Helical element rotor-axial flow combine
AssigneeInternational Harvester Company
InventorsRichard A. De Pauw, David J. Gustafson
Life of this patent
Estimating the term…
Abstract
A general purpose rasp bar carrying rotor construction for an axial flow-type harvester combine embodying a vaned impeller and a series of bars which cooperate with elements within the surrounding rotor casing for crop threshing and grain separation purposes in a novel and efficient manner. The rotor proper is generally of imperforate tubular cylindrical construction so that the crop material in its entirety is confined to the annulus which exists between the rotor and its casing.
Claims13
In an axial flow-type combine, in combination, an elongated generally cylindrical open-ended rotor casing having a concave establishing a forward threshing zone, and a grate establishing a rearward separating zone, the forward open end of said casing being designed for reception of crop material, a series of spaced apart spiral transport fins fixedly secured to the upper region of said rotor casing internally thereof, a rotor of a generally cylindrical imperforate tubular construction mounted for rotation within said casing in coaxial relationship and substantially co-extensive therewith, a plurality of circumferentially spaced elongated helical transport rasp bars mounted on the cylindrical peripheral region of said rotor in said threshing zone and designed for cooperation with said concave in such zone for threshing and impelling the crop material rearwardly, a plurality of circumferentially spaced elongated longitudinally extending bars mounted on the cylindrical peripheral region of said rotor in the separating zone and designed for cooperation with the transport fins for impelling the crop material rearwardly, and means for driving said rotor.
In an axial flow-type combine, in combination, an elongated generally cylindrical rotor casing having a concave establishing a forward threshing zone, and a grate establishing a rearward separating zone, the forward end of said threshing zone being provided with a forwardly and outwardly flared funnel-like frusto-conical transition section designed for reception of crop material, a series of spaced apart spiral transport fins fixedly secured to the upper region of said rotor casing internally thereof, a generally cylindrical imperforate tubular rotor mounted for rotation within said casing in coaxial relationship and substantially coextensive therewith, a vaned impeller on the forward end of said rotor within the frusto-conical transition section having vanes which sweep around the inner surface of said transition section in coextensive close proximity thereto for moving the crop material received in said transition section rearwardly into said threshing zone, a plurality of circumferentially spaced elongated helical rasp bars mounted on the outer cylindrical surface of said rotor in said threshing zone and designed for cooperation with said concave for threshing and impelling the crop material rearwardly, a plurality of circumferentially spaced elongated longitudinally extending bars mounted on the outer cylindrical surface of said rotor in said separating zone and designed for cooperation with said transport fins in such zone, and means for driving said rotor.
Dependencies are inferred from the claim text.