Abstract: An apparatus for removing bottom dross from molten zinc contained in a coating pot includes a pump, a traversing carriage for positioning the inlet of the pump in a desired horizontal location and a slide mechanism for positioning the inlet of the pump in a desired vertical location. The pump is moved in horizontal and vertical direction to remove the accumulated bottom dross. The bottom dross contained in molten zinc is pumped into a V-shaped channel and allowed to flow into either a removable basket or into a pre-melt pot. The pump of the present invention is a pedestal, centrifugal graphite pump powered by an air motor. The pump has a housing enclosing an impeller. The distance between the impeller and the inner wall of the housing is sufficiently large to avoid plugging by the bottom dross but sufficiently small to permit pumping.

Abstract: The present invention pertains to a holding device (4) for holding an electric fan (1), in particular, a minifan, on a mounting wall (2). The invention is characterized by at least one essentially flat holding part (10), one side of which defines a fan contact plane (12), wherein said holding part comprises at least one plug element (14) that projects from the holding part (10) approximately perpendicular to the contact plane (12) and can be positively and/or nonpositively inserted into a mounting hole (16) of the fan (1) as well as at least one pin-like fastening element (22) that projects from the holding part (10) approximately perpendicular to the plug element (14) and can be inserted into a hole (20) in the mounting wall (2).

Abstract: The object of the invention is to increase the efficiency of a low-pressure steam turbine connected to a condenser and to reduce its cost of manufacture.According to the invention this is achieved when the dividing plane (8) of the top and bottom part (6, 7) of the outer casing (1) of the low-pressure steam turbine lies at the level of the axis (9) of the turbine rotor (4) and the concrete foundation (14) reaches up to the dividing plane (8). Both the bottom part (7) of the outer casing (1) and the bearing points (10) of the turbine rotor (4) are secured in the concrete foundation (14). The outer casing (1) is designed to be open at least on one side at right angles to and horizontally to the axis (9) of the turbine rotor (4). A condenser (16) is attached to each lateral opening (17) in the outer casing (1).

Abstract: An outside air conditioner unit includes a heat exchanger for conducting refrigerant, and a fan for circulating outside air across the heat exchanger. The fan is disposed coaxially within a hollow cylinder which can be adjusted axially relative to the fan by a motor to vary the intensity of the air flow. The fan motor is connected to a controller which actuates the motor in response to a difference between outside air temperature and a reference temperature to reduce the air flow intensity when the heat exchanger is in an overload condition.

Abstract: A pump housing assembly having two parts, each part including an outer casing and an inner lining of elastomeric material. An insert component comprising a body, including a lining section, is sandwiched between the housing parts and cooperates with the inner lining of the two housing parts to form a pump chamber. The insert component further includes a drainage hole extending through the lining section of the component for permitting drainage of fluid from the pump chamber.

Abstract: A first adjustment arrangement facilitates adjustment of a plenum in a first direction of movement relative to a fan axis and a second adjustment arrangement facilitates adjustment of a shroud in a second direction of movement transverse the first direction of movement. A plurality of fasteners secures the adjusted plenum to the radiator and a plurality of fasteners secures the adjusted shroud to the plenum. A pilot arrangement supports and guides the shroud on the plenum during adjustment and maintains the shroud in position during fastening of the shroud to the plenum.

Abstract: An hydroelectric power plant is disclosed which comprises several combination turbine/generators which are suspended into an ocean current from a submerged tension leg type platform. Each of the turbine/generators are independently positionable horizontally, vertically and azimuthally to take the best advantage of the ocean current at any given time for generating electricity.

Abstract: An apparatus is provided for controlling rotating blade tip clearance in a turbo-machine utilizing conical tipped blades. The apparatus comprises an approximately conical blade ring mounted for axially sliding displacement in the turbo-machine cylinder. The conical blade ring encircles the tips of the rotating blades and forms a blade tip clearance therebetween. The tip clearance is controlled during operation of the turbo-machine by axially displacing the conical blade ring. Piston cylinders, actuated by pressurized fluid extracted from the turbo-machine, are used to displace the blade ring. Springs, adapted to bias the blade ring into a position of increased tip clearance, oppose the piston cylinder so that failure of the piston cylinder will not result in a loss of tip clearance.

