Browse Prior Art Database

Sheet Handling Apparatus

IP.com Disclosure Number: IPCOM000090779D
Original Publication Date: 1969-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Waldman, TJ: AUTHOR

Abstract

The apparatus is for transporting individual sheets of paper and stack-stacking them in a tray. Sheets moving in the direction of arrow 10 are deflected or turned upwardly by pickup guide 11 formed of polished wire. The sheets are moved vertically by a plurality of transversely spaced apertured belts 14. These are entrained about upper and lower guide rolls 12 and 13 and maintained in taut relation by spring-biased tension rolls 15. Positioned directly behind belts 14 is plenum 16 that is connected with a source of vacuum 17. The vacuum holds the sheets to belts 14.

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Sheet Handling Apparatus

The apparatus is for transporting individual sheets of paper and stack- stacking them in a tray. Sheets moving in the direction of arrow 10 are deflected or turned upwardly by pickup guide 11 formed of polished wire. The sheets are moved vertically by a plurality of transversely spaced apertured belts 14. These are entrained about upper and lower guide rolls 12 and 13 and maintained in taut relation by spring-biased tension rolls 15. Positioned directly behind belts 14 is plenum 16 that is connected with a source of vacuum 17. The vacuum holds the sheets to belts 14.

Positioned at the entry end of the apparatus is limit switch 18 which is actuated by a moving sheet. When the trailing edge of the sheet releases switch 16, solenoid 20 is energized to rotate paper kicker assembly 21 clockwise. Assembly 21 includes wire frame 22 and a pair of pivoted and elongated kicker shoes 23. These are normally received in the spaces between and behind belts
14. Shoes 23 engage the sheet and forceably move it from belts 14 to tray 28. Limit switch 24 is engaged by lever 26 when assembly 21 is in its retracted position. Limit switch 27 is positioned to be engaged and actuated by lever 26 when a predetermined number of sheets is stacked in tray 28.

The operation of switches 18, 26, and 28 is monitored to terminate the feeding of sheets to the sheet handling apparatus under certain faulty conditions. Among the conditions detected are whether switch 18 retur...