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:
Aug. 24, 1982
Filed:
Jul. 25, 1980
Friedrich Kuhn, Heidenheim, DE;
J. M. Voith GmbH, , DE;
Abstract
A double-drum winder including means for changing winding cores is disclosed. Two support drums are separated by a first gap, through which a web is fed from below. A roll, comprising a winding core and part of the web wrapped around it, rests on both drums. The web follows the surface of the first drum through the first gap, to the point of contact between the first drum and the roll. At least one drum is driven, wrapping the web onto the roll. When the roll is complete, it is lifted and simultaneously moved toward the second drum, opening a second gap between the roll and the first drum. A holding device, which is preferably rotated into position about the second drum through the first gap, holds the web against the first drum. A severing device severs the web. The severing device preferably is rotated about the first drum through the second gap to effect the severing. Because the roll is lifted toward the second, rather than the first drum, the web is stretched between the roll and the point at which the web is held against the first drum, facilitating the severing of the web. A new winding core is then introduced, preferably through the second gap, and the end of the web being held against the first drum is attached to it.