Of Opposite Hand Patents (Class 198/669)
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Patent number: 11964433Abstract: A build material conveyor is disclosed. Such conveyor comprising an auger to transport build material in a substantially vertical direction wherein the conveyor further comprises a set of wall elements selectively positioned to, in a first position occupy part of the volume of the auger.Type: GrantFiled: January 23, 2023Date of Patent: April 23, 2024Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Stan Markwell, Andre Garcia, Bernardo A Gutierrez, Joan Mach Beneyto
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Patent number: 11925143Abstract: A header of a combine harvester includes a belt conveyor configured to direct a movement of harvested crop material toward a feederhouse of the combine harvester. The belt conveyor is located adjacent an inlet of the feederhouse. The belt conveyor includes at least one protrusion extending radially from the belt conveyor that helps direct movement of harvested crop material toward the feederhouse.Type: GrantFiled: May 25, 2022Date of Patent: March 12, 2024Assignee: CNH Industrial America LLCInventors: Herbert M Farley, Joseph Neil Oberlander, Dan Lawrence Garland, Mark D. Dilts
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Patent number: 11846084Abstract: A yard leveling and conditioning apparatus has a rectangular frame. The frame has a plurality of forward mounted V-shaped knives attached to a forward portion of the frame, and a plurality of rearward mounted V-shaped knives attached to a rearward portion of the frame. The plurality of forward and rearward mounted V-shaped knives project downward when in an engagement position. The apparatus has a first side wheel mounted to a first side of the frame and a second side wheel mounted to a second side of the frame. A third wheel is mounted to the rearward portion of the frame. A tongue is rotatably attached to the forward portion of the frame and is configured for attachment to a pulling source. The first, second and third wheels are configured to project in an upward orientation when in the engagement position and do not touch the ground in the engagement position.Type: GrantFiled: October 12, 2021Date of Patent: December 19, 2023Inventor: Francis C Lebeda
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Patent number: 11058060Abstract: A draper header is attached to a harvesting machine by an adapter including a bottom feed draper and an upper feed roller driven by a coupling from an output of the machine rotatable about an axis parallel to the forward direction and a right angle gearbox. The feed roller is mounted at each end allowing independent up and down floating movement of the ends and there is provided a mechanical linkage using two chains and an idler shaft between the output shaft of the gear box an input shaft of the roller with a universal coupling therebetween. The gear box is located at least partly underneath the discharge opening and underneath the feed roller, rearwardly of the rear guide roller of the feed draper, rearwardly of the axis of rotation of the feed roller and underneath a feed pan which is inclined upwardly and rearwardly over the gear box.Type: GrantFiled: March 27, 2019Date of Patent: July 13, 2021Assignee: MacDon Industries Ltd.Inventors: Neil Barnett, Scott Dietsche
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Patent number: 10349580Abstract: A draper header is attached to a harvesting machine by an adapter including a bottom feed draper and an upper feed roller driven by a coupling from an output of the machine rotatable about an axis parallel to the forward direction and a right angle gearbox. The feed roller is mounted at each end allowing independent up and down floating movement of the ends and there is provided a mechanical linkage using two chains and an idler shaft between the output shaft of the gear box an input shaft of the roller with a universal coupling therebetween. The gear box is located at least partly underneath the discharge opening and underneath the feed roller, rearwardly of the rear guide roller of the feed draper, rearwardly of the axis of rotation of the feed roller and underneath a feed pan which is inclined upwardly and rearwardly over the gear box.Type: GrantFiled: July 6, 2017Date of Patent: July 16, 2019Assignee: Mac Don Industries Ltd.Inventors: Neil Barnett, Scott Dietsche
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Patent number: 10028438Abstract: A pickup unit for an agricultural baler. The pickup unit includes a frame; a pickup roll carried by the frame; and a windrow conditioning roll carried by the frame and positioned in front of the pickup roll when in an operating position. The windrow conditioning roll includes a center core and a pair of counter-rotating flightings surrounding the center core. The counter-rotating flightings are connected together in a manner such that wrapping of crop material around the windrow conditioning roll is inhibited.Type: GrantFiled: April 1, 2016Date of Patent: July 24, 2018Assignee: CNH Industrial America LLCInventors: Wouter Boone, Danny Claeys
