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:
Jun. 16, 1987
Applicant:
Inventors:
Karl-Ludwig Manuel, Kaiserslautern, DE;
Werner Striegler, Kaiserslautern, DE;
Assignee:
Pfaff Industriemaschinen AG, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ; D05B / ; D05B / ;
U.S. Cl.
CPC ...
112153 ; 112221 ; 112309 ;
Abstract
A sewing machine with a workpiece alignment device for the automatic stitching of workpieces with convex edge sections has a stepwise feed mechanism and an alignment tool operating alternately with the feed mechanism. The tool rotates the workpiece around the axis of the needle when the needle pierces the material, and holds it resting against a guide rule. The alignment tool is driven by drive mechanisms positively connected to one another, because of which the sewing machine can be operated at a relatively high speed.