Abstract: A detachable apparatus is provided which facilitates rotation and handling of an alignment dowel during its installation into a steam turbine cylinder. The apparatus consists of a body having a threaded portion and a handle. The threaded portion allows the apparatus to be attached to the dowel prior to assembly. An elongated nut is threaded onto the body of the apparatus and, after being tightened down against the dowel, locks the apparatus onto the dowel. The dowel can be rotated in the cylinder by applying torque to the handle of the apparatus or by engaging a wrench onto the elongated nut.

Abstract: A system for stabilizing the flow of fluid in a variable capacity compressor having a diffuser, the capacity of which can be varied by changing the relative position of fixed diffuser surface and a movable diffuser surface. The system includes an annular push ring connected to the movable diffuser surface by a plurality of pins. The annular push ring is axially displaceable and rotatably fixed. Axial displacement of the annular push ring axially displaces the movable diffuser surface. The system also includes a drive ring mounted on a nozzle base plate for driving the annular push ring. The drive ring is axially displaceable and rotatable. Rotation of the drive ring axially displaces the drive ring, the push ring, and the movable diffuser surface.

Abstract: A mechanical clearance control apparatus is operable for controlling the clearance between the rotor blade tips and the casing shroud of a gas turbine engine. The apparatus includes a shroud segment which defines a circumferential portion of the casing shroud and is disposed in an opening defined by a mounting section of the stationary casing, a channel defined between radially spaced portions of the shroud segment and the stationary casing mounting section, and a wave spring disposed in the channel and preloaded against the shroud segment and mounting section for biasing the shroud segment to move radially inward toward the rotor. Flanges on opposite sides of the shroud segment and on the stationary casing mounting section at opposite sides of the opening cooperate to define inner and outer limits of radial movement of the shroud segment as the shroud segment is moved toward and away from the rotor.

Abstract: A steam turbine control valve actuator for lever-operated control valves includes a servomechanical actuator with a reciprocable rod. Such servomechanical actuator is mounted upon a support assembly that is, in turn, pivotably mounted to the control valve body. A distal end of the rod is coupled by a knuckle joint to one end of the lever which operates the control valve, and forces of the rod are biased by a spring that substantially eliminates side forces on the rod through maintenance of the effort that is applied to the lever by the rod in a direction that is parallel to the rod.

Abstract: A compressor assembly (12,13) for a gas turbine engine (10) comprises a centrifugal compressor (12) having a variable cross-sectional area diffuser (13) located at its downstream end. When the cross-sectional area of the diffuser (13) is less than a maximum value, some of the air exhausted from the downstream end (24) of the compressor (12) is directed to the upstream end (23) thereof. Sufficient air is so directed as to ensure that the mean air velocity at the outlet (30) of the diffuser (13) remains substantially constant.

Abstract: A clearance control apparatus has a pair of positioning mechanisms for quickly controlling the clearance between rotor blade tips and a shroud segment of a gas turbine engine casing. The positioning mechanisms are supported by axially-spaced casing bosses, coupled to the shroud segment via a shroud holder, and actuatable for moving radially between inner and outer stops. As the positioning mechanisms are moved between the inner and outer stops, the shroud segment is moved therewith toward and away from the rotor axis to respective inner and outer positions relative to the rotor at which corresponding desired minimum and maximum clearances are established between the shroud segment and rotor blade tips. A fluid cylinder on the casing has a piston coupled to the positioning mechanisms by a link.

Abstract: A clearance control apparatus has a positioning mechanism for controlling clearance between rotor blade tips and a shroud segment of a gas turbine engine casing. The positioning mechanism is supported by the casing, coupled to the shroud segment, and actuatable for moving the shroud segment toward and away from the rotor blade tips to reach a position at which a desired clearance is established. The mechanism includes a shaft and a bellcrank actuating assembly. The shaft is mounted through a passage defined by a mounting structure on the casing for radial movement along a longitudinal axis of the shaft toward and away from the rotor axis and is coupled at its inner end to the shroud segment. The bellcrank actuating assembly is coupled to an outer end of the shaft and mounted to the casing adjacent the shaft for pivotal movement about an axis spaced from and extending transverse to the longitudinal axis of the shaft.

