Abstract: A fishing lure retriever for quickly and reliably releasing and retrieving lures, plugs or other fishing tackle which have become entangled on obstructions, vegetation or timber during the fishing process. The device comprising a disk-shaped, weighted body having a frontal opening located therein and a suspension closure rotatably joined together by connecting apparatus which are spatially disposed within the aforementioned frontal opening and which securely engage the suspension closure holding it in place for being disposed about a snagged fishing line so that it can slidably travel along said line from a point spatially disposed between the tip of a fishing rod and the snagged lure, thereby freeing the ensnared lure and allowing both to be retrieved by the angler for inspection, repair, and subsequent reuse.

Abstract: A fishing line caster comprising an elongate handle with a side casting spool disposed about one end and adapted to rotate about the handle and a casting guide connected to the handle and forming an upstanding skirt extending about the periphery of the spool and spaced radially therefrom, line positioning apparatus being formed on the skirt to maintain the line extending in some predetermined orientation relative to the caster prior to the line being cast.

Abstract: A trap includes an outer shell having an entrance at one end and a removable end plate at the other end. The outer shell has a number of holes for the passage of water inside the outer shell. An inner shell that also has water passage holes and that preferably is on the order of one half the length of the outer shell, is pivotally supported in the outer shell adjacent the entrance of the outer shell. The inner shell is pivotally supported about its center axis and has defined as part thereof a ramp that is weighted so that the ramp assumes the proper position to extend upwardly from the entrance.

Abstract: A main wheel rotating in a vertical plane has marble receiving notches in opposite sides of its periphery. Uprights on opposite sides of the wheel support the wheel shaft and a transfer tray with reverse inclines over the wheel. A smaller drive wheel connected to the shaft has angularly spaced lift pins around a half of its periphery. The pins engage notches in the side of a vertically reciprocable lift bar having an elevator plate on its top. The lift bar is guided along the edge of one upright between a raised position in which the elevator plate transfers marbles to the upper edge of the incline, and a lower position in which the elevator plate is located alongside of the main wheel and radially inwardly from the peripheral notches therein. An intermediate transfer shelf is fixedly supported by the one upright to receive marbles discharged from one of the peripheral notches in the main wheel.

Abstract: A toy airplane is constructed from a straw and wing components taken from a food container. The main wing is formed from the container and mounted on the forward end of the straw. A V-shaped midregion is formed in the main wing with a living hinge forming the bottom of the V-shaped midregion. A brace is inserted through slits at the top of the V-shaped midregion to form a triangular wing structure that resists deformation during loading on the wing. A rudder and an elevator wing are formed from the container and mounted on the rear end of the straw, and a weight is mounted in the forward end of the straw to complete the construction of the airplane.

Abstract: A toy has a body in the shape of a characterized animal. At least one of the extremities, preferably the head, is attached to a movable member which moves between a retracted position wherein the majority of the member is located inside the body to an extended position wherein the greatest portion of the member is located external of the body. The toy includes a mechanism which will move the member from its extended position to its retracted position upon activation of a mechanism at least a portion of which is exposed outside the body for manipulation by the operator. The member in going from its extended position to its retracted position reaches its retracted position and then automatically reverses itself until it is once again extended.

Abstract: A toy of the flying saucer type, to be thrown through the air from one player to another, the toy having battery-powered light emitting diodes located relatively close to the center and thus protected from abrasion or impact shock when the flying saucer hits the hand of a receiving player or hits the ground when a receiving player fails to catch it. The body of the saucer is of translucent plastic material, so that each light emitting diode creates, when lit, a luminescent area around the diode. In addition, three light guides in the form of optical fiber guides extend from each diode approximately radially outwardly to the outer rim of the flying saucer, creating illuminated areas spaced circumferentially along the outer rim of the saucer.

