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| Number | Title | Issue Date |
| RE38974 | Agricultural disc mounting system and method A disc mounting system includes the attachment of each disc to a disc gang bar via a dedicated leaf spring. Each of the leaf springs, which can be generally U shaped, are attached at a top end to the gang bar and at a lower leg to a disc spindle such that the disc i... | 02/14/2006 |
| 6505688 | Soil conditioning implement A seed bed packer including a frame, a plurality of wheels connected to the frame, and a soil packing element. The packer also includes a spring shank for transferring weight from the frame to the soil packing element. The spring shank includes a first le... | 01/14/2003 |
| 6158523 | Agricultural disc mounting system and method A disc mounting system includes the attachment of each disc to a disc gang bar via a dedicated leaf spring. Each of the leaf springs, which can be generally U shaped, are attached at a top end to the gang bar and at a lower leg to a disc spindle such that... | 12/12/2000 |
| 5595249 | Ground leveler attachment for a ground working device A ground leveler attachment for a ground working device comprises a bracket fastened to a shank supporting a ground breaking tool, a carrier arm connected to the bracket, a pair of leg supports in pivotal contact with the carrier arm, a pair of springs bi... | 01/21/1997 |
| 4977841 | Torsional joint attachment for a seed planter A seed drill machine of the type having a plurality of disk assemblies, and a torsion spring joint for connection of the disk assemblies to the frame of the machine. The machine is conventionally mounted on a pair of wheels and the disk assemblies can be ... | 12/18/1990 |
| 4896730 | Apparatus for cultivating rice and other crops An apparatus which can cultivate rice and other crops, comprising a frame having a plurality of transversely extending spaced cultivator bars, each of the bars having a plurality of spaced elongated soil working members extending generally vertically down... | 01/30/1990 |
| 4860672 | Trip mechanism for drill seed boot A seed drill including depending furrow openers having a lower shovel and a supporting seed boot. Each seed boot is pivotally supported on a longitudinal drag bar assembly connected to it about a transverse pivotal connection. The forwardly extending arm ... | 08/29/1989 |
| 4800964 | Compact shank assembly with leaf spring A compact, leaf spring biased shank assembly with a shank bracket which clamps to a tube and leaves the upper portion of the tube relatively unobstructed to eliminate interference with the lift mechanism and/or implement frame. The shank bracket includes ... | 01/31/1989 |
| 4694759 | Seed drill A seed drill for applying seed and/or fertilizer has a frame, reservoir, and sowing shares. The sowing shares are attached to the frame in such a way that they can move in an upright plane by means of superimposed and at least approximately parallel strut... | 09/22/1987 |
| 4669205 | Segmented snow plow apparatus Snow plow apparatus is described having segmented blade means comprising a plurality of bits. Each bit is connected to a vertically disposed shank having a triangular cross-section. The shank is slidably mounted in triangularly-shaped retention means carr... | 06/02/1987 |
| 4567689 | Vineyard cultivator A cultivator particularly well adapted for use in vineyards and orchards because of its ability to cultivate the ground between successive plants in the same row includes a main frame that is continuously laterally expandable under control of the operator... | 02/04/1986 |
| 4534418 | Spring teeth A spring tine for an agricultural implement for soil cultivation, composed of a bent spring blade having an upper end constituting a point of fastening for releasable attachment to the implement and having a lower end, and a carrier for the attachment of ... | 08/13/1985 |
| 4520875 | Marker for tilling implements A no-till marker for multi-row planters characterized by a soil-engaging disc yieldably supported on the outer or distal end of a marker support arm and oriented so that the concave face of the disc is turned generally toward the direction of implement tr... | 06/04/1985 |
| 4466492 | Earthworking implement having spring biased arms A rotary hoe has a tool bar mounted on a tractor and a plurality of individually pivoted arms carrying hoe wheels. Springs bias the arms in a downward direction to force the hoe wheels into the soil. A rotatable torsion tube supports the springs. An adjus... | 08/21/1984 |
