Browse Prior Art Database

Device for Feeding Envelopes from Bottom of Large Stack

IP.com Disclosure Number: IPCOM000108579D
Original Publication Date: 1992-Jun-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 93K

Publishing Venue

IBM

Related People

Brown, CG: AUTHOR

Abstract

Disclosed is a method for assisting a large stack of correspondence envelopes to be fed from the bottom of this stack, into a machine, such as an office printer. A stack of 500 such envelopes is about 12" to 16" in height and weighs about 5 pounds.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Device for Feeding Envelopes from Bottom of Large Stack

       Disclosed is a method for assisting a large stack of
correspondence envelopes to be fed from the bottom of this stack,
into a machine, such as an office printer.  A stack of 500 such
envelopes is about 12" to 16" in height and weighs about 5 pounds.

      Usual devices can accommodate up to around 75 envelopes,
because the weight of such a stack prevents the feeder from pulling
the bottom envelope out from under all the weight of those above it.

      Via this disclosure, a new mechanism is introduced within the
envelope stack, so that the usual feeding mechanism does not have to
handle more than about 75 of those envelopes.  The disclosed
mechanism divides the large stack of 500, just before feeding each
envelope, into two zones, a "bottom zone" and an "upper zone".  Any
envelopes in the traditional zone, called "bottom zone" are fed in
the usual way.  Envelopes will fall into the bottom zone via gravity,
from the upper zone.  When the mechanism is not feeding an envelope,
both stacks are combined, as a single stack (that is, stack division
only occurs just before feeding an envelope).

      Because of this, the machine operator does not need to be
concerned about which "zone" to replenish.  When the machine is
"idle", both bins are combined and the operator may fill it up.  If
the machine is working, the operator will fill only the "upper zone",
because the bottom one will probably already have envelopes in it.
The machine will resupply the bottom zone from the upper zone.

      There are several ways of creating and operating the "upper
zone" (see figure).  One is by a device that "lifts" the edges of
these upper zone envelopes, thus removing their weight off the bottom
zone envelopes.  This lift will occur...