Browse Prior Art Database

Document Platform Raising Device

IP.com Disclosure Number: IPCOM000095240D
Original Publication Date: 1965-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 67K

Publishing Venue

IBM

Related People

Taylor, CE: AUTHOR

Abstract

In order to feed documents one at a time from the top of a stack of documents, it is necessary to maintain the uppermost document within a height range to enable the documents to be fed properly. Thus, after a predetermined number of documents is fed, it is necessary to raise the stack of documents to again bring the uppermost document to the proper level.

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Document Platform Raising Device

In order to feed documents one at a time from the top of a stack of documents, it is necessary to maintain the uppermost document within a height range to enable the documents to be fed properly. Thus, after a predetermined number of documents is fed, it is necessary to raise the stack of documents to again bring the uppermost document to the proper level.

Arm 11 of switch 10 normally rests against the uppermost document 15 of a stack of documents contained upon hopper platform 20. Platform 20 slides up and down on guide shaft 21. Stub shaft 22 projects from 20 and carries both coupling sprocket 23 and coupling ratchet 24. Sprocket 23 has arcuate opening
25. Pin 26 projects from the side of 24 through opening 25. Sprocket 23 coacts with drive chain 30 trained about an idler sprocket 31 and drive sprocket 32. Sprocket 23 can be held against rotation by latch 27 normally urged by spring 28 to engage ratchet 24. Thus, whenever latch 27 is engaged with 24, 23 is held against rotation and, as 30 moves, platform 20 is elevated. Platform 20 can be manually raised or lowered by releasing latch 27 from ratchet 24.

Chain 30 is driven by sprocket 32 fixed to ratchet 33, both being journaled on shaft 34. Ratchet 33 is driven by pawl 35 carried by drive arm 36 which also carries cam follower 37. Arm 36 is operated by continuously rotating cam 38 only when armature 39 is moved from its latching position as magnet 40 is energized. Spring 41 func...