Specific Material Patents (Class 172/747)
  • Patent number: 9493992
    Abstract: A cutting device includes, at least one stack of cutting elements attached to a cutter surface having, a first element and a second element attached to the cutter surface. A third element is attached to the first element and the second element. The three elements are sized and shaped such that prior to attachment to the cutter surface the three elements are restable in a stable manner on the cutter surface due to gravity alone. A plane-defined-surface defined by one of the two planes of a modified gilmoid of the third element positioned further from the cutter surface is oriented at an angle of about 35 to 55 degrees relative to the cutter surface.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: November 15, 2016
    Assignee: BAKER HUGHES INCORPORATED
    Inventors: Calvin J. Stowe, II, Andrew D. Ponder
  • Publication number: 20150096774
    Abstract: I being, in the business of farm implement and tractor repair, have come to realize that sometimes repairing old equipment is difficult and more costly than just replacing with a new part or a complete implement. I found this particularly true with the cultipacker, after having several customers ask for repairs on old ones and having problems repairing them due to lack of reliable wheels. I decided to see if I could come up with a product to solve the problem. After about five years of research, trial and error I finally came up with what I consider an excellent solution to the problem The Carbon Steel Cultipacker Wheel. Since my invention of the wheel I have sold many steel wheel cultipackers and have happy customers.
    Type: Application
    Filed: October 5, 2013
    Publication date: April 9, 2015
    Inventor: Shawn Lamar Edwards
  • Publication number: 20120267133
    Abstract: A plow blade kit comprising a first plow blade section, a second plow blade section, a connector plate for connecting the first and second plow blade sections together in an end-to-end manner, a first wear bar, a second wear bar, a push tube assembly, mounting components for securing the forward end of the push tube assembly to the rearward sides of the first and second plow blade sections, and a mount for securing the rearward end of the push tube assembly to an off-road vehicle.
    Type: Application
    Filed: April 21, 2011
    Publication date: October 25, 2012
    Inventor: Curt J. Hill
  • Publication number: 20100326680
    Abstract: The present invention is directed to an earth leveling and moving apparatus designed to move and level dirt and is compact for getting into tight areas that are needed to be reached for landscaping and other similar purposes. The apparatus includes a handle assembly, a blade assembly, a blade coupled to the blade assembly, a basket, and two wheel assemblies. The handle assembly is connected to the blade assembly which is coupled to the blade. The blade may be removable and may have a straight edge or a ripper edge with teeth for cutting through hard surfaces. The basket is coupled to the handle assembly and to two wheel assemblies. The blade height is determined by adjusting the wheel assemblies and varying the force used on the handle assembly. The basket may have materials for weight in order to aid in applying a downward force to cut or gouge the land and level the land as the user desires. The basket may also be used to move debris and materials around the worksite.
    Type: Application
    Filed: June 26, 2009
    Publication date: December 30, 2010
    Inventors: Neal Sundhagen, Shanon Sundhagen
  • Publication number: 20100051301
    Abstract: A motor grader is disclosed having a coated wear insert.
    Type: Application
    Filed: March 10, 2008
    Publication date: March 4, 2010
    Applicant: DEERE & COMPANY
    Inventors: Dustin Thomas Staade, Lawrence William Bergquist
  • Patent number: 6945332
    Abstract: A highly durable aeration tine device attached to a soil aerator has a tubular tine member extending cylindrically and a hard metal tip made of a hard metal material and typically made in a frustum shape of a cone, which is in an area contact with the tubular tine member between the surfaces of the tubular tine member and the hard metal tip. Each surface of the tubular tine member and the hard metal tip is extending in a plane perpendicular to the axial direction and can be fabricated easily, and the drive force provided from the soil aerator can be transmitted without loss.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: September 20, 2005
    Assignee: Kashiwatool Corporation
    Inventor: Kenji Uehara
  • Patent number: 6874260
    Abstract: The invention comprises a snow plow system capable of attachment to a vehicle. The snow plow system comprises a front snow plow assembly and a rear snow plow assembly. The front snow plow assembly includes a blade, a frame assembly and an attachment system. The attachment system is capable of attaching the blade to the frame assembly. The rear snow plow assembly includes a frame and a blade attached. The frame of the front snow plow assembly and the frame of the rear snow plow assembly comprise an aluminum material having a temper of at least T4.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: April 5, 2005
    Assignee: Covenant Resolutions, Inc.
