Apparatus for regulating fiber quantities supplied to a textile machine

In an apparatus for regulating fiber quantities supplied to a textile machine as a fiber layer of indeterminate length and determinate width, including sensor means for mechanically sensing thickness variations of said fiber layer at a plurality of locations along said width and emitting individual mechanical signals representing the magnitude of thickness variations at each location;

• and fiber layer delivery means;
• the improvement comprising
• (a) transducer means connected to said sensor means for converting each individual mechanical signal into an individual electric signal;
• (b) signal adding means connected to said transducer means for combining the individual signals into a joint electric signal;
• (c) regulator means connected to said signal adding means for comparing said joint electric signal representing an actual value with a predetermined desired value of fiber layer thickness for generating a setting signal;
• and
• (d) setting means connected to said regulator means and said fiber layer delivery means for controlling said setting means by said setting signal whereby fiber quantities of said fiber layer are regulated as a function of said thickness variations of said fiber layer.