US1761106A - Carbon pack and sheet-form holder - Google Patents

Description

June 3, 1930. K. R. DENCKLAU 1,761,106

CARBON PACK AND SHEET FORM HOLDER Filed Oct. 1929 2 Sheets-Sheet 1 Inventor MP1. 1? JI/I/(VKZAU.

Attorney June 3, 1930. K. R. DENCKLAU 1,761,106

CARBON PACK AND SHEET FORM HOLDER Filed Oct. 1, 1929 2 Sheets-Sheet 2 jta 5. r y 551 2; 15" i: i

Inventor $09.70-

EZ K142; K Jaw/mm 4 A iiorney Patented June 3, 1930 PATENT orrlcs KARL B. DENOKLAU, OI PLAIN'FIELD, NEW JERSEY CARBON PACK AND SHEET-FORK HOLDER Application filed October 1, 1929. Serial Ho. 888,452.

This invention relates to improvements in carbon packs and sheet form holders for use in typewritersand other analogous printing machines wherein duplicate copies of the original to be printed are desired.

0 copy or form sheets are interposed and held against shifting, the said back strip being foldable intermediate the carbon packs as to assume a stacked formation preparatory to the seating of the respective packs into the typewriting machine.

Another object of the invention is to provide a continuous backing strip on which carbon packs are carried at spaced distances in between which the form sheets or tickets may be inserted, and means for permitting all of the tickets or form sheets to e grasped and rapidly pulled from between the carbon sheets so as not to injure the carbon sheets whereby the said strip may again be used by the insertion of new form s eets or tickets for those removed, and by which the life of the carbon sheets is extended, thus effecting a saving over the present method of dispensing with the carbon sheets after but 0 one use of the same.

A further object of the invention is the provision of a carbon pack of the kind mentioned wherein lithograph forms may be used which is impracticable in the present construction of continuous carbon packs wherein the form sheets or tickets are rinted on continuous strips, which printing is performed on the circular shaped type set illustrated in the accompanying drawings, 1n which:

Figure 1 is a perspective view of my improved carbon pack showing the same folded in stacked formation.

Figure 2 is a vertical longitudinal sectional view.

Figure 3 is an enlarged detail sectional elevational view showing the hinged joint between the respective form sections.

Figure 4 is a detail vertical sectional view taken at the fold between two adjacent sections. Y

Figure 5 is a reatly enlarged vertical transverse sectiona view.

Figure 6 is a fragmentary plan view of the folding joint between two adjacent sections.

Figure 7 is a greatly enlarged vertical transverse sectional view on the line 77 of Figure 6.

Figure 8 is an enlarged detail sectional view on the line 88 of Figure 6.

Figure 9 is a fragmentary perspective new of the uppermost carbon sheet.

Figure 10 is a detail sectional view showing a slight modification of hinged joints between two adjacent form sections.

Referring to the drawings by reference characters, the numeral 10 designates a flexible elongated strip which may be of any desired sound deadening material, and which strip is scored transversely at even spaced distances therealong as at 11 to divide the strip into a plurality of contiguous sections which are foldable in a zig-zag manner into stacked formation as clearly shown in Figures 1 and 2 of the drawing. Each foldable section may be termed a frame or unit and in view of the fact that all of the said sections or units are identical, a description of one will suflice for all.

Each unit or frame has its longitudinal side edges turned inwardly as at 12 and 13, respectively, while disposed beneath the inturned edge 12 are one of the side edges of a plurality of carbon sheets 13, the said sheets being fixedly held in position by removable fastening elements 14 which pass through the inturned edge or flange 12 and carbon sheets to secure the said sheets in the holder or back strip 10. A transverse strip 15 is secured to the back strip 10 to form. the bottom of each frame or unit while carried by the back strip adjacent the top of each section is a flexible bendable tongue 16 which is adapted to pass through the opening 17 provided in the extending tab 18 carriedby the outermost carbon sheet 13. The tab is provided with a recess 19 for receiving the bent over portion of the tongue 16' so that the said tongue is countersunk with the top surface of the tab as not to interfere with the insertion of the strip in a typewriter or other printing machine. It mi ht be mentioned that the staples 14 may 1i ewise be countersunk for the same reason as the tongue 16 and to also maintain a relatively even thickness throughout the unit.

The strip 10 intermediate the respective frames or units is provided with openings 20 while the top of the carbon sheets 13 are cut away as at 21 so as to aline with certain walls of the openings as clearly shown in Figure 6 for a purpose to be presently explained. Interposed between the carbon sheets 13 are the copy sheets or tickets 22, while overlying the outermost carbon sheet is the original copy sheet 23 to which a rear copy sheet 2 1 is connected, the joint between the back copy sheet 24 and the front original sheet 23 being perforated to enable the two to be separated upon removal of the origi nal and copies from the pack. When the original sheet 23 and the copy sheets have been positioned relative to the carbon sheets, the side edges abut the inner edges of the inturned portions 12 and 13 of the flexible strip and together with the carbon copy they form a thickness equal to the thickness of the longitudinal side edges of the pack will flatly pass over the platen or roller of the typewriting machine.

