Abstract: The invention comprises a device for attracting and collecting flying insects. The device has an elongated clear plastic sleeve with a plurality of spaced passageways into the sleeve circumferentially around the sleeve to allow flying insects to travel therethrough into the interior of the sleeve. A fluorescent light is mounted centrally within the sleeve which can be illuminated to attract the flying insects toward the sleeve with the passageways in the sleeve allowing them to enter into the sleeve. A cone is mounted at the bottom of the sleeve having an enlarged upper end and a reduced lower end with downward converging tapered sides.

Abstract: A vermin barrier comprises a vertically extending support member having a substantially planar exterior surface adapted for receipt adjacent a parallel surface. A shield member extends from the planar member such that the shield member and the planar member together define an interior region. A pesticide is disposed within said interior region such that a route of travel barrier and vapor head are created for deterring vermin from entering the interior region.

Abstract: A seed delivery device comprises a flat, flexible seed of bio-degradable material, a plurality of apertures formed through said sheet to present a waffle-like configuration to allow passage of water and sun therethrough, and a plurality of seeds bonded to one side of said sheet between said apertures, wherein said sheet may be positioned adjacent the earth to cause growth of the seed through the sheet. The seed delivery device is formed of paper-mache, wherein said apertures are rectangular, symmetrically positioned relative to one another, and tapered. The seed delivery device also comprises nutrients impregnated into said sheet.

Abstract: A bonsai training planter structured in the form of a screen walled plant container covered with a sheet material having a preselected opacity. It is preferred that the corners thereof be provided with structural members to which screening is attached. The mesh size of the screening is small enough to hold soil placed within the planter, but large enough to permit roots to grow therethrough. The sheet material is placed over the screening in order to provide a low light environment at and near the screening which is conducive to auxin production. In operation, a seed or seedling is placed in the soil of the bonsai training planter. As dominant roots grow, they reach the screening and then commence to emerge therefrom into air. The portions of the dominant root emerging from the screening dry-out and die. The death of the emergent portion of the dominant root send auxins up the root, thereby inducing feeder root growth along the dominant root.

Abstract: A molded plastic seedling tray with an array of depressions thereon, with holes in the bottom of the depressions, each depression comprising a germination cell for growing plants. A perimeter side wall around the edge of the tray holds the germination cells up from the supporting surface so as to insure an air circulation chamber under the cells. Indexing holes are formed in the perimeter at intervals equal to the space between cells so that a planting machine can engage the holes and index the cells by one hole at a time, and thus one cell at a time. The indexing holes also provide root drying ventilation to enable self pruning.

Abstract: A door control system for dishwashers having doors mounted for pivotal movement between a vertical closed position and a horizontal open position. Pivot brackets are provided on each side of the door to support the door for such pivotal movement. A counterbalancing spring is connected to the bracket to produce a resilient force urging the door toward the closed position. A damper is also connected to the bracket to control the rate of movement of the door so that the door slowly and gently approaches the open position. The system functions effectively without adjustment of the spring even when the weight of the door is changed by the addition of decorative panels to the outside of the door.

Abstract: A construction kit for horizontally and vertically sliding window assemblies in which each window includes a sash. A meeting rail is connected to each sash and includes a slot at each of the inner and outer surfaces of the meeting rail. Weather stripping is fitted into the slot at outer surface of the meeting rail and is wrapped around the end of the meeting rail and secured within the slot at the inner surface of the meeting rail.

Abstract: A device for facilitating the grinding of the working rolls of a planetary rolling mill in which working rolls are mounted together with intermediate rolls in cages which rotate about a support body, a rolling mill having an upper planet roll and a lower planet roll. In order to provide a low cost and economically operating roll grinding device, allowing simple, fast and precise grinding of the working rolls with reduced mill down time, a planet roll (1) is associated with a manipulating device (2) which is moveable in at least three planes or axes of movement and with which the working rolls (3) can be removed individually from the planet roll (1) and fed to a grinding device (5) as well as returned into the planet roll (1).

