With Specific Relationship Of Mast-type Hitch (i.e., Three-point Hitch) To Implement Patents (Class 172/47)
  • Patent number: 9033074
    Abstract: Disclosed is a coupler comprising a first structure, a first shaft rotatably supported by the first structure, a second structure supporting the first structure, and a moving device configured to move the first structure relative to the second structure.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: May 19, 2015
    Inventor: Chris Gates
  • Patent number: 8555994
    Abstract: An agricultural device is couplable to a tractor vehicle with carrier arms. The agricultural device comprises a carrier frame with a set of wheels and a coupling device for coupling the agricultural implement to a tractor vehicle. The agricultural device further comprises a coupling frame having at least one coupling point for coupling of the coupling frame to both carrier arms of the tractor vehicle. The coupling frame is connected to the carrier frame so as to be rigid in rotation in the vertical plane, wherein at least one coupling point of the coupling frame is positioned on or above the center line of the carrier frame. Owing to the fact that the carrier arms extend horizontally or upwards, the carrier arms will not or will hardly get out of position as a result of the travelling of the vehicle.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: October 15, 2013
    Assignee: Lely Patent N.V.
    Inventor: Alfonsus Jacobus Van Den Engel
  • Patent number: 8413737
    Abstract: An implement for soil preparation is moved in a direction of travel by a tractor with a three-point linkage. The implement includes an attaching mechanism, a coupling member with three coupling points, a first tool beam which is attached to the coupling member, at least one tool which is supported by the first tool beam, and three coupling elements which are each movably attached to the coupling member in the region of the respective coupling points to connect the coupling member to the attaching means. The first coupling element defines a path of movement for a guided movement of the first coupling point with respect to the attaching means. The second and the third coupling element each define a path of movement for a guided movement of their respective coupling point with respect to the attaching mechanism.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: April 9, 2013
    Assignee: Forage Innovations B.V.
    Inventor: Jelle Fredo Oudemans
  • Patent number: 7850190
    Abstract: An NH3 applicator implement is equipped with a hitch arrangement for automatically effecting a connection with a tongue of an NH3 nurse tank wagon. A quick-connect coupler assembly is provided for connecting the transfer hose of the nurse tank wagon to the supply hose of the implement. The quick-connect coupler assembly includes a first coupler section mounted to the applicator implement for powered, guided movement into engagement with a second coupler section mounted to the tongue of the nurse tank wagon. An electro-hydraulic control system including relay logic is used to first lock the fully coupled coupler sections together and then to engage the flow of NH3 by remote actuation of a main on/off valve located at the nurse tank.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: December 14, 2010
    Assignees: Deere & Company, PGI International, Ltd.
    Inventors: Jarrod Ruckle, John Rumohr, Garrett Goins, Spencer M. Nimberger, Francisco Gonzalez
  • Patent number: 7690439
    Abstract: An automatically actuating apparatus for engaging an implement to an ASAE S278.6 three-point hitch quick coupler utilizing a pivoting motion about an upper hitch point and an automatic latching mechanism to engage and retain lower hitch pins that simplifies connection of an implement. The mechanism also includes a mechanism for automatically engaging the PTO driveline between a tractor and a powered implement as the implement is engaged with the hitch.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 6, 2010
    Assignee: CNH America LLC
    Inventors: Edward H. Priepke, Douglas S. Fitzkee
  • Patent number: 7575077
    Abstract: A lever-operated PTO shaft connection mechanism for use with a three-point hitch quick coupler that aligns and engages the PTO driveline between a tractor and a powered implement.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: August 18, 2009
    Assignee: CNH America LLC
    Inventors: Edward H. Priepke, Douglas S. Fitzkee
  • Patent number: 7410004
    Abstract: A self-propelled agricultural tool carrier has a lifting carriage mounted between the front and rear sets of wheels. A tool bar adapter is mounted to the lifting carriage below the frame for connection to a tool bar that supports planting and cultivating equipment. Laterally spaced-apart stabilizing legs are rigidly mounted to the frame and extend downward along opposite sides of the lifting carriage. The tool bar has a pair of braces, each of which engages a support member on a lower portion of each of the stabilizing legs to restrain the tool bar against lateral movement. Causing the carriage to lift raises the tool bar and disengages the braces from the support members.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: August 12, 2008
    Inventor: Ned H. Meier
  • Publication number: 20080169109
    Abstract: A modular transmission assembly is provided for an agricultural or industrial utility vehicle especially for a tractor. The transmission assembly comprises a housing member with at least three attachment sites for components of a three point hitch arrangement. The attachment sites being provided at the housing member for attaching at least two draft links and at least one upper link. The transmission assembly further comprises a power take off transmission module being adapted to the housing member, the transmission module having at least two different gear ratios.
