Patent ID: 6068736
Filing Date: 2000-05-30
Classification: D21F

Abstract:
A headbox for a paper-making machine, said headbox including an inlet for receiving a fiber suspension, said headbox comprising:an apron and an upper wall converging relative to each other and defining a machine wide discharge nozzle and an outlet therebetween, said discharge nozzle terminating at said outlet;a slice lip carried by said upper wall, said slice lip positioned at said outlet and including a working edge defining an outlet gap with said apron, said slice lip being slidably movable a travel distance in directions toward and away from said outlet gap, anda slice lip clamp assembly connected to said upper wall and having a width, said slice lip clamp assembly engaging said slice lip and biasing said slice lip against said upper wall, said slice lip clamp assembly including:a plurality of clamping plates, each said clamping plate having an opening with an inside diameter, each said clamping plate also including an aperture;a single, continuous plate extending substantially across said width of said slice lip clamp assembly and over each said opening of said clamping plates, said plate having a plurality of through holes;a plurality of fasteners, each said fastener having an outside diameter, said inside diameter of each said opening of said clamping plates being larger than said outside diameter of each said fastener by an amount which is dependent upon said travel distance, a number of through holes of said single plate corresponding to a number of said fasteners, each said fastener extending through a corresponding said through hole and corresponding said opening and being attached to said upper wall; anda plurality of bolts, each said bolt extending through a corresponding said aperture of a corresponding said clamping plate and attaching said corresponding clamping plate to said slice lip.