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:
Jun. 05, 1984
Filed:
Apr. 19, 1982
Edilberto Cantada, East Brunswick, NJ (US);
Anthony D Spasiano, Old Greenwich, CT (US);
The Singer Company, Stamford, CT (US);
Abstract
A basting stitch mechanism in which a latch is carried on the side of the needle bar carrier and is fashioned with a front portion extending in front of the needle bar terminating in a wedge, which wedge fits into a notch in a driving stud hinge pin extending about the needle bar and slidable thereon. The latch wedge connection to the driving stud eliminates the requirement for establishing a clearance between the needle bar carrier and the driving stud carrying the driving stud hinge pin. An extension spring connected between the sewing machine frame and a rear portion of the latch operates to increase the latching force as the needle bar is moved downwardly. By proper design of the wedge on the latch and the notch on the driving stud hinge pin, separation of the driving stud hinge pin from the latch may take place at some force designed to avoid breakage of the sewing needle.