    Type: Application
    Filed: January 17, 2007
    Publication date: July 17, 2008
    Inventors: Frank Buhrke, Bryan K. Buerkle
  • Publication number: 20080142231
    Abstract: An automatically actuating apparatus for engaging an implement to an ASAE S278.6 three-point hitch quick coupler utilizing a pivoting motion about an upper hitch point and an automatic latching mechanism to engage and retain lower hitch pins that simplifies connection of an implement. The mechanism also includes a mechanism for automatically engaging the PTO driveline between a tractor and a powered implement as the implement is engaged with the hitch.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: Edward H. Priepke, Douglas S. Fitzkee
  • Publication number: 20080115983
    Abstract: A lever-operated PTO shaft connection mechanism for use with a three-point hitch quick coupler that aligns and engages the PTO driveline between a tractor and a powered implement.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 22, 2008
    Inventors: Edward H. Priepke, Douglas S. Fitzkee
  • Patent number: 6988571
    Abstract: The purpose of the invention is to enable a crawler tractor to brake and stop certainly without applying a load to an engine and a driving mechanism, and without complicated operation. An operation link links a conic linkage (53) which links a steering wheel (7) with a main speed change lever (55) of the crawler tractor, and with an operation mechanism of a brake pedal (54). A neutral return mechanism for the operation link is provided. The operation link neutral return mechanism comprises a hook-like cam lever (61). When the brake pedal is depressed, the main speed change lever is moved to its neutral position before braking force occurs, and then, the brake is actuated. Accordingly, engine brake is used effectively, and the brake can be miniaturized.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: January 24, 2006
    Inventors: Eiichi Okamoto, Masakazu Komatsu, Yukio Kubota, Susumu Nochi, Susumu Akashima, Takashi Uno, Gaku Higashiguchi, Shinsuke Tani, Kazuo Yamamoto
  • Publication number: 20010022226
    Abstract: A three-point hitch for a tractor on which an attachment can be mounted has its lower links pivotally connected to the tractor at the tractor side and actuated by hydraulic cylinders in mounts on a hitch bracket. The upper link can be a piston-and-cylinder arrangement pivotally connected to the hitch bracket.
    Type: Application
    Filed: January 11, 2001
    Publication date: September 20, 2001
    Applicant: CRAMER KUPPLUNG GMBH & CO. KG
    Inventor: Rudolf Staude
  • Patent number: 6082211
    Abstract: A rear hitch is provided on the rear of a transmission casing. Rear axle casings, disposed at each side of the transmission casing, are provided with brackets. A hinge pin is spanned between rear hitch and each side bracket. A lower link and a check chain are pivotally supported on each hinge pin. A collar is provided on each hinge pin so as to be interposed between the lower link and the check chain.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: July 4, 2000
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventor: Naoki Yamakaji
  • Patent number: 5690180
    Abstract: A horizontal-axis cutter for soil cultivation of the type comprising a horizontal-axis rotor (2) fitted with a number of blades and a gear motor (4), connected on one side to the power take-off of the tractor and on the other to the rotor, in which the gear motor is located in the front part of the machine, forward of a vertical axis A--A passing through the rotor axis.The cutter includes a pair of stiffening bars (10. 11), one fitted at the front of the machine and the other at the back of it, the stiffening bars constituting an integral part of the machine frame and being able to slide inside corresponding seatings in a support (1) to be connected to the power take-off of the tractor.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: November 25, 1997
    Assignee: Rotomec S.p.A.