To insert the copy sheets 23 intermediate the carbon sheets, the tongue 16 is bent up to enable the carbon sheet to be opened up similar to a book, whereupon the copy sheets may be inserted and the tongue 16 bent down into engagement with the tab 18 as clearly shown in Figure 8 of the drawing. By fastening the free edges of the uppermost carbon sheets, the inserted copy sheets are held against accidental shifting and separation relative to the carbon sheets; Assuming that the original and copy sheets are in the position shown in the drawings and just described, and the carbon pack is inserted into a .typewriting machine, the machine is operated to type the necessary information upon the original copy 23, thus producing carbon copies upon the insert sheets 22. After the. necessary matter has been printed, the operator inserts the thumb and forefinger of the hand through the opening 20 at the top of the pack and proceeds to grasp the front and back sheets and pulls upward upon the same whereupon all of the copy sheets are simultaneously removed Without disturbing the fastening means b which the carbon sheets are held to the strip 10. The platen of the typewriter may now be operated in the usual manner in order to bring the next carbon pack into position with respect to the platen of the typewriter by constructing the back strip 10 of a sound deadening material, the noise incident to the striking of the keys of the typewriter upon the carbon pack is greatly reduced. Such a carbon pack as has been shown and described .will be found most useful in preparing invoices and bills where several carbon copies together with an original are to be prepared. It will be noted that the carbon sheets may be used over and over again until sufiiciently worn as to be of no further value as blank copy sheets may be inserted in the respective holders after the type sheets have been removed therefrom. Should the carbon paper become worn, the same may also be replaced by removing the fastening elements or staples 14 and substituting new carbon sheets therefor and by replacing the said fastening elements. Although fastening elements in the nature of staples have been shown, other such removable devices such as stitching may be used if desired.

For the purpose of accommodating the carbon pack in typewriting machines having a tooth Wheel feed, I provide the longitudinal edges of the strip with equidistantly spaced openings 25 which openings receive the teeth of the wheel during feeding of the strip through the machine. This serves to prevent possible shifting of the strip during passage through the machine.

From the foregoing description it will be seen that I have provided a continuous carbon pack in which no time is lost in disposing of the carbon after removal of the copies of the printed sheets from the machine and wherein the life of the carbon sheets is extended thus effecting a great saving in the cost of carbon paper.

While I have described what I deem to be the most desirable embodiment of my in-- vention it is obvious that many of the details may be varied without in any way departing from the spirit of my invention, and I therefore do not limit myself to exact details of construction herein set forth, nor to anything less than the whole of my invention, limited onl by the appended claims.

Having thus escribed the invention, what I claim as new and desire to secure by Letters Patent is 1. A combined carbon pack and sheet form holder comprising a back strip of foldable material, and carbon pack units fixedly secured along one of the sides of said back strip at'spaced intervals therealong so that the opposite side and edges of each carbon pack unit are free for the insertion of form sheets or tickets therebetween.

2. A combined carbon pack and sheet form holder comprising a back strip of foldable material, carbon pack units fixedly secured along one of the sides of said back strip at spaced intervals therealong so that the opposite side and edges of each carbon pack unit are free for the insertion of form sheets or tickets therebetween, and means for detachably securing the free side edge of the outermost carbon sheet to the ad- .jacent side edge of said back strip for bolding the inserted form sheets or tickets in,assembled position.

3. A combined carbon pack and sheet form holder comprising a back strip of foldable material, carbon pack units fixedly secured along one of the sides of said back strip at spaced intervals therealong so that the opposite side and edges of each carbon pack unit are free for the insertion of form sheets or tickets therebetween, means for detachably securing the free side edge of the outermost :carbon sheet to the adjacent side edge of said back strip for holding the inserted form sheets or tickets in assembled position, said means including a tab ex tending beyond the free edge of said outermost carbon sheet, and a bendable tongue carried by said strip and extending through an opening provided in said tab and adapted to be bent flat against the tab.

4:. In a combined carbon pack and sheet form holder, a flexible back strip having one of its side edges bent inwardly over upon itself, a plurality of alined carbon sheets having one of the side edges disposed beneath the inwardly turned edge of said strip, means 'for fixedly securing said carbon sheets beneath said inturned edge, and means for detachably securin the opposite edge of the outermost carbon s eet to the adjacent edge of the said strip.

5. In a combined carbon pack, a flexible back strip, carbon pack units fixedly secured to said back strip at spaced intervals along one of the side edges thereof, means for de tachably securing the free edge of the outermost carbon sheets to the adjacent edge of said back strip for securing said carbon sheets downagainst said strip, said strip having openings therein intermediate said carbon pack units, the tops of the carbon sheets of the said units being cut away to aline with certain of the walls of said openings, substantially as and for the purpose specified.

6. In a combined carbon pack and form holder, an elongated flexible strip embodying a plurality of alternatel foldable sections to enable the strip to be folded in a zig-zag manner into stacked formation, and sheets of carbon paper secured along one edge of said sections for the insertion of copy sheets therebetween.

7. In a combined carbon pack and form holder, an elongated flexible strip embody-'

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