Abstract: A gas turbine engine intended for airborne applications in which several of the main bearings of the engine are contained in a bearing cavity and oil is scavenged from this cavity by allowing air from the high pressure region of the engine to leak into the cavity and then flow downwardly, together with entrained scavenge oil from the cavity, through an oversized cored passage housing a quill shaft driving the accessory gearbox for delivery to a crude separator at the bottom of the gearbox where the air is discharged to a low pressure region of the engine and the deaerated oil is delivered to the inlet of the scavenge pump. The leakage air flow effectively scavenges oil from the bearing cavity in all attitudes of the engine and also induces a flow of scavenge oil from the gearbox during upright operation.

Abstract: An article of manufacture for shielding the interior of each of a succession of container bodies from impurities present during fabrication is disclosed. The article has a base plate having a distal end and a first impurity deflection member extending downwardly therefrom at an obtuse angle with the base plate. The first impurity deflection member is adapted to be disposed adjacent to a forward open end of one of the succession of container bodies during a predetermined sequence of fabrication to prevent impurities from passing into that container body through the forward end thereof.