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Patent number: 9682646Abstract: The invention comprises a chassis rail comprising an elongate frame member having a first end for mounting a head pulley and a second end for mounting a tail pulley; a first plurality of spaced-apart apertures to allow visual inspection of a plurality of bed rollers; and a second plurality of spaced-apart apertures to allow visual inspection of a plurality of return rollers.Type: GrantFiled: August 21, 2015Date of Patent: June 20, 2017Inventor: Richard George Hazelton
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Patent number: 9121164Abstract: A bucket for a skid loader has a screw auger with right-hand and left-hand auger fighting which meet in the center on a single shaft. Rotation of the shaft in one direction causes sand or other granular material in the bucket to move toward the end outlets for loading into conventional sandbags. Rotation of the shaft in the opposite direction advances the material in the bucket to the center where it is discharged through a bottom outlet into a bulk bag such as an FIBC bag which is supported on tubes suspended from the bucket on lines. A cover is releasably attached to the bucket to block the bottom outlet when a bulk bag is not being filled.Type: GrantFiled: April 24, 2014Date of Patent: September 1, 2015Inventor: Stacey A. Babiarz
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Publication number: 20140075906Abstract: An auger conveyor (104) is provided for a row crop harvesting head (100) that has a hinged frame (102). The auger conveyor (104) has a first section (122) that is coupled to a second section (120, 124) with a universal joint (130).Type: ApplicationFiled: September 12, 2013Publication date: March 20, 2014Inventors: DANIEL M. HEIM, MICHAEL L. VANDEVEN
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Publication number: 20120201573Abstract: A stir-transport member is formed on a circumferential surface of a rotation shaft with a first spiral blade, and a second spiral blade formed to overlap the region of the first spiral blade and is opposite the first spiral blade in phase and having a smaller radial-direction height than the first spiral blade. Sections of the spiral blades along the cross longitudinal direction thereof have trapezoidal shapes. The first spiral blade have a plurality of first swell portions, a part of each corresponding to a bottom of the trapezoidal shape and is more swollen than the other portions. The second spiral blade have a plurality of second swell portions, a part of each corresponding to the bottom of the trapezoidal shape and is more swollen than the other portions. The first spiral blade cross the second spiral blade at least at one of the first swell portions per turn.Type: ApplicationFiled: February 7, 2012Publication date: August 9, 2012Applicant: KYOCERA MITA CORPORATIONInventors: Akihiro WATANABE, Norio KUBO, Yukihiro MORI
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Patent number: 7975834Abstract: A device for transferring sausage-shaped products, carried out of a clipping machine and provided with loop-shaped suspension elements, to a product receiving element, said device containing: a guide bar along which the suspension elements can be guided in the direction of transport by means of conveyor elements, and a front and a rear bearing assembly for the guide bar, the bearing assemblies having a right-hand and a left-hand bearing unit that are each disposed in pairs laterally from the guide bar. It is further provided that the front and rear bearing assemblies form drivable positive guidance mechanisms for the suspension elements.Type: GrantFiled: August 20, 2009Date of Patent: July 12, 2011Assignee: Poly-clip System GmbH & Co. KGInventor: Günter Kessler
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Patent number: 7975833Abstract: A material handling system for moving material from a storage device to a receiver comprises a counter rotating double screw feeder extending from the storage device to the receiver. The counter rotating double screw feeder comprises an outer screw feed member; an inner screw feed member; where the outer screw feed member being positioned in an outer screw feed member tube; and the inner screw feed member being positioned in an inner screw feed member tube. The material is feed from the storage device to the process tube via the outer screw feed member; the inner screw feed member removes gas and byproducts from the receiver.Type: GrantFiled: July 15, 2008Date of Patent: July 12, 2011Assignee: General Electric CompanyInventors: Ralf Jonczyk, James A Rand
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Publication number: 20100012468Abstract: A material handling system for moving material from a storage device to a receiver comprises a counter rotating double screw feeder extending from the storage device to the receiver. The counter rotating double screw feeder comprises an outer screw feed member; an inner screw feed member; where the outer screw feed member being positioned in an outer screw feed member tube; and the inner screw feed member being positioned in an inner screw feed member tube. The material is feed from the storage device to the process tube via the outer screw feed member; the inner screw feed member removes gas and byproducts from the receiver.Type: ApplicationFiled: July 15, 2008Publication date: January 21, 2010Inventors: Ralf Jonczyk, James A. Rand
