Abstract: There is disclosed a boiler system in which ash-bearing fuels are fired in horizontal suspension and in which provision is made for the removal of the ash without shutting down or reducing the output of the system. The system comprises an upper water and steam drum and at least one lower water drum. A furnace cavity is located substantially between the upper drum and the lower drum, with the cavity being defined by a pair of side walls, a front wall, a rear wall, a ceiling and a floor. Means in the form of openings in the floor of the furnace cavity are located near the rear wall of the furnace cavity for permitting ash to be removed from the boiler system without requiring the shutting down or the reduction of the output of the boiler system.

Abstract: A hurdle for malthouses or other material-handling spaces has a supporting frame and a bottom supported by the supporting frame and including a plurality of hollow sheet shaped members arranged parallel closely near one another and self-supporting, a plurality of openings provided in the hollow sheet shaped members for passage of a material to be handled, and connecting elements for connecting the hollow sheet shaped members with one another.

Abstract: A condenser receives hot compressed refrigerant from the heat pump compressor and transfers heat to water in water heater, refrigerant flows from the condenser through a pressure reducer to an evaporator coil in which baffles define first and second air flow paths across the coil parallel to the coil gradient. In one path the temperature of air flowing across the coil is reduced while the air gives up heat to the refrigerant. The other air flow path heats air passing across the coil. A multiplicity of pressure reducers are provided in the coil to progressively drop the temperature of the refrigerant from one end of the coil to the other. A supplemental coil can be used in conjunction with the second air flow path to heat air further. The supplemental coil may receive hot refrigerant directly from the condenser.

Abstract: An improvement for use in a mechanical stoker with a coal stove is disclosed. The improvement device is used with a stoker, generally including a hopper, operatively connected to a small stove having a fire box forming an ash pit. The fire box, through its sides sloping downward from the hopper, supports a ramp. The lower portion of the ramp is a perforated fire grate, while the upper portion is a plate that extends through the hopper bottom and into the stove. A fan effecting a forced draft through the grate is operatively connected to a fan motor. The improvement comprises a wiper bar which overlies generally the width of the plate. The wiper bar oscillates about the longitudinal center line of the plate to feed coal or other solid fuels from the hopper onto the grate. The oscillation of the wiper bar is effected by eccentric connection to a gear motor.

Abstract: A steam generator includes first and second mutually parallel flue gas flues; the first flue gas flue having an upper end, an intermediate ceiling at the upper end having an upper surface, a cross flue leading from the first to the second flue gas flue, and first and second vertical walls formed of pipes and disposed opposite each other as seen along the cross flue; a steam generator frame supporting the intermediate ceiling; the intermediate ceiling being formed of pipes gas-tightly welded to each other and disposed alongside each other in one layer in tube tracks extended along the cross flue; each of the pipes of the intermediate ceiling changing into a respective pipe of one of the vertical walls; and first and second vertical suspension pipes connected from a common location along a given one of the tube tracks through the upper surface of the intermediate ceiling and through the cross flue to the steam generator frame for suspending the intermediate ceiling, the first suspension pipe changing into a pip

Abstract: A system and method is disclosed for implanting a prosthesis the length of a blood vessel. A generally tubular prosthesis member having an unobstructed central passageway is provided. The member contracts to a smaller dimension for delivery through the unobstructed portion of the length of blood vessel, and is outwardly expansible in the blood vessel. The prosthesis member is positioned in a contracted condition between a delivery catheter and an outer sheath, and expands outwardly responsive to removal of the sheath.

Abstract: An improved, grid-type flow distribution baffle for both providing lateral support for an array of heat exchange tubes and for generating a sludge-sweeping water current within a steam generator is disclosed herein. Generally, the improved baffle comprises a plurality of grid members for defining an array of square, tube-capturing cells, wherein each wall of the cell is closely adjacent and contactable with the side of the tube. Each of the cells is circumscribed by a flange at one of its ends which includes a substantially circular opening for allowing the tube to extend through the cell. The flange includes four flat portions spaced 90.degree. apart for rendering the flange flush with the center portion of each of the square walls which form the cells of the baffle. These flat portions allow the flange to closely circumscribe the tube without coming into contact with it, thereby avoiding "point contact" between the flange and the tube.

