Abstract: A rotary centrifugal pump having an axial inlet and discharge in a casing together with an impeller having liquid impelling vanes on both surfaces thereof with the impeller having central openings enabling inlet liquid to be impelled by vanes on both surfaces of the impeller with the impeller being provided with spaced annular seal rings mounted on each side thereof. The pump includes a water cooled lubricant for a bearing and a seal box in which lubricant is maintained under pressure by the liquid being pumped. The pump is adapted for use as a single stage, multiple stage, or deep hole pump and is capable of producing relatively high pressures and high volume discharge.

Abstract: Radial runner blades projecting axially from a shroud plate have leading faces inclined from the axial central portions of the blades forward to a cutting edge adjacent to an intake casing wall at an angle of 45.degree.. The trailing wall of each blade is bent to form a reflex angle at approximately its axial central portion, and each blade flares in cross-sectional thickness from its axial central portion toward its edge adjacent to the intake wall. A screw propeller connected to the runner and located at the side of the intake wall opposite the runner facilitates flow of material to the pump toward the casing intake ports, slices sliceable articles into pieces of a size for passage through the intake ports and displaces unsliceable objects for clearing the intake ports.

Abstract: A hydraulic turbine is disclosed having wicket gate vanes which are rotatable between extreme positions to interrupt and permit the flow of water through a substantially cylindrical water passageway. In order to effectively block the flow of water through the passageway, the outer peripheral surface of the vanes must have a spherical configuration to match the circular cross-section of the cylindrical passageway. However, with this configuration, when the vanes are in an open position, a vee-shaped space is defined between the ends of the vanes and the water passageway. Baffles are provided to fill this space so that debris cannot collect therein.

Abstract: A moisture removal scheme for an axial flow turbine apparatus is disclosed. A substantially radial groove disposed on a rotating blade conducts moisture droplets deposited on the blade in a radial direction toward a circumferential slot disposed on the interior surface of a turbine casing. The slot is radially adjacent to the radial outermost point of the groove and collects moisture thrown thereinto from the groove to eliminate that moisture from the interior of the turbine. Axial ridges are provided on the blade to guide the moisture droplets deposited thereon into the radial groove.

Abstract: The compressor comprises an impeller and a diffuser with blades (vanes) of a constant thickness, arranged around the circumference of the impeller and diffuser. In the zone between the entrance edge of each blade (vane) and its center in a radial direction the angle between the pitch line in the longitudinal section of each blade (vane) and the tangent line to an imaginary circle drawn through any point of said pitch line from the center of the impeller axis of rotation is equal to the entrance angle of the blades (vanes). In the remaining zone of the blade (vane) this angle varies according to a quadratic parabola.Each pair of adjacent blades has blades of a different length, the exit edges of the blades being located on one imaginary circle drawn from the center of impeller axis of rotation while the entrance edges of these blades lie on two imaginary circles drawn from the same center.

Abstract: A pump of the type having a centrifugal auxiliary guide wheel with a circumferential transfer passage means about the periphery of the auxiliary centrifugal guide wheel for supplying fluid to a main propeller in a radial outward flow path substantially the entire length of the flow path.

Abstract: A sump pump comprising a sump having an inlet for the liquid to be pumped and a discharge outlet, the pump proper being received at the bottom of the sump and being driven by a vertically mounted shaft. The pump comprises two impellers each having two intakes, the impellers being mounted one above the other on the shaft and surrounded by two volutes each having one or two outlets which are connected to the inlets of a collecting manifold, the outlet of such manifold being connected to the outlet of the sump.

Abstract: A turbine having a radial inlet to the turbine wheel is provided with variable nozzle vanes to control the inlet flow to the turbine. The vanes are controlled by lever-actuated gearing to provide a positive coupling of input to the vanes.

Abstract: A centrifugal pump with its impeller arranged beside the main media current in the pump housing (Vortex impeller pump) is provided with an inner part of resilient material which part forms the inlet of the pump. When a certain maximum volume goes into the pumphousing, the inlet edges fold inwards thus diminishing the inlet area and preventing the volume current from increasing over a certain value.

Abstract: A gas turbine with a centrifugal compressor as generator for compressed air and with a withdrawal of compressed air for outside use, according to which within the region of the withdrawal area at the compressed air passage there is provided an adjustable flow divider which during the withdrawal of compressed air divides the oncoming quantity of air into a withdrawal quantity and a gas turbine quantity.

Abstract: A power generating system which includes a turbine and a radiant heat boiler for supplying motive fluid to the turbine. The turbine is provided with a stator having a cylindrical bore and a cylindrical rotor provided with a substantially uniformly rough lateral surface. The inner wall of the turbine stator is provided with a continuous oblique helical groove which serves as a passageway for the motive fluid. The lateral surface of the rotor has a relatively high drag coefficient and the rotor is actuated to a high rotational speed by the motive fluid flowing in the stator passageway and past the rotor lateral surface.

