Patent ID: 6516497
Filing Date: 2003-02-11
Classification: D01G

Abstract:
In a fiber processing machine includinga clothed roll having a direction of rotation and entraining fiber material thereon; a roll cover circumferentially partially surrounding said roll and defining an annular clearance therewith; a transfer opening provided in said roll cover for admitting fiber material to said roll; a waste discharge opening provided in said roll cover for removing waste from said clearance; a fiber removal opening provided in said roll cover downstream of said waste discharge opening as viewed in said direction of rotation; and first means for generating an air stream for doffing fiber material from said roll and for discharging doffed fiber material through said fiber removal opening; the improvement comprising: (a) second means for varying a strength of said air stream at said fiber removal opening; and (b) third means for varying the extent of waste removal through said waste discharge opening.