Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 5555824 | Operator controlled pressure applicator for the furrow forming mechanism of a seed planter A mounting mechanism is disclosed for use in association with a row unit having a furrow forming apparatus as an integral part thereof. A linkage arrangement is provided for mounting the row unit to a tool bar of a tractor or the like thus allowing the fu... | 09/17/1996 |
| 5065681 | Hydraulic down pressure structure for an implement with multiple ground engaging tools An improved down pressure arrangement for an implement such as a multi-section grain drill having fixed-height section frames with corresponding gangs of opener assemblies. The opener assemblies of each gang are yieldingly biased downwardly by a spring an... | 11/19/1991 |
| 4311104 | Press grain drill A press grain drill includes a plurality of opener units mounted on an elongated tow tube and including a plurality of elongated, pivotably coupled elements forming a pair of parallelograms which support a self-penetrating shovel and a press wheel respect... | 01/19/1982 |
| 4291638 | Agricultural implements The present invention provides in an agricultural ground treating device particularly but not exclusively a seed drill arranged to be towed over the ground and having a plurality of ground engaging implements, means for causing all of the implements to en... | 09/29/1981 |
| 4275670 | Seed drill mounting arrangement Seed drill (FIG. 1) having furrow openers 10 and accompanying press wheels 12 pivotally arranged on frame 1 by mounting means 3. A spring 18 is interposed between the frame and the furrow openers - press wheels. The bias of the spring can be adjusted by o... | 06/30/1981 |
| 4208974 | Seed drill having parallel guide means for the movable shank A seed drill (FIG. 1 ) having a frame (1 ) with knife hoes (7 ) mounted thereon. The knife hoes are movable in a vertical plane and each has two laterally projecting wings (8 ) bent downwardly toward one another; the outer edges of the wings merge forward... | 06/24/1980 |