Abstract: A centrifugal pump is described having an improved and simplified construction of pump casing and impeller with easy adaptability of the components over a wide range of capacity, the pump casing preferably being of stamped sheet metal with welded inlet and outlet connections, preferably of pipe of selected sizes, the pump casing preferably being of circular, as opposed to volute, shape in transverse cross section and with an inserted cut water tongue or plate capable of ready accommodation in shape to different impellers for different selected heads or viscosities so that each size of casing can be employed over a wide range of inputs and of delivered heads or volumes.

Abstract: An extraction system for extracting steam from the blade path of an axial flow turbine apparatus in a circumferentially uniform manner. Steam is extracted through an extraction orifice having a circumferentially-varying throat portion, the throat communicating with a diffusing passage leading into a circumferentially-extending extraction manifold. The manifold is connected to an extraction pipe of predetermined cross-section area. Steam extracted from the blade path is conducted through the extraction pipe to an associated user apparatus. The dimension of the throat in the longitudinal plane relative to the axis of the shaft and the radial dimension of the manifold in a plane normal to the shaft axis are sized and cooperatively related such that steam is uniformly extracted from the blade path without creating significant pressure variations at various circumferential locations therewithin.

Abstract: Cushions made of metal wire provide passageways for cooling air and a resilient layer between metal and ceramic parts in a ceramic blade assembly for a gas turbine.

Abstract: Apparatus for varying the nozzle area in the turbine section of a gas turbine engine is disclosed. Nozzle guide vanes extend across the flow path for the working medium gases and are rotatable to alter the area of the nozzle. In one embodiment the rotatable vanes are cantilevered from the outer engine case and are opposed at their radially inner ends by a shroud which is affixed to the inner engine case. The outer engine case has a double wall type construction including a plurality of bearing cartridges disposed between the walls.

Abstract: A diffuser is disclosed which provides intersecting passages extending outwardly from an inner circumference which closely surrounds the periphery of the impeller output stage of a centrifugal compressor. The passages are of curvilinear cross-section having entrance throat regions of an eccentric configuration designed to minimize the build-up of shock waves in the fluid flowing from the outlet of an impeller whose blade tips are traveling at supersonic speed. The configuration of the throat region is such that it closely matches the velocity vector profiles of fluid particles which leave the central region of an impeller blade at supersonic velocities and an appreciable angle above the tangential whereas particles leaving near the front and back shrouds of the impeller travel slower at angles approaching the tangential.

Abstract: This invention relates to an improvement in an apparatus suited for removing liquid e.g., flammable from a bulk container comprising pumping equipment in the container, a fluid transmitting casing extending from an upper portion in the container to a lower portion and communicating with the pumping equipment, an inlet communicating with the pumping equipment, a fluid outlet at the upper part of the container communicating with the casing, a foot valve for sealing the inlet from the container when in a closed position and permitting fluid flow from the container through the inlet to said casing when in the open position, said foot valve including means responsive to lifting movement of the pumping equipment for closing said valve and a sealing gland at the top of the casing accommodating movement of the pumping equipment for permitting opening and closing of the foot valve without venting the casing.

Abstract: A diffuser for use with a centrifugal compressor utilizes a symmetric arrangement of vanes which direct the gas flow along a plurality of passageways that are substantially tangential to the outer periphery of the impeller. Each vane making up the array is pivotally mounted near its opposite ends. Controls are provided so that rotation of the vane assembly about the innermost set of pivot points will vary the cross-sectional area of the ducts formed between adjacent vane members. This allows efficiency of the diffuser-compressor combination to be maximized for a multiplicity of speed and load conditions.

Abstract: The segmented casing has a plurality of successive stage casing rings, a transfer plate intermediate each adjacent pair of casing rings, a suction end casing section, and a discharge end casing section. A shaft extends axially through the casing, and is supported and sealed at its ends by demountable bearing and seal means. Each casing ring encloses a complete stage containing an impeller which is spring biased into engagement with a locating collar secured to the shaft, and a pair of replaceable liners which are arranged at the opposite sides of each impeller. Each casing ring, impeller, set of liners, locating collar, and spring means, together comprises a module which functions as one stage of the pump. A pump is comprised of two or more modules which are connected internally by a shaft and externally by draw bolts, and which are contained by the suction and discharge end casing sections. Suction and discharge connections are demountably secured to the casing in any one of several rotative positions.

Abstract: This invention relates to a ventilating fan of the kind comprising a housing defining an air passage, and an impeller rotatable from an electric motor or other prime mover within the housing.The invention is concerned with the provision of an improved automatic shutter device which consists of shutter plates which may have their pivot axes tangential to a common circle and movable between a position which closes the air passage and a position which opens said air passage. The shutter device is operated by means responsive to rotation of the impeller shaft for moving the shutter means to the open position when the impeller is rotating and to the closed position when the impeller is not rotating. The shutter operating means may be such that substantially no thrust or load is placed upon the prime mover when it is rotating at a selected operating speed.