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| Number | Title | Issue Date |
| 7210538 | Center pivot wing flotation method and apparatus A method and apparatus for proving a flotation for the wings of a foldable wing of an agricultural seeder that are centrally suspended from the main frame such that individual wings are pivotable centrally of the longitudinal axis therefore to better follow the cont... | 05/01/2007 |
| 7204319 | Jointed rockshaft with angularly adjustable segments A flexible rockshaft includes joint structure facilitating the adjustment of the rotational angle of rockshaft segments relative to each other. A link inserted between a rockshaft segment and the rockshaft flex member rotates on the same or a parallel pivot as adjac... | 04/17/2007 |
| 7188680 | Hydraulically adjustable hinged hitch An agricultural implement includes a pivoting assembly, a working assembly, and a tow bar assembly. The working assembly includes a front gang of coulters and a rear gang of coulters. The pivoting assembly includes a hydraulic cylinder. The hydraulic cylinder is adj... | 03/13/2007 |
| 7063167 | Self leveling towed implement An implement has a tongue used to tow the implement that can be raised or lowered with respect to the rest of the implement. The tongue is raised or lowered by a hydraulic cylinder. The raising and lowering ports of the cylinder are connected to two hydraulic accumu... | 06/20/2006 |
| 7021394 | Articulating and locking mechanism for farm implement chassis An articulating and locking mechanism of agricultural implement chassis is disclosed, intended for disc harrows and other implements with great working width, which are characterized by articulation to reduce the total width so as to facilitate transportation and st... | 04/04/2006 |
| 6912832 | Mower suspension A suspension system for a tractor-drawn mower used for crops for agricultural purposes is made up of parallel links, connected at a first end to a frame and to a mowing unit at a second end. A torsion spring assembly, similar to that used for torsion axles, is used ... | 07/05/2005 |
| 6609574 | Folding support frame An improved toolbar implement is described comprising a main support bar for attachment to a tractor, a pair of folding wings supported on a wheel assembly and connected to the main support bar, and a plurality of ground working tool assemblies attached t... | 08/26/2003 |
| 6068064 | Agricultural implement with ground engaging tool and fluid circuit to control same Agricultural implement to be conveyed by a self propelled vehicle includes a structural frame and a substructure moveable between a raised position and a lowered position. The substructure has at least one ground engaging tool supported thereon so as to e... | 05/30/2000 |
| 5988293 | Gauge structure for a cylinder operated depth control A stroke limiting structure for use with a lift control system on an implement includes a reciprocating link operably connected to a hydraulic cylinder and to a lift wheel assembly on an implement frame section. The link is connected by a lost motion conn... | 11/23/1999 |
| 5366024 | Remotely adjustable depth control An implement depth control system includes a rotating link pivotally connected to the frame adjacent the depth control cylinder. A cylinder pin contacts and rotates the link when the implement is lowered toward the field operating position. One end of an ... | 11/22/1994 |
| 5348101 | Hydraulic system for a towed implement A hydraulic rockshaft control circuit which includes a three-way valve that normally operates the rockshaft is connected to the lift cylinder on a trailing implement. A hitch lock valve connected to the rockshaft control valve maintains the rockshaft in a... | 09/20/1994 |
| 5277257 | Depth control mechanism for an implement A chain is connected at its distal end to the pin at the rod end of a cylinder on an implement lift and depth control assembly. An intermediate portion of the chain is trained around a gear which rotates about the axis of the pin connecting the base end o... | 01/11/1994 |
| 5234060 | Pressure and depth control in agricultural implement A soil contacting implement and depth gauging wheel at a predetermined vertical distance from the implement are provided for attachment to a tractor. Upward or downward movement of the wheel on the soil causes a deviation from the predetermined vertical d... | 08/10/1993 |
| 5228522 | Lift assist and cushion spring tool bar wheel for agricultural implements A agricultural implement incorporates a frame which is adapted to engage a three point hitch of a tractor. The frame employs a longitudinally extending member which is pivotally connected to a link member. A resilient yielding assembly is disposed between... | 07/20/1993 |
| 4974684 | Walking beam retainer A wheel arrangement includes a retainer mechanism with a spring-loaded pin mounted on the walking beam of a support wheel assembly on a folding implement. A mating retainer supported on the wheel support tube is normally offset from the pin when the imple... | 12/04/1990 |
| 4974681 | Method for fracturing sub-surface hardpan by drawing a particularly-angled tine therethrough A method for fracturing below ground hardpan which includes entering a sub-soil tine beneath the lower surface of a layer of hardpan, with the upper surface angle of the tine in range of orientation which provides an improved fracturing width.... | 12/04/1990 |
| 4967851 | Agricultural depth control system including cross plumbed series cylinders A hydraulic control system is provided which includes a pair of transversely spaced rockshaft cylinders which are plumbed in parallel and connected to opposite ends of a rockshaft on the central portion or main frame of a wide implement such as a field cu... | 11/06/1990 |
| 4898247 | Earth scraper attachment for a tractor or the like An earth scraper attachment adapted to be drawn by a farm tractor or other vehicle having a vertically adjustable three point hitch has an elongated frame with a front tongue portion connectable to the hitch with a specially designed hitch connection memb... | 02/06/1990 |
| 4871028 | Articulated implement frame with swing hitch A wide agricultural implement is provided with a pivoted swing hitch permitting endwise transport of the implement when supported on transport wheels which are raised and lowered by power means. A latch holding the hitch in its field working position is a... | 10/03/1989 |
| 4871030 | Farm implement having transport wheels and soil working rollers on rotating frame The farm implement drawbar is provided with a transverse frame which is pivotally mounted at the rear of the drawbar for movement between a working position and a transport position. The ground engaging rollers are mounted on the frame while separate tran... | 10/03/1989 |
