APPAREIL POUR APPLIQUER UN MATERIAU DE TRAITEMENT A UN MATERIAU TEXTILE

An apparatus for applying a foamed treatment material such as size to a textile material such as threads as the latter passes between a pair of drive rollers includes a frame which forms a pocket for the size above the rollers with the rollers forming the bottom of the pocket. A guide projects down into the pocket toward the line of contact between the drive rollers and the threads pass through a passage in the guide so that the threads are shielded from the size in the passage and only the lengths of thread between the lower end of the guide and the drive rollers are exposed to the size. In order that the application of size to the threads is comparatively uniform, the guide is raised and lowered in response to the speed of travel of the threads so that longer lengths are exposed at faster speeds and shorter lengths are exposed at slower speeds.