Seed drill
US4811795A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1987 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Oct 30, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01M7/0075
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A seed drill comprising a frame (1), a beam (14) that is mounted on the frame (1) so as to extend transversely of the direction of forward motion of the drill and that has a plurality of coulters (5) mounted along the beam (14) so as to trail therefrom and engage the ground when in work, the beam (14) comprising a central beam portion (29) and an outer beam portion (30) each side that is pivotally connected to the central beam portion (29) so as to be pivotable upwards to a transport position, characterized in that a strut assembly (39) is provided at each side of the drill between the frame (1) and the respective outer end of the beam (14) so as to be inclined downwards towards said outer end when the outer beam portion (30) is lowered, and pivotal connections (45, 47) being provided between the ends of the strut assembly (39) and the frame (17) and the outer beam portion (30) so that the strut assembly (39) can pivot upwards with the outer beam portion (30) to the transport position, the pivotal connection (4) between the strut assembly (39) and the outer beam portion (30) comprising an elongated member (46) that is pivotally connected to the strut assembly (39) and is slidably r…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.