    Inventor: Flavio Veronesi
  • Patent number: 5655581
    Abstract: A stump grinder mountable on a three-point hitch of a conventional tractor and provided with a laterally and longitudinally movable cutter wheel. The stump grinder includes a support frame adapted for mounting on the three-point hitch, a swing frame horizontally pivotally mounted on the support frame, an elongated main beam vertically pivotally mounted on the swing frame, and a telescopic extension slidably mounted on the main beam. A side-cutting cutter wheel is rotatably mounted on the telescopic extension such that it is rotatable about a horizontal transverse rotational axis. The stump grinder is driven from the tractor power take-off with a drive line which includes first and second telescopic driveshafts and an intermediate support coupling mounted on the main beam, the driveshaft on the tractor side including a CV-joint on each end, and the driveshaft on the cutter wheel side including U-joint on each end.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: August 12, 1997
    Inventor: Robert Jeffery Craft
  • Patent number: 5620054
    Abstract: An adjustable hitch having a body, the body connected to a first vehicle at a central point about which the body is rotatable. The body also includes a radially offset connecting point at which the body is rotatably connected to a second vehicle. The rotatable connections of the body to the first and second vehicles accomodates vertical offset between one or more links connecting the vehicle. The arc of rotation of the body may limited by a pair of protruding stops.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: April 15, 1997
    Inventor: Charles L. Dannar
  • Patent number: 5505269
    Abstract: The object of the invention is a soilworking rotary machine in which there are kinematic and shape soilworking elements that obtain a cultivation effect to open and turn the soil. The fundamental unit of the machine is the cultivation unit compounded to tillage sections. The tillage sections are built with blades joined to the common holder. The blades are twisted, the holder is cone shaped and tillage sections are positioned at approximately a 450.degree. angle to the direction of linear velocity. The tillage sections, together with a transmission and support wheels, is affixed to the common frame.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: April 9, 1996
    Inventor: Janusz Roszczenko
  • Patent number: 5462131
    Abstract: A device which attaches an agricultural implement (2) to a tractor (1), and in addition, establishes a driving connection between the power take-off shaft of the tractor and the drive of the implement has, for this purpose, a drive unit (8) which includes two bevel gear angle drives (9, 10) arranged one above the other. One of the drives (9, 10) is firmly connected to the drawbar of the implement with the other one connectable to the lower steering arm of the tractor by an attaching stirrup (12). The attaching system allows the tractor and implement to pivot relative to one another around a vertical axis (25), a transverse axis (26) and a longitudinal axis (27). To achieve pivotability relative to the drive unit (8) around the longitudinal axis (27), the attaching stirrup (12) is supported by a sleeve (47) on a flange housing (39) which is arranged coaxially relative to the first connecting journal (20) of the drive unit (39) thereby achieving an improvement in the transmission of towing forces.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: October 31, 1995
    Assignee: GKN Walterscheid GmbH
    Inventors: Manfred Eidam, Michael Flanhardt, Stefan Rauschenbach, Andreas Roth
  • Patent number: 5346018
    Abstract: An inventive three-point hitch assembly that attaches to the front end of a truck or pickup and supports at three points a plurality of implements or tools. It has a belt-driven power take-off for rotary tools that is controlled by an electric clutch and driven by a pulley attached below the truck engine pulley. A hydraulic lift cylinder raises and lowers the hitch and implement or tool, which by the hitch parallelogram form maintains the implements in a vertical orientation. The lift cylinder hydraulic pressure is supplied by connections to the truck power steering system via electrically controlled solenoid valves.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: September 13, 1994
    Inventor: Rick L. Koster
  • Patent number: 5318134
    Abstract: An irrigation furrow and raised seed bed forming machine includes a main support frame, a hitch assembly, furrow and seed bed forming shovel assemblies, a seed bed mulching assembly, seed bed conditioning roller assemblies, and furrow side finishing slide assemblies. These assemblies of the furrow and bed forming machine are operable and cooperate to form irrigation furrows and raised seed beds in soil as the machine, being mounted to a tractor, is moved through a field. The hitch assembly is adapted for mounting the main support frame to the tractor to extend transversely to the direction of movement of the machine. The shovel assemblies are mounted to a forward portion of the main support frame in laterally spaced relation to one another. The mulching assembly is mounted at a middle portion of the main support frame rearwardly of the shovel assemblies and has an elongated rotatable mulching member extending transversely to the direction of movement of the machine through the field.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: June 7, 1994
