The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 1992
Filed:
Sep. 27, 1990
Bruno Maina, Valdengo, IT;
ROJ Electrotex S.p.A., Biella, IT;
Abstract
In a measuring weft feeder for fluid jet looms, the continuity of the weft yarn from the feed spool or reel to the main nozzle of the loom is automatically restored by two compressed air devices acting on the weft yarn, the first of which--positioned at the inlet of the weft feeder, to withdraw therefrom the broken yarn and introduce therein new yarn fed by the spool or reel--comprises a first duct connected to the inlet of the weft feeder, along which duct there are positioned a clamp, a nozzle and a cutter. A second duct branches off from the first, close to its outlet into the weft feeder, which also comprises a nozzle, while the second device--positioned adjacent to the weft feeder drum, to receive the new yarn fed by the first device and by the winding arm and send it to a fixed point for feeding the main nozzle of the loom--comprises a curved profiled duct, which is either open or adapted to open longitudinally towards the drum and has an aerodynamic guide for the yarn. A third compressed air device can also be provided, to act on the weft yarn is sent from the second device so as to facilitate its feeding into the main loom nozzle, this third device also comprising a duct wherein acts a nozzle as well as an air outlet.