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:
Nov. 06, 1984
Filed:
Jan. 07, 1983
Applicant:
Inventors:
Wolf R von Hagen, Hemmingen, DE;
Erwin Jurgens, Hemmingen, DE;
Assignee:
Union Special G.m.b.H., Stuttgart, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ; D05B / ;
U.S. Cl.
CPC ...
112200 ; 112165 ; 112227 ;
Abstract
A mechanism for seizing and holding a thread, particularly the looper thread, of a chainstitch sewing machine to insure needle penetration of the thread triangle thereby assuring enchaining of the needle thread with the looper thread. Such mechanism includes an oscillatable thread spreader which transversely moves across the looper's endwise path of travel. The spreader motion being in timed relation with the stitch forming instrumentalities such that its effectively travel extends between the looper eye and the reciprocal path of the needle arranged closest to the looper eye when the looper is at its extreme loop seizing position.