Abstract: Wind motors which are propelled by the impact of the wind against the vanes of an impeller wheel, that have wind channeling devices that gather the wind from a large area and funnel it at increased density and pressure to apply multiplied impact against the impeller vanes.

Abstract: A vertical axis windmill is taught having a horizontal base, preferably circular in configuration, sitting on the earth's surface, a dome having a horizontal bottom spaced above the base supported on a plurality of columns to provide an annular space below the dome bottom, a conical baffle positioned on the base below the dome, the conical axis being coincidental with the vertical axis of the dome, the dome having a circular roof orifice therein coaxial with the axis of the conical baffle, a vertical shaft supported coaxially by the conical baffle and an impeller affixed to the shaft and positioned in the dome circular orifice. Wind blowing relative to the windmill causes a lifting force by the aerodynamic effect of the dome, the wind passing upwardly through the annular opening and upwardly through the dome orifice, imparting rotational energy to the impeller. Power using apparatus such as generators or the like may be attached to the rotating vertical shaft.

Abstract: A paired vane structure for the first stator stage of a gas turbine, having the vane structure of each vane pair cast in two matching parts which are then assembled and held together by means of bolts passing through flanges on the vane inner and outer platforms. The paired vanes are assembled into the gas turbine structure in the same manner as the prior art paired vane sections.

Abstract: In this compressor stator having a housing in one piece a circumferential groove having a radially inner part of reduced width is formed for each stage in the wall of the cavity of the housing and communicates with the exterior of the housing by way of at least one radial opening having sufficient size to provide a passage for a vane base. The vane bases are disposed in a contiguous fashion in the groove and are radially supported by said inner part of the latter. A chain surrounds all the bases and bears radially against each one thereof.

Abstract: An axial flow turbine incorporating an exhaust hood for receiving exhaust steam from the turbine and directing this exhaust steam through a discharge opening in the hood in a direction essentially normal to the axis of the turbine is disclosed. The exhaust hood includes a first set of guide vanes arranged in an exhaust duct connected to the turbine adjacent the last stage buckets thereof. These vanes are curved to provide a relatively smooth transition of steam flow from an axial direction to a generally radial direction. A guide ring circumferentially surrounds the first set of guide vanes and a plurality of secondary vanes are circumferentially spaced around this guide ring. Steam which is discharged radially from the first set of vanes to the secondary vanes is directed by the secondary vanes to the discharge opening of the exhaust hood.

Abstract: A two shaft gas turbine engine is shown wherein the power turbine comprises a single stage which is closely coupled to the compressor turbine through an annular transition portion having radially diverging side walls forming an inner and outer shroud. The relatively high velocity of the working fluid is maintained through the transition portion by an array of non-rotating stationary struts. Each strut defines a camber line which at the entry of the strut is angled to receive the working fluid, having a swirl component therein, at a 0.degree. angle of incidence. Further, each strut has a configuration which, in cooperation with the increasing angle of the camber line compensates for the divergence of the shrouds to maintain the flow of the working fluid at a generally undiminished velocity therethrough.

Abstract: A method and apparatus for generating power and for pumping fluids, wherein a free vortex cavity, within a rotating rotor, is used to pressurize a fluid after which the fluid may be used as a pressurized fluid or be used to generate power. The working fluid is injected into the free vortex cavity through feed nozzles oriented to discharge the working fluid forwardly in the direction of rotation, so that the working fluid rotational speed is normally, at least in part of the cavity, greater than the rotational speed of the rotor. The working fluid is pressurized within the vortex cavity by being forced to follow a curved path. Part of the working fluid is taken near the periphery of the curved passage, and recirculated through nozzles located toward the rotor center from the periphery thus providing additional fluid flow within the free vortex cavity and improving the rotor performance.

Abstract: A fan structure which is particularly well suited for use in a high tip speed turbofan, gas turbine engine is disclosed. Various construction details accommodate both subsonic and supersonic flow across the fan blades. The system is built around compression shock wave phenomenon which are utilized to stably convert a portion of the dynamic energy of a supersonic stream to pressure energy within a subsonic stream.

Abstract: A supersonic shock wave compressor diffuser forms a concentric annulus about a radial compressor having a central axis. Circular channels diverge with an increasing divergence angle as they extend along an arcuate longitudinal center line from an inner circumference very near the periphery of the compressor to the outer circumference of the diffuser. Shock waves may occur within the channels near the inner circumference of the diffuser or may occur within a vaneless diffusion space adjacent the periphery of the compressor and provide efficient energy conversion and reduce the velocity substantially below MACH 1 to further improve the efficiency of the subsonic diffusion downstream therefrom. A logarithmic spiral is approximated by a circular arc subtended by the channel longitudinal axes to permit recovery of angular momentum while the circular cross section of the channels permits recovery of swirl velocity energy.

Abstract: The stain removal apparatus uses alternating rows of teeth between a rotor and the housing to clean paper pulp during passage of the paper pulp by the teeth. Check members are employed adjacent the teeth of the innermost row of teeth to preclude accumulations of material in front of the teeth. The check members are of the same thickness as the teeth at points adjacent the teeth while being shaped to merge into the rotor or housing at the end remote from the teeth.

