Abstract: The lint from the roller gin stand is divided into two streams and a small portion is recirculated through the feeding equipment so that the lint to seed ratio is increased at the roller gin. The pre-gin equipment acts to distribute and break up not only wads of cotton but also individual locks of cotton into smaller components called individual seed locks. Some seed will be completely separated from lint in this process. This process of preparation of the seed cotton for the ginning will actually partially pre-gin the cotton. It is accomplished by wiping the cotton by spiked rollers over concave segments some of which have projecting bars from them. The cotton is pulled or diverted over separation ridges which project between the rollers.