Abstract: A heat generating unit for heating a liquid comprising a housing, at least one wedge, generally circularly shaped rotor, and means for rotating the rotor. The housing has a rotor cavity formed in a portion thereof with an inlet opening being formed through a portion of the housing intersecting the rotor cavity, and an outlet opening being formed in the housing intersecting the rotor cavity. Each wedge member is generally triangularly shaped in one cross section and includes a wedge base and a forward wedge wall. The rotor has an outer peripheral surface and is rotatingly disposed in the rotor cavity. The rotor has a forward face and a rearward face. Each wedge member is disposed generally between the forward face of the rotor in the forward end wall in the housing and each wedge member is positioned on the forward end wall so the wedge forward wall generally faces one direction of rotation of the rotor, the outlet in the housing is disposed generally near a central portion of the rotor.

Abstract: A magnetic scale inhibiting device is easily installed in a water heater inlet dip tube without the need of an external housing. The device comprises a number of thin magnets held in aligned relationship within the dip tube by resilient spacers which engage the magnet and the dip tube.

Abstract: A medium to high viscosity liquid flow detector and alarm sub-system for use with apparatus for automatic liquid dispensing machines for mastics, sealants, adhesives, and the like, comprising a liquid pressure sensing device disposed in the liquid flow path of the liquid dispensing gun of the machine. The liquid pressure sensing device derives an output electrical signal indicative of the instantaneous liquid pressure in the liquid flow path. A differentiating circuit differentiates the liquid pressure indicating signal to derive a rate of change in fluid pressure signal. The rate-of-change signal is supplied to an indicator for signalling the existence of an undesired rate-of-change in liquid pressure condition and is indicative of a bubble or void in the liquid mastic, sealant, or the like being dispensed.

Abstract: An automatic coal stoker is disclosed having at the base of its hopper an enclosed reciprocating pusher assembly rectangular box shaped which delivers compressingly a defined but variable quantity of coal into a restricted passageway. Successive quantities form a compressed strip of coal to be burned between side rails of an inclined fire grate situate over an air box fed with a forced air supply. As the strip works its way down the inclined grate it burns without forming clinkers and discharges ashes at the bottom of the incline.

Abstract: A model steam generator for simulating the environment inside a nuclear steam generator in order to monitor the condition of the heat exchange tubes of the nuclear steam generator is disclosed herein. The model steam generator includes an electrically-powered thermosyphon heating means for circulating a flow of vapor and condensate through the sample tube in a closed loop. The thermosyphon includes riser tubes which are concentrically disposed within the sample heat exchange tube along a substantial portion of the longitudinal axis thereof for both directing a stream of steam into the inside walls of the heat exchange tubes, and for insulating this flow of steam from the resulting stream of condensate which flows down from the inner walls of the sample tubes. The elimination of the counter-current forces between the stream of steam and the downflowing film of condensate prevents the formation of heat-obstructing ripples of condensate on the inner walls of the sample heat exchange tubes.

Abstract: A solid fuel furnace having an oscillating grate plate solid fuel burner therein wherein the grate plates are in a stepped arrangement and every other plate moves together, in an opposite direction from the adjacent plates so that the solid fuel is kept moving down the step grate positively. Additionally, the solid fuel burner is mounted in a furnace housing which is designed to utilize the hot combustion gases to preheat incoming or makeup air for a blower used for supply air flow for heating. Baffles are used to provide a substantially elongated path for the combustion gases to ensure adequate heat exchange in a compact space.

