Browse Prior Art Database

FRICTION RETARD WHEEL INDEXING MECHANISM

IP.com Disclosure Number: IPCOM000024077D
Original Publication Date: 1979-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 210K

Publishing Venue

Xerox Disclosure Journal

Abstract

In some friction retard type feeders, the retard wheel is either stationary and requires manual adjustment to replenish the friction surface or is indexed through some external drive means (driven by either a separate motor or through an independent drive train). In this disclosure, the retard wheel is advanced by utilizing motion imparted by the feed belt, The rotational displacement of the retard wheel is controlled by means of a pawl and ratchet mechanism.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 96% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

FRICTION RETARD WHEEL INDEXING MECHANISM
Douglas C. Berner
Donato D. Evangelista

Proposed Classification
U.S. Cl. 355/3 SH

mt. Cl. G03g 15/00

7/

In some friction retard type feeders, the retard wheel is either stationary and requires manual adjustment to replenish the friction surface or is indexed through some external drive means (driven by either a separate motor or through an independent drive train). In this disclosure, the retard wheel is advanced by utilizing motion imparted by the feed belt, The rotational displacement of the retard wheel is controlled by means of a pawl and ratchet mechanism.

Retard wheel 5 has a pin 6 that extends into a slot 7 in cogwheel 8. The length of slot 7 in cogwheel 8 determines the amount of indexing of retard wheel 5. One end of a torsion spring 9 is fixed to retard wheel 5 and the other to cogwheel 8. Torsion spring 9 is used to advance cogwheel 8 when pressure on paw! 11 is released when the feeder stops. Pawl 11 is reset and stops movement of the cogwheel 8 at startup while retard wheel 5 is indexed forward in the direction of feed by the feed belt 10 during the first portion of the feed cycle until spring 9 tensions. Retard wheel 5 is

then stationary. When feeding is terminated, spring 9 unwinds to index retard wheel 5 to a fresh position.

Volume 4 Number 4 3uly/August 1979 511

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

Page 2 of 2

XEROX DISCLOSURE JOURNAL

512 Volume 4 Number 4 July/Augu...