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:
Mar. 27, 1984
Filed:
Nov. 17, 1980
William H Dunn, Branchville, NJ (US);
William J Edwards, Cranbury, NJ (US);
Philip F Minalga, Piscataway, NJ (US);
The Singer Company, Stamford, CT (US);
Abstract
For a family sewing machine having the capabilities to complete a buttonhole in a single step, an arrangement is provided to permit an operator to reinitiate the buttonhole operation in the event of a thread breakage in the middle of the buttonhole, however, without necessitating stitching during that part of the buttonhole in which stitching has already been implemented. If a thread breakage takes place and after repair thereof the buttonhole may be repositioned to the initiating position and the buttonhole pattern may be reselected together with, for example, a selection of reverse feeding or any other input which is not normally selected during buttonholing. This dual selection is effective to signal the needle bar release logic to suspend endwise reciprocation of the needle bar. The sewing machine feed proceeds as though stitching were taking place, and just before the point of thread breakage is reached the needle bar release logic can be defeated so that stitching may proceed from a point one or two stitches prior to the point of breakage.