Abstract: In order to compensate for the axial displacements of the rotors of steam turbines occurring in operation by simultaneous displacement of the inner casing (11, 12) and, by this means, to keep the axial clearance between the stator and rotor blading rows constant, the inner casing (11, 12) of a double-casing turbine is supported in its outer casing (9, 10) so that it can be displaced relative to it. Lever pairs (18, 19), each having a two-arm displacement lever (20, 27), which is supported on bearing blocks (21, 28) fixed relative to the outer casing, and an expansion lever (22, 29) interacting with it are used for the displacement. An extension (.DELTA.l), occurring due to the operational heating in a section of length (1) of the inner casing (11, 12), between two bearing trunnions (23, 26) is transmitted by the expansion levers (22, 29) to the displacement lever (20, 27), whose pivoting about the bearing trunnion (26) in the clockwise direction achieves the necessary displacement (.DELTA.x, .DELTA.x2).

Abstract: An axial flow steam turbine has a self-locking nozzle block wherein the nozzle block has radially inwardly and outwardly extending flanges that seat in grooves formed in spaced shrouds of the nozzle ring, with locking pins provided, in bores in a rear arcuate section of the nozzle ring, formed from the material that has a thermal coefficient of expansion greater than the thermal coefficient of expansion of the material from which the nozzle ring is formed. Preferably, the nozzle block is formed from a material having a thermal coefficient of expansion comparable to that of the pins. Steam passing through the turbine heats its assembly such that the locking pins force the flanges of the nozzle block into sealing contact with a first arcuate section of the nozzle ring so as to prevent vibration and loosening of the nozzle block in the nozzle ring.

Abstract: A clearnace control apparatus has a plurality of positioning mechanisms and an annular unison ring for controlling the clearance between the rotor blade tips and shroud segments of a gas turbine engine casing. The positioning mechanisms are supported by circumferentially-spaced casing bosses, connected to the shroud, and actuatable by the unison ring for moving radially toward and away from the rotor blade tips. As the positioning mechanisms are moved radially, the shroud segments move therewith toward and away from the rotor axis to positioned between inner and outer positions which define minimum and maximum clearances between the shroud segments and rotor blade tips. The unison ring has circumferentially spaced slots defined therethrough each extending in a transverse inclined relation to the respective directions of movement of the unison ring and positioning mechanisms and having spaced opposite ends defining first and second angularly displaced limit positions of the unison ring.

Abstract: In a steam turbine having a first turbine element adapted to receive a flow of steam for operating at a first predetermined pressure, the first turbine element including an exhaust protion, a second turbine element adapted to receive the flow of steam for operating at a second predetermined pressure that is relatively lower than the first predetermined pressure, the second turbine element including an inlet portion, a method and apparatus for connecting the inlet portion to the exhaust portion by crossover piping which includes a pair of vaneless turning subsections each of which have a substantially long radius of curvature.

Abstract: A blower for conveying material includes a housing and a spout. The housing has a front wall, a rear wall and an arcuate side wall extending between the front and rear walls. A plurality of arms with paddles mounted thereon are rotatable within the housing to discharge material through the spout. Springs are provided to urge a portion of the housing side wall into a normal position while permitting this side wall portion to be flexed outwardly if a foreign object such as a rock impacts against the inside of the housing side wall with enough force to overcome the springs. Permanent deformation to the housing is thus prevented by the springs.

Abstract: A convertible air cleaner comprising an elongated enclosure forming an internal cavity. A first opening is at one end of the enclosure and a second opening is at an opposed end of the enclosure and with the openings oriented substantially at 180.degree. from each other. A support structure holds the elongated enclosure at a substantially center axis between said first and second openings. A pivot permits rotation about said center axis between said first and second openings through an arc of at least 180.degree.. An air filter is contained within the enclosure and a fan is positioned within the enclosure for drawing air through said first opening through the internal cavity for filtration by the air filter for exiting to the exterior of the enclosure through the second opening.

