Method and device for joining an upper thread to a lower thread

US4408442A · kind A · utility

Assignee

• W. Schlafhorst AG & Co. · DE

Inventor

• Joachim Rohner · Wittlich, DE

Key dates

• Filing date: Nov 10, 1980
• Grant date: Oct 11, 1983
• Expiry date: Nov 10, 2000

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H2701/31
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

Method for joining an upper thread with a lower thread, which includes moving at least one thread regulator from a thread receiving position to a thread delivery position, inserting the threads with the at least one thread regulator into a longitudinal groove formed in a splicing chamber, automatically admitting compressed air laterally into the splicing chamber for splicing the threads, automatically separating the ends of the upper and lower threads and blowing compressed air into the splicing chamber in dependence on the position of the at least one thread regulator, separating the threads to form new shorter thread ends, sucking up the newly-formed shorter thread ends with an air stream, and securing the newly-formed shorter thread ends and device for performing the method.