Application of a foamed treating medium to a sheet-material workpiece
OwnerMathias Mitterinventor
Life of this patent
Estimating the term…
Abstract
An applicator for applying a foamed treating medium to a sheet-material workpiece has a chamber through the open top of which the foamed medium is introduced, and an open bottom through which the foamed medium is discharged towards the workpiece to be treated. To assure that the upper surface of the foamed medium in the chamber is always maintained at a constant level, an equalizing member extends across the open top of the interior of the chamber, and a drive is provided which reciprocates or otherwise moves the equalizing member relative to the open top so as to smooth out any portions of the foamed medium which extend upwardly beyond the desired level.
Claims25
An applicator for applying a foamed treating medium to a sheet-material workpiece, particularly a fibrous textile, comprising first means bounding a chamber having an open top and an open bottom;
- means for supplying foamed treating medium into said chamber via said open top so that the treating medium is discharged towards a workpiece by way of said open bottom;
- level equalizing second means extending across said chamber in the region of said open top;
- third means for displacing said second means relative to said chamber in said region so as to maintain the foamed medium in said chamber at a uniform upper level;
- and means for sensing the upper level of foamed treating medium in said chamber and for interrupting the admission of additional foamed treating medium via said open top when the sensed upper level is above a predetermined level.
Dependencies are inferred from the claim text.