Method for the metered insertion of weft yarn into a series shed weaving machine

A method of inserting weft yarn into a shed formed by a series shed weaving machine, the weaving machine including a metering apparatus, comprising the steps of establishing a desired speed profile for the insertion of the weft yarn into the shed;

• presetting the speed profile prior to the insertion of the weft yarn into the shed;
• forming a fluid flow into the shed;
• entraining the weft yarn in the fluid flow to thereby advance the weft yarn into the shed;
• and controlling a speed with which the weft yarn is inserted into the shed independent of and at a location upstream of the fluid flow so that the weft yarn is inserted into the shed at a controlled speed and is subjected to tension, the speed controlling step including the step of varying an insertion speed of the weft yarn into the shed with the metering apparatus.

A method of inserting weft yarn into a shed formed by a series shed weaving machine, the weaving machine including a metering apparatus, comprising the steps of forming a fluid flow into the shed;

• entraining the weft yarn in the fluid flow to thereby advance the weft yarn into the shed so the weft yarn is inserted into the shed in first and second insertion phases;
• controlling a speed with which the weft yarn is inserted into the shed independent of and at a location upstream of the fluid flow so that the weft yarn is inserted into the shed at a controlled speed and is subjected to tension;
• the speed controlling step including the step of varying an insertion speed of the weft yarn into the shed with the metering apparatus;
• the step of varying comprising the steps of increasing a weft yarn insertion speed during the first insertion phase and reducing the weft yarn insertion speed during the second insertion phase.