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:
Feb. 02, 1988
Filed:
Feb. 06, 1986
Applicant:
Inventor:
Sumio Goto, Chofu, JP;
Assignee:
Tokyo Juki Industrial Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
112315 ; 112272 ; 112275 ; 11212111 ;
Abstract
An automatic stitch pitch adjusting apparatus for a sewing machine allows the last stitch point to be terminated at a pre-set point. Three workpiece-end sensors are positioned respective a needle hole position to precisely calculate the required actual stitch line length. Reference signals generated by rotation of a main shaft are used to calculate both the required number of stitchings and the adjusted stitch pitch to terminate stitching at the pre-set point. Where the workpiece end line is not normal against the feeding line, the pre-set margin distance is adjusted to calculate the actual required stitching line length to the last pre-set point.