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:
Oct. 26, 1993
Filed:
Apr. 10, 1992
Yasushi Baba, Tokyo, JP;
Shiro Satoma, Tokyo, JP;
JUKI Corporation, Tokyo, JP;
Abstract
An overlock sewing machine is provided with means for driving a lower looper according to a plurality of different oscillational movements independently of each other, a clutch mechanism for changing the aforementioned movements from one to the other mode, a back and forth drive mechanism for moving a lower looper back and forth, a mechanism for transmitting movement of the back and forth drive mechanism to a lower looper and releasing transmission of the movement therefrom, a lower looper oscillating means for oscillatively moving a lower looper, a mechanism for releasing oscillational movement of the upper looper therefrom, and a motion change-over device for interchanging operation between the clutch mechanism, the transmission and release means, and oscillational movement release means. The arrangement permits conversion of various stitch formations in a sewing machine to take place in a simple manner without requiring complicated adjustment.