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Paper Cutter and Feed

IP.com Disclosure Number: IPCOM000094964D
Original Publication Date: 1965-Jul-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Wiederhold, GL: AUTHOR

Abstract

A web of paper is fed from the supply roll by a pair of clutched metering rolls into a loop extending from a tear bar, i.e., V-knife, to a pair of continuously running tear rolls. When a predetermined length of web projects beyond the tear bar, the metering rolls are declutched causing the paper loop to be shortened to the point where the outer edges of the web are tensioned at the ends of the tear bar. The paper tears toward the middle as the tension in the web shifts from each edge toward the middle. The knife is so shaped that, as the tearing progresses, the line of tear is a straight line. Other arrangements employ skewed rolls or a skewed rod to increase tension from one edge of the web to the other.

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Paper Cutter and Feed

A web of paper is fed from the supply roll by a pair of clutched metering rolls into a loop extending from a tear bar, i.e., V-knife, to a pair of continuously running tear rolls. When a predetermined length of web projects beyond the tear bar, the metering rolls are declutched causing the paper loop to be shortened to the point where the outer edges of the web are tensioned at the ends of the tear bar. The paper tears toward the middle as the tension in the web shifts from each edge toward the middle. The knife is so shaped that, as the tearing progresses, the line of tear is a straight line. Other arrangements employ skewed rolls or a skewed rod to increase tension from one edge of the web to the other.

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