Browse Prior Art Database

Rotary Document Stacker

IP.com Disclosure Number: IPCOM000076166D
Original Publication Date: 1972-Jan-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Souba, CH: AUTHOR

Abstract

A document stacker receives documents fed on edge and stacks them in a manner that their trailing ends can fan out without restricting the entry area. The stacker permits stacked documents to be unloaded while documents continue to enter the stacker.

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Rotary Document Stacker

A document stacker receives documents fed on edge and stacks them in a manner that their trailing ends can fan out without restricting the entry area. The stacker permits stacked documents to be unloaded while documents continue to enter the stacker.

Feeder 10, Fig. 1, feeds documents 15 on edge as they are held in contact with perforated belt 11 by vacuum in chamber 12. The documents are casted into the entry area formed by entry guide 20 and side plate 25 with sufficient velocity to engage cylindrical backstop 30 fixed to rotary table 35. Side plate 25 is attached to center post 40 and as documents come between guide 20 and side plate 25, table 35 rotates incrementally due to the pressure of the document against side plate 25. As table 35 rotates, pressure against side plate 25 is relieved and table 35 stops under action of constant force friction break 45 until it is again incremented by another incoming document. The trailing end of a document in the process of being stacked is deflected out of the way of the leading end of an incoming document, by air pressure piped through guide 20 by assembly 50. A document kicker spring could be used instead of the air pressure to deflect the trailing ends of documents.

Side plate 25 can be hingeably attached to center post 40, as shown in Fig. 2, so that it can be pivoted to a new position, for example, from position A to position B in Fig. 1 to permit unloading of the portion of stacked documents...