Device for regulating the tapering of the sides of textile packages

A device for regulating a tapering of at least one side edge of a package of yarn on a spool in a winding apparatus, wherein a spool-holder arm is supported rotatably by a frame of said winding apparatus and is driven to rotate when a thickness of the package of yarn on said spool increases, and wherein the spool supporting the package of yarn is made to rotate around its own longitudinal axis while a yarn guide member moves reciprocally and parallel to said longitudinal axis of said spool for distributing said yarn onto said spool;

• said device for regulating the tapering of said at least one side edge comprising:
• cam means for driving a variation of a stroke of said yarn guide member in order to regulate the tapering of said at least one side edge of the package, which said cam means are connected with said spool-holder arm for rotating therewith;
• transmission means for operatively connecting said cam means to said yarn guide member for driving the variation of the stroke of said yarn guide member, said transmission means having an element sliding on said cam means when said cam means rotates with said spool-holder arm;
• said cam means including at least a first and a second cam contour, each for driving a respective different tapering of the at least one side edge of said package of yarn;
• said first and second cam contours being arranged parallel to each other, in which said sliding element of said transmission means is mobile perpendicularly to said first and second cam contours;
• and
• means for positiioning said sliding element of said transmission means on a selected contour of said cam contours.