    Inventor: Philip Jensen
  • Patent number: 5303790
    Abstract: A mechanism for the convenient and quick engagement of a power take-off of a farm tractor with a driven implement without the need for the operator to leave the tractor. The device is usable with a three point hitch for an implement and includes a spring loaded engagement shaft so that the power take off engagement is delayed until the implement is securely hitched.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: April 19, 1994
    Inventor: Lyle W. Coleman
  • Patent number: 5193623
    Abstract: A hitch assembly for coupling an implement to a prime mover is disclosed, which includes a first connector assembly, having a mount for mounting the first connector assembly onto the prime mover, and a second connector assembly having a mount for mounting the second connector assembly onto the implement. One or, preferably, a plurality of complementary plug and socket members is provided for the first connector assembly and the second connector assembly with the plug member(s) and the socket member(s) being disposed on the connector assemblies at an upper medial location thereof and at a lower outer location at an opposite side of the medial location. The socket member is provided with a throat portion which is disposed with its entry axis being substantially horizontal and with entry to the throat portion being bounded by an outwardly diverging lip portion.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: March 16, 1993
    Inventor: John Burette
  • Patent number: 5092409
    Abstract: A system includes two lower articulated longitudinal arms (6, 7) provided on their front ends with two bottom hitching points (8, 9), and an upper arm (10) in the middle, for hitching an implement at a third point; valves for controlling the rise and descent of the two lower arms and of the upper arm are provided, and the implement (3) is equipped with hitching members (11) corresponding to the three point hitch of a tractor; a rigid intermediate support frame (12) is provided for connection between the implement and the arms (6, 7, 10); the frame includes two bottom lateral points (13, 14) and one top middle point (15) for hitching the implement, and two lateral top points (16, 17) intened to be connected to the third top hitching point (10) of the tractor by connection jacks of variable length; the two lower arms (6, 7) are independent and can assume different inclinations, and the two lower lateral portions (22, 23) of the frame (12) are hitched to the two bottom points (8, 9), the assembly being such that
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: March 3, 1992
    Inventor: Hubert Defrancq
  • Patent number: 5040615
    Abstract: The power-take-off conversion unit of this invention is adapted for attachment to a vehicle with a driving pulley rotatable in a generally vertical plane and driving an elastic belt, wherein the vehicle has two mounting brackets located beneath the pulley. The unit has a frame with an arm that extends rearwardly from a rear portion of the frame. Two pins extending from the arm are adapted to engage within the mounting brackets on the vehicle to allow the frame to rotate about a horizontal axis. The frame has a planar locking surface extending therefrom and a cam surface which extends downwardly and outwardly from the locking surface. A driven pulley is rotatively mounted within the frame to engage with and be driven by the elastic belt of the vehicle. A belt-tensioning bar is rotatively mounted to the vehicle about a horizontal axis which is located above the locking surface of the frame.
    Type: Grant
    Filed: November 15, 1990
    Date of Patent: August 20, 1991
    Assignee: Support Services International, Inc.
    Inventor: Timothy M. Fletcher
  • Patent number: 4944649
    Abstract: This is a swing-tower arrangement for coupling a back-hoe assembly to a tractor or the like. It features a rocker swingable in elevation on the swing tower. An actuator on the swing tower controls the position of the rocker, improving transport and control of the backhoe and making practical the adaptation of the arrangement to a wide range of tows. Detachable rockers are variously used to shift the backhoe assembly to transport and working positions and to tow and lift other types of subordinate machines. A power takeoff is mounted on the rocker.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: July 31, 1990
    Inventor: Cecil J. Stralow
  • Patent number: 4944354
    Abstract: The invention relates to an three-point coupling device (3) for connecting a tractor to an implement (4). Two lower hitch arms (5, 5a) have been provided with catching hooks (7, 7a). An upper hitch arm (8) has also been provided with a catching hook (11). The lower hitch arms (5, 5a) may be raised or lowered by a power drive via lifting bars (10, 10a) and lifting arms (9, 9a). The upper hitch arm (8) is suspended from a holding device (20, 20a) which is associated with the lifting bars (10, 10a). As a result, the upper hitch arm (8) may be moved jointly with the lower hitch arms (5, 5a) upon actuation of the power drive which moves the lifting arms (9, 9a) and the lifting bar (10, 10a). It is no longer necessary for the tractor driver to hold the upper hitch arm (8) himself and place it on the upper coupling point (14) of the implement (4).