Abstract: In a model of a steam locomotive which is driven by an electric motor and includes a model reproduction of the valve gear regulating the steam control valves of the steam cylinders, the electric motor is coupled to the axle of a set of driving wheels of the model via a drive shaft, which is permitted a limited amount of axial float and is coupled to the axle by a gearbox. Axial movement of the drive shaft is produced by interaction between the gears of the gearbox and is controlled by coil springs disposed on the shaft at opposite ends of the gearbox. These axial movements result from changes in the amount and direction of the torque applied to the gearbox by the electric motor and are transmitted to the model valve gear by an axially movable rod.

Abstract: A growing frame for plants is provided wherein the framework consists of aluminum members which support a plastic netting. Single or multiple sections can be provided and a simple method is provided for fastening the netting to the frame and adjusting the tension on the netting.

Abstract: This invention is a non-agricultural method for producing cotyledons of those plant species whose cotyledons have commercial value for the manufacture of useful products or for direct use as foodstuffs such as Theobroma cacao L. (cacao). The method involves three (3) distinct steps, namely, (1) proliferation of embryos by asexual embryogenesis through in vitro culture using a defined media; (2) the growth of the embryos in vitro in a media that will prevent premature germination, and (3) harvest of the in vitro-grown cotyledonary tissue.

Abstract: A method of promoting the transport of water through medium and coarse grained soils comprising the step of applying to the medium or coarse grained soil a soil amendment composition at a level of less than 20 parts per million parts by weight of dry soil, and preferably less than 5 ppm. The composition comprises a substantially linear, substantially water-soluble hydrophilic polymer having a molecular weight greater than 50,000. A preferred polymer is poly (ethylene oxide) having a molecular weight of 300,000 to 7,000,000.

Abstract: Anti-closing device for use with automatically opening and closing doors or the like, having a reversing switch for the door drive and a flexible rope for actuating the switch, the rope being held vertically along the free edge of the door in spaced relation and resiliently tensioned under spring action. One end of the rope is operatively connected to the switch for actuating the switch upon a deflection of the rope. A plurality of sleeves are arranged in a vertical row on the flexible rope and the lower end of the rope is connected to the lowermost sleeve while the uppermost sleeve bears against a support secured to the door whereby the sleeves are pressed against one another by the tensioning of the rope. The end surfaces of the sleeves which face one another bear tightly against each other in the position of rest and have a substantially larger outside diameter than the flexible rope.

Abstract: Right and left hand casement windows employ a simple and compact operating linkage which can be installed either to the right or to the left of a center mounted gear drive, thus accomplishing universal operation of left or right hand windows through a structurally identical linkage. Locking tabs provided on an operator link of the mechanism coact in right or left hand mode of operation with locking projections on a stabilizer link to assure positive and secure closing of the window even in cases where the primary jamb-mounted window sash latch is unfastened.

Abstract: A semiautomatic sliding door device comprising a sliding door, an outer framework slidably supporting the door for movement between the positions of `open` and `closed` and a driving device comprising a tension spring energizing the sliding door toward the `closed` position, a connecting wire, and a guide wheel for guiding the wire. This device is equipped with a braking device comprising permanent magnets on the outer framework and a braking plate made of copper or aluminum sheets on the sliding door. Coiling said wire around the block in proper manner, the length of elongation of the tension spring can be reduced relative to the stroke of the sliding door.

Abstract: A grinding head of the type comprising an expansible grinder adjusted by an expansion cone connected to an expansion rod, comprises a differential action hydraulic ram for operating the expansion rod. The piston of the ram is connected to the expansion rod, and the piston is slaved in position by means of a hydraulic slide valve. The valve slider is operated by a stepping motor which is program-controlled.

Abstract: A vibratory finishing machine has a bowl structure supported by elastomeric mounts, and a drive system for vibrating the bowl structure about a node point located along a vertical center axis of the bowl structure. Each of the elastomeric mounts has one portion secured to the bowl structure, and another portion secured to a base structure. The one and another portions define an axis of each mount. The mounts are located in a horizontal plane in which the node point lies and are arranged such that their axes intersect the center axis above the node point. The intersection point lies near or at the center of mass of a loaded bowl structure. The bowl structure includes a replaceable liner of simpler construction than prior replaceable liners. An adjustable eccentric weight assembly permits the gyratory characteristics of the bowl structure to be changed to meet different operating requirements.