Abstract: An automatic dishwasher includes a cabinet enclosing an interior washing chamber with a pump mounted in the cabinet for pumping liquids into and out of the washing chamber. The pump includes a housing having spaced apart walls and a rotatable motor shaft extending into the housing from a first one of the walls. A rotatable impeller is mounted for longitudinal movement along the motor shaft and is keyed to rotate with the motor shaft between the spaced apart walls of the housing. A removable bearing mount that supports a thrust bearing is threaded into the pump housing and, with the thrust bearing, provides an axial stop for limiting the movement of the impeller along the motor shaft. The bearing mount also includes an annular surface disposed near the exposed edges of the blades of the impeller and spaced therefrom by a predetermined, desired clearance or gap. The optimization of the clearance maximizes the efficiency of the pump.

Abstract: A wicket gate mounting for the individual wicket gates of a water turbine includes a respective bottom stem for the wicket gate. The mounting includes a conically tapered inner bore of an outer bushing and a cooperating, complementary, conically tapered outer surface of an inner bushing. The inner bushing is longitudinally slit. The inner bushing is connected to a ring disposed at one end which has an axial surface facing toward an axial surface on the end of the outer bushing. Between the axially facing surfaces at the ends of the inner and outer bushings is disposed an axially adjustable alignment ring for adjusting the axial positions of the inner and outer bushings with respect to each other which adjusts the bearing play between a layer of slide bearing material inside the inner bushing and the wicket gate stem. The axial thickness of the alignment ring is adjusted, e.g. by being reduced in thickness so that the inner bushing is pressed further into the stationary outer bushing.

Abstract: An oscillating electric fan having a neck joint which is mounted for tilting movement back and forth on the top of an upwardly projecting portion of a base and a fan unit mounted on top of the neck joint for oscillating movement on the neck joint about a vertical axis includes a flexible clip element which serves to selectively limit the extend of the tilting movement of the neck joint. The clip element, which is attached to the bottom of the neck joint has a hooked shaped tip which will strike the front wall of the upwardly projecting portion of the base when the neck joint is tilted down about 20 degrees from the horizontal axis and as a result prevents further downward tilting movement. However, by manually flexing the clip element upward away from the front wall the neck joint can be tilted further downward so as to place the fan in a collapsed or folded position.

Abstract: A belt-driven fan characterized by its concise axial relationship of components. A shroud includes a planar apron and a tubular throat intersecting the apron. Linear support members attached to the apron support an electric motor and blade assembly bearing structure. The motor is mounted upon a bracket attached to the support members for selective assembly thereon between operating and shipping positions and with the bracket in the shipping position the electric motor is primarily located within the shroud throat.

Abstract: A portable engine-blower supporting device in which a handle suspending a fan case provided with an engine is always maintained in a horizontal state through adjusting holes.

Abstract: A forage blower having an upwardly extending, tangential blower outlet transition member which is hinged along one of its sides so as to be swung laterally to thereby expose the inside of the blower housing. By swinging the outlet member laterally, only a very small clearance is required between the upper end of the outlet member and the lower end of the conveying pipe which conveys the material to the top of the silo. The upper end of the outlet member has an upwardly extending lip which facilitates the connection between the upper end of the outlet member and the lower end of the conveying pipe. The hinge arrangement between the transition member and the blower housing is such that the hinge is mounted on and supported by the rim sheet bracket.

Abstract: A turbine engine is constructed to passively modulate the flow of cooling air into the shroud. Sealing rings are disposed relative to the cooling air inlets in the shroud such that pressure and temperature variations in the engine will cause the cooling air inlets to be either fully opened, completely blocked by the sealing ring, or modulating therebetween in accordance with the cooling needs of the shroud.

Abstract: The invention relates to a turbo-machine incorporating a compressor with stator vanes of which the angle of incidence is adjustable. In order to enable adjustment in the position of the internal ring of a stator of the compressor, each of the sectors of the ring is provided with adjustment locations constituted by the bushes of pivot bearings for the roots of the vanes which roots comprise an external screw thread cooperating with a complementary internal screw thread of their seating and these come into abutment against a shoulder of the pivot of each vane so that the radial position of each of the sectors can be adjusted by rotation of the bushes in their respective seating.

Abstract: A clamping assembly for adjusting the relative spacing between the finger nozzles and the blades of a turbine wheel in turbine assembly which also enhances the distribution of high pressure steam loads between the steam chest and turbine casings of the assembly. The clamping assembly includes a plurality of adjustable clamps secured about the periphery of the casings. Each of the clamps includes a first wedge key on the periphery of the turbine casing, and a second wedge key secured to the steam chest casing by an adjustable fastener. This arrangement enables a workman to adjust the relative positions of the casings to position the finger nozzles relative to the blades by adjusting the fasteners securing the second keys to the steam chest casing.