    Inventor: Donald Edward Mullett
  • Patent number: 6854527
    Abstract: The present invention provides for carbide edge snowplow and grader blades that are durable and fracture resistant. The carbide along the blade edge and blade bottom which contacts the surface being treated is designed to limit the degree of fracture of the carbide. Carbide inserts along the edge and/or bottom are separated from each other by a steel alloy spacer/shim along the width of the blade. The spacer/shim reduces the potential for impact damage cracks that form in a carbide insert from propagating into adjacent inserts along the width of the blade. In one embodiment, the improved blade edge comprises an edge body having a lower edge with a recess and separate slot in the bottom surface of the edge. Within the blade recess and blade slot are positioned carbide block/bar inserts separated by spacer means made from a ductile material.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: February 15, 2005
    Assignee: Kennametal Inc.
    Inventors: Terry A. Manway, Andrew G. Mayer, Daniel C. Statler, Charles P. Baldwin
  • Patent number: 6745709
    Abstract: A ground engaging tip for a seed boot attachment for depositing a seed within a furrow. The tip including a conical shape member formed of three generally planar shape side surfaces wherein two of the side surfaces meet to form an inclined leading edge extending from a tip of the conical shape member; and at least one wear resistant insert. The insert is secured to the leading edge of the ground engaging tip and includes a generally elongated bar having a leading end, a trailing end and three connecting side surfaces, a first side, second side and third side. The first, second and third side surfaces form a bar having a generally triangular cross-section, wherein the leading end of the bar is angled.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: June 8, 2004
    Assignees: Kennametal Inc., GEN Manufacturing Ltd.
    Inventors: Don C. Rowlett, Henry J. Bergen, David H. Bergen
  • Publication number: 20030221600
    Abstract: A ground engaging tip for a seed boot attachment for depositing a seed within a furrow. The tip including a conical shape member formed of three generally planar shape side surfaces wherein two of the side surfaces meet to form an inclined leading edge extending from a tip of the conical shape member; and at least one wear resistant insert. The insert is secured to the leading edge of the ground engaging tip and includes a generally elongated bar having a leading end, a trailing end and three connecting side surfaces, a first side, second side and third side. The first, second and third side surfaces form a bar having a generally triangular cross-section, wherein the leading end of the bar is angled.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 4, 2003
    Inventors: Don C. Rowlett, Henry J. Bergen, David H. Bergen
  • Publication number: 20030188463
    Abstract: The present invention provides for carbide edge snowplow and grader blades that are durable and fracture resistant. The carbide along the blade edge and blade bottom which contacts the surface being treated is designed to limit the degree of fracture of the carbide. Carbide inserts along the edge and/or bottom are separated from each other by a steel alloy spacer/shim along the width of the blade. The spacer/shim reduces the potential for impact damage cracks that form in a carbide insert from propagating into adjacent inserts along the width of the blade. In one embodiment, the improved blade edge comprises an edge body having a lower edge with a recess and separate slot in the bottom surface of the edge. Within the blade recess and blade slot are positioned carbide block/bar inserts separated by spacer means made from a ductile material.
    Type: Application
    Filed: April 8, 2002
    Publication date: October 9, 2003
    Inventors: Terry A. Manway, Andrew G. Mayer, Daniel C. Statler, Charles P. Baldwin
  • Patent number: 6571493
    Abstract: A cutting edge which has improved resistance to scratching wear, such resistance being required for cutting edges for snow removal, which has good performance to increase e.g., compressed snow rate, and which can be manufactured at comparatively low cost. The cutting edge comprises a hard member provided at the leading edge of an edge body, the hard member comprising (i) a hard material containing hard grains which are dispersed with high filling density and integrally combined by a metal having a lower melting point than the hard grains and (ii) a protective member which covers at least the front face of the hard material as viewed in the travel direction of the blade and which has impact resistance.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: June 3, 2003
    Assignee: Komatsu Ltd.
