Browse Prior Art Database

Rotating Arm for Picker Roller

IP.com Disclosure Number: IPCOM000086172D
Original Publication Date: 1976-Aug-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Thigpen, TE: AUTHOR

Abstract

Shown is a device for allowing a picker roller to move to the paper, to forward individual sheets to a separator-restraint roller combination. This differs from the usual or conventional design which would use an elevator of some sort to keep the paper supply at the picker roller.

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Rotating Arm for Picker Roller

Shown is a device for allowing a picker roller to move to the paper, to forward individual sheets to a separator-restraint roller combination. This differs from the usual or conventional design which would use an elevator of some sort to keep the paper supply at the picker roller.

Initially or at rest, the picker roller 1 sets on the paper supply A spring 2 keeps pawl 3 pivoted out of tooth engagement with the ratchet section of the rotating arm 4 after stop arm 5 contacts stop 6. The spring 2 also restores the plunger of solenoid 7 to its nonenergized position.

At the start of a pick cycle, all rollers are driven clockwise. The weight of the rotating arm 4 and picker roller 1 is of such a value combined with the appropriate coefficient of friction of the roller surface to paper, that when activated the roller 4 will move a sheet of paper to the separating/restraining area, which uses a conventional separator roller 11 and restraint roller 12. In case several sheets are picked, single sheet separation is performed here.

At the instant paper sensor 8 acknowledges paper in its area, solenoid 7 is picked. The initial motion of the solenoid is used for seating the pawl 3 into the teeth of the ratchet of rotating arm 4. After engagement, the remaining travel of the plunger is used to raise the still rotating picker roller 1 off the paper supply. After the trailing edge of the paper has been sensed by the sensor 8, power to all rollers an...