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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7048069 | Agricultural disc harrow and method An agricultural implement consisting primarily of a towed frame supported on retractable wheels, the frame having a plurality of independently adjustable spindles for setting height and angle of attack for various size rotatable discs. Each disc is staggered to redu... | 05/23/2006 |
| 6901728 | Expanding and contracting implements For transportability, wide machinery such as disk and cycle-bar mowers are often detached from the tractor on which they are used, and loaded onto a truck or trailer. A new method is to make these wide machines retractable such that their width is no wider than allo... | 06/07/2005 |
| 5829535 | Common depth control adjustment for a ground opener An agricultural apparatus comprises a main frame with ground wheels supporting the frame for movement across the ground and a plurality of ground engaging openers mounted on the frame for engaging the ground. Each opener includes a depth control wheel mou... | 11/03/1998 |
| 4726303 | Zero-till drill This invention is directed to a novel zero-till seed drill which has a shortened wheel base and can thus closely follow the contours of a field which is being seeded, is capable of being raised and lowered at the beginning and end of each pass on the fiel... | 02/23/1988 |
| 4595064 | Drag attachment for a disk A drag attachment for a disk or cultivating implement which includes a linkage system mounted in cooperation with a fluid cylinder apparatus for raising and lowering the disk transport wheels, which linkage system includes a pair of drive arms connected t... | 06/17/1986 |
| 4479549 | Ground working implement A ground working implement is disclosed which comprises three rectangular frames connected together by means of hinges. A center frame is provided with a tongue for attachment to a traction device such as a tractor. Each of the frames is provided with a p... | 10/30/1984 |
| 4438710 | Seedling planter A twin row seedling planter is provided with a new mechanical system for ejecting seedlings into a cut in the ground made by a dibble after the dibble has cut to a selected depth. The planter also features an improved modular lay-out of planting beams, pa... | 03/27/1984 |
| 4371039 | Tool bar control for agricultural implement A tool bar control mechanism for an agricultural implement or the like having a frame, a pair of generally transverse tool bars mounted on the frame for rotation about their longitudinal axes and carrying ground working tools such as spring teeth for move... | 02/01/1983 |
| 4250970 | Automatic coulter depth control A farm implement has a mobile frame from which is suspended a number of chisel plow shanks and a row of rolling coulters ahead of the plows for cutting crop residue to prevent trash buildup and plugging at the plows. A transverse rock shaft on the frame i... | 02/17/1981 |
| 4240216 | Land forming and/or farming apparatus Apparatus is disclosed wherein a plow is mounted on a frame so as to form a ditch in the ground as the frame is towed behind a tractor. The frame is of such construction and so attached to a three point hitch that its rear end cannot be lifted without fir... | 12/23/1980 |
| 4220209 | Plow with improved tool raising construction The application discloses a multi-row plow adapted to be towed behind a small walking tractor. The plow comprises a draft frame having a pivotal attachment to the tractor and a tool frame. At the rear of the tool frame there is a ground engaging wheel. Ap... | 09/02/1980 |
| 4180135 | Hydraulic angling mechanism for disc harrow gangs Hydraulic mechanism for varying the angular relationship between a pair of adjacent end-connected disc harrow gangs which uses the same power source that ordinarily is employed for raising and lowering the harrow frame structure as a power source to actua... | 12/25/1979 |
| 4131162 | Earth working apparatus An earth working apparatus comprising a main frame having a hitch for detachably connecting the apparatus to a prime mover, a first ground working implement mounted on the main frame, a pair of support arms operatively connected at forwardly disposed ends... | 12/26/1978 |
| 4127951 | Automatic coupling mechanism for snow-plows and the like Disclosed is an automatic coupling mechanism for snow-plows and the like, provided by a first frame means which is attachable to a propelling vehicle for cooperating with a frame structure of a snow-plow for moving the plow along the road. A second frame ... | 12/05/1978 |
| 4113028 | Lift for dragged implement A lift device is mounted on a wheeled implement such as a disc harrow which has retractable wheels for transport. The lift device includes a pair of arms mounted on a horizontal pivot bar which is rotated by activation of the mechanism for lowering the wh... | 09/12/1978 |
| 4002208 | Plowing and levee cutting device The plow device is adjustable so that it can be pulled and operated by a powered tractor utilizing reciprocating lowering and lifting rods actuated by a 3 hitch hydraulic piston and piston rod attached to 3 respective hooks one hook pivotally connected to... | 01/11/1977 |
