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:
Apr. 02, 2002
Filed:
Sep. 08, 2000
Adnan Wahhoud, Lindau/Bodolz, DE;
Lindauer Dornier Gesellschaft mbH, Lindau, DE;
Abstract
A weft thread pre-winder or pre-spooling device for an air jet loom includes a thread storage drum ( ) made up of several drum segments ( ) that are each adjustable in the radial direction so as to adjust the diameter and circumference of the thread storage drum. Thereby the amount of stored thread can be adjusted. Open gaps or interspaces ( ) are formed between respective adjacent drum segments ( ), and become larger or smaller depending on the radial adjustment of the segments. Especially for threads that form only a small thread balloon while being drawn-off from the thread storage drum, the threads would tend to get into these interspaces and become caught on the edges or corners of the drum segments, which would lead to energy losses in the thread and interfere with the proper weft insertion and thread transport. To prevent these problems, a protective disk ( ) is fixedly or rotatably arranged on or near the endface of the drum ( ) on the drawing-off side thereof, and the weft thread ( ) is drawn over the outer circumferential edge of the disk ( ), which thus prevents the threads from getting into the interspaces ( ). The diameter of the disk ( ) is substantially matched to the adjusted diameter of the drum segments ( ).