Earth working – With drive means for tool or cleaner – With specific relationship of mast-type hitch to implement
Patent
1984-05-04
1988-12-20
Stouffer, Richard T.
Earth working
With drive means for tool or cleaner
With specific relationship of mast-type hitch to implement
172116, 172292, 180 22, 180 533, 180 537, 180209, 180900, 296187, A01B 3300
Patent
active
047919965
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a tractor being a power unit for agricultural machines.
Known tractors are tending to become heavier and heavier so that not only the ground pressure increases are adversely affecting the ground structure, but also ever increasing driving power is required.
SUMMARY OF THE INVENTION
According to one aspect of the present invention there is provided a tractor being a power unit for agricultural machines comprising an engine and a plurality of wheels, said wheels being of such width, that the soil which receive such wheels compacted to a relatively minor degree over a large width, the tractor having a high power-to-weight ratio and being provided with at least one power take-off shaft to which power driven machines are connectable.
According to a second aspect of the present invention there is provided a tractor comprising rotary soil working means at the front of the tractor which in operation exerts a pulling force onto the tractor.
According to a third aspect of the present invention there is provided a cultivator having tines that are hydraulically adjustable in height with respect to the frame of the cultivator.
For a better understanding of the present invention and to show how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side view of a tractor:
FIG. 2 is a plan view of the tractor of FIG. 1;
FIG. 3 is a front view of the tractor of FIGS. 1 and 2;
FIG. 4 is a fragmentary plan view showing an alternative construction for the rear part of the tractor.
FIG. 5 is a side view of the tractor of FIGS. 1 to 3 with implements fastened at front and rear;
FIG. 6 is a plan view of the tractor and implements shown in FIG. 5;
FIG. 7 is an enlarged view of the rear part of the tractor and the adjacent parts of the attached implements;
FIG. 8 is an enlarged fragmentary plan view of a coupling construction between a lifting device of the tractor and implements attached to it;
FIG. 9 is a side view of the tractor with a different implement attached to it;
FIG. 10 is a side view of an alternative embodiment of a tractor provided with a safety framework; and
FIG. 11 is a plan view of the tractor of FIG. 10.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The tractor shown in the Figures has a frame 1 mainly comprising a horizontal, hollow tube 2 extending in the intended direction of operative travel of the tractor, as indicated by an arrow A. The tube 2 is situated at the bottom of the frame and is provided with two horizontal carriers 3 extending transversely of the direction A. The carriers 3 are spaced apart from each other and their outer ends are fastened to upright cover plates 4 which are directed in the direction A and, as viewed from the side (FIG. 1) are rectangular. The upper edges of the cover plates are secured to the lower edges of a U-shaped frame part 5, which is shown in plan in FIG. 2. The frame part 5 has a relatively lightweight tubular construction, since its main function is to support only a cab 6 (omitted in FIG. 2 for the sake of clarity). As shown in FIG. 2, the frame part 5 comprises two tubes 7 located one on each side of the tractor and interconnected at their rear ends by a tube 8 which extends horizontally and transversely of the direction A. The construction comprising the parts 1 to 8 is approximately symmetrical about the vertical, central, longitudinal plane of the tractor, which is designated in FIG. 2 by reference numeral 9. The center line of the main frame tube 2 is thus also located in the plane 9. FIG. 2 shows a driving engine 10 disposed to one side of the plane 9 and supported by the carriers 3. The engine 10 is a lightweight, air-cooled engine with a power of about one hundred kilowatts.
On the other side of the plane 9, there is a fuel tank 11 which is supported by the carriers 3. Near the front end of the main frame tube 2 there are two rigid supports 12 which are fastened on the sides of the tube 2 and
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"MF 2805 Tractor", Massey Ferguson Machinery Guide, 824 AG, pp. 12,13.
Albright Penrose Lucas
Miller Robert A.
Stouffer Richard T.
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