Abstract: A device for sharpening band saw blades while the blade is in place. A grinding disc is propelled toward and away from the saw blade to grind the teeth. While the disc is being retracted, the band is moved one tooth spacing and held there by an indexing device so that the next tooth is in position to be ground. Adjustments are provided to accommodate different spacing of the teeth in different bands. The power unit for the grinder may be a common drill motor.

Abstract: The present invention provides a blade sharpening system in which a cylindrical drum abrasive is fitted snugly about a rotatable drum. The blade is run across a guide plate which is maintained at a proper orientation with respect to the drum as the edge of the blade is sharpened on the abrasive. The drum abrasive is maintained at a constant radius, thereby assuring that the contact surface between the blade and the abrasive surface is substantially constant, even after a substantial number of blades are sharpened. Further, an adjustable blade tensioner assembly is provided for substantially continuously maintaining a proper amount of pressure between the blade and the abrasive surface, reducing blade chatter, allowing a rapid but accurately repeatable sharpening process.

Abstract: A system and method for polishing the edges of a plurality of semiconductor wafers rotates a stack of wafers against a polish one or more pads such that both the wafer edges and the sides of the edges are polished to a mirror finish. The polish pad has a series of grooves through which the wafer edges are passed to polish the sides of the wafer edges, or two pads are used, one with grooves and one without grooves.

Abstract: A machine for simultaneously finishing two sides of a workpiece simultaneously, the machine having a base, an upper polishing plate, a lower polishing plate, a carrier holding one or more workpieces between the upper and lower polishing plates, a motor attached to a spindle having a first axis, which is fixedly attached to a spindle cam having a second axis such that when the spindle rotates about the first axis, the second axis of the spindle cam moves in a circular non-rotational manner circumscribing a circle having a radius defining a critical radius. The movement of the circular spindle cam causes the lower polishing plate to move in a circular non-rotational manner. The lower polishing plate is connected to one or more eccentric cams by one or more lower polishing plate linkages. The circular non-rotational movement of the lower polishing plate is transferred to the upper polishing plate by one or more eccentric cams via lower polishing plate linkages, and one or more upper polishing plate linkages.

Abstract: A rough grinding wheel has a plurality of annular grooves with widths at the surfaces of the grooves that are less than the widths thereof at the bottoms of the grooves. This feature provides a space for fluid during the grinding process. A finishing wheel may be mounted on a common shaft with the rough grinding wheel. The rough grinding wheel is intended for use in a method for grinding the outer contour of a cam wherein the cam is rough-ground with the roughing wheel; after a first radial infeed, the rough grinding wheel is withdrawn and axially displaced for a second infeed; this process is repeated until the cam is rough-ground.

Abstract: In order to be able to sand the surface of an item (3) uniformly smooth, a sanding machine is used with sanding tools in the form of sanding rollers (29) which are rotated as well as turned in the same plane, and which at the same time herewith are also moved in a reciprocating manner transversely to and parallel with the direction in which the item is conveyed, whereby during the working stroke the sanding elements on the sanding rollers (29) will sand at all possible contact angles in relation to the item (3). The risk of sanding damage such as marks and grooves as a result of over-sanding, or the possible lack of sanding as a result of too sporadic contact, is herewith reduced, and the best possible result is achieved.Furthermore, the wear on the sanding rollers (29) is completely uniform, whereby their endurance is extended.

Abstract: The flush-fit mounting of an accessory such as a sink or bowl in a surface of hard material such as granite or marble can be achieved by a method comprising the steps of:forming an opening in the mounting surface for seating the accessory within the perimeter of the edges of the opening;supporting, in proximity to the opening, a guide means having the contour of a mounting edge of the accessory,cutting, using cutting, means movable in relation to the guide means, the edges of the opening to provide a bevelled edge suitable for mounting the accessory edge in flush-fit fashion; andadjusting the cutting means in relation to the guide means as necessary, during the cutting step, so as to maintain the cutting means sharp while maintaining uniformity for the bevelled edge over the perimeter of the opening.

