Method and apparatus for joining yarn or thread ends

A splicing head for joining two yarn or thread ends, the head being of the type having a turbulence chamber therein and means for supplying fluid under pressure into the chamber, the head comprising

• means defining an insertion slot for inserting the yarn or thread ends into the turbulence chamber,
• and wherein the turbulence chamber comprises
• means defining first and second frusto-conical chamber portions pointing in opposite directions.

A method for splicing two yarn or thread ends in a splicing head of the type having a turbulence chamber for receiving the ends to be spliced together wherein the ends are treated by a centric pressure medium flow comprising at least two partial flows such that the ends are subjected to turbulence and are twisted together to form a joint, including

• providing a turbulence chamber which includes two adjoining, partially separated chamber portions,
• introducing one of the partial flows tangentially into one end of the chamber portions and the other partial flow tangentially into the other chamber portion, and
• guiding each of the partial flows along a generally lemniscate-like path from one chamber portion to the other so that the flows along the paths are in the same circular directions in each chamber portion.