US2343796A

US2343796A - Carbon pack for manifold typewriters

Info

Publication number: US2343796A
Application number: US449547A
Authority: US
Inventors: Laurence A Petit
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-07-03
Filing date: 1942-07-03
Publication date: 1944-03-07
Anticipated expiration: 1961-03-07

Description

March 7, 1944. A. PETIT 2,343,796

CARBON PACK FOR MANIFOLD TYPEWRITERS Filed July 3, 1942 2 Sheets-Sheet l .@&a.maa

March 7, 1944. L. A. PETIT 2,343,796

CARBON PACK FOR MANIFOLD TYPEWRITERS Filed July 3, 1942 2 Sheets-Sheet 2 ZAWAE/VCE A. PU/r Patented Mar. 7, 1944 CARBON PACK FOR MANIFOLD TYPEWRITERS Laurence A. Petit, Chicago, Ill.

Application July 3, 1942, Serial No. 449,547

2 Claims.

This invention relates to carbon pack for manifolding typewriters and the like, and more particularly to an improved carbon pack of the type disclosed in my issued Patent 2,236,155, granted March 25, 1941.

Another object of this invention is to provide, in a carbon pack of the aforementioned character, a backing or supporting sheet of such construction that it lends itself to use with a supply of carbon paper which is replaceable thereon.

In accordance with the general features of this invention, there is provided a carbon pack for use in a manifold typewriter, billing machine, or the like adapted to employ continuous multiple form and which carbon pack comprises a supporting.

sheet formed for attachment at one end to the machine, a sheet of folded carbon paper thereon having one end attached to a portion of the supporting sheet remote from the attaching end thereof and a folded portion adjacent the attaching end leaving a free tail portion, and detachable means for securing the attached end of the carbon sheet to the supporting sheet.

Another feature of the invention relates to the provision of a snap-on connection between a supply of carbon paper and the supporting or backing sheet of the carbon pack.

Other objects and features of this invention will more fully appear from the following detailed description taken in connection with the accompanying drawings, which illustrate an embodi ment of my invention, and in which:

.Figure 1 is a perspective view, partly broken away, showing a portion of a standard type of manifold typewriter with a continuous fanfold form therein and illustrating the application of my improved form of carbon pack applied there.- to;

Figure 2 is a plan view of my novel form of carbon pack, partly broken away, and showing the carbon pack applied to a supporting arm of the typewriting machine;

- Figure 3 is a cross-sectional view taken on a line III-III of Figure 2 looking in a direction indicated by the arrows;

Figure 4 is a rear view of the carbon. pack illustrated in Figure 2; and

Figure 5 is an enlarged detail sectional view. taken on a line V-V of Figure 2 looking in a direction indicated by the arrows and showing how all of the carbon sheets are secured together at one end of the carbon pack.

As shown on the drawings:

In' order to facilitate the description of the present invention, I'have used the same reference numerals in Figure 1 as were used in describing the typewriting machine of my previous Letters Patent. The parts or elements designated by these numerals are briefly described hereinbelow.

The reference character 10 designates generally the platen of the typewriter machine which is associated with a platen carriage l2. Associated with the platen In in the usual way is a fanfold form H, which may be of any suitable construction and is usually in the form of a continuous strip arranged in fanfold formation, as is well known in the art. This fanfold form extends lengthwise over the carrier frame l8 of the machine which extends backwards from the platen carriage l2 and is movable with it from side to side. The carrier frame l8 includes the usual shifter frame 21 movable toward and away from the platen carriage l2. Associated with the shifter frame are the usual standard carbon supporting arms 3i although it is, of course, understood that different forms of arms may be used without deviating from the spirit of my invention. Each arm 3| carries a clip 32 ordinarily used to hold the ends of a sheet of carbon paper; this clip is left in place when my form of carbon pack is used but performs no useful function. In addition, each arm 3| is provideo. with dowel pins 36 which fit in the holes 31 in the shifter frame bracket 38 in the usual man- Her and is also provided with a knob or handle 33 which facilitates the handling of the arm.

It will be noted that the shifter frame 21 carries a pair of the brackets 38 which are set and project up beside the work sheets or form l'l. These brackets are provided with a series of pairs of holes 31 at different levels, as is well known in the art, for cooperating with the carbon supporting arms 3[ as noted before. This construction is such that a number of carbon supporting arms may be supported so as to extend in between the layers of the work sheets I1 and to which arms carbon paper or sheets are secured so as to float between the folds of the work sheets.