Abstract: Apparatus (10) is provided for cleaning of dirty, clogged sandpaper, particularly large, industrial size sandpaper belts (190) used in furniture making operations. The apparatus (10) includes a drum (58) adapted to support a belt (190), together with blasting means (16) adjacent the drum (58) for creating a stream of particulates directed toward a portion of the belt (190) for cleaning purposes. Positioning means (18) is also provided for selectively changing the relative orientation of the blasting means (16) and the belt (190) in order successively clean different portions of the belt (190). Preferably, a laterally reciprocal nozzle (108) is employed for creating the particulate stream, and the belt (190) is intermittently shifted via a pneumatic mechanism (158) to present successive portions of the belt (190) for cleaning thereof.

Abstract: A gutter bracket assembly includes a fascia bracket and a gutter bracket for rotating a gutter to effect cleaning debris therefrom. The fascia bracket including a rear panel adapted to be affixed vertically to a fascia board, a bottom panel extending from the rear panel, and a receiving portion located at an end of the bottom panel remote from the rear panel and including a first pivot member. The gutter bracket includes a frame member having a second pivot member. There is also provided a mechanism for attaching the first pivot member to the second pivot member for permitting rotation of the gutter bracket about the receiving portion of the fascia bracket so that the gutter bracket may be rotated between a first, rain-gathering position and a second, inverted position for emptying water and/or debris from the gutter. The gutter bracket includes a mechanism for securing the gutter to the frame member solely by a snap-fit of a portion of the frame about a portion of the gutter.

Abstract: The present invention entails an attic stair insulating cover made of a strong, lightweight insulating material such as polyurethane having a first insulating section and a second insulating section that are attachable to form a main insulating section. The insulating cover includes hinge assemblies that mount the insulating cover at the attic stair opening for positioning the attic stair insulating cover between an open and closed position. Each hinge assembly includes a partially hollow hinge arm that is molded onto the insulating cover. A removable axis pin connects the hinge arm to a block mounted adjacent to the attic opening. The hinge assembly axis is horizontally spaced from the main insulating cover and is also vertically spaced above the attic floor. A gasket recess extends along a bottom edge of the insulating cover with a gasket fitted into the recess and extending therefrom.

Abstract: A roof assembly includes a frame having primary beams, secondary beams mounted transversely on the primary beams, and a ceiling grid suspended from the secondary beams. A method of assembling the roof assembly includes assembling the primary beams over the ceiling grid and connecting the secondary beams to the primary beams. The assembly is assembled on the ground and lifted to a fully installed position using a transportable lift.

Abstract: A construction unit includes weep openings through a front wall, side walls, and a center web, and at least one slot extending parallel to a rear wall to receive a flashing member, the slot being defined at least partially by the rear wall. An insert member having an insect screen is positioned in each of the weep openings of the front wall.

Abstract: A landscaping divider having a lower ground insertion section and an upper wall portion having a reinforced section. The reinforced section includes a plurality of raised areas founded in selected patterns. The raised areas form flat exposed surfaces.

Abstract: A freestanding partition system including upstanding posts for resting on a floor. At least one rail assembly extends between adjacent posts and is spaced from the floor. Saddles hang from the rail assembly and trays are suspended from the saddles to form raceways. A vertical pole assembly is detachably connected to each post and extends coaxially therewith so that a pair of adjacent pole assemblies and a rail define a panel-receiving space. A panel is supported by the rail and is receivable in the panel-receiving space.

Abstract: A rapidly erectable, removable, reusable, and raisable acoustical wall system is provided that comprises a plurality of wall panels, each of which has opposing side edges which include a front edge and a back edge, a plurality of panel support posts having pairs of parallel flanges for receiving the side edges of the wall panels to form a wall, and a plurality of wedging members for forcefully securing the front side edges of the panels into an acoustically-obstructing engagement with the front flanges of the panel support posts. Wedge-receiving recesses are provided at the top and bottom of each of the back side edges of the panels, the top recesses of one panel being registrable with the bottom recesses of another panel when two panels are stacked between the same support posts.

