Abstract: An impeller which is adapted to be affixed to a rotating shaft is provided for aerating a liquid and includes a support disk having a circular outer edge. The support disk is affixed to the rotating shaft in such a manner that it is maintained in a substantially perpendicular relationship with the shaft. A plurality of impeller blades are affixed to the support disk in such a manner as to be spaced from the shaft and extend above the upper surface of the support disk and below the lower surface of the support disk. The impeller blades further extend outwardly from the circular outer edge and have an upper edge which lies in a plane substantially parallel to the support disk. Each impeller blade which is tapered causing the blades to be widest at the portion closest to the rotating shaft and progressively more narrow as the blades extend outwardly from the support disk.

Abstract: A quick response gasifier spool for an automotive gas turbine engine has a shaft with a turbine wheel connected on one end thereof with a row of turbine blades driven by motive fluid from an engine combustor and further has a low inertia centrifugal compressor impeller with a low mass hub secured to the opposite end of the shaft. The impeller has a plurality of separate, free formed blades each having a root segment integrally formed with the hub; the blades including spaced apart radial tip portions joined by a continuous ring of span splitter elements located on the radial extent of each of the blades to prevent flutter between adjacent free blade radial tips and wherein each element of the continuous ring includes a leading edge and a trailing edge joined by a curved segment located along a flow streamline path between each of the individual blades.

Abstract: A fluid-flow machine. At least one substantially disc-shaped rotor has a plurality of fluid-flow channels therethrough. Each fluid-flow channel comprises rectangular shaped inlet and outlet openings on opposite sides of the rotor disposed at different distances from the axis of rotation of said rotor, a tangential inlet channel portion including the inlet opening for receipt of a fluid-flow medium, a tangential outlet channel portion including the outlet opening for discharge of the fluid-flow medium and a circular radial connecting section between the channel portions having curved opposite ends connecting said inlet portion to said outlet portion completely around the perimeter thereof. Each channel portion has a direction, for directing the fluid-flow medium, which has a transverse and an axial component relative to the axis of rotation of the rotor. The axial components are in the same direction and the transverse components are in the opposite direction.

Abstract: A drum-type impeller for a centrifugal blower is provided with reinforcement against damage by centrifugal force at high peripheral speeds by reinforcing means such as gussets or rods running from the underside of each blade toward either or both of the hub disk and inlet ring and inserted near the attachment thereat of the trailing blade. Vortex formation at the underside of a blade inforced by a gusset is reduced by providing a notch at the point of attachment of the blade at approximately the same radial distance as the leading edge of the gusset. Vortex formation at the trailing surface of a gusset is relieved by using a double gusset with a slot between.

Abstract: A fabricated crown for a Francis-type hydraulic turbine runner. The crown is fabricated from an integrally formed inner circular portion and a pair of outer semi-circular portions welded thereto. The inner circular portion provides a rigid section of high integrity to which the runner shaft is connected.

Abstract: Rotary distributor plate for distributing particles of solid or liquid material in a centrifugal-type classifier includes a plate-like member having an upper surface, and means carried by the surface for uniformly throwing off from the plate-like member particles of material fed thereto.

Abstract: A multi-blade impeller for a hydrodynamic pump, fan or the like. Each blade has a curved pressure and a curved suction surface. The pressure surface has a curvature, the angle of inclination of which gradually increases from the leading edge to a first point and then decreases to the trailing edge. The suction surface has a curvature, the angle of inclination of which gradually decreases from the leading edge to a second point and thereafter increases toward the trailing edge. The first point is determined by the intersection of a logarithmic spiral from the trailing edge of the adjoining blade with the pressure surface, while the second point is determined by the intersection of a second logarithmic spiral from the leading edge of the other adjoining blade with the suction surface.

Abstract: A device for stirring a liquid having two cup-shaped elements coaxially mounted on the end of a shaft. Radial vanes extend between the two elements to define liquid flow passages, the liquid entering from a hole at the apex of the outer cup. The outlet end of each of the vanes is bent at approximately a right angle to the rest of the vane.