What is the use of a paddy weeder?

Paddy weeder does the weeding operation when the seedlings are transplanted in rows. The implement has an inclined long handle. At the fool of it two conical cylinders with serrated lugs on its periphery are fixed. These two conical serrated cylinders can rotate freely about it axis and placed in opposite sides. A steel plate has been into the loose soil and assists in easy operations. In operation, the see rated lugs cut and burry the weeds and some of the weeds are wound on the surface of the cylinders, which can be removed manually.