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: July 31, 1990
    Assignee: Jean Walterscheid GmbH
    Inventors: Hans Langen, Norbert Fartmann, Herbert Coenen
  • Patent number: 4936390
    Abstract: A three-point hitch mounted in-row tiller has a conventional three-point hitch mounted frame member with an outrigger arm pivotally mounted to the frame member in a manner that accommodates pivotal movement of the outrigger in relation to the frame member about two orthogonal axes. Pivotal movement about one of the axes causes tilting of a working tool mounted on the outrigger arm, and pivotal movement about the other axis causes vertical lifting and depth control of the working tool. Various working tool embodiments, including several with flexible teeth, and a mechanical/hydraulic sensor apparatus are also included.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: June 26, 1990
    Assignee: Town & Country Research & Development, Inc.
    Inventors: Jack F. Anderson, Jeffrey N. Anderson
  • Patent number: 4934471
    Abstract: A tractor has a three-point link assembly comprising a top link and opposed lower links which are connected together by a connecting assembly at their ends toward a working implement. The connecting assembly comprises an upper connector and lower connectors removably in engagement with corresponding connectable portions of the implement. The PTO shaft of the tractor is connected to an input shaft of the implement by an extendable transmission shaft having a pair of tractor joint and implement joint at its opposite ends. The connecting assembly has a clutch for separably operatively connecting an externally splined portion of the implement input shaft to an internally splined portion of the implement joint. The clutch comprises a guide fixed to the connecting assembly and extending substantially longitudinally of the tractor, a tubular case provided in the guide movably axially thereof and an operating assembly for the case. The implement joint is inserted in the case.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: June 19, 1990
    Assignee: Kubota Ltd.
    Inventors: Yoshio Tanaka, Takashi Sugawara
  • Patent number: 4887680
    Abstract: A device for automatically connecting a work machine to a tractor includes a connector for interconnecting the rear ends of top link and lower links of a three-point link assembly pivoted to the body of the tractor. The connector has an upper engaging portion and lower engaging portions automatically engageable with an upper connecting portion and lower connecting portions of the work machine, respectively. The connector is further provided with an assembly for automatically coupling the input shaft of the work machine to a transmission shaft connected to the PTO shaft of the tractor. The coupling assembly includes a coiled spring supporting the rear end of the transmission shaft freely movably and axially movably for accommodating misalignment of the input shaft relative to the transmission shaft when the two shafts are to be coupled together.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: December 19, 1989
    Assignee: Kubota Ltd.
    Inventors: Kenkichi Nozaka, Yoshihiro Kawahara, Takashi Fukutaka, Fumiharu Horie
  • Patent number: 4884639
    Abstract: The top link of a three-point link assembly on a tractor is connected to the two lower links thereof by a connecting assembly at the link ends toward a working implement. The connecting assembly has upper and lower connectors separably engageable with corresponding upper and lower connectable portions of the implement. An extendable transmission shaft having a pair of joints at its respective ends is interposed between the PTO shaft of the tractor and an input shaft of the implement. The connecting assembly has a clutch for operatively connecting an internally splined portion of the implement-side joint to an externally splined portion of the input shaft. The clutch has guides fixed to the connecting assembly and extending longitudinally of the tractor, a tubular case supported by slide members on the guides and movable axially thereof and an operating assembly for the case. The case has the implement-side joint inserted therein.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: December 5, 1989
    Assignee: Kubota, Ltd.
    Inventors: Kenkichi Nozaka, Yosihiro Kawahara, Takashi Fukutaka
  • Patent number: 4838015
    Abstract: A farm product pickup baler has a frame, ground wheels and a baling device within the frame. A produce pickup device is connected to the frame, as is a tongue. A U-shaped hitch bar pivotably connects the tongue to lifting arms of a tractor about 2 orthogonal axis.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: June 13, 1989
    Assignee: Rivierre Casalis
    Inventors: Patrick Mouret, Jean-Claude Galant
  • Patent number: 4838358
    Abstract: A coupling device for connecting a wheeled agricultural implement having driven working members to a tractor includes a towing connection and a hydraulic motive power transfer with a hydraulic pump. The hydraulic pump is connected to the power take-off of the tractor and to a hose connection connected at its other end with a hydraulic motor on the implement. For pivotal coupling of a drawbar connected with the implement, the towing connection includes a towing device permanently connected with the drawbar adapted to be rigidly, but releasably connected with the ordinary towing means of the tractor, e.g. the lowermost lift arms. To improve its maneuvering ability, the towing device is provided with a linkage positioned behind the rearmost point of the tractor and pivotally connected with the drawbar.
