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Browse Prior Art Database

Elevatorless Paper Supply Utilizing Walking Picker Roller

IP.com Disclosure Number: IPCOM000086587D
Original Publication Date: 1976-Oct-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Klein, WF: AUTHOR [+2]

Abstract

This paper feed eliminates the need for an expensive elevator to raise the paper supply to the paper picker roller.

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Elevatorless Paper Supply Utilizing Walking Picker Roller

This paper feed eliminates the need for an expensive elevator to raise the paper supply to the paper picker roller.

Referring to the figure, the picker roller 1 is held off paper supply 12 by return spring 3. The rotary position of control arm 2 is determined by control link 8, engaged with a particular tooth 15 in control arm ratchet 4 and bottomed out in link slot 13 on link pin 14. Control link 8 is held in engagement with control arm ratchet 4 by link spring 9.

At the start of a pick cycle, picker roller 1 is caused to rotate. Solenoid 5 is pulsed, bringing ratchet drive pawl 6, which is mounted on pawl arm 10 and held against arm stop 11 by pawl spring 7, into contact with a tooth on control arm ratchet 4. This is done through picker spring 18 to ensure a correct normal force of picker roller 1 on paper supply 12. Further solenoid motion rotates control arm ratchet 4 in a clockwise direction, thus bringing rotating picker roller 1 into contact with the top sheet of paper of paper supply 12, and starts movement of the sheet to the left.

At the end of the pick cycle and when solenoid 5 is de-energized, return spring 3 rotates control arm 2 in a counter-clockwise (CCW) direction. At the same time control link 8, through the tooth on control arm ratchet 4, is driven down such that the top of link slot 13 contacts link pin 14 and CCW motion is terminated.

After picking, for instance, 20 to 30 sheets, depen...