Abstract: A heat convection barrier particularly adapted for use with greenhouses and warehouses consists of a series of inflatable tubes which are suspended beneath the roof of a structure and inflated into contact with each other to form a barrier against heat loss through the roof. Each of the tubes includes an integrally formed seam by which the tubes are suspended beneath the roof and an inflatable main body portion, and the tubes are spaced from each other a distance less than the inflated diameters of the main body portions so that when they are inflated they contact each other and form a continuous barrier. One end of each of the tubes is tied off and the opposite ends are split and wrapped about an apertured conduit and a low pressure fan or blower communicates with one end of the conduit to inflate the tubes.

Abstract: A protective barrier (14, 15) for removable installation at the edge of a stage surface member (12) supported on legs (13) and having a framing flange (13, 101), including a guard rail (20, 60), a member (24, 64, 103) for supporting the rail on the stage surface, apparatus including a plurality of hook members (25, 65, 104) for cooperating with the flange to prevent outward movement of the guard rail with respect to the surface member, and an arrangement including a locking member (40, 80), pivotable into an operative position in which it cooperates with the legs 11 to prevent outward tilting of the guard rail.

Abstract: A series of rectangular sheet metal roof and wall panels each includes inner and outer corrugated skin portions which are connected by web members or portions which may also be corrugated. A fabricated sheet metal ridge beam rigidly connects the inner skin portions of the roof panels on opposite sides of the ridge to transmit tension forces, and connects the outer skin portions of the roof panels for transmitting compression forces. Inclined inner eave attachment plates or panels rigidly connect the skin portions of the roof and wall panels, and other eave attachment members rigidly connect the roof panels and wall panels to form a building structure which has substantial total strength and may be easily and quickly erected without the use of a crane. Each of the roof and wall panels is prepunched and may be formed from a single metal sheet which has a single major corrugation or a Z-shaped lateral configuration.

Abstract: Disclosed are several embodiments of a water-tight plug which are particularly suitable to close and seal holes drilled through the exterior wall surface of a house or mobile home during installation of insulation materials. The disclosed plugs include fluid-tight sealing means provided adjacent a head of the plug which is sandwiched during plug installation between a surface around the periphery of a hole and the plug head. In addition, the plugs include a projection from the plug head extending into the hole and a means for radially outwardly expanding at least a portion of the projection against the interior periphery of the hole and locking the projection in its radially expanded position to lock the plug in position.

Abstract: Pre-formed concrete floor slabs stacked one on top of the other, at or near ground level, are raised vertically into desired elevations for permanent attachment to the building structural columns. The same cylindrical forms used to pour each floor's height of the building's columns are also utilized as hydraulic cylinders to lift the forms, and connected floor slabs, upon the previously hardened column sections to the next higher floor level where the process is repeated until the entire building structure of columns and floors is in place.

Abstract: This invention relates to a water cooling jacket for protection from fire which aims at the protection of a human body from fire. More particularly, it relates to a water cooling jacket for protection from fire characterized by being composed of: mounting a water tank on a ceiling of inner and outer side cases installed with a given interval; forming a water pool case capable of gathering waters outside the outer case; setting an outer wall-plate covered on the inside thereof with fiber plates, such as glass wools or the like, with given intervals outside the inner and outer cases; and making waters flowing from said water tank and said water pool case fall down along said outer wall-plate continuously.

Abstract: Internal walls of building structures include a plurality of longitudinally spaced-apart studs extending vertically between floor and ceiling levels and a horizontally longitudinally extending top-plate atop the vertical studs and extending a finite vertical-depth below ceiling level. Disclosed herein are novel prefabricated modules and methods for defining the upper portion of an arbitrarily selectably shaped archway to be constructed through the building interior wall. The prefabricated modules comprise a pair of parallel upright panels maintained in finite lateral-separation with internal bracing means including vertical rails attachable alongside upper portions of neighboring studs flanking the intended archway. The module also comprises arbitrarily selectably shaped archway delineating means extending laterally between the panels and spaced more than said vertical-dept below the module top-edge and intervening portions of the bracing means.

