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US 4,356,603 AGranted
Method for introducing a yarn into a pneumatic yarn texturing means
AssigneeRhone-Poulenc-Textile
InventorsBernard Biot, Charles Blanc
Life of this patent
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Abstract
A method for introducing yarn into a pneumatic yarn texturizing means, in which the yarn is positioned across the inlet orifice of the texturizing means, a stream of fluid is forced against the yarn to introduce it into the orifice in the form of a loop and a yarn cutting device, located downstream of the orifice in the direction of movement of the yarn, is actuated, its operation being synchronized with that of the fluid stream.
Claims7
A method of introducing at least one yarn into an inlet orifice of a pneumatic yarn texturizing means, said method comprising the steps of:
- leading the yarn at a high speed from yarn feed means along a path across the inlet orifice of the yarn texturizing means wherein said path is at right angles to the axis of the orifice;
- cutting the yarn downstream of the orifice to form a free end for introduction into the texturizing means;
- impinging a highly pressurized stream of fluid on the yarn, the stream of fluid substantially perpendicular to the yarn, while cutting the yarn to propel a portion of the yarn occurring upstream of the free end thereof into the orifice solely under the influence of said pressurized stream;
- forming a loop of yarn solely under the influence of said pressurized stream;
- propelling the loop of yarn into the orifice of the texturizing means solely under the influence of said pressurized stream with the free end trailing;
- and
- thereafter drawing the yarn into the texturizing means for processing.
4 more elements
Dependencies are inferred from the claim text.