Patent ID: 6272831
Filing Date: 2001-08-14
Classification: B65H

Abstract:
An operating cart for a spinning frame which joins a yarn at a spinning unit when a yarn breakage occurs, comprising:a package, provided in the spinning unit, having a yarn layer surface upon which spun yarn is being wound;an air blowing yarn end retrieval device, for retrieving a yarn end, having an air blowing mouth pivotally connected to said operating cart, said air blowing mouth comprising a pair of oppositely arranged plate-shaped members, nozzles provided on surfaces of said plate-shaped members, and an opening section formed between said plate-shaped members at an end section of said air blowing mouth; andsaid end section of said air blowing mouth directing a compressed airflow ejected from said nozzle against the yarn layer surface of said package, so that the compressed airflow produces an accompanying airflow, which is pulled along with the compressed airflow and which increases its speed to merge with the compressed airflow and is discharged from said opening section,wherein said accompanying airflow, before merging with said compressed airflow, operates upon the yarn layer surface, and after merging, said compressed airflow operates upon the yarn layer surface, causing a yarn end to be lifted off the yarn layer surface.