Abstract: The present invention relates to a shingle-type building element in form of several shingle-like surfaces placed side by side forming a joint-structure or a single shingle piece, comprising a form of a plate which in the right angular cross-section shows the upper member with a width b a height h and a wedge-shaped lower member with the wedge point, with a truncated side, in case of a wedge stump which is later connected at the ridge, or the upper member facing the top of the wall by which the wedge-shaped lower member is either in the cross-section a triangle ABC of which side AC is equal to the height h of the upper member and of which the side BC is smaller than half of width b or the extension is such that it shows in the cross-section a triangle ABC, and a polygon joint below which gives after the building elements are laid in the cross-section a right angular basic member, by which the upper member and the lower member is one unit made of the same or different materials, the upper member of the single-t

Abstract: An assembly of glazed ceramic tiles for the interior walls and ceilings each tile comprising a glazed body with glazed spacing lugs on all four sides of the tile at least two of the glazed lugs on two sides extending substantially the full length of the sides and two glazed lugs on the other two sides extending substantially the full length of the sides or two shorter glazed lugs symmetrically arranged thereon one of each of the shorter lugs being longer than the other, all the glazed lugs on all the sides when assembled engaging glazed lugs on adjacent sides.

Abstract: The invention provides a composite metal and wood joist, a joist assembly, and a floor panel incorporating two or more of such joist assemblies connected by plywood floor panels. Each composite joist member consists of a metal channel having a plurality of nailable stiffening members disposed along its length, preferably one at each end and the others spaced uniformly along its length. A joist assembly consists of two spaced parallel joists, the assembly having a plurality of stiffening assemblies along its length, each stiffening assembly consisting of two adjacent stiffening members connected by a cross member.

Abstract: Disclosed is a connector for releasably joining a plurality of substantially planar elements, such as shelves and uprights, together in a predetermined angular relationship by gripping adjacent edge portions of the respective elements. The connector comprises a central core member and a series of gripping members which screw into the core member and grip the planar elements therebetween.

Abstract: A basic building block with rectangular projections d and a (FIG. 1) rising from the top center portion of the plane of bearing surface 42 (FIG. 4) being approximately one-eighth of the total height, labeled "d" and "H", respectively, in FIG. 3, the dimension "j" (FIG. 4) of the projection being somewhat less than the dimension "k" of the end of the block. The aforementionedprojection is symmetrical with the intersection of the longitudinal center line "X" and the traverse center line "Y" in FIG. 4.

Abstract: A spacer element is provided for attachment to a pair of parallel wires of a mesh spaced from a surface of a concrete form or wall and having a projection adapted to maintain the spacing between the wall and the plane of the mesh, the element being of generally hairpin shape and providing a duplicate pair of hooks for hooking over one wire, a duplicate pair of second, S-shaped hooks for hooking over a parallel wire, a duplicate pair of V-shaped projections, and a bight joining the S-shaped hooks and providing a looped lever arm for receiving a tool for forcibly applying the element to the mesh.

Abstract: There is shown apparatus and method for producing a container preferably made or constructed of heat sealable material. Shaping of the container is by forming and not heat stretching or other distortion. In the depicted examples of the container the travelling strip is formed with a midwidth transverse cut leaving on and at each edge a carrier strip. The formed container is preferably filled with a product and then a cover to retain the product is brought to this container and heat sealed in place by the apparatus. After this filling and sealing, the package is further severed at the prior transverse cut to make separate packages.