Abstract: In heating control method of a heat furnace, three non-linear models, model to calculate furnace temperature based on the fuel flow rate by unsteady heat balance system, model to estimate furnace wall temperature distribution based on the furnace temperature and model to estimate material temperature based on the furnace temperature, are used, linearization is performed by perturbation simulation to vary the flow rate stepwise and the optimization to minimize the fuel flow rate is performed and the optimum furnace temperature per each material is determined, and the mixed combustion ratio of plural fuels obtained by dividing total calorific value of each fuel by total calorific value of all fuels and the furnace temperature setting value are calculated using the optimum furnace temperature per material and then set.

Abstract: An apparatus and method for continuously treating material for performing such functions as burning, roasting, smelting, coking, melting, high temperature chemical reactions and the like in a combustion chamber wherein the chamber or an extension thereof, is tuned to permit combustion gases therein to resonate and to thereby effect maximum combustion efficiency. In particular, the invention concerns controllably varying the geometry of the combustion chamber, such as the length of a pipe or tubed section thereof in accordance with the variables of combustion occuring therein, so as to optimize efficiency of combustion and the reaction which takes place between the burning material and the material being treated or reacted on. In addition to effecting such reactions, the apparatus is also operable to effect the transfer of the heat of combustion to a heat transfer medium, such as water for generating steam or other form of heat transfer medium to maximize the utilization of the energy generated.

Abstract: A control valve, in particular, an electrohydraulic control valve for controlling the injection pump of a diesel engine, incorporates a slider which is guided in a housing, in a manner permitting movement in the axial direction, the housing possessing radial flow-ports and, in the region of the inner peripheral surface, at least one annular space carrying a fluid. In order to ensure that the control-valve housing can be manufactured economically, the annular space is formed by a plurality of flow-ports which intersect in the region of the inner peripheral surface of the housing and pierce the housing radially.

Abstract: A plant for combustion of a particulate fuel in a fluidized bed in a combustion chamber has the fuel supplied into the bottom of the combustion chamber by means of a pneumatic transportation system via nozzles. Fuel for the plurality of nozzles is transported through a duct to a distributor and from there via individual conduits to the nozzles of the combustion chamber. These conduits include flow-inhibiting, pressure-drop generating means, by means of which a pressure drop is generated between the distributor and the combustion chamber. These pressure-drop inducing means influence the velocity of flow and hence the transport capacity of the transport gas so that a desired, normally uniform, distribution of fuel to the bed is secured.

Abstract: An apparatus for regulating and cleaning air passages (4) provided in the side-wall of a furnace, such as a soda recovery boiler, and connected to an air box positioned outside the wall, comprising a sleeve member reciprocatably mounted in the air box and insertable into the air passage. The rear opening of the sleeve member connects to and is supported by a hollow section of an elongate holder which is slidably mounted in the longitudinal direction thereof and extends through the wall of the air box, and which holder is operatively connected to a driving device. The hollow section of the holder comprises at least one air inlet.

Abstract: This invention relates to an implantable, multiple envelope tissue expander and to a method of using the same to produce a flap or section of tissue having a preselected shaped for use in plastic surgical procedures. The device consists essentially of at least two separately inflatable envelopes wherein one is used as a base and is fixed to body members underlying the tissue to be expanded. The other envelope is smaller in volume than the first and is attached to the upper half of the base envelope to expand the tissue overlying the second envelope to a greater extent than is accomplished by the first envelope to thereby produce a section of tissue with a preselected shape.

Abstract: A reduced wreath condensation boiler. A feed duct for fresh oxygen-carrying air taken from the atmosphere and an exhaust duct for exhausting diluted combustion products to the atmosphere downstream from the extractor fan are essentially parallel, but not coaxial, minimizing heat exchange. A first heat exchanger is disposed above the heating body for providing heat exchange between the fresh air from the feed duct and the combustion products from the heating body prior to dilution. Deflectors channel a portion of the air from said first heat exchanger to sweep the free space situated between the heating body and its airtight enclosure, while the remainder of the air from the first heat exchanger is directed towards the burner. At least one calibrated orifice injects the air which has swept over the heating body into the exhaust duct for the combustion products upstream from the extractor fan. This boiler reduces the wreath of water vapor where the flue gases are exhausted to the atmosphere.