    Type: Grant
    Filed: January 30, 1987
    Date of Patent: June 13, 1989
    Assignee: JF-Fabriken - J. Freudendahl A/S
    Inventor: Jan Freudendahl
  • Patent number: 4805927
    Abstract: A hitch adapter couples a semi-integral, PTO-driven implement to a quick coupler carried by a tractor three-point hitch. The hitch adapter includes a drawbar located significantly below the level of the connection of lower three-point hitch link with the quick coupler and a parking stand is integral with the bottom of the drawbar. Lowering of the three-point hitch from a normal working position results in the stand engaging the ground to prevent interference between the hitch and the drive shaft coupling the implement to the tractor PTO shaft. Once the stand engages the ground, the hitch adapter can be disconnected from the quick coupler hooks by releasing latches associated with the lower hooks and lowering the three-point hitch.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: February 21, 1989
    Assignee: Deere & Company
    Inventors: Roger D. Stephenson, James C. Walters, Craig A. Richardson
  • Patent number: 4793430
    Abstract: A hitch adapter is used to couple a PTO-driven implement to a three-point hitch arrangement of a towing tractor. The implement includes a transmission housing mounted for rotation about an upright axis that passes through a ball connection effected between a drawbar of the hitch adapter and the implement tongue. The tractor power take-off shaft is connected by a telescopic drive shaft to an input shaft supported by the transmission housing for rotation about an axis extending perpendicular to and intersecting said upright axis.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: December 27, 1988
    Assignee: Deere & Company
    Inventors: Roger D. Stephenson, James C. Walters, Craig A. Richardson
  • Patent number: 4791996
    Abstract: A tractor having a high power-to-weight ratio (power 100 kw, weight 3500 kg) is obtained by using light-weight components (e.g., made from synthetic resin) for the cab, and by making the wheels smaller than is usual, i.e., with a diameter of 1.3 meters, and from aluminum or other light-weight material. Tractor is improved by providing an implement or implements which, in operation, are driven form power take-off shafts and act to propel the tractor.
    Type: Grant
    Filed: May 4, 1984
    Date of Patent: December 20, 1988
    Inventor: Cornelis van der Lely
  • Patent number: 4765637
    Abstract: Agricultural implements are adapted to be concurrently mounted to a three point lifting device of a tractor. Each implement is provided with three connecting elements, each with forked ends. The forked ends of one of the implements have tines separated a greater distance than the tines of the corresponding forks of another agricultural implement, so that the forked ends of one of the implements straddle the corresponding forked ends of another implement. In this way, the implements can be concurrently mounted on the lifting arms of the three point device.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: August 23, 1988
    Inventor: Cornelis van der Lely
  • Patent number: 4714123
    Abstract: The farm machine 2 according to the invention comprises a tongue 3 provided with a transmission device 5 fastened to the tongue 3 by a fastening housing 27 comprising a connecting pin 36 and connecting elements 37, 38 which limit the rotation of the transmission housing 5 around the connecting pin 36.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: December 22, 1987
    Assignee: Kuhn, S.A.
    Inventors: Rino Ermacora, Thierry Krebs
  • Patent number: 4614239
    Abstract: This driller for use in a rice field comprises attaching a vertically moving supporting frame to a guide frame which is connected with a tractor and is raised and lower by a first vertically movable mechanism; connecting a first transfer mechanism mounted on the guide frame with a second transfer mechanism mounted on the supporting frame by means of an expansion and contraction rod; providing a crank driven by the second transfer mechanism as well as a vertically movable vertical rod, on the supporting frame; connecting the crank with the vertical rod by means of a connecting rod; mounting a movable frame, which is biased forwards continuously by a biasing spring and has vertical drilling rods, on horizontal guide rails disposed at the lower end of the vertical rod; and connecting both ends of a swing lever whose middle part is pivotally supported on the front part of the guide frame to the tractor and the supporting frame respectively.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: September 30, 1986
    Inventors: Isao Minagawa, Toshio Minagawa
  • Patent number: 4520873
    Abstract: Agricultural apparatus to be driven by a tractor comprises a main frame attachable to the rear end of the tractor, a pair of ground-engaging wheels carried on the opposite ends of the main frame, a pair of rotary-driven agricultural units mounted on opposite sides of the main frame along a common axis, and a third rotary-driven agricultural unit mounted on the main frame centrally between the pair of units and rearwardly of their common axis. The three rotary-driven agricultural units such as rotary tillers, are each independently mounted to the main frame by a separate 3-point connection, permitting each to be float upwardly or downwardly with respect to the ground.