Abstract: A machine and process useful for fastening a closure member to a container with an upstanding tubular wall, an end edge of which is folded over onto itself to form a folded-over, reinforced portion of double thickness at that end, the closure member having an upstanding tubular inner wall conforming to the inner surface of the folded-over, reinforced portion and a downstanding tubular outer wall connected thereto and conforming to the outer surface of the folded-over, reinforced portion, thereby forming a tubular channel in which the folded over, reinforced portion is seated in frictional engagement, which comprises a dish-shaped fastening head adapted to be positioned around the closed end of the container between the jaws of a pincer, one end of which comprises a punching point and the other of which comprises an anvil, and a wedge or a wedging toggle arranged to wedge a plurality of said punching points into selected portions of the upstanding tubular inner wall of the channel into the inner surface of the

Abstract: An article transfer apparatus (10) is provided for transferring articles (16) from a predetermined first position to a varying second position and discharging the articles (16) at the second position. Difficulty is often encountered in controlling the drop height of articles (16) delivered by a conveyor (18) for random placement at varying levels in a container (12). It is desirable to minimize the drop height to prevent damage to the article (16). A carriage (36) on the article transfer apparatus (10) is controllably operated to controllably discharge articles (16) at a preselected distance above either the bottom of the container (12) or articles (16) predisposed within the container (12). The invention is particularly useful for transferring finished metal piston pins (16) from a conveyor (18) to a tote box (12).

Abstract: A hollow and generally closed body 10 of a safety rotor fits on the motor shaft 12 of a rotary mower and replaces a conventional mower blade. The diameter of body 10 is from 0.5 to 0.9 times the width of the swath of the mower, and several strands 11 extend far enough outward from body 10 to cut to the full width of the swath. Spools 21 or 72 contained within the body supply the strands, and a holder responsive to centrifugal force prevents strands 11 from moving outward as body 10 rotates. The strands can be automatically replenished by a strand feeder that operates when the mower slows down and speeds up.

Abstract: An agricultural mower having a crop cutting rotor that is rotatable about an upright axis and cuts a strip of crop along a cut edge of the crop so as to emerge laterally from said cut edge, and a crop guide that is located adjacent the periphery of the rotor where it emerges from said cut edge of the crop so as to support the crop upright at said edge while it is cut. The guide thereby avoids leaving any uncut lines of crop caused by the rotor pushing crop aside at a cut edge in the crop where it is unsupported by adjacent standing crop. The invention is particularly applicable to a mower with two or more cutting rotors that are rotatable in the same sense about respective upright axes alongside one another with one rotor offset rearwards relative to the other so as to cut crop adjacent a cut edge left by said other rotor, the crop guide being located adjacent the periphery of said one rotor to support the crop along said edge.

Abstract: An attachment for a combine harvester includes a plurality of narrow housings disposed forwardly of the sickle bar of the harvester. Within each housing an endless belt carries a multiplicity of flexible tines which, for a given course of the belt, extend laterally across a grain receiving channel between housings. The tines protrude through slots in the housings for the course of the belt moving toward the harvesting machine, but are folded within the housings on the return course.

Abstract: Tobacco plants are harvested by having an operator ride a harvesting vehicle along a plant row so that as plants are successively cut from the ground by a cutter on the vehicle, the operator may grasp the severed plant and impale the same onto an upright stake likewise carried by the vehicle. As the stake becomes loaded with plants, the operator may remove the loaded stake from its holding socket on the vehicle and lay the same on a rearwardly disposed deck. He then replaces the loaded stake with an empty stake obtained from a supply thereof carried by the vehicle, and repeats the cutting, impaling and replacement steps until a sufficiently large accumulation of loaded stakes has been obtained on the deck. Thereupon, the deck is tilted to an inclined position so as to dump the plant-loaded stakes onto the ground in a pile, whereupon the cycle is repeated.

Abstract: An apparatus for removing foliage from row crops including a frame adapted to be connected to a prime mover for movement in a forward direction. A plurality of rotors are rotatably attached to the frame and are disposed transversely to the forward direction of movement thereof. A mechanism is provided for selectively rotating the rotor. A first brush is attached to each rotor at a first place on the rotor, a second brush is attached to each rotor at a second place on the rotor, the second brush being spaced from the first brush. An adjusting structure is provided for selectively adjusting the relative positions of the first and second brushes on each rotor with respect to each other for adjusting for the width of rows of crops.

