CA1107599A - Mcdoom stripper-harvester - Google Patents

Abstract

ABSTRACT
A standard through-flow grain harvester consists of components for picking up lodged crops, cutting, feeding, treshing, separating grain from straw and cleaning.

In this invention, pneumatic plant deflectors and pneumatic plant dividers may lift and deflect the plant towards an upper stripping drum rotating counter clockwise; and a lower stripping drum rotating clockwise. Both stripping drums may be fitted with spirally arranged fingers. The stripped grain may be sucked by a -suction fan into a bin fitted with an automatic door. The exhaust from the suction fan may supply air to the plant deflector and plant dividers. The air from the plant deflector and plant dividers may be controlled in a manner which would prevent grain scatter on the ground and facilitate collection of the stripped grain.

Description

SPECIFICATION

This invention relates to a stripper-harvester for harvesting grain crops.

- It is common in through-flow harvesters to reap a grain crpp by cutting the plant and moving the straw, with the grain still attached, to the treshing mechanism where the grain is removed from the straw and then cleaned. However, the amount of components involved in this procedure" renders the through-flow harvester both costly and cumbersome.

I have found that the manner in which grain is harvested by a through-flo~ harvester may be improved upon by a stripper-harvester. In a stripper-harvester grain may be stripped from the plant and sucked by a suction fan into a bin fitted with an automatic door. On leaving the bin the grain may be processed as in the through-flow harvester. The pick up reel, cutter bar, header auger, paddle ; elevator, front and rear beaters~ cylinder, concave and straw walkers may therefore be eliminated.

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' 75~9 In drawings which illustrate the embodiments of the invention, Figure 1 is a top view of the embodiments, Figure 2 is an elevation in section of the embodiments, Figure 3 is a front view of the embodiments, and Figure 3A is an exploded view of the stripping drums.

The stripper-harvester comprises a treshing table 1, consisting of a pneumatic plant deflector 2; air- distribution ducts 3;
pneumatic plant dividers 4; an upper stripping drum 5 and a lower stripping drum 6. Both stripping drums may be fitted with spirally arranged fingers 7, shown in Figure 3A. Air from the pneumatic plant dividers 4 may lift the plant, while air from the pneumatic plant deflector 2 may force the plant onto the stripping drums 5 and 6.
Air from the plant deflector 2 and plant dividers 4 may be controlled in a manner which would prevent grain scatter on the ground and facilitate collection of the stripped grain.

The grain may be stripped from the plant by the upper stripping drum 5 rotating counter clockwise and the lower stripping drum 6 rotating clockwise. The stripped grain may be sucked through a suction duct 8 into a bin 9, fitted with an automatic door 10, by a suction fan 11. The exhaust from the suction fan 11 may supply air to the pneumatic plant deflector 2 and the pneumatic plant dividers 4 9 through the exhaust duct 12 and the air distribution ducts 3. On leaving the bin 9 through the automatic door 10, the grain may be processed as in the through-flow harvester.

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Claims (3)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A stripper-harvester for harvesting grain crops comp-rising a treshing table with a pneumatic plant deflector; air dist-ribution ducts; pneumatic plant dividers and upper and lower stripp-ing drums fitted with spirally arranged fingers.

2. A stripper-harvester as defined in claim 1, in which the stripped grain is sucked through a suction duct into a bin, fitted with an automatic door, by a suction fan.

3. A stripper-harvester as defined in claim 1 and claim 2, in which the exhaust from the suction fan may supply air to the pneumatic plant deflector and pneumatic plant dividers.