Corn Header Gutter Dam Reduces Kernel Losses
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Solution Overview
Problem
Conventional corn harvesting machines experience kernel losses due to 'butt shelling,' where individual corn kernels become dislodged and fall from the header during the separation process, leading to inefficiencies in grain collection.
Innovation Solution
A corn harvesting header equipped with a powered row unit and a gathering hood, featuring a slanted gathering surface and a laterally extending dam that forms a gutter to direct corn kernels rearwardly, preventing them from falling and ensuring they are collected within the header.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional corn headers are used for harvesting, then the harvesting process can be completed, but kernel losses occur due to butt shelling where loose kernels fall from the header onto the ground
Solution Approach 1:
The patent introduces an intermediary structure (the gathering hood with gutter and dam) between the row unit and the ground to intercept and redirect loose kernels. The gutter acts as a mediator channel that captures kernels falling during butt shelling and redirects them rearwardly into the header, preventing direct contact with the ground and eliminating the loss pathway.
Solution Approach 2:
The patent converts the harmful effect of butt shelling (kernels falling off ears) into a beneficial capture mechanism. By positioning the gutter to receive exactly these loose kernels and directing them rearwardly into the header, the system transforms what would be a loss into a recovery opportunity, ensuring kernels that would otherwise be lost are instead collected and processed normally.
2Loss of substance
If the gathering hood includes a laterally extending dam to restrict corn movement, then kernel collection is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functional elements into a single integrated gathering hood assembly. The outer wall, dam, and gutter are combined into one structure that simultaneously provides shielding, kernel restriction, and redirection functions. This integration reduces the number of separate components needed while achieving the desired kernel recovery effect.
Solution Approach 2:
The gathering hood structure serves multiple functions simultaneously: it shields the row unit, restricts lateral corn movement, captures loose kernels through the gutter, and redirects them rearwardly. By making this single component multi-functional, the patent reduces overall device complexity compared to having separate structures for each function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces kernel losses by directing dislodged kernels rearwardly into the header, enhancing the efficiency of grain collection and minimizing losses on the ground.
Implementation Method 1
at least part of the gathering surface being slanted downwardly toward the crop row path to generally direct corn into the crop row path
Implementation Method 2
The gathering hood further includes a laterally extending dam that projects upwardly from the outer wall adjacent the forward end to restrict corn from moving forwardly along the gathering surface
Data Source
AI summary
A corn harvesting header (24) includes a powered row unit (38) and a gathering hood (98). The row unit (38) defines a longitudinal crop row path that extends in a generally rearward crop travel direction and receives a corn row as the header (24) is advanced along the corn row. The gathering hood (98) partly overlies the row unit (38) and includes a laterally extending dam (132) that restricts corn from moving forwardly. The dam (132) at least partly defines a gutter to receive corn kernels and direct the corn kernels rearwardly.