    Inventors: Masaharu Amano, Takanori Nagata, Kazuhide Okawa
  • Patent number: 6457269
    Abstract: The invention relates to a ground-engaging tool which is connected or connectable to a lip on an excavation bucket. The ground-engaging tool includes a tool body which is formed from a material having a hardness of approximately 40 Rockwell C hardness and which defines a contact surface at one end for receiving impacts in use. Extending through a substantial portion of the tool body from the contact surface is a hardened core formed from a material having a hardness which is at least 20% greater than the hardness of the material of the tool body for transferring impacts through the tool body.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: October 1, 2002
    Assignee: Caterpillar Sarl
    Inventors: Schalk Willem Petrus Esterhuyse, Louw Kriel
  • Patent number: 6382328
    Abstract: A ground working implement formed from a hard substrate material such as steel has a forward facing ground cutting edge. A wear resistant coating (59, 63) such as polyurethane is applied to at least one face of the implement. The coating adjacent the cutting edge may have a cut (66), trench or line of weakness formed in it substantially parallel to the cutting edge. The implement may be a cultivator tillage point having a generally triangular shaped working portion with a nose (56) and a pair of wings swept back therefrom, with the leading edge of the nose and wings forming a cutting edge. The metal at the rear of the nose portion is stepped (58) in order to protect the leading edge of the plastics material immediately behind the nose.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: May 7, 2002
    Assignee: Stealthcorp Technologies Pty. Ltd.
    Inventor: John Beyer
  • Patent number: 5787994
    Abstract: An opener assembly for forming a groove in soil in preparation for placement of substances in the soil broadly comprises an upright, elongated shank having a lower end and a lower mounting edge, a lowermost, groove-forming component, and fastening structure for fastening the component to the lower end of the shank. The component includes an upper mounting surface, and is configured to be seated against the lower mounting edge of the shank. The lower edge of the shank includes a pair of angularly disposed edge portions arranged to receive thrust loads in different directions from the component during groove-forming movement of the component through the soil. One of the edge portions lies at least partially in a normally horizontal plane for preventing upward movement of the component relative to the shank while the other of the edge portions lies at least partially in a normally vertical plane for preventing rearward movement of the component relative to the shank.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: August 4, 1998
    Assignee: Acra Products, L.L.C.
    Inventor: Randall M. Friesen
  • Patent number: 5720353
    Abstract: An apparatus for coupling a blade assembly to a vehicle includes a circle assembly having a circle member. The apparatus further includes a plate having a passageway extending therethrough, the circle member being movable relative to the plate. The apparatus also includes a first wear strip positioned within the passageway, the first wear strip being located in contact with the circle member. The apparatus further includes a shim positioned within the passageway, the shim being located in contact with the wear strip. A method for coupling a blade assembly to a vehicle is also disclosed.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: February 24, 1998
    Assignee: Caterpillar Inc.
    Inventor: Kevin J. Wilkening
  • Patent number: 5697308
    Abstract: A seed boot for use with a furrow forming disk of a grain drill for depositing seed within a furrow. The seed boot includes a housing having an inner side, an outer side and a furrow firming edge. The furrow firming edge extends between a lower edge of the inner side and a lower edge of the outer side. The furrow firming edge includes an opening positioned below an axis of the disk and in communication with an internal seed delivery tube that extends the length of the housing. At least one side wear insert is attached to the lower edge of the outer side of the seed boot to prevent side and down force wear of the seed boot.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: December 16, 1997
    Assignee: Kennametal Inc.
    Inventor: Don C. Rowlett
  • Patent number: 5427186
    Abstract: A method for forming a blade adapted to be attached to an earthworking vehicle and the resultant wear resistant blade has a wear surface assembly which includes a carbide insert sandwiched between a steel plate and a composite material within a pocket on the front surface of the blade spaced from the blade cutting edge.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: June 27, 1995
    Assignee: Caterpillar Inc.
