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. 31, 1998
Filed:
Aug. 12, 1997
Yamato Mishin Seizo Kabushiki Kaisha, Osaka, JP;
Abstract
A looper thread take-up apparatus which is mounted on a position away from a sewing machine bed, on the side facing a needle drop point of a leg portion for supporting the base end of a sewing machine arm on the machine bed with a thread take-up cam fixed on a rotating shaft which is projected from the side face of the leg portion and is interlocked with a sewing machine main shaft within the machine bed or with the upper shaft within the machine arm, where the looper thread take-up cam is rotated synchronously with the vertical motion of the needle at the nose of the machine arm, and with the advancing and retreating operations of a looper within the machine bed, thereby to make supplementary operations easier such as setting of the looper thread, adjusting of the loosening extent or the like without interference with the sewing operation.