Seed drill having parallel guide means for the movable shank

US4208974A · kind A · utility

Assignee

• Amazonen-Werke · DE

Inventors

• Heinz Dreyer · Lotte, DE
• Benno Wiemeyer · Osnabrück, DE

Key dates

• Filing date: Sep 2, 1977
• Grant date: Jun 24, 1980
• Expiry date: Sep 2, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S111/927
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

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 forwardly together to form a point. Each knife hoe has an upright strut (13 ) supporting the leading point of the knife. Further, each knife hoe is disposed on a shank (9 ) which is mounted on the frame with parallel guide means (10 ). The parallel guide means has at least one articulation (19 ) acting in a vertical plane, a stop (21 ) limiting forward swinging movement of the knife hoe about the articulation, and at least one resilient element (22 ) exerting a force on the knife hoe in the direction of the stop. The drill further includes a gauge wheel (16 ) for each knife hoe to limit the depth of penetration of the knife hoe into the soil.