    Inventors: Richard L. Adrian, James C. Henehan, Phillip J. Shankwitz
  • Patent number: 5398625
    Abstract: A seed firming wheel assembly is supported in close-coupled relationship with the rear portion of the paired discs of an opener to gently press deposited seeds down into the bottom of a V-shaped trench formed by the discs. The mounting arm of the assembly is configured in a manner to minimize the accumulation of mud and trash residue, while the wheel itself may take the form of a solid, circular block of ultra-high-molecular-weight polyethylene with slick sides to reduce soil adherence or a spoked, molded plastic wheel having open spaces between the spokes to permit soil pass-through.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: March 21, 1995
    Assignee: Great Plains Manufacturing, Incorporated
    Inventors: Eric Johnson, J. Michael McClure, James I. Van Blaricon
  • Patent number: 5375542
    Abstract: A seed covering apparatus for covering seeds with soil after an agricultural seed planter places the seeds within an open seed trench and before the planter closes the seed trench. The apparatus includes a disk with a center guide hole and a sealed bearing attached within the guide hole. An adjustable mounting assembly fixes the sealed bearing to the planter so that the disk can rotate about the bearing along one side of the seed trench. The mounting assembly orients the disk at an acute angle to the seed trench so that rotation of the disk along the side of the trench transfers soil from the side into the bottom of the seed trench. The transferred soil completely covers the seeds within the trench prior to closure of the trench by the planter.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: December 27, 1994
    Inventor: Paul E. Schaffert
  • Patent number: 5314029
    Abstract: A self-sharpening pyramidal shaped insert of a refractory hard metal for use as a leading penetrating element of a soil opener member of an agricultural tool. The insert includes a boss member of a generally frustoconical shape including a circular bottom and outwardly curved side surface extending upwardly from the circular bottom and terminating in a flange, and a penetrating tip having four nonparallel triangular sides, each triangular side having a common leg with a bordering triangular side and a third leg contiguous the flange. The triangular sides converge to a common vertex. The insert inhibits wear of the agricultural tool and contributes to proper soil flow as the agricultural tool cuts a slice in the soil.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: May 24, 1994
    Assignee: Kennametal Inc.
    Inventor: Don C. Rowlett
  • Patent number: 5310009
    Abstract: A cutting insert and a wear insert for use in an agricultural tool having a cutting edge for forming a furrow. The agricultural tool includes an essentially syncline shaped slicer having a leading member, a trailing member and a pair of sides tapered from the trailing member toward a sharp convex cutting edge extending longitudinally upwardly and forwardly from the trailing member toward the leading member. A leading deflector extends upwardly and forwardly from the cutting edge and is formed integral the slicer by a mounting web. The mounting web includes a pair of sides extending rearwardly from the leading deflector and expanding to a heel having first and second sides adjoining respective sides of the syncline shaped slicer and a rear portion. Each of the first and second sides having formed therein a notch and having affixed thereto a wear insert. A cutting insert is secured within a slot along the cutting edge.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: May 10, 1994
    Assignee: Kennametal, Inc.
    Inventor: Don C. Rowlett
  • Patent number: 5297637
    Abstract: An agricultural tool including a disc blade incorporating hard wear resistant inserts for attachment to an axial member of an agricultural tool for rotation through the soil. The disc blade includes parallel spaced flat round front and rear surfaces having a central cylindrical opening. The front surface tapers radially outwardly to the rear surface thereby defining a common outer rim having a knife edge. A plurality of notches are spaced circumferentially along the front surface of the disc blade and inwardly from the outer edge of the front surface of the disc blade. The notches are configured to receive a plurality of hard wear resistant inserts to provide improved wear resistance.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: March 29, 1994
    Assignee: Kennametal Inc.
    Inventor: Don C. Rowlett
  • Patent number: 5224554
    Abstract: A transplanter is disclosed which provides uniform planting without damaging plants. The transplanter includes a mechanism for receiving plants and depositing them in a furrow formed by a unique furrow opening shoe having a polymer outer layer which does not accumulate dirt thereon. A projecting ridge is provided for protecting the layer.
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: July 6, 1993
    Inventor: Howard B. Poll
  • Patent number: 5159985
    Abstract: An insert for use in an agricultural tool having a cutting edge for forming a furrow. The insert includes an elongated wedge having a leading end, a trailing end, a top surface, a first side surface and a second opposing side surface coterminous therewith defining a longitudinally extending lowermost edge. The first and second side surface converge from the trailing end to the leading end and diverge from the lowermost edge to the top surface to form a v-shape leading end. In a preferred embodiment the insert includes a means for aligning the lowermost edge of the insert with the cutting edge of the tool.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: November 3, 1992
    Assignee: Kennametal Inc.
