Patent ID: 6868660

Claim:
A process for the pneumatic splicing of threads or yarns containing an elastomer or with a high torque, characterized in that it comprises at least the following phases, in succession: introduction into a splicing chamber ( 11 , 110 ) belonging to a splicer ( 10 , 100 ) of thread-ends ( 12 , 15 ) to be joined to each other; withholding by friction of the thread-ends ( 12 , 15 ) by means of friction elements or devices ( 27 , 20 , 21 ) close to or inside the splicing chamber ( 11 , 110 ); cutting of the thread-ends ( 12 , 15 ) by means of cutting devices ( 18 , 19 ); opening of said thread-ends ( 12 , 15 ) cut by means of preparation units ( 22 , 23 ); pulling of said cut and opened thread-ends ( 12 , 15 ) in the direction of said junction chamber ( 11 , 110 ) according to the arrows (F); expulsion of said threads ( 12 , 15 ) from said friction elements ( 27 , 20 , 21 ) and contemporaneous entry of one or more jets of compressed air into the above chamber ( 11 , 110 ) to effect the splicing of said thread-ends ( 12 , 15 ) and releasing of the spliced thread with the return of all the units of the splicer ( 10 , 100 ) to their initial position.