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US 4,602,579 AGranted
Apparatus for tensioning and controlled advancing of a tube-like sewing article
AssigneeDurkoppwerke GmbH
InventorsKonrad Pollmeier, Philipp Moll, Wolfgang Goebbels
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Abstract
An apparatus for tensioning and controlled advancing of tube-like articles includes at least one stationary roller and a non-stationary roller which is movable by a slider in order to tension the waist of an article pulled over the rollers. Depending on the position of the slider when having tensioned the article, the speed of one of the rollers is controlled to allow the sewing of belt loops in controlled distances onto the article.
Claims14
Apparatus for tensioning and controlled transporting of a tube-like article to be sewed and having a variable waist size, comprising:
- a support;
- first stationary conveying means on said support and supporting part of the article in a sewing area;
- second conveying means arranged on said support at a distance from said first conveying means for supporting another part of the article;
- shifting means on said support for moving said second conveyor means with respect to said first conveying means so that a waist of the article provided over said first and second conveying means is tensioned when said shifting means moves said second conveying means away from said first conveying means and occupies a corresponding position;
- driving means for advancing one of said first and second conveying means once said second conveying means is moved away from said first conveying means;
- and
- control means for actuating said driving means in such a manner that the speed of said one of said first and second conveying means is in dependence upon the instantaneous position occupied by said shifting means.
4 more elements
Dependencies are inferred from the claim text.