Abstract: An axial-flow transsonic compressor wherein a flow path is defined by a housing of the compressor and an inlet bladed stator, at least one transsonic stage and at least one subsonic stage, arranged within the housing in succession along the path of the flow of the fluid being compressed. The transsonic stage includes a transsonic rotor and a bladed stator. The subsonic stage includes a rotor and a stator. Each blade of the inlet stator structure has an angle of setting of a profile of a peripheral section perpendicular to a blade axis determined with respect to a vector of the circumferential speed of the transsonic rotor in excess of 90.degree.; an angle of setting of a profile of a radially innermost or sleeve section perpendicular to the blade axis determined with respect to the vector of the circumferential speed of the transsonic rotor below 90.degree.

Abstract: A supporting ring for stator vanes in an axial compressor. The supporting ring permits an adjustment of the angular position of the stator vanes. The adjustment is carried out by removing the stator body while the machine is at standstill. The supporting ring is provided with recesses which are defined by an elastic wall which also defines the bores in which the stator vanes are mounted. Clamping bolts are provided in the elastic wall and by tightening these clamping bolts the stator vanes are held in a predetermined position.

Abstract: An outer ceramic shroud for a gas turbine engine includes a plurality of ceramic ring members each housing a rotating blade row of the turbine and further including ceramic stator vane stages located alternately between each of the ring members and having a radially outer rim portion thereon axially aligned with the ring members. The ring members and rims have tongue and groove means thereon for interconnection thereof into a continuous outer high temperature ceramic shroud maintained in axially assembled relationship by a pressure loaded piston member for applying a load to the shroud components during engine operation as a direct function of the discharge pressure of the engine compressor and a supplemental spring to load the shroud components when the discharge pressure drops, thereby to maintain the operative position of stator vane stages.

Abstract: A turbine or pump having a housing receiving a rotor journaled therefrom by a central shaft with the housing including a tangential inlet and a tangential outlet extending in opposed directions with the rotor including a central partition in the housing and curved blades on each side of the partition. The partition is provided with a central opening which communicates the inlet side of the partition with the outlet side thereof whereby fluid passes radially inwardly in engagement with the blades on the rotor to the radial central portion of the partition adjacent the shaft and then makes a U-turn and moves radially outwardly of the partition in relation to the blades for discharge.

Abstract: Improvement to supersonic centrifugal compressors comprising a set of radial blades fixed to a mobile circular rim chocked on the compressor shaft and extending beyond the blades by a flat ring limiting, with a fixed upper housing, a semi-fixed, semi-mobile diffuser and in which the distance separating the axis of rotation of the machine from a trailing edge of the mobile blades is greater in the vicinity of the fixed housing than in the proximity of the mobile rim; the invention enables a good distribution of the flow speed of the fluid to be obtained at the output of mobile blades in the semi-fixed semi-mobile diffuser.

Abstract: An impeller for a ring compressor is disclosed. More particularly, the impeller is designed so that the ratio of the area of the individual blades of the impeller to the cross section area of the side channel of the compressor is equal to or smaller than 0.72 and so that the ratio of the pitch or spacing between adjacent blades of the impeller to the width dimension of the side channel cross section is likewise equal to or smaller than 0.72. Design of the impeller in this manner decreases the gas volume dragged across the interrupter or break in the side channel without appreciably decreasing the discharge head.

Abstract: Methods and apparatus for controlling the radial clearance between the rotor and stator elements in the turbine section of a gas turbine engine is disclosed. A cooling air valve is operatively disposed at the upstream end of the turbine section to control the admission of cooling air to the turbine in response to engine operating temperatures. In one specific embodiment the thermal growth of the case and the stator elements supported thereby is controlled by the valve. At low power conditions the case and the supported elements grow radially with the rotor in response to increasing gas path temperatures. At elevated conditions cooling air is flowable to the case to retard the thermal growth of the case and allow the rotor to grow radially toward the stator elements.

Abstract: A speed responsive shutoff for a pneumatic tool such as a nut runner is disclosed. The shutoff, effective to terminate air supply to the air motor under load, employs a centrifugally operated air valve having a flat valve head which is biased against a valve seat through which pressurized air travels en route to the motor. A small orifice in the valve head leads to an expansible chamber behind the head. In operation of the tool, when the throttle valve is open, initial air is supplied to the motor by a slight opening of the air valve due to a higher pressure in front of the valve head than behind it. The motor quickly reaches a predetermined speed level at which time the air valve is fully opened by centrifugal weights. Under loading approaching stall, the motor slows to a speed low enough to allow the air valve to move toward closure under the influence of a spring.

Abstract: A mechanism for varying the position of a plurality of nozzle vanes in a gas turbine engine. The mechanism includes a single double-acting hydraulic actuating jack disposed between two bell cranks for simultaneously applying force to a ring gear at two diametrically opposed connection points. The single actuating jack applies equal and opposite forces to the diametrically opposed connection points on the ring gear and reduces distortion producing stresses therein. The ring gear simultaneously engages a plurality of individual gear segments rotatable with each individual nozzle vane in the engine. Movement of the single actuator jack causes balanced rotation of the ring gear and simultaneous rotation of the nozzle vanes.

Abstract: A fan with a plurality of wide curved blades that eliminate air space and overlapping between blades has improved efficiency in that each of the blades is of a curvature that deflects most, if not all, of the air hitting the blades toward, and then forward along, the longitudinal axis of the fan.