Abstract:
Process and apparatus for crimping yarns or the like by the action of a heated flowing gaseous medium, the yarns being exposed to the heated flowing gaseous medium in two successive treatment chambers. Yarns of synthetic linear high molecular weight substances can be crimped by means of the process and apparatus according to the invention in a simple way and at high yarn speeds.
Abstract:
Method and apparatus for control of DC motor directly connected to actuating element of control or regulating device with step actuation of motor by pulse modulation in trains of individual pulses whose energy content is varied in dependence on the force requirement to move the mechanical member.
Abstract:
Apparatus for the manufacture of texturized filaments of synthetic linear high molecular weight materials using hot fluids consisting of a closed first processing chamber having an inlet for the fluid, a filament inlet channel at one of said processing chamber, a filament guide channel projecting into the processing chamber from its other end, and a second duct-like processing chamber mounted at the free end of the filament guide channel and having radial slots extending in the longitudinal direction of the duct of said processing chamber, wherein said second processing chamber shows, over its lower portion, a conical or stepwise increase in its external diameter and a sudden increase in its internal diameter to from 2 to 10 times the internal diameter of the duct, the longitudinal slots extending into said enlarged region to terminate in a closed ring.