Abstract: A low pressure venting panel acts to safely vent a pressure vessel, such as a bag house, from overpressure conditions. The venting panel is particularly responsive and predictable at low pressures. The panel includes a thin rupture body with a central group of apertures and slit lines emanating from the apertures. A thin sealing membrane is bonded to one surface of the rupture body at least in the area of the slits. The characteristics of the sealing membrane enable the membrane to resist expansion in the area of the slits when pressure is applied to the rupture body, thereby resisting rupture of the membrane up to the design rupture limit of the venting panel.

Abstract: An integrator for spectral analysis of printing illumination from photographic film including a lens for collimating the printing illumination into a beam. The integrator includes first and second color separation filters which divert respective colors from the beam. First and second phototransducers are provided for receiving the respective colors. A third phototransducer receives the beam passing through the first and second filters. Each phototransducer produces a signal representative of the intensity of the respective color.

Abstract: A filter cleaning device for purging filters made of porous material employs a tank containing pressurized air and a flow conduit communicating with the tank. A shield mounted on the flow conduit is shaped to engage the filter whereby the pressurized air is suddenly released into an interior chamber of the filter upon actuating a flow valve. An extensible member such as a spring is mounted inside the conduit and has a air flow diverter attached to its lower end so that, upon the sudden rush of air, the flow diverter spreads the air outwardly and radially toward the filter medium and the extensible member gradually extends so that dust is purged substantially from all parts of the filter.

Abstract: An electrical connector for insulating a connection between at least two wires. The connector includes a cup shaped casing and an inner core, each having a closed end and an open end. The inner core is received within the casing defining a fully enclosed sealed cavity therein in which an insulating compound is received. The casing includes an end wall which has a plurality of recesses extending inwardly of a surface thereof terminating in thin covering membrane. A piercing member is provided for forming apertures in each of the membranes for receipt of a wire therethrough, said apertures each having a diameter slightly less than an associated wire extending therethrough providing a snug fit therearound, thereby sealing the connector cavity.

Abstract: A control system for an acreage counter, controllable by an electrical logic condition, includes: a flip-flop having enable logic condition output upon being set, and an inhibit logic output upon being reset; an enable counter and an inhibit counter connected respectively to the set and reset inputs of the flip-flop; an enable clock and an inhibit clock connected respectively to the enable and inhibit counters; and sensors or switches connected to the respective counters and cooperating respectively with an operating lever or operating switches of an agricultural implement to actuate the associated counters upon change in the status of the operating controls. The clocks and counters function to delay setting or resetting of the flip-flop for a selected time so that minor adjustments may be made to the working position of the implement without falsely initiating or interrupting the acreage counter.

Abstract: A dual axis inclination measuring system includes a sensor unit for placement on a surface to determine the inclination of the surface with respect to two mutually perpendicular horizontal axes and an indicator unit connected to the sensor unit and operative to process signals generated by the sensor unit to determine and indicate the inclination of the test surface. The sensor unit includes a dual axis sensor element which cooperates with circuits for generating signals having voltage levels proportional to the inclination of the sensor. The indicator unit includes an analog-to-digital converter operative to convert the voltage levels to digital words and a digital computer operative to calculate angle readings from the digital words. The computer includes a look-up table of a plurality of the digital words stored in a memory of the computer and is calibrated exclusively to the particular sensor with which the computer is used, thereby providing great accuracy.

Abstract: A reinforced valve member including a body having upstream and downstream sides and an annular rim forming a first sealing surface. A frusto-conical portion of the body extends upstream from the first sealing surface and displays a second sealing surface. A substantially conical flow diverter extends upstream from the frusto-conical portion and a plurality of guide fins extend upstream from the flow diverter. The annular rim, frusto-conical portion and flow diverter are all coaxially aligned on the longitudinal axis of translation of the valve member. A dish-shaped reinforcing washer is embedded in the valve member body and includes a concave side oriented upstream and a convex side oriented downstream.