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Patent number: 5651321Abstract: In accordance with the present invention, a method for supplying solid material such as hot carbonaceous material from a pyrolyzer or reactor to a furnace, is provided comprising providing a screw conveyor for receiving the solid carbonaceous material from the pyrolyzer or reactor preferably from above the conveyor and transporting it along its length to a vaned rotor preferably positioned on the axle of the screw conveyor preferably substantially near the end of the screw conveyor for supplying the carbonaceous material to the furnace.Type: GrantFiled: January 3, 1996Date of Patent: July 29, 1997Assignee: Ormat Industries Ltd.Inventors: Boris Siniakevith, Mark Khaskin, Daniel Goldman, Benjamin Doron, Lucien Y. Bronicki, Eli Yaffe
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Patent number: 5524796Abstract: A compound screw feeder for uniform volumetric flow rates of particulate solids, suitable for low, nonpulsating feed rates, comprises coaxial inner and outer screw flights. The flights both extend throughout the feeder section and produce a net discharge flow rate dependent on their respective feed directions and rates of feed. Various forms of the feeder may be employed in a loss of weight screw feeder system.Type: GrantFiled: August 24, 1994Date of Patent: June 11, 1996Assignee: Hyer Industries, Inc.Inventor: Frank S. Hyer
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Patent number: 5348162Abstract: A machine for sorting refuse comprises a rotatable drum (1) having several succeeding processing stations (5, 6, 7) located between an inlet (3) and an outlet (4) and each including one or more rotatable shafts (8) the circumferential surfaces of which are equipped with goods-processing projections and which are mounted at openings in the wall of the drum, the processing projections being adapted to cooperate with the edge portions of the drum wall defining the openings, so as to bring about a processing action on goods fed from the inlet towards the outlet. The processing projections of the shafts (8) in a first station (5) most adjacent the inlet (3) are smaller than the corresponding processing projections in the following station (6) in order, in said first station, to separate fine goods, while allowing coarser goods, during the feed of the goods from the inlet towards the outlet along the bottom of the drum, to pass on for separation in a succeeding station or stations.Type: GrantFiled: March 23, 1993Date of Patent: September 20, 1994Inventor: Franz Wroblewski
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Patent number: 5167931Abstract: A method and apparatus of scrubbing acid gas from flue gas comprises slats which define a moving bed of scrubbing material which is capable of reacting with the acid gas to form reaction products on particles of the scrubbing material. Flue gas from a boiler or other sources of flue gas is passed through the moving bed of scrubbing material. The scrubbing material is sprayed with water to the saturation point for increasing the rate of reaction between the reaction gas on the scrubbing material. The scrubbing material leaving the bottom of the moving bed is subjected to a separation step which removes the reaction products as fine dust which is disgarded, and returns the now regenerated particles of scrubbing material to the top of the moving bed.Type: GrantFiled: March 28, 1990Date of Patent: December 1, 1992Assignee: The Babcock & Wilcox CompanyInventor: William Downs
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Patent number: 4899867Abstract: A rotor for an agricultural feed bagger comprising an elongated cylindrical member having first and second sets of rotor teeth mounted therein with the first and second sets being arranged on the cylindrical member in opposing helical fashions. First and second sets of auxiliary rotor teeth are mounted on the cylindrical member within the helical patterns defined by the first and second sets of rotor teeth so that silage material delivered to the center of the rotor will be subjected to a greater number of rotor teeth than silage delivered to the ends of the rotor.Type: GrantFiled: January 25, 1988Date of Patent: February 13, 1990Inventor: Kelly P. Ryan
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Patent number: 4884724Abstract: This screw auger chemical applicator is designed to evenly and non-cloggingly feed chemical or small seed onto a ground surface. Primarily, it consists of a pulley and belt train driven by a wheel in engagement with a trailing wheel of a pair of wheels mounted to a towed frame behind a farm tractor, and the pulley and belt train drives a left and right pitched auger beneath each hopper of the applicator, for even feed from a pair of discharge openings in the hopper. A by-pass tube is also provided beneath the auger portion, for preventing compacting of the chemical or seed that could cause malfunction.Type: GrantFiled: August 26, 1988Date of Patent: December 5, 1989Inventor: La Vern Schmidt
