Apparatus for chopping and discharging straw from a combine harv

Details Apparatus for chopping and discharging straw from a combine harv Apparatus for chopping and discharging straw from a combine harv

1995-03-31

1996-01-09

Melius, Terry Lee

Crop threshing or separating

Straw chaff spreader or handling

With chopper

56505, A01F 1240, A01F 2902

Patent

active

054825083

ABSTRACT:
A chopper and discharge apparatus includes a stationary housing for attachment to the rear discharge of a combine harvester so that straw is fed from the combine into an inlet of the housing and is discharged from an outlet of the housing. Within the housing is mounted a hub for rotation about the horizontal axis with the hub carrying a plurality of lugs at angularly and axially spaced positions therearound, each lug carrying a pair of pivotal blade members which are rotated with the hub in the form of flails. Each lug is associated with a stationary blade on the inside of the housing so that the pair of blades carried on each lug sweep past the stationary blade each on a respective side of the stationary blade. The blade members include some flat cutting blades and some fan blade members which have a flap portion at a trailing edge of the blade which is bent outwardly at right angles and is also inclined outwardly and forwardly to generate a fan action in the air carried by the blade. There are more flat blades adjacent a center of the hub than adjacent the ends of the hub to increase fan action at the ends of the hub for increased discharge velocity. The fan blades include a connection which is offset to locate the center of gravity directly radially outwardly from the mounting on the lug.

REFERENCES:
patent: 3599412 (1971-08-01), Lefeuvre
patent: 3678671 (1972-07-01), Scarnato et al.
patent: 3693335 (1972-09-01), Mathews
patent: 4631910 (1986-12-01), Doyen et al.
patent: 4637406 (1987-01-01), Guinn et al.
patent: 5042973 (1991-08-01), Hammarstrand
patent: 5232405 (1993-08-01), Redekop et al.

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