Abstract: A chair height adjustment mechanism selectively positions a seat section relative to a base and is situated between a barrel attached to the chair base and a threaded spindle extending downwardly from the seat section and telescopically received within the barrel. The adjustment mechanism includes an adjusting nut assembly receiving the spindle and extending between the barrel and spindle. A spring urges the nut assembly toward engagement with a detent member connected to the barrel. When the seat section is occupied, the spring is compressed and the nut disengages from the detent member, and the spindle and nut rotate together as the seat section swivels. When the seat section is unoccupied, the spring urges the nut into interlocking engagement with the detent member, and the spindle rotates relative to the nut as the seat section swivels in order to cause the seat section and spindle to adjust upwardly and downwardly depending on the direction of seat rotation relative to the base and barrel.

Abstract: A structure is formed with a beam, floor and ceiling joists, studs, top and bottom plates, rafters and headers consisting of composite wooden members. The composite wood members include aligned pairs of elongated pieces, each piece including a narrow face, a wide face and a pair of radial faces. The faces extend longitudinally in relation to the piece. The pieces are bonded together at their narrow faces between the wide faces. The transverse cross-sectional geometry of each piece comprises a trapezoid with an apex side at the narrow face, a base side at the wide face and a pair of radial sides; each radial side being associated with a respective radial face. The members may be formed with pairs of tapered pieces oriented in opposite relation with respect to each other.

Abstract: A bubbler head for use on a sprinkler or irrigation system comprises a body having a water passageway and an air passageway therethrough. The water passageway extends radially outwardly from a central entrance and includes a serpentine portion. Air is drawn through the air passageway and is thoroughly mixed with the water in a mixing chamber prior to the mixture being sprinkled or discharged onto the ground in a nonerosive fashion.

Abstract: A wired spread spectrum data communication system includes a modulator and a demodulator coupled to a transmission line having other signals thereon. The modulator includes a pseudo-noise (PN) generator and a clock providing, respectively, a PN code signal and a clock signal for combination in exclusive-OR (XOR) gates with a low bit rate data signal. The demodulator includes a phase locked loop for clock signal recovery and an identical PN generator providing, respectively, a local clock signal and PN code signal for combination in XOR gates with the encoded data signal for the removal of the clock and PN code signal components from the encoded data signal. The demodulator further includes circuitry for synchronizing the local PN code signal with the PN code component of the incoming encoded data signal.

Abstract: A lever locking worm adjustable wrench includes a handle terminating in a fixed jaw, a movable jaw slidably received in the handle in opposing relation to the fixed jaw, and rack gear teeth formed on the movable jaw. A worm mounting arm has a worm gear rotatably mounted thereon and is pivotally mounted on the handle to move the worm gear in a direction substantially tangential to the direction of the rack. An operating lever is pivotally connected to the worm mounting arm and is connected by a toggle link to the handle. Upon movement of the lever toward the handle, the movable jaw is moved toward the fixed jaw to grippingly engage a workpiece, such as a nut or bolt head therebetween. The toggle link, operating lever, and handle cooperate to define an over-center locking mechanism whereby the movable jaw is releasably locked in gripping engagement with the workpiece against the fixed jaw.

Abstract: A sled is provided for traversing a snow covered surface comprising an elongate frame and an elongate flexible runner pivotally mounted to each side of the frame. The runners are mounted onto the frame at a longitudinal position of the runner through which a single resultant force acts in opposition to a force exerted onto the respective runner by a snow covered surface when the sled is traversed thereacross. To provide steering, the runners are rotated about their respective mounting axes and front portions thereof are initially bent toward the direction of turn. A transverse link connects the runners at their frame mounting points assuring that both runners rotate in concert about their respective axes. Conventional snow skies are modified to act as the runners.

