Theory of Uniform conicity

Cone:- Cone is a special kind of package which is conical in shape

Taper angle:- taper angle is the angle made between surface of package and x axis

In this kind of package the diameter should not be same throughout the length of the package so to get same thickness at all the points on the package to maintain the uniform conicity, hence to make the conical package more amount of wrapped on the base side in single traverse Because we know that the amount of wrapped yarn is directly proportional to the diameter of the package at that points.
Thus, we can change the amount of yarn placed at base and nose side by manipulating speed, by manipulating angle of groove in a black driving drum.
So we will make angle of grooves in such a way that angle is more at base side and less at Nose side so during winding the yarn will stay more time at base side ( thus, more length of a yarn can be wrapped) and stay very less time at nose side ( thus less no of yarn can be wrapped ) to maintain the uniform same value thickness 't' i.e, maintain the same value tapper angle and hence maintain the uniform conicity thus the conical package is obtained.