the wine pouring therethrough comprises a generally tubular construction with a flow path extending along the axis of the spout. The flow path is provided with a Venturi constriction, and a Venturi intake port delivers ambient air to the low pressure zone of the constriction. A separate displacement air intake channel feeds displacement air into the interior of the wine bottle to replace wine discharged from the spout. The Venturi intake port includes a Venturi jet bushing with a jet passage therethrough. The Venturi intake port and the displacement air intake are located within a hooded rectangular housing extending outwardly and provided with a distal air opening. The housing directs ambient air to the Venturi intake port and the displacement air intake; and it catches any wine drops that may escape from the Venturi intake port.