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. 21, 1992
Filed:
Mar. 22, 1991
Applicant:
Inventors:
Hanspeter Vogel, Steckborn, CH;
Nicklaus Wacker, Steckborn, CH;
Assignee:
Fritz Gegauf Aktiengesellschaft, Steckborn, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112241 ; 112247 ;
Abstract
A regulating mechanism for needle thread between a standard thread tensioning device in the head of the upper arm of a sewing machine and the eye of the reciprocable needle employs a lever-shaped takeup member which is oscillated in the head in synchronism with the movements of the needle, and a wire spring which is mounted directly on the takeup member. The spring has a U-shaped thread engaging portion which surrounds and cooperates with a hook-shaped arm of the takeup member to define a passage for needle thread. The spring tensions the thread during certain stages of each stitch forming step.