    Inventor: Don C. Rowlett
  • Patent number: 5159887
    Abstract: A transplanter is disclosed which provides uniform planting without damaging plants. The transplanter includes a rotating cup assembly having two-piece clam shell cups, one of which opens by lateral movement by the cup halves of the cup. The transplanter also includes a chute and kick plate which move together to position the plants received from the rotating cup assembly in the planting position. A unique means is provided for opening the cup halves at a position immediately above the chute to minimize any hang-up of the plants. A polymer furrow opening shoe is also disclosed which includes a protective member which prevents soil damage to the polymeric surface. Also novel packing wheels are disclosed.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: November 3, 1992
    Inventor: Howard B. Poll
  • Patent number: 5076180
    Abstract: A trash clearing brush unit for use ahead of a planter unit including a pair of circular brushes rotatably mounted to a vertical support bar and angularly inclined toward one another. The support bar is attachable to a planter unit and vertically adjustable with respect thereto.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: December 31, 1991
    Assignee: Yetter Manufacture Company
    Inventor: John T. Schneider
  • Patent number: 4932475
    Abstract: This invention relates to a blade plough suitable for use on undulating ground. The blade plough has a floating blade which is able to pivot irrespective of the drawbar attachment to the tractor. A spring mechanism is provided to bias the blade in an operative attitude and thereby compensate for varying soil conditions. The blade also comprises an improved cutting edge having a hard laminate on its underside. Blade extension members are provided for varying the operating width of the blade.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: June 12, 1990
    Inventor: Barry F. Homan
  • Patent number: 4911249
    Abstract: A soil-working tine has a recess extending along its wearing edge. The recess captures some soil as the tine passes through the soil. The soil captured in the recess acts as a wearing edge, reducing wear on the material of the tine.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: March 27, 1990
    Assignee: Ticonderoga Pty. Ltd.
    Inventor: Ian A. Mitchell
  • Patent number: 4883129
    Abstract: Ground engaging bits used in abrasive road grading applications utilizing carbide inserts brazed to the leading face of the steel tip are beneficial on motor grader blades. Commercial road grading bit assemblies used consistent thickness, rectangular carbide inserts brazed to the leading edge of the steel tip. Due to wear and high residual stresses imparted upon the insert from the brazing operation, premature cracking and breaking of the carbide inserts occur. The subject bit arrangement utilizes a carbide insert with a flat rectangular cutting face of non-constant thickness brazed to a leading edge of a steel body. The carbide insert has a thickness that increases from the top of the carbide insert and reaches a maximum at the bottom of the steel body, where bit wear is the greatest. The increasing thickness of the carbide tip extends bit life over the current rectangular design and allows for a more efficient and economical use of the carbide.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: November 28, 1989
    Assignee: Caterpillar Inc.
    Inventors: Alan H. Lonn, Daniel W. Nelson
  • Patent number: 4869328
    Abstract: A chisel plow point consisting of a unitary tip section, a tip extender portion extending in the direction opposite to that of the tip section and conforming to and adapted to overlie the end section of a moldboard to present a working surface that turns and throws the soil during the plowing operation, whereby the moldboard is protected against wearing engagement with the soil, a recess behind the extender portion shaped to receive an end section of the moldboard, and an adapter for attachment of the plow point to the plow frame. The tip extender is approximately equal in length to the length of the tip section, is thinner in cross-section than the tip section and has a generally concave configuration to conform with the plow moldboard.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: September 26, 1989
    Inventor: John M. Carroll
  • Patent number: 4845866
    Abstract: An improved blade for a snow plow is provided. The blade includes an inwardly curved, polyethylene moldboard which is secured in a prestressed and arcuate relationship to a structural frame. The frame includes inwardly curved, vertically extending, transversely spaced brace members and a defined space of predetermined shape exists between the moldboard and the braces for improved snow removal by the blade.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: July 11, 1989
    Assignee: The Louis Berkman Company
    Inventor: James C. Ciula
  • Patent number: 4823884
    Abstract: The problem of having dirt and debris stick to the shank of a subsoil plow is solved by providing a non-stick cover body that attaches to a lower portion of the shank and is sized and configured and of a material to which dirt and debris will not adhere. Fasteners in the form of staples insert into holes in laterally spaced tail edge portions is provided. The body is made of a sheet of ultra high molecular weight-polyethylene that is sized, and then bent around a mandril, heated, then cooled and machined as required to be generally complementary with the shape of the lower portion of the shank to which the body is fastened.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: April 25, 1989
    Inventor: Keith H. McCall
  • Patent number: 4813491
    Abstract: A tillage point for attachment to an excavating or earthmoving apparatus includes a tapered point extending below its longitudinal axis and formed by a convex top surface and concave bottom surface when viewed in side elevation. A convex protuberance axially extending along the bottom surface, combined with the tapered point permits enhanced soil penetration with reduced drag and friction.
