Browse Prior Art Database

WIRE STITCHER WITH CONTINUOUSLY RIVEN WIRE FEED ROLLS

IP.com Disclosure Number: IPCOM000023779D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 186K

Publishing Venue

Xerox Disclosure Journal

Abstract

A stitcher for binding sheets into sets or signatures includes a wire feed of the kind in which the wire is advanced step-wiseby a pair of coacting relieved roIls- If the feed rolls are continuously driven, then during the forming of each length of wire the next wire length is being fed. The effect of this is that when the wire length is adjusted, a pre-fed incorrect length is already -up-the-spoutu so that the first

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XEROX DISCLOSURE JOURNAL

WIRE STITCHER WITH CONTINUOUSLY ~RIVEN WIRE FEED ROLLS
Peter Downing
Ron Stokes

Proposed Classification
U.S~CL 85/49

mt CL F16b 15/00

A stitcher for binding sheets into sets or signatures includes a wire feed of the kind in which the wire is advanced step~wiseby a pair of coacting relieved roIls~ If the feed rolls are continuously driven, then during the forming of each length of wire the next wire length is being fed. The effect of this is that when the wire length is adjusted, a pre-fed incorrect length is already ~~up~the~spoutu so that the first staple of the next run is of the wrong length.

To avoid this problem without having to drive the rolls intermittently, which apart from inherent complexity produces shock loads mid-cycle, it is proposed here to use a pair of relieved rolls A, B which are of different sizes and are shaped such that the wire is not engaged during each revolution of the feed rolls, so permitting the feed rolls to be continuously driven~ In the example illustrated, the drive will mesh every two revs of A and three revs of B~

4.

Volume 4 Number 1 january/February 1979 5

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