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Patent number: 4881862Abstract: A screw seal for conveying bulk particulate solids between spaces at differing gas pressures with minimal leakage of gas. A tubular housing encloses a screw conveyor section and a sealing section receiving the solids and forming a sealing plug. The sealing section has a divergent configuration that functions in combination with friction to create sufficient solids pressure with minimal driving torque and wear on the screw conveyor.Type: GrantFiled: September 30, 1987Date of Patent: November 21, 1989Assignee: Jenike & Johanson, Inc.Inventor: David S. Dick
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Patent number: 4823936Abstract: A hopper for material such as meat or the like includes a material holding cavity having a substantially centrally located discharge opening. A rotatable shaft is provided in the bottom of the hopper. The shaft is provided with first and second end portions, each of which has spiraled flighting for moving material within the hopper in opposite directions toward the central discharge opening. A disruptor bar is disposed on the central portion of the shaft for intermittently disrupting the concentration of material adjacent the discharge opening and for forcing the material into the discharge opening.Type: GrantFiled: October 15, 1987Date of Patent: April 25, 1989Assignee: Weiler & Co.Inventor: Nick J. Lesar
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Patent number: 4676363Abstract: In order to avoid caking of bulk material when feeding from a feeder into an inlet opening of lesser cross-section, there is provided a trough with a central discharge opening located below the discharge of the feeder. Two double paddle conveyors extend in the trough towards the central discharge opening. A vertical gravity tube joins on the trough. The tube is surrounded by one or several annular channels guiding a gaseous medium. This medium forms a gaseous screen between the bulk material flow and the gravity tube.Type: GrantFiled: July 31, 1985Date of Patent: June 30, 1987Assignee: Deutsche Babcock Werke AktiengesellschaftInventors: Horst Buchmuller, Helmut Benninghoff
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Patent number: 4597510Abstract: An improved feed screw impeller apparatus primarily for use in an impeller bag packing system that is especially suited for filling bags with finely divided and aerated powders. The apparatus comprises an elongated cylindrical shaft having impeller blades extending radially therefrom at about the midpoint thereof and a plurality of feed screw flights of generally helical configuration, at least two such flights connected to said shaft on each side of the impeller blades in substantial coaxial alignment with the shaft. In one alternative embodiment of the invention there are four impeller blades and four helical feed screw flights, two on each side of the impeller blades and each terminating along an edge extending in substantial alignment with a different impeller blade. Another version of the novel impeller is employed in a packing machine also having a novel pre-conditioning hopper.Type: GrantFiled: March 2, 1984Date of Patent: July 1, 1986Assignee: Westmont, Inc.Inventor: Will G. Durant
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Patent number: 4455111Abstract: In a system for moving large quantities of pulverulent material from receiving hoppers, such as those of a fly ash precipitator, into a pressurized air conveyor pipeline, separate auger conveyors move material from a first line of receiving hoppers and from a second line of receiving hoppers downstream into gravity material inlets at opposite ends of an effectively airtight pressure conveyor casing. In the casing auger conveyor flights of opposite hand and substantially smaller than the casing means it toward a central outlet through which it drops into the pressurized air conveyor pipeline. Above the outlet the auger conveyor shaft has radial material agitating rods. The system is cycled to alternately feed material into the pressure conveyor casing at receiving hopper pressure, which is about atmospheric pressure, and out of the pressure conveyor casing at pipeline pressure.Type: GrantFiled: June 29, 1981Date of Patent: June 19, 1984Assignee: United Conveyor CorporationInventors: Carroll V. Jackson, Hazelton H. Avery
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Patent number: 4428707Abstract: A device for unrolling a round bale of hay when being discharged upon the ground from a hay carrying vehicle, said device including a mechanism in which a plurality of rollers form a cradle upon which the hay bale is rested, the rollers being power rotated so as to unroll the hay bale as it sits in the cradle so that a mat of hay is spread on the ground.Type: GrantFiled: November 20, 1981Date of Patent: January 31, 1984Inventors: Richard A. Cockle, George Spector
