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:
Aug. 12, 1980
Filed:
Jan. 08, 1979
Boleslaw Kornatowski, Elizabeth, NJ (US);
The Singer Company, Stamford, CT (US);
Abstract
An automatic bobbin winding system for lockstitch sewing machine having the capability to wind needle thread around said bobbin while said bobbin is supported within the looptaker of the sewing machine wherein a depleted condition of the bobbin is sensed causing the work feed system to be disconnected, the bobbin winding system to be enabled and endwise reciprocation of the needle bar to be suspensed after needle thread is introduced into the bobbin winding system in order to fully wind the bobbin supported within the looptaker. When the bobbin is completely wound, a full bobbin sensing device is activated which terminates the bobbin winding, reinitiates the work feeding system and the endwise reciprocation of the sewing needle in order to continue stitching at that point where bobbin thread depletion was first sensed.