US1670822A - Binder for carbon paper - Google Patents

Description

May 22, 1928. 1,670,822

' L. A. PHILLIPS BINDER FOR CARBON PAPER Filed Nov. 23, 1926 I nm zn Leland hil/fps -vide means in l at ented May 2 2, 1928.

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' man ron. cannon run.

' Application fled. Iovember 2:, 1m. sum 10.150387.

' I The object ofthisinvention is to provide a new and improved binder for carbon paper, one that can be readily fed behind the platen of a typewriter or other writing and copyin machine. Another object of this invention is to construct this binder so that different grades or colors of carbon paper sheets may be automatically brought together each 'in a predetermined place with relation to the others and then bound into the binder.

Another object of this invention is to provide an uncoated strip on each of the carbon sheets overhanging the binder to allow the carbon sheets to be readily picked up previous to the insertion of the copy paper without soiling the fingers in doing so.

Another object of this invention is to proboth the carbon sheets and the binder to allow a quick withdrawal of a the original as well as copy sheets from the binder.

These and other objects of the invention will be fully illustrated in the drawing, described in the specification and pointed out in the claims at the end thereof.

In the accompanying drawing:

Figure 1 is a perspective view of the improved carbonjpaper binder with the original and copy sheets inserted therein.

Figure 2 is a longitudinal sectional view of the binder illustrated in Figure 1.

Figure 3 is an enlarged sectional view of a corner of the binder made up with more than one carbon sheet.

Figure 2:- is adiagrammatic view of the method of making the carbon binder.

In the several figures of the drawing like reference numerals indicate like parts.

In manifolding copies on a typewriter or other writing and copying machine'such as bookkeeping machines, it is the common practice at the present time to alternately place the loose paper sheets and carbon sheets togther and then line them up with relation to each other; As the carbon sheets are usually very thin it is diflicult to get these sheets in proper alignment with each other. it is especially troublesome to get the paper sheets in place when the carbon sheets have been used before and-have lost some of their stiffness. The more the loose sheets of carbon paper are handled the more they are mussed up, lose their coating an soil the fingers so that much of the coating is lost due to the manual handling of each of p the carbon sheets, besides what is lost in wntm Whilecarbon sheet binders have hereto ore been made and sold, their construction has been such as to 'make their use impractical and their cost of manufacture'so high as to practically prohibit their use in COITIIKGtItIOII with the loose carbon sheets.

e binder and its construction forming the subject matter of this invention eliminates the drawbacks of earlier attempts to market such a binder in that applicant s construction in making it insures a low cost due to the fact that quantity production is 05- sible at low cost and the manner in w ic' h 10 the binder is made permits also the ready insertion and use of it in the typewriter or other machine.

It will be readily understood that carbon paper sheets when bound into a binder will e serviceable much longer than loose carbon sheets because the back of -.the binder keeps the sheets flat and protects the coated s1de against contact with everything except the copy paper that is placed underneath it. As illustrated in'the figures of the drawing each binder COIISlStS of the backing sheet 1,

the carbon sheet or sheets 2 .and the binding strip 3. A small strip 4 at the bottom of the carbon sheet and overhanging the bottom of the backing sheet is not coated so that the carbon sheet can be lifted by means of this strip without placing the fingers in contact with the carbon coating of-the carbon paper. 'lhe upper edge of the carbon sheet extendmg underneati the bindin strip 3 is preferably also left uncoated which serves to reduce the thickness of the upper edge of the complete carbon binder especially one contaming more than one sheet of carbon paper.

Both the carbon sheet or sheets and the backing sheet are notched preferably at the lower'right hand corner as illustrated at 5 and 6 respectively so that the sheets of record paper placed into the binder can be gripped by the fingers in this notch without gripping either the carbon sheet or the backing sheet. In this way the top record sheet as well as the manifold copies thereof can be ripped and simultaneously pulled out of t 1e binder without having to individually separate the paper sheets from carbon sheets;

The binding strip bon sheet or sheets 2 and to the backing (1 sheet 1 and is located on top of the binder so that a portion of its outer edge overhangs both the carbon sheets and the backv platen the binder is easily gripped by it and ing sheet. When therefore all of the sheets making up the binder are fastened together there is a thin edge of a single thickness provided at the top of the binder, which when fed behind the roller plate of the typewriter will extend far enough behind the' platen so that on the rotation ofthe roller fed into position. The topv edge of the binder is thus made wedge shaped which is necessar in order to have. the binder feed behir the roller platen.

The seam 7 formed by stitching the binding strip to the carbon sheets and backing sheet serves as a stop against which the top paper sheet as well as the manifold copy sheets are placed when inserting these sheets into the binder. The seam is straight and parallel with both the top and bottom 0% the binder so that the paper sheets inserted 'into the binder and, resting against the seam are properly located with relation to each other and to the binder without having to line them 11 after they have been placed 'into the bin er.

The fact that the binding strip is fastened as a separate strip to the binder makes it possible to employ a method that will make the binder automatically at such a rapid rate of speed that quantity production of the binder is possible at low cost. This quantity production reduces the cost of making the binder to such a low figure that in View of the many advantages secured by the binder it can compete with carbon sheets furnished unbound without the binder.

While l[ have shown and described the binder as being assembled by means of thread, the fact that a strip at the upper edge of the carbon paper is left uncoated makes it possible to appl an adhesive to the carbon paper and the backing sheet and binding strip and assemble the binder by means of an adhesive instead oi a thread.

ll claim:

1. A carbon binder comprising a backing sheet, a carbon sheet, a bindin strip, means for fastening said sheets toget er with said binding strip overlapping said backing sheet at one end and said carbon sheet overlapping'said backing sheet at the other end.

2. A carbon binder comprising a backing sheet, a carbon sheet and a binding strip fastened to ether at one end, an uncoated strip provided onsaid carbon sheet and overhangin ,said backing sheet at the bottom, said 'inding strip overhanging the bound edge of said carbon sheet to form a thin wedge in front thereof.

3. A carbon binder comprising a backing sheet, a carbon sheet and a binding strip, an uncoated strip provided at one end of said carbon sheet overhanging said backing sheet, an uncoated strip rovided at the other end of said carbon s eet and located above said backing sheet and means for fastening said binding stri to said backing sheet with said uncoated strip located be tween them and with a portion of said binding strip overhanging the bound edge of said uncoated strip to form a thin wedgein front thereof, the overhanging portion of said binding strip and the uncoated portion of the carbon sheet serving to reduce the thickness and form a wedge on the top of the binder that is adapted to be easily passed under the roller platen of a typewriter.

4. A carbon binder comprising a backing sheet, a carbon sheet, a bindin strip, means for fastening said sheets togeiher with said binding strip overlapping said backing sheet at the bound end and said carbon sheet overlapping said backing sheet at the free end, eac o said carbon sheets being notched at the bottom of the sheets to allow the paper sheets inserted into the binder between the carbon sheets to be gripped and withdrawn from the binder at one operation.

5. A carbon binder comprising a backing sheet, a carbon sheet on top of said backing sheet, a binding strip made up of a single thickness of thin paper stock located on top of said carbon paper and stitched to said carbon paper and said backing sheet to tasten the binding strip, carbon sheet and backing. sheet together on top of one another at one end thereof, said binding strip projecting beyond the stitched ends of said carbon sheet and backing sheet to cover the end of the carbon sheet and backing sheet and form a thin starting Wedge for said binder.

In testimony whereof I aifix my signature.

LELAND A. PHILLIPS.

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