Method and apparatus for starting a thread in open-end spinning devices
AssigneeSchubert & Salzer Maschinenfabrik Aktiengesellschaft
InventorsHans Landwehrkamp, Heinz Niestroj
Life of this patent
Estimating the term…
Abstract
When spinning is to be started or restarted after interruption, an operator places a combination spool support and electronic pack on tracks at the spinning station, locates the pack in spool-supporting position, electrically connects the pack with a spinning station connection, draws a predetermined length of thread from the takeup spool, inserts it into the drawoff tube, and actuates a switch on the pack. The pack contains an electronic timing circuit, which sequentially effects starting of the fiber supply to the spinning chamber, and, after a predetermined time delay, effects reengagement of the thread takeup spool with its drive roller.
Claims12
Apparatus for automatically actuating components for spinning startup at a spinning station having a spinning chamber, a thread drawoff opening, a thread tension detector, a thread-winding spool engageable with drive means, a sliver feed and fiber-resolving device, electromagnetic means for interrupting sliver feed, and an electric circuit connecting the electromagnetic means and the thread-tension detector in response to loss of tension in the thread, which apparatus comprises a pack for carrying retractable supporting means for holding the winding spool out of engagement with its drive means, means biasing said supporting means into retracted position, means for projecting said supporting means into spool-holding position, means for latching said supporting means in projected position in opposition to said biasing means, electrically-operable latch-releasing means, switch means for actuating said latch-releasing means, and timing means connected between said switch means and said latch-releasing means for delaying actuation of said latch-releasing means a predetermined time after actuation of said switch means.
Apparatus for automatically actuating components for spinning startup at a spinning station having a spinning chamber, a thread-winding spool, drive means for said thread-winding spool, means actuatable for connecting said thread-winding spool with the drive means, a sliver feed and fiber-resolving device, means for interrupting sliver feed, means for feeding thread back to the spinning chamber and means for actuating said thread back-feed means, which apparatus comprises a pack for carrying control means for effecting in a predetermined sequence deactuation of the sliver feed interrupting means, actuation of the thread feed-back means and actuation of the connecting means for the thread-winding spool and the drive means.
Dependencies are inferred from the claim text.