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Patent number: 4363571Abstract: A system for moving large quantities of pulverulent material from receiving hoppers, such as those of a fly ash precipitator, into a pressurized air conveyor pipeline. Separate auger conveyors move material from a first line of receiving hoppers and from a second line of receiving hoppers into gravity material inlets at opposite ends of an effectively airtight casing of a pressure mechanical conveyor wherein auger conveyor screws of opposite hand move it toward a central outlet through which it drops into the pressurized air conveyor pipeline. The auger conveyors and the pressure conveyor augers operate continuously; and the system is cycled to alternately feed material into the pressure conveyor casing at receiving hopper pressure, which is about atmospheric pressure, and out of the pressure conveyor casing at pipeline pressure. The cycles of two or more pressure conveyors are out of phase with one another so they feed material into the pipeline consecutively to provide level pipeline flow.Type: GrantFiled: June 10, 1981Date of Patent: December 14, 1982Assignee: United Conveyor CorporationInventors: Carroll V. Jackson, Blase C. Rau
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Patent number: 4343394Abstract: Apparatus for pumping or conveying fluent material such as grain, sand, concrete, etc. is disclosed. The apparatus comprises a tube having an inlet at one end and an outlet spaced from the inlet and a pair of helical blades of opposite pitch mounted inside the tube for rotation relative to one another. One blade is mounted to a shaft extending axially inside the tube, and the other blade is mounted to the inside of the tube. The blades are interrupted at diametrical locations to enable the blades to move relative to one another as the shaft rotates relative to the tube for conveying fluent material. Preferably, the assembly is mounted with its inlet in a hopper and its tube disposed upright to afford vertical conveyance of the fluent material through substantial distances.Type: GrantFiled: June 23, 1980Date of Patent: August 10, 1982Assignee: Addare Corp.Inventors: Joseph W. Emmert, Lawrence J. Sweeney
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Patent number: 4313705Abstract: A device for unloading particulate material from circular storage bins having central discharge sumps. The device includes two augers extending radially in diametric opposition from a vertical pivot axis adjacent the discharge sump. The augers are powered to pivot forwardly about the vertical axis and are also rotated about longitudinal auger axes to engage and move particulate material toward the vertical axis and into the central outlet sump. A central counter rotating auger drive means is powered to rotate the augers in opposite directions. The counter rotating drive means includes a single input drive shaft. The single input shaft rotates two worm gears of a transmission means. Two worm wheels, each attached to a respective auger, mesh with the worm gears. The worm gears and worm wheels function as gear reduction units to transmit rotation of the input shaft to opposite geared down directional rotation of the augers. The single input drive shaft is also operatively connected to a hydraulic motor.Type: GrantFiled: January 26, 1979Date of Patent: February 2, 1982Inventor: William J. Jackson
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Patent number: 4192417Abstract: A bottom-belt bunker which receives and delivers particles for the manufacture of fiberboards, chipboards, or the like, and containing cellulose, is disposed upstream of a glue applicator or a front of a forming station. A centrally located feed opening is associated with a drivable auger disposed transverse to the longitudinal extension of the bunker. The auger has a pair of opposed helical blades or flights. A shoveling slide having an adjustable stroke is disposed beneath the auger and partially encompasses the same, the length of the slide being smaller than half the width of the bunker and/or half the length of the auger. Terminal positions of the reciprocating slide are disposed at a spacing from the side of the bunker and the average moving speed of the slide is approximately half that of the velocity of the helical blades of the auger.Type: GrantFiled: June 25, 1976Date of Patent: March 11, 1980Assignee: Bison-Werke Bahre and Greten GmbH and Co. KGInventor: Berndt Greten
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Patent number: 4180155Abstract: The invention pertains to a pulley for belt conveyors, particularly belt conveyors used in the conveying of stones, gravel, and the like wherein the pulley structure is self-cleaning of foreign matter received within the confines of the pulley to prevent belt damage. The pulley consists of a plurality of helically disposed webs spiralled about a rotatable shaft. A plurality of webs are defined upon the shaft on each side of the pulley central region wherein at least two separate webs define a set of multiple pitch helices, and each set is spiralled about the axis of rotation in an opposite direction wherein foreign matter received between the webs is moved to the pulley ends in a self-cleaning manner. A disc is utilized at the pulley central region to which the inner ends of the web sets are affixed and the periphery of the webs is of a greater axial dimension than the web plate to increase the belt surface loading area.Type: GrantFiled: March 13, 1978Date of Patent: December 25, 1979Assignee: Industrial Service & Manufacturing Co.Inventor: Ronald A. Stevick
