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Browse Prior Art Database

Bottom of the Bin Surfaces

IP.com Disclosure Number: IPCOM000048308D
Original Publication Date: 1982-Jan-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Fallon, JL: AUTHOR [+3]

Abstract

A number of movable members for the bottom of a paper bin are disclosed. These members facilitate reliable feeding of the last few sheets by a wave generator or combing wheel sheet feeder.

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Bottom of the Bin Surfaces

A number of movable members for the bottom of a paper bin are disclosed. These members facilitate reliable feeding of the last few sheets by a wave generator or combing wheel sheet feeder.

The performance of a wave generator paper feeder, such as is shown in U.S. Patent 4,126,305, may change as the thickness of the stack of sheets decreases. More specifically, the last few sheets, say, the last ten sheets, may be difficult to feed one at a time, unless a movable and compliant bottom of the bin surface is provided.

Fig. 1 shows a roller 10 which is free to rotate about axis 11.

This roller may be somewhat smaller in diameter than is wave generator paper feed wheel 12. The top surface of roller 10 is substantially tangent to the bottom surface 13 of the paper bin upon which the stack of sheets resides. Wheel 12 is shown in side view and is driven counterclockwise about axis 14. Axis 14 is loaded down onto the stack of sheets. Roller 10 rotates about an axis which is parallel to axis 14.

In Fig. 2, a belt 20 is supported by idler rollers 21 and 22. Roller 21 rotates about a fixed-position axis, whereas the axis of roller 22 may be moved parallel to bin bottom 23 in order to adjust belt tension. The axes of rollers 21 and 22 are parallel to axis 14.

Fig. 3, which shows a front view of wave generator wheel 12, provides one or more discs 30 which are free to rotate about axis 31.

The rotational axis 14 of wheel 12 and axis 31 are perpendicula...