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:
Dec. 06, 1988
Filed:
Feb. 10, 1987
Hans H Hauser, Horgen, CH;
Arthur Rebsamen, Sellenburen, CH;
Walter Slavik, Horgen, CH;
Hans Landwehrkamp, Lenting, DE;
Schubert & Salzer Maschinenfabrik Aktiengesellschaft, Ingolstadt, DE;
Abstract
When a thread (10) supplied at a constant speed is wound onto a cross-wound bobbin (11), the variations in thread tension are compensated, and in addition predetermined thread-tension limiting values are prevented from being exceeded as a result of a change in the winding-on speed. A first regulating system (96) is provided for compensating periodic variations in the thread tension, while a second regulating system (51) is provided for compensating shifts in the range of thread tensions. The second regulating system is designed as a variable step-up gear (5), the drive part (60) of which is connected to a drive shaft (4) extending over several spooling stations. The output part (62) of this step-up gear (5) is connected to the spooling roller (3), the drive part (60) being connected to the output part (62) by means of a transmission member (61) which determines the gear ratio at any particular time and which is adjustable as a function of the thread tension. The drive part (60) and the output part (62 ) are both designed as cone wheels, between which the transmission member (61) is continuously adjustable. The transmission member (61) has assigned to it an adjustable basic position and a return device (89) for returning to a basic position determining the maximum step-up ratio.