Abstract: A utility duct for elongated utility members is mountable on a wall structure and includes a retaining strip disposed on the wall structure and a capping member. Upper and lower connectors connect the capping member to the retaining strip to thereby form an internal duct passage for the utility members. The retaining strip has a plurality of supporting walls which together with the retaining strip form gutter-shaped channels for supporting the utility members. At least one of the supporting walls has an outer end formed as a seat which seats against the capping member when the capping member is mounted on the retaining strip by the upper and lower connectors.

Abstract: A stud spacer and mounting system is provided which consists of a plurality of studs, an elongated track member is positioned upon a flat horizontal surface, whereby the track member will substitute for a bottom sole plate. A structure is on the track member, for positioning and retaining the studs vertically in stationary spaced apart locations therealong, so that sheet rock boards can be secured flush to the studs when a wall is being constructed.

Abstract: Cap means embodying the concepts of the present invention are adapted to secure one or more roof panel members to a modular building structure. Broadly, such a cap means has a horizontally disposed base portion that is adapted to engage a supporting member incorporated in, and presented from, the modular building. An inclined, plate portion is supported from the base portion. The plate portion is adapted to receive, and support, the roof panel. A locking member secures each roof panel to one or more inclined plate portions. The cap means may also provide a facia member which may be attached to the roof panels with connector that inhibit removal. The cap members can provide space for the installation of electrical cable in a location that can be accessed either before or after erection of the building.

Abstract: A cap means embodying the concepts of the present invention is adapted to be supported on the upper extremity of the interior walls, the end walls and the connectors by which the successive panel members are joined to provide the interior and/or the end walls of a modular building structure. Such a cap means has a generally rectangular body portion that presents a substantially flat base which is adapted to be supported upon the upper extremity of wall members in the modular building. Mounting flanges extend downwardly from the base to embrace the wall on which the cap means is supported. A connecting means is located in spaced relation upwardly of the base, and one or more electrical cable races may be provided in the cap means between the base and the connecting means.

Abstract: A window contains a decorative grille bar assembly which is mounted atop a single glazing panel to simulate the presence of separate window panes. The grille bar assembly comprises a plurality of hollow metal extrusions which are connected to one another, and to the window frame, by plastic inserts which are press-fit in hollow ends of the grille bars. The inserts are connected to the grille bars and to the window frame by tongue-and-recess connections.

Abstract: An improved decking system is provided for an exterior deck extending from one side of a building. The exterior deck has a header around its periphery, a railing on the header and a plurality of joists spaced apart in parallel relationships between the header. The improvement consists of a plurality of plastic flooring members extending in slightly spaced apart parallel relationships transversely across the joists.

Abstract: A clamp for fastening plate-form bodies, such as solar panels, onto a support plate comprises two U-shaped portions opening in opposite directions with a common shank portion of the two U-shaped portions. The body, such as the solar panel, has its edge received in one of the U-shaped portions, such as the upper U-shaped portion, while the opposite edge is received in a lower U-shaped portion of an adjacent row of clamps. Preferably, an elastic part having a U-shaped and profiled surfaces is placed between each of the U-shaped portions and edges of the bodies to prevent damage to the plate-shaped bodies.

Abstract: An insulating plate unit comprises a first engaging end and a second engaging end. The first fin extends longitudinally from an upper edge of the first engaging end and along a length of the upper edge. A first wing extends longitudinally from a lower edge of the first engaging end and along a length of the lower edge. The first wing extends to a distance greater than that of the first fin. The first wing has an inward facing surface and an outward facing surface. A channel is defined by the first fin and the first wing. A recess is formed in the outward facing surface and extends along the length of the lower edge of the first engaging end. A ridge is formed on the inward facing surface and extends along the length of the lower edge of the first engaging end. A groove is correspondingly formed in the second engaging end for engaging with the ridge of another insulating plate unit. The second engaging end is complimentary to the first engaging end so that the insulating plate units can be interconnected.

