Patent ID: 6135163
Filing Date: 2000-10-24
Classification: D03D

Abstract:
A backrest arrangement for a loom, comprising:a backrest beam that is supported to oscillatingly rotate about a backrest axis and that has a cylindrical outer backrest surface with a backrest radius (r.sub.1) about said backrest axis; andfirst and second warp tensioning modules that are mounted respectively on said backrest beam;wherein said first warp tensioning module has a first warp guide surface that extends over a first angular range of less than 180.degree. relative to said backrest axis and that protrudes radially outwardly beyond said cylindrical outer backrest surface to a maximum first surface radius (r.sub.5) greater than said backrest radius (r.sub.1) relative to said backrest axis;wherein said second warp tensioning module has a second warp guide surface that extends over a second angular range greater than said first angular range relative to said backrest axis and that protrudes radially outwardly beyond said cylindrical outer backrest surface to a maximum second surface radius (r.sub.3) different from said maximum first surface radius relative to said backrest axis; andwherein at least one of said warp tensioning modules is axially repositionable along said backrest beam along said backrest axis and selectively removable from said backrest beam.