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Browse Prior Art Database

WIRE STITCHER

IP.com Disclosure Number: IPCOM000025703D
Original Publication Date: 1987-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 93K

Publishing Venue

Xerox Disclosure Journal

Abstract

In the drawing Figures, a wire stitcher 3 for on or off line stapling that is significantly more compact, less complex, and less expensive than current stitchers is shown. Stitcher 3 is capable of stapling two to sixty (or more) sheets, and incorporates an active bypass clinch to provide flat, finished stitches.

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XEROX DISCLOSURE JOURNAL

WIRE STITCHER Classification Proposed William E. Kramer U.S. C1.227188

Int. C1. B25c 3/04

4

,3 f- 7

20

16

Volume 12 Number 3 May/June 1987 133

[This page contains 1 picture or other non-text object]

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WIRE STITCHER (Cont'd)

In the drawing Figures, a wire stitcher 3 for on or off line stapling that is significantly more compact, less complex, and less expensive than current stitchers is shown. Stitcher 3 is capable of stapling two to sixty (or more) sheets, and incorporates an active bypass clinch to provide flat, finished stitches.

The wire 4 is fed into a hole 5 and hard stopped against a fixed edge 6 at the far end of hole 5. Wire feeding is accomplished by a spring loaded arm that is re-tensioned by a cam surface perpendicular to the cam assembly 7. As a result, wire feed is accomplished by two opposing one-way devices, one of which retains the wire in the stitcher head and the other of which allows for re-tensioning of the spring loaded wire feeding arm and subsequent wire feeding.

The wire 4 is sheared and formed over a mandrel 8 by a reciprocating sheadforming punch 9, the latter being driven by arm 10. Arm 10 is driven from a cam track on cam assembly 7 which bends the arm 10 with a force sufficient to shear the wire. Simultaneously, another cam track of cam assembly 7 applies force against a clamp spring arm 15 to actuate clamp 16 and clamp the sheets being stitched in opposition to the stitcher driving force.

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