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:
Jan. 27, 1981
Filed:
Jun. 18, 1979
Applicant:
Inventor:
Ralph E Johnson, Convent Station, NJ (US);
Assignee:
The Singer Company, Stamford, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
D05B / ; D05B / ;
U.S. Cl.
CPC ...
1121 / ; 112221 ;
Abstract
A zig-zag sewing machine is provided with a compensating link and slide which engage on curved surfaces extending in a circular arc that has its center in line with the link. The compensating link and slide are situated between a crank and needle bar and move relative to each other during zig-zag operations to modify the operating effect of the crank and cause a needle to be similarly positioned relative to a vertical axis hook for loop taking in alternate zig-zag positions of the needle bar.