Tractor for agricultural purposes

Motor vehicles – Special wheel base – Five or more wheels

Patent

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Details

180311, 180900, B60K 1734

Patent

active

046484728

ABSTRACT:
A tractor for agricultural purposes, particularly for seedbed preparation, which comprises an engine of thirty or more kilowatts' power which turns gears in a steel metal gear box as supported together with the engine box a frame primarily of tubular or hollow beams, the frame having two frame parts which are movable relative to each other about the frame's longitudinal axis. The tractor has eight wheels which support the frame, four on each side. Each frame part has an axle which mounts on each side on common wheel supports two tandem wheels with pneumatic tires mounted thereon. Each wheel is driven directly by its own hydraulic motor controlled from a cabin mounted on the frame. Two trestles, which also function as ballasts, are adapted to be connected to the tractor's three-point lifting device, each trestle having fastening devices adapted for the lifting device on one hand and further hooks adapted for receiving agricultural implements on the other. The tractor's weight is distributed so that each wheel carries approximately the same weight and exerts a ground pressure of not more than about 0.16 kilograms per square centimeter. One of the trestle-ballasts weighs only fifty kilograms whereas the other weighs one thousand kilograms. The purpose of the tractor is to eliminate or at least minimize adverse compaction of the soil in seedbed preparation operations.

REFERENCES:
patent: 3154164 (1964-10-01), Shaw et al.
patent: 4207956 (1980-06-01), McColl
patent: 4289214 (1981-09-01), Spence
patent: 4309742 (1982-01-01), Holm et al.

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