Harvesters – Motorized harvester – Including driven air-blower unit
Patent
1986-09-15
1989-04-25
Hirsch, Paul J.
Harvesters
Motorized harvester
Including driven air-blower unit
563202, A01D 8710
Patent
active
048235415
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
The present invention relates to an agricultural harvester.
FIELD OF THE INVENTION
With previously known agricultural harvesters there can be difficulty in harvesting certain crops in certain conditions or in carrying out other tasks. For example, clover or lupins or fallen grain crops can be difficult to harvest. Also, when working in standing stubble, such as when cutting firebreaks or when seeding using direct drilling techniques, it would be useful to be able to cut and deliver straw from the standing stubble and deliver it to the rear of the machinery. Grain crops can become fallen through rain or hail damage and such crops include wheat, oats and lupins.
SUMMARY OF THE INVENTION
Harvesting of crops of the type represented by clover, lupins and fallen grain crops is enhanced by a harvesting apparatus which can lift the crop off the ground. Similarly, working in standing stubble is facilitated by the use of a harvester which can lift the stubble. In accordance with one aspect of the present invention there is provided an agricultural harvesting apparatus comprising a ground engaging housing, said housing having an open lower end, a cutting a suction blade assembly mounted within the housing adjacent the open lower end of the housing, for rotation about a substantially vertical axis and comprising a plurality of outwardly extending blade members arranged to cause air to be pushed through the cutting and suction blade assembly upon rotation of the latter, and outlet mean in the housing for removal of air sucked up by the cutting suction blade assembly and crop material cut by the cutting suction blade assembly.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a side elevation of an agricultural harvesting apparatus in accordance with the present invention;
FIG. 2 is a plan view of the apparatus of FIG. 1;
FIG. 3 is a section through the apparatus of FIG. 1 taken along the line 3--3 of FIG. 2.
FIG. 4 is a plan view of a cutting and suction blade assembly which forms part of the apparatus of FIG. 1 and which can be seen in FIG. 3;
FIG. 4a is a section through a cutting and suction blade along the line A--A of FIG. 4;
FIG. 5 is an underneath view of an impeller blade assembly which forms part of the apparatus of FIG. 1 and which can be seen in FIG. 3; and
FIG. 6 is a plan view of a harvesting apparatus in accordance with the present invention comprising a plurality of the units shown in FIG. 1 mounted in side by side manner and arranged to be driven from a common source.
DESCRIPTION OF THE INVENTION
In FIGS. 1 and 2 there is shown an agricultural harvesting apparatus 10 in accordance with the present invention which includes a housing 12 which has an open lower end 14. The open lower end 14 is provided with a flexible ground engaging skirt 15 which extends around the exterior of the lower end 14.
The apparatus 10 includes a first outlet duct 16 mainly for air and a second outlet duct 18 mainly for cut crop material and other solid material. The duct 16 is circular but the duct 18 is of square section. The duct 18 has peripheral apertured flanges at each end to enable it to be joined end to end with other ducts 18. The apparatus 10 also includes a vertical shaft 20, the upper end of which can be seen in FIGS. 1 and 2. As can be seen in FIG. 2 the housing 12 has a generally circular shape in plan.
The housing also comprises a lower portion 22 of a relatively large cross section and an upper portion 24 which is small in cross-section compared to the lower portion 22.
As can be seen in FIG. 3, the shaft `20 extends downwardly through the portion 22 and 24 of the housing 12 and terminates adjacent the lower end 14 of the housing 12. The lower end 14 is provided with an inturned flange 26. The shaft 20 is mounted to the housing 12 by means of a first, upper bearing assembly 28 and a second lower bearing assembly 30. The second bearing assembly 30 is mounted to the housing 12 b
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Hale John S.
Hirsch Paul J.
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