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Corn threshing cylinder and concave

阅读:980发布:2022-06-03

专利汇可以提供Corn threshing cylinder and concave专利检索,专利查询,专利分析的服务。并且An agricultural combine for shelling corn comprises a cylinder with helical ridges and a concave having guide ribs perpendicular to the axis of the cylinder. The helical ridges impart both a longitudinal translation and an axial spin to the ears of corn, and the guide ribs cause the ears to be aligned parallel therewith. The alignment of the ear results in the corn being shelled by the abrasion of one ear against another, thus reducing the cracking of the kernels while increasing the vigor of the shelling action.,下面是Corn threshing cylinder and concave专利的具体信息内容。

1. In an agricultural combine having a cylinder mounted for rotation about a horizontal axis and a cooperating concave positioned below the cylinder for receiving crops at a forward edge and ejecting them at a rearward edge under the impetus of the cylinder rotation, the improved cylinder and concave especially adapted for shelling corn comprising: a plurality of parallel, outwardly projecting and elongated ridges spaced at intervals around the periphery of the cylinder and fixed thereto, said ridges being skewed relative to an element of the cylinder; a plurality of parallel upstanding guide ribs fixed to the upper surface of the concave and extending between the forward and rearward edges thereof in a direction perpendicular to the axis of the cylinder, said guide ribs being spaced from each other a distance sufficient to just accommodate a predetermined plurality of parallel and tangentially contacting ears of corn between each adjacent pair of guide ribs but less than the length of an ear of corn; the gap between the surface of the concave and the outer edge of the helical ridges being sLightly less than the diameter of an unshelled ear of corn; whereby said guide ribs maintain the ears of corn parallel with each other and with said guide ribs, and whereby said helical ridges impart simultaneous longitudinal translation and axial spin to the ears of corn passing through the cylinder and concave, thereby to induce shelling of the ears by the abrasion of adjacent ears against each other.
2. The combine of claim 1 wherein said cylinder ridges are continuous parallel helixes extending around the cylinder from one end to the other of the cylinder.
3. The combine of claim 1 wherein said cylinder ridges are arranged in a herringbone pattern of alternatingly inclined groups of short, straight and parallel ridges, so that rotation of the cylinder presents a continuously reversing pattern of inclined ridges.
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