Abstract: The chopping cylinder has knives that extend longitudinally of the axis of rotation of the cylinder and which are twisted in such a way that their longitudinal cutting edges wind generally helically around the periphery of the cylinder so that a scissor-like shearing cut is obtained as the knives move past a cooperating shearbar. Special crop flow directors are bolted to the inner faces of the knives between supporting spiders for the knives so as to intercept the crop flow headed toward the interior of the cylinder following severance and to maintain the same adjacent the outer periphery of the cylinder during the movement of the crop material around and with the cylinder to a point of discharge. Special mounting hardware permits the individual directors to be attached directly to the knives in a manner to increase the efficiency and performance of the cylinder.

Abstract: A yarn friction false twist apparatus is provided which comprises three sets of friction discs mounted on rotatable spindles in a triangular arrangement, and which includes a plurality of yarn deflecting arms for moving the yarn from an inoperative laterally spaced position where thread-up may be effected, to an operative path of travel disposed centrally between the sets of discs and wherein twist is imparted to the yarn by contact with the rotating discs. The yarn deflecting arms are mounted on a pivotally mounted door which also serves to protectively cover the sets of discs during operation. Each of the yarn deflecting arms has an open yarn guide at the forward free end thereof, with the length of the arm being such that the guide is free of contact with the yarn during the twisting operation.

Abstract: An automotive single shaft gas turbine engine has a monorotor with a plurality of radial flow compressor blades thereon discharging compressed air to a recuperator for transferring heat from engine exhaust to the inlet combustion air to a combustor which produces motive fluid directed across a plurality of radial inflow turbine vanes on the monorotor and wherein the automotive gas turbine engine is further associated with an exhaust flow system including the regenerator, a series connected intercooler and a secondary compressor to produce a subatmospheric pressure source in the engine gas cycle to improve the thermal efficiency of the engine cycle and to further define a vacuum source for operating automotive accessories; and to provide a heat source at subatmospheric pressure for passenger compartment heater operation. The subatmospheric source is connected to the secondary compressor which is operative to compress turbine exhaust gas back to one atmosphere of pressure for discharge to the environment.

Abstract: A method and apparatus for regulating the pressure of water in a closed hot water circuit is disclosed. The apparatus includes a closed hot water circuit and a steam circuit, which water circuit and steam circuit are both heated by relatively hot waste gases exhausted from a gas turbine power plant. Two water lines link the water circuit to the steam circuit. A valve in each of these lines regulates a flow of water through each of the lines. A pressure sensor senses the pressure of the water in the water circuit. The pressure sensor communicates said pressure to a valve regulator, which valve regulator regulates the opening and closing of the valves in the water lines.

Abstract: A reactor for the oxidation of unburned and partially burned components in the exhaust gas from an internal combustion engine comprising a chamber which is substantially circular in cross-sections perpendicular to its axis, one or more inlet pipes which pass a mixture of exhaust gas and air substantially tangentially into the chamber near to one end thereof, and an outlet pipe near to the other end of the chamber and which is so arranged that exhaust gas leaves the chamber substantially tangentially. The tangential inlet and tangential outlet of gases minimizes energy losses in the gas passing through the reactor. The ratio of the cross-sectional areas of the inlet pipe(s) to reactor chamber is preferably from 1:9 to 25:36, and similar ranges of cross-sectional area ratios are preferred for the outlet pipe and chamber. The ratio of the length of the reaction chamber to diameter is preferably from 1:1 to 4:1.

Abstract: A device is disclosed for treating exhaust gases from an internal combustion engine having a gas inlet adapted to be connected to the exhaust of the internal combustion engine and a plurality of serially arranged interconnected reaction chambers. The first of the chambers is connected to the gas inlet and includes a gas outlet forming a gas inlet into a second chamber. The second of the chambers has a gas outlet forming a gas inlet with a third chamber, and so on. The last reaction chamber has a gas outlet to atmosphere. A perforated gas deflector plate is mounted transversely of the path of gas flow in alignment with each outlet of the reaction chambers and spaced inwardly into the reaction chamber associated with the outlet. Means are provided for spraying purifying fluid containing an aqueous solution of sodium percarbonate and sodium bicarbonate into each reaction chamber and drain means associated with each reaction chamber draining the remains of the aqueous solution from the housing.

