US1391872A - Carbon binder and economizer - Google Patents

Description

J. A. WHITE.

CARBON BINDER AND ECONOMIZER.

APPLICATION FILED FEB. :3, 1920.

1,391,872. e e sept- 27, 1921.

2 SHEETSSHEET I.

PatentedSept. 27, 1921.

2 SHEETS-SHEET 2.

UNITE STATES PATENT OFFICE Josnrn mm warm, or CHICAGO, rumors, nssrenon To a s. WEBSTER comrmr, or nos'ron, mssncnusnrrs, A CORPORATION or uessncnfisn omen anion-awn nconomznn Patented Sept. 27,1921.

Application ma February 13, 1920. Serial No. 858,463,

To all whom it may concern:

Be it known that I, Josnrn A. WHITE, a citizen of the United States, residing at Chicago, in the county of Cook and-State of Illinois, have invented an Improvementm Carbon Binders and Economizers, of which the following is a specification.

This invention relates to a method of typewriting duplicates and to means for lengthening the life of or economizing the fragile carbon sheets employed in preparmg dupllcates. V

In this specification I. refer to the sheet nearest the type, which receives the impression from the ribbon as the original sheet. According to the present practice, by which the first carbon sheet is next to the original sheet, the carbon sheet rapidly deteriorates and ordinarily will make but relatively few duplicates before being worn out by the blows ofthe type. By the use of my invention, however, I am able to increase the working life of the carbon sheets to an extraordinary de ee, so that with the use of high grade car on paper I canobtam more than one hundred impressions, whereas without the use of myinvention, even With the best of paper, it is difiicult to obtain as hi h as thirty impressions.

lily invention comprises placing a protective sheet between the original sheet and the first carbon sheet.

The protective sheet may be of any suitable material and Japan vellum paper, and

light tracing cloth have been found to be very effective in greatly extending the life of the carbon sheets.

The protective sheet must not be so heavy as to prevent the necessary clearness of the impressions made by the carbon sheets, and must therefore, suitably transmit the blows of the type and yet be sufficiently tough to withstand the blows and cutting action of and be impenetrable to the type until the.

carbon paper has been used to the desi ned extent. The Japan vellum paper and lght weight tracing cloth above referred to are admirably suited for the purpose.

I assemble the protective sheet and carbon sheets in a unitary pack which I term a car bon binder and economizer in which the several sheets are adapted to receive between them the sheets on which-the impressions are recorded, with the protective sheet sheet with their impression and on topof the carbon sheet is placed the "'I-protective sheet 12. The top edge of the interposed between the original and the first carbon sheet.

In building up such a pack I find it desirable to arrange a backing sheet upon which I place the deslred number of carbon sheets w1th their impression faces downward. On top of the carbon sheets I place the protective sheet. The backing sheet is then folded over the carbon sheets and the rotective sheet and the entire pack is stitched or otherwise fastened at the top preferably for its entlre length.

In use the sheets to receive the impressions are placed between the carbon sheets in the usual manner and the original sheet is placed over the protective sheet and tucked under the flap of the backing sheet, and the entire pack is placed m the typewriting machine in the normal manner.

My invention is particularly valuable when used in connection with the carbon binder and economizer for the reason that it is difficult otherwise to use the carbon sheets enoughtimes to get the full benefit of my invention, because of the wrinkling and tearmg of the carbon sheets by handling them many times. The carbon binder and economizer holds the sheets in their proper place and avoids the necessity for repeated handling thereof, and protects them against inur igure 1 is a view of a carbon binder and economizer embodyin my invention.

Fig. 2 is a view 0 a economizer embodying my invention especially adapted for billing.

- Fig. 3 is a detail illustrating the relative arrangement of the protective sheet and carbon sheets when the binder is filled for use.

Fig. 4 is a longitudinal sectional elevation of the binder and economize-r of Fig. 1.

As here shown my invention is associated with the carbon binder-and economizer having the backing sheet 10 of any suitable material and dimensions. A plurality of carbon sheets 11 are received on the backing backing' sheet is turned over the top edges 0f1'tl1epi bteCtiVe and carbon sheets and the entire packis secured together at the top by stitching 13. The reflexedend of the backcarbon binder and faces downward ing sheet extends over the protective sheet as 11*, 11 and 11. 1 sheet 11- extends from one edge onl 20.

below the line of stitchesto provide a flapthe original and duplicates may all be 14 between which and the protective sheet, grasped between the thumb and a finger the original paper sheet is adapted to bewithout also grasping the carbon sheets, for I received and retained'for typewriting.

My invention is especiall' valuable for the work of billing and in ig. 2, I have removal from the binder. I

I claim:

i 1. 'A carbon'binder comprising a sheet of illustrated a binder and economizer with carbon paper and a superposed separate my protectivesheet embodied therein especsheet of vellum which rotects the carbon ially adapted for this work. The backing sheet from ,being cut by f the type, both sheet, the protective sheets and the carbon fastened to etherat their top edges.

sheets are arranged as usual but some of the 2. A car on binder comprising a sheet carbon sheets may be incomplete, that is of, backing paper and a sheet of vellum they may not extend the entire width of theNvhich protects the carbon paper from being binder and economizer. The first carbon cut by the type, the backin sheet and velsheet, for instance, while extending the enlum sheet havin stitched tween them a tire width of the device, is longitudinally sheet or sheets 0 carbon paper.

slit-to form in effect three carbon sheets The second carboncarbon -paper and a superposed, separate about type im enetrable, type-blow-transmitting to the middle of the binder, and 0t er car sheet, w ich protects the carbonsheet from bon sheets extend in from one edge to an being cut by the type, both fastened together even less distance. By this arrangement at'their top edges certain of the duplicate or impression sheets 4. A carbon binder comprising a backing mayhave certain data, as columns of numsheet, one or more sheets of carbon pa er, 25

3. A carbon binder comprising a sheet of hers, omitted while such data may appear and a top type-impenetrable, type-b ow on other duplicate sheets. i transmitting sheet which protects the carbon Fig. 3 clearly illustrates'the manner "of paper from cutting by the 7 type, all united using the binder and economizerembodying at their top edges in the order named. my lnvention. Theduplication or impres-- 5. carbon binder'comprising a backin sion sheets a are alternately disposed with sheet and a sheet of tyPe-resistin materia the carbon sheets 11 and theoriginal sheet which protects-the carbon paper rom being I) is tucked under the flap 14 over the procut by the type, said backing sheet and protective sheet 12.

- The binder. with sheets assembled therein .a sheet or sheets of carbon. paper. is placed in the typewriting machine and the In testimony whereof, "I have signed my typing operation is carried out in the usual nameto this specification, in the presence of manner. two subscribin witnesses.

The bottom edges of the backing sheet, OSEPH ADIE WHITE. and the protective sheet and the carbon Witnesses:' I sheets ma have alined notches or thumb EDWARD M. Krrrmamr, spaces 16 t erein, as shown in Fig. 1 whereby C. S. Rronsnnson.

tective sheet having stitched between them

Images