Rieter

Traveler shape

Index

The shape of the traveler must coincide exactly with that of the  ring flange, so that only one contact surface – which should be as large as possible – exists between the two units. The top of the traveler arc should also be as flat as possible in order to keep its center of gravity low and enhance smooth running. Both of these factors have a significant influence on the traveler speed that can be achieved. However, the flat arc shape must still leave sufficient space for thread passage. If this space is too small the thread rubs on the ring, which results in napping of the thread, high production of fiber fly, reduced quality and the formation of melt points in manmade fibers.

The following traveler shapes (basic shapes) are in use in short staple spinning (Fig. 36):

a) C travelers
b) flat or oval travelers
c) elliptical travelers
d) N travelers
e) and the ORBIT travelers shown in Fig. 34.

The wire profile also influences running behavior, i.e. through:
  • the contact surface on the ring
  • smooth running
  • heat dissipation
  • thread passage space
  • and certain yarn properties:
  • sloughing resistance
  • hairiness.

Fig. 37 shows several profile shapes (Bräcker)

Fig. 36 – Traveler shapes: a, C traveler; b, flat traveler (standard traveler); c, elliptical traveler; d, N traveler

Fig. 37 – Wire profiles for ring travelers