Abstract: A foldable traffic warning cone utilizes a first panel of generally fan shape having triangular faces joined at adjacent sides along face folding lines. The first panel has opposite free sides which interconnect to fold the first panel into an upright polygon. The triangular faces of the first panel have bottom ends with extending flaps which cooperate with a second panel having a number of sides commensurate to the number of faces on the first panel and which forms a base for the first panel. The second panel has wings extending outwardly from each of the sides and which are foldable to provide a wall extending about the base. The wings also trap the flaps and thereby connect the upright polygon and the base together. The warning cone can be selectively folded and unfolded for use and storage.

Abstract: A method for recovering hydrocarbons from a subterranean hydrocarbon bearing formation comprises the steps of providing a production well penetrating in the formation and a plurality of injection wells surrounding the production well. Water is injected into the formation through the injection wells to produce a water flood barrier ringing the production well. A mixture of nitrogen and carbon dioxide gas is injected through the production well and into the formation with the water barrier acting to inhibit the escape of the gas from the portion of the formation surrounding the production well. Gas is injected through the production well into the formation until the formation is pressurized and then gas injection is ceased and the mixture of hydrocarbons and injection gas flowed from the formation through the production well.

Abstract: A fluid metering device is provided including a chambered rotor for metering correctly proportioned mixtures of air and a vaporized fuel to an internal combustion engine. The rotor includes radially disposed chambers and is enclosed in a housing having an inlet port and an outlet port. Upon rotation of the rotor the chambers are alternately biased into flow communication with the inlet port and the outlet port. The inlet port is in flow communication with a gaseous fuel supply and the outlet is in flow communication with an intake to the internal combustion engine. The speed of the rotation of the rotor is adjustable to vary the amount of gaseous fuel presented to the engine for selectively varying the output of the engine.

Abstract: A hydraulically powered mixing aerator rides on an upright beam member for submersion in a body of water such as an equalization basin, oxidation ditch or sludge holding tank used in sewage treatment plants. The aerator employs a submersible, hydraulically powered mixing motor driving a propeller which is mounted on the beam member by a slidable bracket for height adjustment. The beam member is swingably supported to allow adjustment of the vertical plane angle. Because the beam member is also mounted for rotation, substantially any attitude or position of the mixer can be selected for creating an efficient flow pattern within the body of water. The speed at which the propeller is rotated, and therefore, the rate at which the water is circulated and aerated, is selectively adjustable. The hydraulically driven motor provides for a low speed and high torque rotation of the propeller without the use of a reduction gear.

Abstract: An adjustable bar lock for use between an abutment member and a slidable member. The bar lock includes a base attached to the abutment member and an adjustable bar comprising a rigid first link pivotally attached to the base and telescopically connected to a rigid second link. The second link has a free end adapted for abutting the slidable member with the bar in a locked position. A retainer clip adapted for attachment to the abutment member is provided for releasably securing the adjustable bar in a pass position, whereby the slidable member may be moved from a closed to an open location. The adjustable bar is foldable between the locked and the pass positions.

Abstract: An ink pump adapted for use with a rotary printing press comprising four pump bodies each having individual pumping units. The pumping units include a plunger shaft which rotates and reciprocates within a sleeve having an inlet and an outlet port. The shaft includes a cut-out portion which comprises a piston surface for pumping the ink upon the reciprocation of the shaft. A sliding shoe is eccentrically positioned relative to an axis of the shaft and rides upon a movable planar wobble plate angled relative to an axis of the shaft, providing the impetus for the reciprocating motion of the shaft. When the wobble plate is rotated to a position where it is normal to an axis of the plunger shaft, a zero set adjustment screw contacts the shaft axially, prohibiting the shaft from contacting the wobble plate and reciprocating.

Abstract: An adjustable carriage for mounting a measurement bar to a selected vehicle frame or body having locations corresponding to measurement points utilizes a carriage block sleeved about and slidably embracing the bar and has a clamp to secure the block at a selected location. An adjustable arm is mounted on the carriage block and has a socket affixing connectors which mount the bar from the vehicle. The arm is shiftable angularly to enable connection to the body at the proper points even though the points may be coarsely misaligned or deformed through damage.