Method and device for joining an upper thread to a lower thread
AssigneeW. Schlafhorst AG & Co.
InventorsJoachim Rohner, Reinhard Mauries, Heinz Zumfeld
Life of this patent
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Abstract
Method and device for joining together an upper and a lower thread, which includes moving at least one first thread feeder from a thread pick-up position to a thread transfer position, inserting the upper and the lower threads into a longitudinal slot formed in a chamber, holding the threads in the slot until compressed air is admitted to the chamber, and at given positions during the movement of the first thread feeder; closing the chamber with a lid, automatically severing the ends of the upper and lower thread and blowing compressed air into the chamber.
Claims18
Method for joining together an upper and a lower thread, which comprises moving at least one first thread feeder from a thread pick-up position to a thread transfer position, inserting the upper and the lower threads into a longitudinal slot formed in a chamber, holding the threads in the slot until compressed air is admitted to the chamber, and at given positions during the movement of the first thread feeder:
- closing the chamber with a lid, automatically severing the ends of the upper and lower thread and blowing compressed air into the chamber.
Apparatus for carrying out a method for joining together an upper and a lower thread, comprising a chamber having a closable, longitudinal, thread-receiving and joining slot formed therein, a compressed-air canal opening into the interior of the chamber, at least one first thread feeder movable from a thread pickup position to a thread transfer position for placing the threads into the longitudinal slot formed in the chamber, and further comprising a lid for temporarily closing off the chamber, thread severing devices for cutting off the ends of the upper and the lower thread, and an adjustable and controllable compressed-air dosing valve disposed in said compressed-air canal, each of which being activatable at a given position of said first thread feeder.
Dependencies are inferred from the claim text.