    Type: Grant
    Filed: July 28, 1987
    Date of Patent: March 21, 1989
    Assignee: James C. Vail
    Inventor: Dennis M. Gross
  • Patent number: 4803790
    Abstract: An improved blade for a snow plow is provided. The blade includes an inwardly curved, polyethylene moldboard which is secured in a prestressed and arcuate relationship to a structural frame. The frame includes inwardly curved, vertically extending, transversely spaced brace members and a defined space of predetermined shape exists between the moldboard and the braces for improved snow removal by the blade.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: February 14, 1989
    Assignee: The Louis Berkman Company
    Inventor: James C. Ciula
  • Patent number: 4770253
    Abstract: A grader blade has a steel body with a bottom edge incorporating a pair of tiered, elongated carbide inserts in a forward portion thereof. The carbide inserts, being arranged in a tiered contacting relationship, are disposed in a stepped recess formed in and along the forward portion of the bottom edge of the blade body and brazed to the blade body and to each other so as to project forwardly and downwardly from the recess. A front one of the tiered inserts is composed of a cemented carbide composition having a high cobalt content, for instance 20 percent by weight, adapting it for enhanced impact wear resistance, whereas a rear one of the tiered inserts is composed of a cemented carbide composition having a low cobalt content, for instance 11.5 percent by weight, adapting it for enhanced downpressure wear resistance.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: September 13, 1988
    Assignee: Kennametal Inc.
    Inventors: Robert P. Hallissy, Edmund Isakov, John F. Kita, Earle W. Stephenson
  • Patent number: 4754816
    Abstract: A tillage tool which includes an elongated shank having a bifurcated forward end. A protective overcap point is secured to the bifurcated forward end of the shank by means of a trapezoidally cross-sectioned key which interlocks in the bifurcation slot. The overcap point further includes a pair of laterally opposed, downwardly extending side skirt portions which extend adjacent the side edges of the bifurcated leading end of the shank. A centrally located rib projects from the front of the overcap to adjacent the rear side thereof on the upper side of the overcap, and is of increasing width from its forward end to its rearward end, so that its divergent, opposed sides function to deflect dirt away from the center line of the shank portion.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: July 5, 1988
    Assignee: Adams Hard-Facing Company, Inc.
    Inventor: Delmar D. Edmission
  • Patent number: 4753299
    Abstract: A blade assembly for hard earth road graders has a support frame for attachment to the mouldboard of the road grader and a plurality of evenly spaced picks located in sockets spaced along the lower edge of the support frame. The picks have spigots to releasably locate in the support frame sockets and engage with the support frame to prevent relative rotation between the spigots of the picks and respective sockets. The picks each have a tungsten carbide tile attached to their front face with a straight transverse cutting edge along the lower edge. In use the working face of the picks is perpendicular to a road surface to achieve a shaving action.