    Type: Grant
    Filed: June 10, 1983
    Date of Patent: June 4, 1985
    Assignee: Eshet Eilon
    Inventor: Nir Gefen
  • Patent number: 4512413
    Abstract: A rotary cultivating apparatus wherein a tiller frame having a rotary tiller unit is laterally shiftable relative to a fixed frame having connecting portions for a vehicle and a power input shaft. A mechanism for laterally shifting the tiller frame comprises a transmission gear member mounted on a transmission shaft for the tiller unit and having an inner gear and an outer gear, a shifting screw rod reversibly rotatable by the transmission gear member through intermediate gears, and an internally threaded member fixed to tiller frame and in screw-thread engagement with the screw rod. One of the intermediate gears is selectively meshable with the transmission gear member to shift the tiller frame laterally in either direction by utilizing the power for driving the tine shaft of the tiller unit.
    Type: Grant
    Filed: June 8, 1982
    Date of Patent: April 23, 1985
    Assignee: Kubota Ltd.
    Inventors: Mitsuki Hirata, Yoshitaka Sato, Kaname Matudaira
  • Patent number: 4444270
    Abstract: A soil cultivating implement of relatively large working width mounts a transverse row of rotary soil working members and the soil working members are carried in two side-by-side groups by corresponding substantially axially aligned hollow frame portions. Each soil working member is rotatable about an upwardly extending axis and directly connected to a power take-off of a prime mower. In order to enable the implement to tow a separate implement, a rear coupling structure is provided that includes rearwardly directed arms that are prevented from becoming bent, broken or otherwise damaged during use, and particularly during inoperative transport. The two frame portions are foldable upwardly and inwardly towards one another about pivots by hydraulic rams and a forward frame beam mounts a coupling trestle on a central beam portion. A carrying structure having rear coupling points is releasably interconnected to the trestle and secured in a relatively fixed position.
    Type: Grant
    Filed: February 25, 1982
    Date of Patent: April 24, 1984
    Assignee: C. Van der Lely N.V.
    Inventors: Ary van der Lely, Cornelis J. G. Bom
  • Patent number: 4417627
    Abstract: Apparatus for breaking rock found in soil, such as in a field used for farming, includes a hood-like housing. A work shaft and a drum are positioned under the hood with the work shaft preceding the drum in the normal direction of movement of the apparatus. Flail-like parts are located on the outer surface of the work shaft and travel along a circular path. Prongs are provided on the drum and also move around a circular path. The circular path of the prongs is located lower than the circular path of the flail-like parts and at their closest point the circular paths are approximately tangent to one another where rock or other material is transferred from the prongs to the flail-like parts.
    Type: Grant
    Filed: October 19, 1981
    Date of Patent: November 29, 1983
    Inventor: Josef Willibald
  • Patent number: 4415039
    Abstract: A soil cultivating implement has a central frame part that extends substantially horizontally perpendicular to the direction of operative travel of the implement, the frame part has lateral arms tiltably connected to its opposite ends about pivot pins which extend in the direction of travel. Each lateral arm has a corresponding group of power drivable rotary soil working members indirectly connected to it and, a strong but simple frame which resists the high operating forces without deformation. The inner ends of the arms are each held between respective spaced apart cheek plates so as to be surrounded on three sides by those two cheek plates and by a respective connecting piece that rigidly couples the pair of cheek plates to one another beneath the corresponding arm.
    Type: Grant
    Filed: March 3, 1981
    Date of Patent: November 15, 1983
    Assignee: C. van der Lely N.W.