| 4452319 | Disk harrow with individually spring-mounted disks A disk harrow has a frame adapted to be pulled along the ground in a normal travel direction and having at least one frame member, a mount on this frame adapted to secure same to a three-point tractor hitch, and a plurality of disk assemblies. Each of the... | 06/05/1984 |
| 4428437 | Mount assembly including structure to effect substantially constant biasing force A yielding mount assembly connecting a movable arm to a support. The arm is adapted to be attached to a number of structures including an earthworking tool, a rotary hoe wheel, a belt tightener roller, and a wheel supporting a vehicle. The mount assembly ... | 01/31/1984 |
| 4425972 | Split ring spring for earth working tool An earthworking tool having a biased trip assembly for yieldably holding the tool in a ground working position, allowing the tool to move over an obstacle, and return the tool to its earthworking position. The trip assembly has a stationary hinge member m... | 01/17/1984 |
| 4342166 | Tool fastening A mounting bracket for fastening replaceable earth engaging tools such as rotary hoe blades or trench digger teeth in which the shaft of the tool fits within a recess in the bracket and a spring biased pin is arranged to pass through both the shaft and th... | 08/03/1982 |
| 4249615 | Two-stage trip release shank assembly An implement shank is pivotally attached to the frame of the implement and normally is maintained in the soil by a heavy duty coil spring reacting between the shank and a support extending from the frame. The spring mount and shank holder are connected to... | 02/10/1981 |
| 4150726 | Land plane A land plane for leveling or grading the surface of a land area including a frame having front and rear wheel assemblies, a center section and two end sections. A plurality of grader blades are supported below the center section which in turn may be raise... | 04/24/1979 |
| 4136745 | Soil cultivating implements An implement has one or more rows of tines fixed to frame beams and the lateral sides of the frame have adjustable ground wheels to control the working depths of the tines. A further soil working member is connected at the rear of the frame by parallelogr... | 01/30/1979 |
| 4078615 | Adjustable spring loaded agricultural tool mounting An adjustable spring loaded agricultural tool mounting accommodating pivotal movement of the tool relative to a normal operative relation to an implement frame when said tool encounters an obstacle. The tool includes a part projecting upwardly and rearwar... | 03/14/1978 |
| 4066132 | Disk harrow with beam member suspended by U-shaped springs Disk gangs are resiliently suspended from an implement frame by retroverted flat spring members. Flat surfaces of the springs are oriented perpendicularly to the disk blade shaft to thereby permit vertical and fore-and-aft flexing of the disk gangs as obs... | 01/03/1978 |
| 4055221 | Soil cultivating implements A soil-cultivating implement has soil-working members mounted for rotation about corresponding upwardly extending axes. A soil-working tool, preferably one or more tines, is connected to a support of the soil-working member by at least one quick release f... | 10/25/1977 |
| 4043401 | Soil cultivating implements A cultivating implement has side-by-side soil working members journalled in a hollow frame portion. Each member includes a support with hub that is connected to the lower end of a corresponding shaft. The shafts of the soil working members have meshed pin... | 08/23/1977 |
| 4034814 | Rotary harrows A cultivator or harrow has a row of soil working members and each of these members is a rotatable support on a shaft that is driven to rotate about an upwardly extending axis. Each support is comprised by two similar diametrically opposed portions and eac... | 07/12/1977 |
| 4011727 | Movable cable plow for constructing underwater cable A movable cable plow for dredging an underwater cable groove in a sea bed is disclosed wherein the plow is attached to a main body adapted to be pulled across the sea bed, such that it is adjustable vertically and angularly with respect to the main body. ... | 03/15/1977 |
| 3967685 | Independent and biased cultivator support A rotary hoe implement, having hoe support arms independent of adjacent hoe support arms, and a selectively adjustable means for varying the downward pressure exerted by the leaf spring biasing means acting on each support arm.... | 07/06/1976 |