Abstract: The tandem master cylinder is provided with an equalizer device comprising a plunger mounted intermediate two chambers which are respectively connected to the two cavities of the master cylinder. At least one of the ducts connecting the master cylinder and the equalizer device is formed with a constriction slowing down the flow of brake fluid so as to permit a pressure buildup in one of the braking circuits, in case of failure of the other circuit, since the very start of the pedal stroke.

Abstract: The principle of the acid/soda fire extinguisher is applied to generating pressure in the expansible chamber of a power plant or engine.Pressure is generated in a first container by adding sulfuric acid to a bicarbonate of soda solution and the pressurized solution is applied alternatively to the two sides of a double acting piston. The unpressurized side of the piston is alternatively connected to a second container for the collection of used solution.When the solution in the first container is used up, the solution in the second container is activated by the addition of more sulfuric acid and the cycle is reversed.

Abstract: An improved cylinder head for a fuel injected internal combustion piston engine is channeled so as to form a miniature steam boiler at the combustion end of the cylinder bore enabling injected water to flash into superheated steam in a few milliseconds. The cylinder head is configured to provide the maximum heat transfer surface area thereon. The generated steam in the engine supplements its power, and assists in controlling engine temperature.

Abstract: A combustor assembly for an automotive gas turbine engine includes a continuously ignited, pilot flame tube supported on a combustor dome immediately downstream of a prevaporization prechamber with a fuel and air swirler. The pilot flame tube has an air swirler and fuel nozzle supported on an interior bulkhead and is associated with a fuel system that maintains a shielded pilot flame to prevent flame-out of flammable air/fuel mixtures in the main reaction chamber of the combustor; the fuel system supplies greater fuel to the pilot flame tube at engine fuel start and stop to produce an extended flame plume that extends into the reaction chamber to burn residuum of fuel when the air/fuel ratio in the main reaction chamber mixture is below the flammability limit of the fuel.

Abstract: A gas turbine combustion chamber in which the primary air inlets in a peripheral wall of the combustion chamber are defined by open-ended tubes extending inwardly from the peripheral wall by a substantial distance into the combustion chamber and having their inner, that is their outlet, ends facing in an upstream direction within the combustion chamber, whereby each of the tubes will introduce a stream of air with at least a component of motion in the upstream direction along or parallel with the longitudinal axis of the combustion chamber, thereby to effect recirculation of fuel, air and combustion gases within the combustion chamber. Similar air inlet tubes may be provided for introducing secondary and tertiary air into the combustion chamber.

Abstract: A portable cooler includes a urethane foam shell having a storage compartment and fan recess. An internal heat exchanger is mounted to a wall of the storage compartment and conducts heat out of the storage compartment by means of a thermally conductive block to an external heat exchanger mounted in the fan recess. An electric fan mounted in the fan recess blows outside air through fins of the external heat exchanger. A grill covers the fan recess. A solid state thermoelectric device is disposed between the external heat exchanger and the thermally conductive block. A control circuit includes a first thermistor which senses the temperature of the internal heat exchanger. A comparator having one input coupled to a temperature control reostat and another input coupled to the first thermistor controls a switch circuit which connects the terminals of the thermoelectric device and the terminals of the fan motor to a supply voltage conductor.

Abstract: Articles of food to be frozen are delivered to an article conditioning conveyor and are maintained in a fluidized state by refrigerated air flowing upwardly therethrough. The conveyor is driven forwardly but is interrupted by at least one downward stepping movement, causing a thinning of the product bed and a rapid increase in air velocity to thus cool and separate the food articles preventing them from freezing to one another. The food articles are thereafter subjected to deep bed mass fluidization by flowing freezing air therethrough in a fluidized state.