Expandable and retractable unloader
AssigneeDeere & Company
InventorMark R. Underwood
Life of this patent
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AssigneeDeere & Company
InventorMark R. Underwood
Estimating the term…
A grain combine threshes grain from crop and deposits the grain in a grain bin. A discharge conveyor is mounted to the grain bin. At the distal end of the discharge conveyor is a discharge for expelling the grain. A telescopic, secondary unloader which is smaller than the discharge conveyor is located immediately below the discharge. The secondary unloader may be variably extended beyond the end of the discharge, or retracted when it is not in use. The secondary unloader is divided into grain conveying and paddle return sections which are formed from a partition which extends along the length of the secondary unloader. Paddles are provided in each section and are joined to a continuous flexible linkage mounted around sprockets. The secondary unloader uses hydraulic cylinders to extend and retract. When the secondary unloader is retracted, it is recessed inward from the distal end of the discharge conveyor which operates in a conventional manner by discharging grain from the discharge. When the secondary unloader is in an extended position, the reach of the discharge conveyor is extended by the length of the secondary unloader. In the extended position, grain is expelled from the discharge and falls into the grain conveying sections at the proximal end of the secondary unloader. The secondary unloader then conveys the grain to its distal end where the grain is expelled.
A grain harvesting combine, comprising in combination:
A grain harvesting combine, comprising in combination:
A grain harvesting combine having a grain bin and a grain unloading system for transporting grain out of the bin, the unloading system comprising in combination:
A grain harvesting combine having a grain bin and a grain unloading system for transporting grain out of the bin, the unloading system comprising in combination:
Dependencies are inferred from the claim text.