    Type: Grant
    Filed: May 2, 1986
    Date of Patent: June 28, 1988
    Inventor: Thomas A. Meyers
  • Patent number: 4729802
    Abstract: A process for increasing surface hardness of a heat-hardenable steel disk, along an annular band intermediate the disk central and edge portions, is disclosed. The process contemplates selecting a first position on the surface of the intermediate annular band. The process contemplates next rapidly heating at the first position a minor portion of the disk surface in relation to the remainder of the disk so as to cause the minor portion to increase in temperature to an elevated temperature ranging from 1400 to 1600 degrees Fahrenheit in a time period of 0.3 to 0.7 seconds. The disk is heated in a manner such that substantially no heat diffuses from the thus-heated portion of the disk to the remainder thereof. The process next contemplates rapidly terminating the heating step to allow the remainder of the steel disk to serve as a heat sink to rapidly cool the thus-heated portion from the elevated temperature to less than 1000 degrees Fahrenheit in 0.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: March 8, 1988
    Assignee: J. I. Case Company
    Inventors: John A. Matalis, Thomas Watmough
  • Patent number: 4715450
    Abstract: A grader blade has a steel body with a bottom edge incorporating a substrate of air-hardened tool steel casting material assembling a preformed cemented carbide insert in tiered relationship with, and rearwardly of, a casted layer of carbide grit. The front casted carbide grit layer is formed in the casting operation and the rear preformed cemented carbide insert is arranged in the tiered contacting and attached relationship with the carbide grit layer as the latter is casted with the substrate of special steel casting that holds the insert and layer together. The steel body of the blade also includes a recess formed in and along the forward portion of the blade bottom edge into which the casted asembly is disposed and welded to the blade.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: December 29, 1987
    Assignee: Kennametal Inc.
    Inventors: Robert P. Hallissy, Edmund Isakov, Earle W. Stephenson, Don C. Rowlett
  • Patent number: 4711187
    Abstract: A fertilizer knife for subsurface application of fertilizer in liquid or vapor form in a ground furrow comprises a narrow, elongated blade having a width W.sub.1, a leading edge with a soil breaking segment and a trailing edge. An elongated, hollow, fertilizer conduit having a width W.sub.2 is located behind the trailing edge and is shaped to correspond to the trailing edge. A foot portion on the blade has a bottom edge extending from the leading edge upwardly toward and beyond the trailing edge to form a rearwardly extending shoulder. The conduit terminates above and is spaced from the shoulder to prevent back pressure in the conduit during movement of the knife through the furrow and to provide for flow of fertilizer away from vertical walls of the furrow. A hard, abrasion-resistant material over the soil-breaking segment forms a substantially flat surface having a width W.sub.3 on the leading edge. Soil contacting surfaces on the blade and conduit are covered by a dried, abrasion-resistant coating.
    Type: Grant
    Filed: September 23, 1985
    Date of Patent: December 8, 1987
    Inventor: Daryl Schultz
  • Patent number: 4645013
    Abstract: An agricultural sweep which includes a pair of divergent wings having sharpened, earth-cutting edges. The wings define an angle of between 60.degree. and 100.degree., and a hard metal insert is used to provide an overlying cap at the forward end of the two wings where the wings converge and extend toward a leading point. The pointed forward ends of the two wings are cut away, and a point carried by the insert is inserted in the space which remains after the pointed forward ends of the two wings have been removed. The insert tapers to a ridge or crest which lies in a plane which bisects the sweep, so that the wings lie on opposite sides of the bisecting plane.
    Type: Grant
    Filed: September 12, 1985
    Date of Patent: February 24, 1987
    Assignee: Adams Hard-Facing Company, Inc.
    Inventor: Delmar D. Edmisson
  • Patent number: 4630692
    Abstract: The method of forming a cutter, which includes a core and a wear resistant insert defining a body means which includes(a) applying to the body means a mixture of:(i) wear resistant metallic powder, and(ii) binder(b) volatilizing the binder,(d) and applying pressure to the body means and powdered metal, at elevated temperature to consolidate same.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: December 23, 1986
    Assignee: CDP, Ltd.
    Inventor: Gunes M. Ecer
  • Patent number: 4625810
    Abstract: A tool for tilling the soil, such as a sweep, chisel or drill, which includes an elongated earth parting blade or shank having an upper end and a pointed lower end, and having a tapered, undercut dove-tailed slot extending from the pointed lower end longitudinally upwardly in the blade. A hard metal wear insert is mounted on the pointed lower end of the blade. The insert includes an overlay plate which is of complementary configuration to the blade point, and a locking key which is wedge-locked into the slot on the blade.