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Patent number: 4177626Abstract: Crop gathering table for a combine has an auger to move crop laterally inwards towards the center of the table. The auger has a central shaft carrying helical flights, and discharge fingers to discharge crop through an opening in the rear of the table. A series of crop feeding plates mounted on the auger and extending lengthwise of it between portions of the helical flights, promote smooth flow of crop below the auger shaft.Type: GrantFiled: April 17, 1978Date of Patent: December 11, 1979Assignee: Massey-Ferguson Services N.V.Inventor: James B. McNaught
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Patent number: 4140214Abstract: At least one pair of vertically superimposed conveyors are located in the bottom region of a bunker in order to discharge the bulk material. The conveyors are spaced apart to create a void or at least a loosened zone free from horizontal pressures in the bulk material between the conveyors. The void prevents the bulk material from bridging over so that gravity flow is not impeded.Type: GrantFiled: April 11, 1977Date of Patent: February 20, 1979Assignee: Sulzer Brothers LimitedInventor: Maurus Pellhammer
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Patent number: 4109966Abstract: Apparatus for conveying solid particulate material including a casing having bore therethrough and an inlet for material to be conveyed and an outlet. A screw impeller is rotatably mounted in the casing by front and rear bearings with the rear bearing being near the inlet. The outlet is intermediate the inlet and the forward bearing. A discharge chamber is flow connected immediately adjacent the casing outlet. Nozzles for supplying gas under pressure are provided in the discharge chamber for discharging material from the discharge chamber into and through a pneumatic conveying line. The screw impeller includes a feed screw section which terminates adjacent the casing outlet and a reversing section with reverse flights between the forward bearing and the casing outlet to prevent material from entering the forward bearing. A restriction plate may be placed in the casing outlet to reduce the size of the outlet opening to less than the bore through the casing.Type: GrantFiled: November 23, 1976Date of Patent: August 29, 1978Assignee: Fuller CompanyInventors: Donald S. Boyhont, Paul E. Solt
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Patent number: 4089300Abstract: Auger assembly for use in feed dispensing hoppers comprising in combination an elongate housing member with feed dispensing openings on the underside thereof, web portions extending above the dispensing openings, feed admitting cutouts longitudinally spaced from the openings and on the upper side of the housing member; at least one drive shaft disposed in the housing member and extending the full length thereof; a multi-sectional auger device having a bore disposed around the drive shaft and secured thereto for rotation therewith. Each section of the auger device is adapted to convey feed into the space under a web portion of the housing member and dispense feed out through a dispensing opening.Type: GrantFiled: March 14, 1977Date of Patent: May 16, 1978Assignee: Diamond International CorporationInventors: Everett M. Keen, Anthony J. Siciliano
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Patent number: 4072238Abstract: A self-unloading ship includes two longitudinal tunnels with conveyor belts below two rows of hoppers at the bottom of the holds which extend nearly from one end of the ship to the other for unloading bulk material such as coal, iron ore, gypsum or the like. During unloading, the hopper gates are opened and the bulk material on the starboard and port sides of the cargo holds flows by gravity through the open hoppers onto the tunnel belts. A central ridge of bulk material remaining on the bottom floor of the holds between the two rows of hoppers is moved to the hoppers by a wheeled reclaimer having oppositely pitched augers which split the central ridge of bulk material, moving one half to the starboard row of hoppers and one half to the port row of hoppers. The reclaimer includes a power driven, endless chain harrow which drags down the central ridge of bulk material to prevent avalanching and an endless belt brush for cleaning the hold floors between the two rows of hoppers.Type: GrantFiled: November 24, 1976Date of Patent: February 7, 1978Assignee: Allis-Chalmers CorporationInventor: Warren R. Vaughan
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Patent number: 4003191Abstract: A harvesting header for a combine in which a consolidating auger of appreciable length extends transversely to the longitudinal axis of the combine and said auger having reversely spiralled flights respectively extending inward from opposite ends of the auger toward the midpoint of the axis thereof, the improvement comprising barrier means in the form of one or more discs on said auger between the inner ends of said flights and operable to prevent any substantial movement of ears of corn along the auger trough past the center of the auger when the combine is operating on a sloping field area.Type: GrantFiled: March 29, 1976Date of Patent: January 18, 1977Assignee: Sperry Rand CorporationInventors: Robert R. Todd, Thomas W. Taege