Abstract: A collapsible framework capable of being manipulated between a collapsed condition and an expanded, locked condition includes a plurality of legs and a plurality of collapsible quad sections. The legs are disposed generally in parallel with one another and in a bundle when the framework is in the collapsed condition. Each quad section includes two split step scissor units and two step scissor units. Each split step scissor unit is joined at one end to a respective leg, and including two arms that are pivotally joined, at least one of the arms being telescopic and including means for locking the arm at a predetermined length. Each step scissor unit is joined at one end to the other end of a respective split step scissor and at its other end to the other step scissor unit, and each step scissor unit includes two arms that are pivotally joined, at least one of the arms being telescopic and including means for locking the arm at a second predetermined length.

Abstract: A rim tie connection for building structures including a wood post member, first and second wood rim members and a sheet metal connector. One specialized use of the rim tie connection is in constructing the floor support framing in gazebo structures. In such structures the wood post member is generally in a vertical position and the wood rim members are in a generally horizontal position. The sheet metal connector ties the ends of the wood rim members together and to the wood post member. The sheet metal connector includes a seat member, for holding the wood rim members and a back member for attachment to the front face of the wood post member. Floor boards attached to and supported by the wood rim members need not be notched to fit around the post member as in prior practice.

Abstract: A method of constructing a simulated marble, granite or other stone wall utilizes thin slabs of stone. An existing wall is smoothed and a plurality of wood supports or spacers are attached thereto in a random pattern. The wall is coated with a suitable adhesive adjacent the wood supports or spacers. Slabs of stone are pressed into the adhesive with the lower edges resting on the wood supports or spacers. After setting of the adhesive, the wood supports or spacers are removed and the space between the blocks are filled with stone chips cemented thereto. The materials for practicing the method are generally available as scrap from stone cutters and monument makers.

Abstract: Method and apparatus for wrapping a signature bundle by moving a wrapping sheet into the path of movement of a bundle, said sheet being maintained in self-supporting fashion by imparting a bend thereto as it is fed to the wrapping station. The bundle "crashes" into the sheet causing it to collapse and wrap itself about the bundle. When the wrapping operation is completed, the wrapping sheet is wrapped around three contiguous surfaces of the bundle. The sheet is automatically cut and a new wrapping operation is initiated. The wrapping sheet may be printed upon by an ink jet printing characters "on the fly". The characters are printed backwards and "bleed through" the wrapping sheet to appear in normal manner.

Abstract: An improved system for making packages includes one or more packaging machines, a storage device for storing film rolls and a transporting device for transporting these film rolls to the packaging machines for loading. The packaging machines are of a type having a cantilevered film-supporting shaft for holding a film roll and sealers for longitudinally sealing overlapped side edges of a film pulled out of a film roll supported by the film-supporting shaft and horizontally sealing tubularly formed film to make bags. The film-supporting shaft extends in the forward-backward direction of the machine such that, when a plurality of these machines are arranged in a mutually side-by-side relationship, their film-supporting shafts are also in a side-by-side relationship and can be easily approached from one direction. The storage device may store the film rolls horizontally or vertically. The transporting device may be a forklift.

Abstract: A self threader is disclosed for a wrapping machine having a tube former including tube former wall means terminating in a first tube former plate and a second tube former plate. The tube former is adapted to receive a first edge of a wrapping sheet between the first tube former plate and the second tube former plate and is adapted to receive a second edge of the wrapping sheet above the second tube former plate with the first and second edges and overlapping for forming the wrapping sheet into a tube to receive a product therein. The self threader comprises a guide plate secured to the second tube former plate and extending beyond the first tube former plate for directing a first edge of the wrapping sheet between the first tube former plate and the second tube former plate.

Abstract: A statically and dynamically self-adjusting and orthopedically-correct saddle and tree which are also anatomically correct for a rider. There are a pair of flat first bars which support the weight distributed on the horse's back. There is also a seat portion comprising a seat and a cantel with a pair of flat second bars extending forward from the seat. The seat with the seat center positioned at a point under the center of gravity of a rider and over the low point in the horse's back. Elastomeric members connect the seat portion to the pair of first bars. A girth is attached to the seat portion by a connecting harness and a pair of stirrup straps are attached to respective ones of the pair of flat second bars at a distance in front of the center of gravity of a rider equal to a distance between the rider's ankle and the ball of the rider's foot. The padding material over the first bars adjacent the horse's back dynamically adjusts to the horse's back at times of greatest dynamic motion.

