Browse Prior Art Database

Slotted Hole Punch

IP.com Disclosure Number: IPCOM000120258D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Barber, IW: AUTHOR

Abstract

Busy executives may give several presentations a week as part of their ongoing business activities. Typically, the presentations are outlined on a series of transparent foils, which are projected onto a screen by means of an overhead projector. As there may be many foils in a given presentation, and several presentations which must be kept organized, it has become convenient to keep the transparent foils in a loose leaf binder. Rather than opening and closing the three ring binder with each foil as the presentation proceeds, slots are cut at the edge of the foil to the three holes in the transparency as shown in Fig. 1. The slots are thin enough that the foils will not fall out of the binder, yet allow the foils to be easily transferred in and out of the binder.

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Slotted Hole Punch

      Busy executives may give several presentations a week as
part of their ongoing business activities.  Typically, the
presentations are outlined on a series of transparent foils, which
are projected onto a screen by means of an overhead projector.  As
there may be many foils in a given presentation, and several
presentations which must be kept organized, it has become convenient
to keep the transparent foils in a loose leaf binder.  Rather than
opening and closing the three ring binder with each foil as the
presentation proceeds, slots are cut at the edge of the foil to the
three holes in the transparency as shown in Fig. 1.  The slots are
thin enough that the foils will not fall out of the binder, yet allow
the foils to be easily transferred in and out of the binder.

      While a three-ring binder is convenient, once the slots and
holes are made in the foils, heretofore, there has been no efficient
means of making the slot and hole combination. In the current state
of prior art, a three-hole paper punch is first used to cut the three
holes, at the edge of the foil.  Next, a pair of scissors is used to
cut each slot individually.  This is a relatively labor intensive
method which can become burdensome upon a secretary who supports
several executives.

      A means of expediting the preparation of foils for use in
three- ring binders is presented by the instant invention.  The
cylindrical dies in a standard three-hole punch can be...