Machine for spreading fertilizer and seed
US4202474A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1976 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Dec 22, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S111/927
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A machine for spreading fertilizer and seed in which the width of the machine with respect to its working direction of travel is greater than its length with respect to the working direction of travel. The machine comprises at least two individual machine units having lateral and transverse sides which units are assembled together in a lateral relationship to each other by means of laterally located hitch elements on each unit. Each unit has a chassis borne at three support points by swivel wheels and is provided with additional hitch elements on the transverse side towards the working direction. On each unit at least one swivel wheel is lockable in both a working direction of travel and in a transport direction of travel which directions are at right angles to each other. When assembled together through paired hitch elements, the machine units are pivotable with respect to each other about a pivot axis parallel to the working direction, and also pivotable about a second pivot axis running transversely to the working direction of travel. One of the swivel wheels on each unit when locked in the working direction is utilized to provide a rotating motion to metering means for the disp…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.