| 4840233 | Agricultural implement having rock shaft actuated transport wheel frames A height adjusting mechanism for a framework that supports a multiplicity of ground working tools of an agricultural implement operating at variable depths of ground penetration is disclosed. The variability is acheived by rotation of framework supporting... | 06/20/1989 |
| 4825958 | Hydraulic lock for a flexible tool bar A flexible tool bar apparatus including a first tool bar adapted to have earth working implements attached thereto and a second tool bar also adapted to have earth working implements attached thereto. Two tool bars are pivotally attached at the inner ends... | 05/02/1989 |
| 4821811 | Mobile support frame A towable support frame for supporting a pair of 12-row implements in side-by-side relation includes front and rear frame structures interconnected by longitudinal frame members. Front transport and rear wheel assemblies support the frame and implements f... | 04/18/1989 |
| 4815545 | Subsoil blade ploughs Apparatus for fracturing below ground hard pans which includes entering a sub-soil tyne beneath the hard pan with upper surface angle in range of orientation which provides improved fracturing width.... | 03/28/1989 |
| 4782201 | Switch actuating assembly A switch actuation assembly is provided with a support means for supporting the switch in a fixed position relative to orientations of a moveable member. A motion response element is operably connected to the moveable member for being moved in one of two ... | 11/01/1988 |
| 4762181 | Minimum tillage implement A pull type minimum tillage implement includes a closed rectangular frame having a forward tool bar, intermediate tool bar and rear tool bar. The ground-working tools travel directly over each previous crop row and include a forward coulter mounted on the... | 08/09/1988 |
| 4762183 | Farming implement with adjustable earthworking tool framer The linkage mechanism between the front and the rear wheels of a farming implement includes a front and a rear arm the free ends of which suspend the respective wheels. Each arm has a transverse bracket near its other end. The bracket defines, at its free... | 08/09/1988 |
| 4738315 | Hydraulic control apparatus including master cylinder with multiple limit positions An hydraulic circuit includes a master cylinder and at least one slave cylinder connected in series circuit. An auxiliary discharge conduit with a solenoid-actuated valve is provided to selectively permit the master cylinder to extend its full useful rang... | 04/19/1988 |
| 4735547 | Backhoe mounting A mechanism for mounting a backhoe on a vehicle including a backhoe mounting subframe having a downwardly extending work position and a transport position in which it is pivoted upwardly and outwardly from the work position. The backhoe mounting subframe ... | 04/05/1988 |
| 4712622 | Self-leveling agricultural implement A self-leveling agricultural implement is disclosed which has been particularly configured for maintaining the frame of the implement in a level disposition as it is raised and lowered by relative movement of its hydraulically-operated supporting wheels. ... | 12/15/1987 |
| 4703810 | Disc and chisel plow implement An improved farm implement includes a frame having a forwad hitch which is maintained at a fixed position relative to the remainder of the implement during all stages of operation. The rear end of the frame includes running gear which may be raised and lo... | 11/03/1987 |
| 4700784 | Combined depth-control and wing-lift hydraulic circuit A combined depth-control and wing-lift hydraulic circuit is disclosed. The circuit is preferably used in combination with a farm implement having a tool bar. The tool bar is horizontally disposed relative to the ground, and is carried by the implement. Th... | 10/20/1987 |
| 4696349 | Farm implement with frame connected thereto by linkage mechanism An implement-mounting linkage mechanism for pivotally connecting a frame to a wheeled implement is disclosed. The mechanism is preferably used for pivotally connecting a wheeled load-bearing frame to the backside of a wheeled farm implement. The frame inc... | 09/29/1987 |
| 4681335 | Center pivot hitch assembly A novel center pivot hitch assembly mechanism is disclosed. The mechanism of the present invention is preferably carried by a wheeled tool bar and a wheeled agricultural implement. The wheeled agricultural implement or cart is typically moved along a path... | 07/21/1987 |
| 4660842 | Agricultural implement with elevation control mechanism An elevation control mechanism is provided for an agricultural implement. A first lever is pivotally mounted to the implement frame about a pivot axis for oscillation relative to the frame. The first lever carries a ground engaging wheel. A second lever i... | 04/28/1987 |
| 4655296 | Farming implement with wheel depth control A farming implement is disclosed having a series of wheel subassemblies supporting a towed frame. Each subassembly has a front wheel, preferably a castor wheel, and a rear wheel arrangement. According to the invention, the rear wheel arrangement is secure... | 04/07/1987 |
| 4637474 | Tractor and towed implement with elevation control system for implement including pressure responsive valve actuator The elevation of a tool carried by an implement towed by a tractor is determined by a hydraulic motor mounted on the implement adjusting the wheel height. A servo valve mounted on the tractor responsive to line pressure controls the hydraulic motor. An op... | 01/20/1987 |
| 4619340 | High clearance self-propelled vehicle with variable clearance and variable wheel spacing A vehicle has a frame (2), wheel assemblies (3) connected to the frame, and a lateral support assembly (4) connected between each of the front wheel assemblies and the rear wheel assemblies. Each wheel assembly is pivotally connected by an upper pivot mem... | 10/28/1986 |
| 4597452 | Disk grading terrace plow A disk grading terrace plow comprising a plurality of disk units mounted below an angled beam frame which is towed at an angle of 40 to 45 degrees to the direction of tow via a tractor connected to an elevated hitch beam mounted to the said angle beam fra... | 07/01/1986 |
| 4569296 | Agricultural tool bar and chemical applicator A wheeled agricultural implement that serves as a tool bar and transporter and disburser of agricultural chemicals. The implement provides a storage reservoir, a spray type disbursement system and apparatus for attachment to other agricultural implements ... | 02/11/1986 |