    Inventors: Ary van der Lely, Cornelis J. G. Bom
  • Patent number: 4363362
    Abstract: An earth tilling machine is provided having a structural frame on which a plurality of earth working units are mounted and operable to cultivate or till the soil. Each earth working unit includes an earth working head having a plurality of earth working rotors each mounted for revolution about a respective vertical axis with the axes of all rotors of a particular head disposed in a common vertical plane. The rotors of each head are mounted for revolution about a single vertical axis which is coaxial with the axis of revolution of one of the rotors of each particular head whereby the effective working width of the head can be varied from a minimum of the effective working diameter of a single rotor to a maximum of the cumulative effective working length of all rotors carried by that head.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: December 14, 1982
    Inventor: Paolo Barato
  • Patent number: 4359100
    Abstract: In an attachment combination for agricultural tractors used for loosening soil in a field covered with living or dead plants or crop residue, a covering hood forms an ejection channel with a motor driven flail mower positioned under the hood. A support tube is located behind the mower and it carries at least one row of loosening elements. Motor driven rotatable tools are located rearwardly of the loosening elements. The flail mower hood can discharge in a first position where the material is directed downwardly and rearwardly in front of the support tube or in a second position where the material is directed behind the loosening elements and the rotatable tools. The mower is mounted on a rearwardly open U-shaped support frame consisting of a cross beam and two laterally spaced longitudinal beams extending perpendicularly of the cross beam. A coupling piece is located on the free end of each longitudinal beam with a counterpiece clamped on the support tube.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: November 16, 1982
    Inventor: Ernst Weichel
  • Patent number: 4339003
    Abstract: An implement mounts a row of rotatable members, having resilient tines, that are rotatable about upwardly extending shafts. The frame portion is pivoted to a forward coupling member at several points, a lower one of which is a shear pin that allows the frame portion to tilt upwardly about an axis defined by two upper pivots upon overload of a tined member.
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: July 13, 1982
    Inventor: Cornelis van der Lely
  • Patent number: 4337834
    Abstract: An implement for loosening soil arranged to be propelled by a tractor includes at least one supporting structure extending transversely of the direction of travel of the tractor and at least two agricultural tools releasably connected to the supporting structure. Additional implements whose tools are to be driven by the power take-off of the tractor through at least one universal joint shaft can be connected to the supporting structure. The supporting structure is V-shaped and is arranged inverted with respect to the soil so that a passage is formed enabling the universal joint shaft driving the tools of the additional implement to extend therethrough.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: July 6, 1982
    Inventor: Ernst Weichel
  • Patent number: 4285284
    Abstract: A soil cultivating implement has a row of pivotable soil working members linked to a transverse beam of the frame and individual eccentrics are connected to the members to raise and lower soil engaging portions thereof. The portions are pivoted so that the rear parts thereof move through greater amplitudes than front parts of the portions. The frame can be supported by ground wheels which in transport position elevate the soil working members above the ground and this can be accomplished with hydraulic assemblies. The front of the frame can have a resilient coupling to a prime mover to reduce shocks induced by the eccentric drives. Dispensing mechanisms can be positioned to the rear of the soil working members to dispense and/or seed the worked ground.
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: August 25, 1981
    Inventor: Cornelis van der Lely
  • Patent number: 4284146
    Abstract: A soil working machine pivotably mounts at least one rotor having serrated working elements. The rotor is pivotally connected at each end to a frame beam by a pin which can be inserted into either one of two holes located one above the other. The hole chosen governs the resistance to upward pivoting of the rotor. The machine can be hitched to a tractor either with the frame beam substantially transverse of the intended direction of operative travel, or with the frame beam inclined to this direction. Each rotor has end plates that mount forward blades and the outer plate supports a gear transmission to the rear of the respective blade.
    Type: Grant
    Filed: August 14, 1979
    Date of Patent: August 18, 1981
    Inventor: Cornelis van der Lely
  • Patent number: RE35835
    Abstract: A device which attaches an agricultural implement (2) to a tractor (1), and in addition, establishes a driving connection between the power take-off shaft of the tractor and the drive of the implement has, for this purpose, a drive unit (8) which includes two bevel gear angle drives (9, 10) arranged one above the other. One of the drives (9, 10) is firmly connected to the drawbar of the implement with the other one connectable to the lower steering arm of the tractor by an attaching stirrup (12). The attaching system allows the tractor and implement to pivot relative to one another around a vertical axis (25), a transverse axis (26) and a longitudinal axis (27). To achieve pivotability relative to the drive unit (8) around the longitudinal axis (27), the attaching stirrup (12) is supported by a sleeve (47) on a flange housing (39) which is arranged coaxially relative to the first connecting journal (20) of the drive unit (39) thereby achieving an improvement in the transmission of towing forces.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: July 7, 1998
    Assignee: GKN Walterscheid GmbH
    Inventors: Manfred Eidam, Michael Flanhardt, Stefan Rauschenbach, Andreas Roth