roller gin
/ˈrəʊlə ˌdʒɪn/Manufacturing Technology
noun
A cotton gin in which the removal of the cotton seeds is effected by a roller or rollers.
- Early forms of roller gins used two rollers rotating in opposite directions. Modern ones use a single roller against which a knife blade is pressed..
Origin
Early 19th century; earliest use found in Anthony Willich (fl. 1778–1802). From roller + gin.