The Biology Of The Monotremes

High-speed cross-winding apparatus with two traverse motion devices for winding elongated materials, especially continuous filaments, into packages, particularly at filament velocities exceeding 1500 m/min., and embodying a reciprocable thread guide with a spirally grooved drive roller as a first traversing device, and s second traversing device in the form of a roller with spiral, thread-guiding grooves, the thread running over the latter grooved roller in an arc of at least 60 DEG , the first and second traverse motion devices being driven synchronously, and a drive roller for driving the package being driven independently thereof. The grooves of the latter traverse roller have variable depth for winding tension uniformity, and also temporarily accelerate and reverse stroke velocity above the stroke velocity of the first traverse device before and/or after stroke reversal. The guide groove of the roller of first traverse device has a greater pitch before and/or after stroke reversal, and an enlarged radius of stroke reversal curvature.