    Type: Grant
    Filed: February 27, 1985
    Date of Patent: December 2, 1986
    Assignee: Adams Hard-Facing Company, Inc.
    Inventor: Delmar D. Edmisson
  • Patent number: 4589498
    Abstract: A tillage tool appendage which includes a base plate or shank portion, adapted to be connected to the frame of the tillage tool, and a plow point bar-overcap welded to the base plate or shank portion. The plow point bar-overcap includes a leading edge lip which overhangs the base plate or shank portion so as to extend past the lower or bottom surface of the base plate or shank portion, and an overcap which lies atop the base plate or shank portion. Weld metal is deposited between the leading edge lip and the base plate or shank portion in a shielded location and is utilized for joining the plow point bar-overcap to the base plate or shank portion.
    Type: Grant
    Filed: February 25, 1985
    Date of Patent: May 20, 1986
    Assignee: Adams Hard-Facing Company, Inc.
    Inventor: Halsey J. Wetmore
  • Patent number: 4574502
    Abstract: A plow blade for snow plowing or other plowing applications is constructed prepared from a transparent material to reduce plow weight and to permit the normal lighting of the plow vehicle to be seen through the plow blade, thus eliminating the need for auxiliary lighting. The plow blade is especially suitable for use with small plows, such as those designed for use with small four-wheel drive passenger cars. In the preferred embodiment, a transparent, replaceable plastic plow face member is supported by a light weight frame.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: March 11, 1986
    Inventor: James R. Blau
  • Patent number: 4547985
    Abstract: This invention relates to the protection of metallic surfaces susceptible to abrasion by rock-like material. According to the invention, a metallic surface susceptible to abrasion by rock-like material is protected by stud welding studs of abrasion resistant metallic material to the metallic surface in closely spaced relationship to cause the majority of the rock-like material to contact the abrasion resistant studs instead of the metallic surface. Typical of such metallic surfaces are a ground engaging tool, earth-working equipment, or chutes for conveying the rock-like material. The abrasion resistant metallic material comprising the stud can be formed of cast material of compacted metallic powder.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: October 22, 1985
    Assignee: Sherritt Gordon Mines Limited
    Inventors: Vilnis Silins, Jerome H. Tameling
  • Patent number: 4529042
    Abstract: A tillage tool appendage which includes a base plate or shank portion, adapted to be connected to the frame of the tillage tool, and a plow point bar-overcap welded to the base plate or shank portion. The plow point bar-overcap includes a leading edge lip which overhangs the base plate or shank portion so as to extend past the lower or bottom surface of the base plate or shank portion, and an overcap which lies atop the base plate or shank portion. Weld metal is deposited between the leading edge lip and the base plate or shank portion in a shielded location and is utilized for joining the plow point bar-overcap to the base plate or shank portion.
    Type: Grant
    Filed: October 12, 1982
    Date of Patent: July 16, 1985
    Assignee: Adams Hard-Facing Company, Inc.
    Inventor: Halsey J. Wetmore
  • Patent number: 4482020
    Abstract: An agricultural share formed in two parts wherein the parts are mirror images of one another and each part comprises a major face having a point, the face being defined by a first, inner edge extending rearwardly from the point and a second, outer edge extending rearwardly from the point and diverging at an acute angle away from the first edge, an upstanding flange disposed at an angle greater than 90.degree. to the major face, extending along at least part of the first edge and extending forwardly at least as far as the point, the parts being joined together along their inner edges by mating of the flanges to form a raised ridge.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: November 13, 1984
    Inventor: H. Frank Jarvis
  • Patent number: 4428260
    Abstract: A shearbar is formed of a first material. A groove is formed in an upper surface of the bar and is filled with a second material relatively harder than the first material. A side surface is then milled off the bar until the groove is exposed. As a result, a shear edge of the bar is formed of the harder material rather than having only an outer coating of harder material.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: January 31, 1984
    Assignee: Sperry Corporation
    Inventor: Richard R. Eby