Abstract: A device for adjusting the turbine inlet flow cross-section of an exhaust gas turbocharger, wherein an adjustment element is suspended in two annular linkage levers which are located concentric to the turbine axis. The lever arm (R.sub.1) of the first annular linkage lever nearer to the turbine is longer than that (R.sub.2) of the second annular linkage lever. This produces a trapezoidal four bar linkage located in a plane including the turbine axis. The lengths of the lever arms (R.sub.1, R.sub.2), the distance between them (C) and the distance (D) between the first annular linkage lever and the point to be sealed of the adjustment element are so matched that a minimum deviation of the path of the adjustment element from translatory straight line movement of the latter is attained. The annular linkage levers and the adjustment element are preferably located in the pressure space of a pressure casing (5).

Abstract: A solid material pump or conveyance apparatus and method including a pump housing an inlet and an outlet with a passageway between them. The passageway is formed and defined by a friction drive wall which is movable relative the pump housing towards the outlet and a wall stationary relative the pump housing. The friction drive wall has a greater surface area for contacting the solid material than the stationary wall. The friction drive wall exerts frictional forces upon the solids material introduced through the housing inlet which exceed the frictional drag exerted upon the material by the stationary wall, so that the net frictional force drives the material in a forward direction toward the housing outlet. The solid material is compacted or compressed prior to or upon entry into the pumping apparatus to a sufficient level so that the solid material exhibits some of the properties of a liquid.

Abstract: A fan assembly has a main body support and a mounting member which are inclined at a predetermined angle thus permitting the fan assembly to be mounted either adjacent to the upper edge of a wall or in a corner of a ceiling. A rotating grill disperses a current of air over a relatively wide area. The main body support has a groove which accommodates a mating engageable member of the mounting member thus permitting the fan assembly to be securely mounted to a wall or a ceiling.

Abstract: A rotary lawn mower pump including a rotary blade lawn mower with an upper housing having wheels connected thereto, an above housing motor with a drive shaft through the housing having a rotary blade connection portion beneath the housing, an impeller pump and a pump support fixedly connected to the impeller pump and adjustably connected to the housing. The impeller pump includes an impeller connected to the rotary blade connection portion of the drive shaft for rotation, a pump cover including a lower intake opening and a peripheral discharge positionable to discharge water out through the side of the housing of the lawn mower.

Abstract: An exhaust pipe (A) of a turbine has a housing (1). The walls of the housing (1) define a flow duct (2) accommodating therein a baffle (5) whose housing baffle (5) has a side surface (6) which is the surface of a body of revolution about an axis coinciding with the axis (7) of the turbine. The surface (6) has an inlet portion (8) having to a radius shorter than the outer radius R of the blades (3) of the runner (4) of the turbine.Mounted within the flow duct (2) are guides (10) supporting the baffle (5) which is adjustable along the guides (10) relative to the housing (1) of the exhaust pipe (A) axially and/or transversely of the axis (7) of the turbine.

Abstract: A turbine shroud assembly is provided for use in conjunction with a turbine engine having a turbine rotor consisting of a disc and plurality of blades attached to and extending radially outwardly from the disc wherein the outer tips of the blades are axially tapered at a predetermined angle. The shroud assembly comprises an annular shroud positioned around the turbine blades and tapered axially at the predetermined angle such that the shroud is evenly spaced radially outwardly from the turbine blades. A plurality of circumferentially spaced bell crank assemblies attach the shroud to a turbine support housing and, in response to thermal expansion of the shroud, axially shift the shroud in a direction to decrease the clearance between the shroud and the turbine blade tips.

Abstract: A ventilation fan which is adapted to be ceiling mounted such as in an attic space above a room ceiling. The fan is arranged to pass upwardly through the space between the ceiling joists in a compact arrangement and to be extended once it is disposed above the room ceiling to define an operating configuration. In the operating configuration, the air moving apparatus is swung outwardly from the housing of the fan on a pivotally mounted wall portion thereof. The fan redirects the upwardly flowing air from the subjacent room at a substantial angle to the vertical in the attic space for improved ventilation functioning.

