Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8113295 | Conservation tillage implement, system and method A conservation tillage implement having three or more rows of individual coulter wheel assemblies laterally spaced apart and removably mounted on a cultivator frame, a coulter wheel assembly in a given row being staggered with respect to the coulter wheel assemblies... | 02/14/2012 |
| 7762345 | Conservation tillage implement, system and method A conservation tillage implement having three or more rows of individual coulter wheel assemblies laterally spaced apart and removably mounted on a cultivator frame, a coulter wheel assembly in a given row being staggered with respect to the coulter wheel assemblies... | 07/27/2010 |
| 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 |
| 6966388 | Offset hitch A heavy gauge agricultural implement hitch is disclosed which is offset such that the implement and the tractor are not directly in line with one another, but allows the tractor to follow the previous crop rows and the implement to be offset of the previous crop row... | 11/22/2005 |
| 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 |
| 5419402 | Rotary hoe A no-till rotary hoe includes trash cutters for cutting field trash carried by the earthworking implements. The rotary hoe also has a walking beam mounted on a support arm with rotary hoe wheels mounted on forward and rear ends of the walking beam. The wa... | 05/30/1995 |
| 4867247 | Bedding plow A bedding plow providing a plurality of disks as plowing members each independently supported by a rearwardly located bearing supported by a trailing arm, which is supported, in turn, by a pivotal connection perpendicular to a fore to aft alignment of the... | 09/19/1989 |
| 4781129 | Debris and soil shaver A debris and soil shaver for no till farming is disclosed which has a disk-like member which floats up and down as it is pulled across the ground surface. The disk is angled with respect to a predetermined direction of travel of an agricultural apparatus ... | 11/01/1988 |
| 4745978 | Mounting arrangement for a coulter and knife A mounting arrangement for a coulter and knife which are mounted on separate collars on a vertical shank with the knife movable in the same vertical plane as the coulter including a locking mechanism which connects the mounting collars of the knife and co... | 05/24/1988 |
| 4660650 | Sod cutting apparatus A sod cutting apparatus which includes a generally flat slide member having an upturned frontal portion and multiple slots extending in parallel, spaced relationship from front to rear, hinge arms pivoted to upward standing fulcrums secured to the slide m... | 04/28/1987 |
| 4648465 | Resiliently mounted earth smoothing roller An implement for levelling the surface of an agricultural field, a so-called furrow-smoother, comprises a plurality of rings of rotary knives to throw the surface earth laterally away from the higher areas. The rings of knives are journalled in bearings w... | 03/10/1987 |
| 4622906 | Onion planter Planter apparatus (10) including a plurality of pivotally mounted arms (22, 24) each having a disc unit (26) arranged on an outboard end thereof has each of the arms constructed with horizontal and angular portions (28, 30 and 32, 34) disposed at such an ... | 11/18/1986 |
| 4577697 | Sod cutting apparatus A sod cutting apparatus which includes a generally flat slide member having an upturned frontal portion and multiple slots extending in parallel, spaced relationship from front to rear, hinge arms pivoted to upward standing fulcrums secured to the slide m... | 03/25/1986 |
| 4562780 | Trash farming means and method A trash farming implement is provided with a plurality of tillage assemblies on an implement, each tillage assembly having a tillage disc arranged to rotate about an axis which is inclined slightly from the vertical both in end elevation and in side eleva... | 01/07/1986 |
| 4466364 | Planter attachment The invention relates to agricultural implements for planting. Increased efficiency of planting in general and incorporating fertilizer in particular in no-till situations is achieved by frame, disk and knife assemblies (14, 15, 16) mounting a disk (44) i... | 08/21/1984 |
| 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 |
| 4448259 | Rubber spring for furrow opener A pre-stressed columnar rubber spring interposed between the pressure beam and pivoted draw bar tube of a no-till seed drill deflects under load in one direction only and the force causing increased spring deflection in the principle operational range inc... | 05/15/1984 |
| 4418761 | Adjustable tillage implement positioning apparatus A mounting/positioning apparatus for attaching an agricultural implement such as a reel unit or a rotary packer assembly to the frame of a tillage machine is disclosed. The apparatus includes two opposing end portions rigidly coupled together by means of ... | 12/06/1983 |
| 4415041 | Minimum till rotary hoe A minimum tillage rotary hoe includes a tool bar mounted transverse to the direction of field travel. Projecting rearwardly from the tool bar are a plurality of rotary hoe support arms each having a single, uniform diameter, multi-tined rotary hoe affixed... | 11/15/1983 |
| 4398608 | Rotary hoe A hoe that includes a transversely extending tool bar, a pivot shaft mounted on the rear and lower portion of the tool bar and extending parallel thereto, a plurality of support arms spaced along the tool bar and pivotally mounted on the shaft, each arm h... | 08/16/1983 |
| 4231433 | Cultivator with tool support arm and latch for holding same in raised non-working position Closely spaced cultivating tools are mounted along a tool bar and each tool may be locked in a raised position relative to the ground or may be lowered into floating engagement with the ground during use of the implement. A small tool bar is mounted paral... | 11/04/1980 |
| 4194575 | Multiple rotary hoe and support arms A multiple rotary hoe including individual hoe wheels mounted in front and rear rows with an individual support arm for each wheel and all of the support arms having a common axis mounted on a single pivot shaft for independent pivoting action in response... | 03/25/1980 |
| 4149475 | Seed and fertilizer drill with spring loaded coulters counter-mounted on vertically adjustable beam Seed drill has a row of coulters which are raised and lowered by a beam positioned above the coulters and connected to the coulters by spring assemblies. The beam is journalled for pivotal movement about its longitudinal axis and the spring assemblies are... | 04/17/1979 |
| 4083412 | Agricultural soil-working apparatus An agricultural seed-drill comprises a frame and pivotally mounted drag bar carrying a coulter disc. An ovoid rubber spring is located between the drag bar and a member, such as a moving beam or bell crank lever, associated with the frame to apply pressur... | 04/11/1978 |
| 4055126 | Sub-soil breaking, surface-soil conditioning and planter machine In a preferred embodiment of the invention, a trailer-like multi-sectioned frame is mounted on supporting spaced-apart wheels adjustable intermittently of the height of the frame and having mounted on the various sections of the frame, functional elements... | 10/25/1977 |
| 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 |
