Process and device for the automatic adjustment of rotational speed ratios between operating elements of a draw frame

A process for automatically adjusting the rotational speed ratios among rotating operating elements of a draw frame by controlling the total required power supplied to the operating elements, the required power effecting the rotational speed and torque of the operating elements, said process comprising the steps of:

• providing two separate power capacities for each rotating operating element, one of the power capacities being delivered in a constant magnitude and the other capacity being delivered simultaneously in a selectively variable magnitude;
• superimposing the selectively variable magnitude power capacity on the constant magnitude power capacity to achieve a resulting power capacity;
• and
• transmitting the resulting power capacity to the operating element wherein it is possible to automatically adjust the rotational speed ratio between operating elements by individually varying the selectively variable magnitude power capacity of respective operating elements while maintaining the constant magnitude power capacity constant for all operating elements.