Browse Prior Art Database

WIRE STITCHER

IP.com Disclosure Number: IPCOM000023778D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 183K

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 rolls 1, 2. In order to provide for two or more stitch (staple) leg lengths, one of the rolls is selectable from a bank of such rolls, for example 2, 2a. These rolls are each displaced circumferentially relative to their neighbors. A desired leg length may be selected by adjusting the bank to engage the correct feed roll and this may be

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XEROX DISCLOSURE JOURNAL

WIRE STITCHER

ProposedRon Stokes Classification

U~SCL 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 rolls 1, 2. In order to provide for two or more stitch (staple) leg lengths, one of the rolls is selectable from a bank of such rolls, for example 2, 2a. These rolls are each displaced circumferentially relative to their neighbors. A desired leg length may be selected by adjusting the bank to engage the correct feed roll and this may be

achieved automatically, for example, in response to set thickness.

In order to avoid the spool/dancer assembly withdrawing the wire at the end of a positive forward drive and during selection, a back-up ratchet device 3 is provided.

Volume 4 Number 1 January/February 1979 3

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