german francais
It's all grist that comes to his mill.

The grain grader


There are some seeds of weeds, e.g. ergot, corn-cockles, and bitter vetches, which are almost the same size as grain, but differ in their forms. These cannot be separated by the sieves of the aspirator., but the grain grader can do.

The functioning of the grain grader


In the steel cylinder of the grain grader there are small grooves which can take in a weed seed fully, but a grain because of its lengthy form will sooner than the weeds fall out, when the cylindric drum turns slowly round. The weeds are caught by a mould and are poured out into a bag and thereby separated from the grain.