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, 1976
Filed:
Oct. 15, 1974
William B Keller, Bayside, NY (US);
Owens-Illinois, Inc., Toledo, OH (US);
Abstract
Mechanical self-centering device to center a moving web of thin sheetlike material such as paper, plastic, metal or the like to prevent the web from drifting from side to side as it moves from one mechanical device, such as an unwind stand, to another mechanical device, such as a printing press, coating apparatus, a web splicer, a machine to fabricate finished products from the web such as a cup-making machine, or the like. The self-centering device comprises a roller extending transversely across the path of travel of the web and adapted to rotatingly contact the moving web on one side thereof. The roller is rotatingly mounted in a bracket which is free to pivot about an axis which is spaced from, and which extends generally parallel to, the path of travel of the web. Attached to the roller at points which are spaced apart by a distance slightly greater than the width of the web being processed are raised guides each of which is adapted to be contacted by an edge of the web as the web drifts to the side of the center of its intended path of travel. Such contact will cause the entire bracket to tilt about its axis in a plane extending transversely of the path of travel of the web, and this tilting action will tend to cause the web to return to the center of its path of travel.