Abstract: A manual powered lawn mower comprises a pair of large diameter drive wheels on an axle, two clutch and roller bearing mechanisms on the axle coupling the drive wheels thereto, a gear mechanism coupled to the axle for translating rotation of the drive wheels to rotation of a gear around a vertical axis, and a rotary type blade which is coupled to the gear mechanism via a vertical axle and another clutch and roller bearing mechanism. When the lawn mower is pushed forward, the clutch and roller bearing mechanisms on the wheel axle causes the axle to drive the gear mechanism, which in turn drives the vertical axle and the blade. When a drive wheel is not turning the axle faster than the speed that the axle is turning, that drive wheel is decoupled by the clutch and roller bearing mechanism and no longer adds either power or drag to the system. With clutch and roller bearing mechanisms on each wheel, a "differential" is provided which permits maneuverability without adversely affecting blade speed.

Abstract: A lawn mower cover is provided which is simple in design and inexpensive but which effectively protects the lawn mower from the elements. The cover is tub-like, lower edges of the cover resting on the lawn mower deck and an upper portion of the cover being provided with a fastening cord fixture portion for attaching an elastic cord, opposite ends of the cord being fastened to the underside of the lawn mower deck. A slot is provided on the cover to accommodate the motor crank rope and controls. The lawn mower cover is preferably formed from a plastic material, such as polyethylene, and is therefore lightweight and inexpensive.

Abstract: A lawn-cleaning device for picking up debris, comprising a rolling drum and spikes, tines and the like for collectively piercing leaves and the like includes an improved means for periodic protrusion and retraction of the spikes, tines or the like through spaced apart suitably-shaped openings in the rolling drum. Leaves and the like are pierced for collection on the spikes during protrusion and debris pierced by the spikes is released from the spikes and collected in a debris receiver during retraction. The improved means includes an array of spaced-apart spikes extending radially from a cylindrical element that is rotational about its cylindrical axis and is supported inside the rolling drum with its axis of rotation parallel to the axis of rotation of the drum.

Abstract: A haymaking machine, particularly a windrower of cut plants comprises a support mount which is attached to a frame that is adapted to be coupled to a hydraulic power lift of a tractor. At least one raking wheel being connected to one end of the support mount. The haymaking machine further comprises a protective device which extends at least partially around the at least one raking wheel and a deflector which works with the at least one raking wheel and limits a lateral ejection of cut plants. The haymaking machine further includes an adjusting mechanism for adjusting a position of the deflector with respect to the at least one raking wheel. The adjusting mechanism comprising a hydraulic cylinder which is connected to the deflector for changing the position of the deflector with respect to the at least one raking wheel.

Abstract: A modular combustion liner cap assembly (42) for use in a multi-nozzle combustor of a gas turbine includes a substantially cylindrical first sleeve (46) having a rearward end and a forward end; a rear plate (48) fixed to the rearward end of the sleeve (46), the rear plate (48) provided with a first plurality of openings (52) for receiving a corresponding number of fuel nozzles (32); a forward plate subassembly (68) fixed to the forward end of the sleeve (46), the forward plate provided with a second plurality of openings (80) in substantial alignment with the first plurality of openings in the rear plate (48); a plurality of open ended premix tubes having forward and rearward ends, each tube (96) extending axially within the sleeve (46) between the rear plate (48) and the forward plate assembly (68), each premix tube (96) supported within a corresponding one of the first plurality of openings (52) at its rearward end and a corresponding one of the second plurality of openings (80) at its forward end.

Abstract: The invention relates to secondary power system apparatus and method for use aboard aircraft in place of conventional auxiliary power units (APU's) and emergency power units (EPU's). The invention integrated power unit (IPU) performs the function of both an APU and an EPU, while avoiding the use of hazardous monofuels. The IPU includes a turbine engine operable on pressurized ambient air, or on pressurized stored air, along with jet engine fuel. The structure of a combustion chamber for the engine which is able to use pressurized air from two separate sources; of a control able to selectively operate the engine as an EPU, as an APU, and to effect operating transition from EPU to APU; and of a complete secondary power system with the IPU are all disclosed.