Abstract: Method and apparatus for improving building heating and cooling, wherein relatively cooler air is circulated upwardly from adjacent the floor of a room or other space. The upwardly projected relatively cooler air displaces relatively warmer air from the upper part of the room or space, and the warmer air is displaced to a lower level, thereby tending to equalize the air temperatures at different levels of the room or space. The apparatus used for air circulation is adapted for use also in periods when cooling is required, as in summer, in a disposition to propel air horizontally. The apparatus structure includes adjustable legs permitting use of the fan or blower in dual positions.

Abstract: The disclosure is concerned with an axial fan having a casing. Unacceptably high level of noise and low discharge pressure inherent in axial fans are attributable to a counter flow of fluid taking place through the gap between the radially outer ends of the rotating blades and the casing. The invention is directed to preventing the counter flow by providing guide vanes disposed in the gap and inclined symmetrically with the rotating blade, thereby to provide enhanced output flow rate and discharge pressure, as well as to reduce the level of noise. The invention is applicable also to such axial fan as having a baffle plate on the suction side of the rotating blade in the proximity thereof.

Abstract: A method of installing into a machinery hall a gas turbine unit comprising a gas generator unit and a power turbine unit and forming a portion of a large capacity, gas-turbine powered electrical generating apparatus. The method is particularly intended for electric generating equipment having a capacity of at least 60 megawatts. To install the gas generator of such a unit in the hall and to couple it to the already-installed power turbine unit, the gas generator is moved horizontally into the machinery hall on roller devices.

Abstract: Reversal means for a transverse or cross flow blower is provided which allows for reversal of fluid flow direction without changing impeller rotation direction. In the first embodiment, power means rotate the housing 180.degree. from its initial position, thereby providing for reversal of the fluid flow. In the second embodiment, fluid flow reversal is provided by a pair of inlet and outlet volute walls made up of curved vanes. The vanes are generally elongated and pivotally mounted for rotation about their longitudinal axis by means of linkages connected to a power means. By opening the vanes of one volute wall while closing the vanes of the other, air flow reversal is conveniently accomplished.

Abstract: The control valve uses a rotor assembly to control the flow through the valve. The rotor assembly is rotatably mounted within the valve housing and cooperative with a scroll-shaped means in the flow passage which directs the flow of fluid circumferentially around and then through the bladed portion of the rotor assembly. The rotor assembly converts the motion of the fluid therethrough into rotational movement, thereby creating a predictable pressure drop. Means are provided for varying the pressure drop, namely, by axially positioning the rotor assembly relative to the opening formed by the valve seat.

Abstract: A portable whirlpool or hydrotherapy bath assembly of the type which mounts on the upper edge of the wall of a bath tub. The assembly includes a motor housing, a spaced generally upright pump housing, and an overhead support which is secured to the upper ends of both housings. The pump drive shaft is mounted in an upright position in the pump housing. Means are provided for rotatably mounting the pump housing to the overhead support for rotation about the axis of the drive shaft. A pump impeller is mounted on the lower end of the drive shaft in a pump chamber which is unitary with the pump housing. A water inlet is positioned at the lower central portion thereof. A water volume control is provided for adjusting the volume of water passing through the water inlet.

Abstract: A fluid-flow machine such as a steam turbine including an inner shell surrounding the rotor component of the machine and which is secured to the foundation, and an outer shell surrounding the inner shell and which is composed of three principal components, these being a support frame secured to the foundation, an exhaust duct for the steam or other motive fluid depending from the frame and leading to the condenser, and an exhaust cover above the frame. The inner shell is divided along a horizontal plane passing through the rotor axis into upper and lower hemi-cylinder halves. Each end of the frame includes a lower fixed part incorporating the lower half of the pass-through structure for the rotor shaft and a removable upper part in the form of a yoke beam incorporating the upper half of the shaft pass-through structure.

Abstract: A carrying structure has a wall which defines a duct. A central structure comprising an axial-flow turbine and a generator is disposed in said duct. At least two radial arms, which are substantially horizontal, are rigidly fixed to said wall and hinged to said central structure.