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:
May. 05, 1981
Filed:
Jun. 05, 1979
Kazuo Suzuki, Oohasuhigashi, JP;
Hirokazu Koda, Gose, JP;
Kenichi Nakamura, Nara, JP;
Syuich Yoshikawa, Nara, JP;
Naoki Ohara, Aichi, JP;
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
The present invention is directed to an electric sewing machine provided with a button hole sewing device which comprises a plurality of cams each individually bearing information of tacking stitches, left side stitches of a button hole and right side stitches of the button hole, means for instructing button hole stitching operation and an electric control circuit arrangement which operates to select the cam for tacking stitches upon operation of the instructing means and to select the cam for one of the side stitches automatically after a predetermined number of the tacking stitches are perfected.