Patent ID: 6524444
Filing Date: 2003-02-25
Classification: D21G

Abstract:
In a paper machine having a roll rotating about an axis extending in a cross machine direction, and having a doctor blade applied to the roll surface by a blade holder parallel to said axis and carried on a doctor back, an apparatus for accommodating relative movement between the blade holder and the doctor back in the cross machine direction during mounting and removal of the blade holder, said apparatus comprising:a rail fixed to the doctor back and extending longitudinally in the cross machine direction; a groove in said rail extending along the length thereof, said groove having a bottom, a width measured between confronting sides, and a top defined by ledges projecting inwardly from said sides, said ledges having inner edges spaced one from the other to define a slot underlying said blade holder and having a width narrower than the width of said groove; a plurality of shafts spaced along the length of said blade holder and projecting downwardly therefrom through said slot and into said groove; and first and second independently rotatable elements carried by each of said shafts, said first rotatable elements being located in said slot and being dimensioned to contact the inner edges of said ledges, and said second rotatable elements being located in said groove and being dimensioned to contact the undersides of said ledges.