Abstract: A series of premix burners of different sizes are arranged at the inlet flow end of a combustion chamber, preferably of the form of an annular combustion chamber. The large premix burners, which are the main burners of the combustion chamber, and the small premix burners, which are the pilot burners of the combustion chamber, emerge into a front wall of the combustion chamber, these premix burners being arranged alternately relative to one another and at a constant distance apart. The main burners emerge directly into the front wall to the combustion space and the pilot burners have, downstream of their burner length, a precombustion chamber extending as far as the front wall. Both the evaporation of a liquid fuel and the burn-out of liquid or gaseous fuels in the low part-load range of the machine can be decisively improved in this precombustion chamber.

Abstract: A pressure wave machine with integrated combustion has a cellular wheel (10) containing a number of cells (16) in which an always recurring ignition and combustion process takes place. To maintain this always recurring process, neither a supply of ignition energy from the outside nor a control intervention should be necessary. Hot-gas channels (18) are provided, by means of which hot gas is taken from one cell (16), in which the combustion step belonging to a cycle has been completed, and recycled to a cell (16) which contains the fuel/air mixture which is to be ignited.

Abstract: A combustor dome assembly having a venturi and an auxiliary wall concentric with the venturi to provide an annular passage for channeling or directing a high velocity air jet from a swirler to a combustion chamber associated with a downstream end of the venturi, thereby facilitating the atomization of a film of water flowing along an inner surface of the venturi and out of the downstream end. In an alternative embodiment, a deflector is used (instead of the auxiliary wall) to direct the air flow towards the downstream end. The downstream end of the venturi may have a curved edge to permit the film of water flowing along an inner surface of the venturi to turn substantially perpendicular to the air flowing past the downstream end of the venturi which further enhances atomization of water. The venturi may also comprise a flange which is positioned in operative relationship with the downstream end for increasing the turbulence at the downstream end.

Abstract: A fuel control system for accurately controlling the fuel flow rate to a gas turbine engine during the initial stages of startup is provided. The fuel control system has a novel, closed control loop that measures the actual fuel flow rate to the primary nozzles of the engine, and uses this measurement to trim the commanded fuel flow rate signal generated by preprogrammed schedules in the engine's electronic control unit. By the novel arrangement of proportional and integral controllers, the fuel control system maintains a forward path gain of unity while permitting the independent adjustment of the gain of the controllers to achieve the system stability and response necessary for quick correction of fuel flow rate errors.

Abstract: A reduction gear for producing and feeding the rotation of a low pressure turbine driven by a combustion gas generated in a combustor to an output shaft is received in a central opening of a rotary type heat exchanger which is disposed so as to be perpendicular to a turbine shaft at a rear portion of a body housing of a gas turbine engine. As a result, not only the engine can be made small but also the output can be produced at to the opposite side of the heat exchanger. The combustor and a collector housing for collecting combustion gas are disposed on diametrical opposite sides in a transverse cross section of the body housing whereby an internal space of the body housing is effectively utilized and an axial dimension of the engine is shortened. Since the compressed air is supplied to the heat exchanger through peripheral walls of the body housing having a double construction, prevention of heat radiation from the body housing and effective utilization of an internal space of the body housing are realized.

Abstract: A system is provided for reducing the emissions of hydrochloric acid (HCl) from solid fuel rockets, especially during ground disposal. An aqueous solution (40, FIG. 2 ) of an alkali metal hydroxide is injected as a mist (50) into the rocket chamber (32) as the rocket fuel (30) is burned. The reaction of the alkali metal with hydrogen chloride (HCl) produces a salt and thereby minimizes the presence of hydrochloric acid in the rocket exhaust. An injected neutralizing material which reduces hydrochloric acid, but which produces less thrust than an equal weight of rocket fuel, can be injected into an operating rocket which carries a payload high above the earth, with the injected material being injected only while the rocket is at a lower altitude when hydrochloric acid is most undesirable. The injected material can be produced by a small auxiliary rocket device (82, FIG.