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Document Elevating Hopper

IP.com Disclosure Number: IPCOM000082401D
Original Publication Date: 1974-Dec-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Habich, AB: AUTHOR [+2]

Abstract

Shown is a lifter for presenting cards or documents to a picking mechanism, while keeping the height of the top document a constant amount above the rim of a hopper.

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Document Elevating Hopper

Shown is a lifter for presenting cards or documents to a picking mechanism, while keeping the height of the top document a constant amount above the rim of a hopper.

A reversible motor is attached to a document platform. A worm gear on the motor shaft drives a worm wheel, which rotates on a shaft which is rigidly fixed to the document platform. Attached to each side of the worm wheel are pulleys which drive two timing belts in opposite directions. A pulley and a gear are fixed to a shaft and are rotated by its associated timing belt in bushings, which are fixed to the document platform. The gears mesh with racks which are fixed in the walls of the hopper. Motor rotation causes the gears to travel up or down the racks; therefore raising or lowering the document platform while keeping it level.

If documents of uneven thickness are to be fed from this hopper, a slight modification will compensate for irregular stacking by rotating the platform from its level position as it is lowered, and returned to the level position at a uniform rate as it rises to the top of the hopper. In this way, the document on top of the ever-diminishing stack is kept level so it can be more reliably taken off by a picker mechanism. To produce this effect, an unequal drive ratio would be provided to the two gear pairs so they would climb the racks at slightly different rates. The distance between the racks would be decreased at the bottom of the hopper to insure co...