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:
Jul. 16, 2002
Filed:
Jan. 11, 2001
Franz Machnik, Göppingen, DE;
Zinser Textilmaschinen GmbH, Ebersbach/Fils, DE;
Abstract
To improve the breaking of a roving between a pressing finger bed and a fully wound bobbin preliminary to a bobbin change, the roving is initially wound around the tube above the upper cone and an unwound roving reserve is formed from at least a half turn on the upper winding cone and the body. A false twist is generated to provide a weakened region so that the roving has a first segment extending from the upper edge of the upper winding cone to the lower edge thereof, a second segment extending to the weakened zone and a third segment extending from the weakened zone to the pressing finger bed. The false twist increases the number of twists per unit length in the first segment and decreases the number of twists per unit length in the second and third segments. The pressing finger is moved along the bobbin periphery and the roving is broken at the weak spot by further movement of the pressing finger relative to the bobbin.