Positioned at the extremities of the platen it are the usual platen frame members All and 50 which are cooperable with the usual latches 62 and 63. The platen l0, together with its frame members 49 and 50, are swingable up away from the usual feed rollers therebeneath and forward against the stop 59 upon release of the latches 62 and 63.

The carbon shifter 2'! is movable in the usual manner by means of a handle H fixed to it and extending forward to a convenient position. The

reference character designates the usual knife cooperable with the platen N.

The machine also includes the usual gauge 59, which is so set that after the work sheets have been pulled out to it and the platen H] has been swung back into its normal position, the bottoms of the forms which have been filled out will lie along the edge of the previously referred to knife 10.

Each of the transverse arms 3| is adapted to support a carbon pack 34 embodying the features of this invention but before proceeding to describe the manner in which the pack cooperates with the fanfold forms or work sheets I1, I shall briefly describe the construction of this improved carbon pack, which is shown in detail in Figures 2 to 5, inclusive.

The pack 34 includes a backing or supporting sheet having one end folded back upon itself forming a flap 18, which flap may be notched out if so desired, as shown in Figure 2. Near the upper end of the pack, as shown in Figure 2, the flap 16 is secured by means of wire stitching or staples T! to the main body of the pack. These staples are arranged in a common line spaced from the extremity of the pack so as to provide a pocket in the backing sheet in which the end of the supporting arm 3| of the typewriting machine is insertable, as shown in Figure 2.

The other end of the backing sheet 75 is cut out to lighten it and is thus formed into two leg portions 78 and 19. It is to the extremities of these leg portions that the supply of carbon paper 80 is detachably secured by means of snap buttons, which will be described in detail hereinafter.

The supply of carbon paper 80 may include one sheet or a plurality of sheets, depending upon what thickness of material can be accommodated between the plies of the form without interfering with the operation of the machine. It will be noted from Figure 3 that I have illustrated the carbon paper supply 80 as comprising three folded sheets of carbon paper superimposed upon each other.

Each sheet of carbon paper has a free end or tail portion designated at A in Figure 3 which is disposed under the main body portion of the sheet and is located in close proximity to the snap-fastening means at the end of the pack. The other end of the carbon paper sheet is secured together along with the corresponding ends of the other sheets of carbon paper in the pack in a common folded strip of paper Bl. This strip of paper 8| is folded into a U with the registering ends of the carbon paper sandwiched therein. The ends of the carbon paper are secured in the strip 8| by means of staples or wire stitchings 82. Thus, the paper strip 8|, together with the staples, provide a binding for securing like ends of all of the sheets of carbon paper together in a single pad with the free extremities of the folded portions of the paper positioned in close proximity thereto, as noted at A.

The snap-fastening means comprises the usual female member 83 and male member 84. One set of these fasteners is associated with each of the leg portions 18 and 19 of the supporting sheet. The female members 83 are each suitably held inside of the folded strip 8|, as shown in Figure 3. Each of the male members 84 is suitably anchored to corresponding leg portions 18 and 19 of the backing sheet and is so positioned as to register properly with a cooperating concealed female member inside of the binding strip 8|. Thus the pad of carbon paper 80, together with its binding strip 8|, may be readily attached to the leg portions 18 and 19 of the supporting sheet by means of the above described snap-fastening elements. Similarly, the carbon paper supply may be readily detached from the leg portions 18 and I9 when it is desired to replace the used carbon pad by a fresh supply or pad of carbon paper.

In Figure 3 I have illustrated by dotted lines a sheet of carbon paper in the process of being unfolded for use in the machine. At first, the sheet is pulled out from under the flap 16 and then its free tail portion BI is extended so that the carbon sheet, when in use, projects longitudinally from the snap-fastener end of the pack toward the platen of the machine. The flap 16 serves the purpose of keeping the carbon paper that is not in use flat on the carrying sheath and aids in preventing the looped or turned ends of the carbon paper from being pulled along with the work sheets.

In the use of the carbon packs of my invention, one pack is mounted upon each of the arms 3| of the machine shown in Figure 1 and a sheet of carbon paper is unfolded and extended from the fastener end of th pack toward the platen so that it may be threaded along with the work sheets through the platen carriage of the machine. In other words, the carbon packs 34 carried by the arm 3| lie between the successive layers of work sheets H with the folded and extended sheets of carbon paper 80 located between the work sheets. Extended carbon paper with the work sheets are threaded around the platen ||I of the typewriter to the location in which they are to be typed. Thus, Whatever is typed on the uppermost work sheet is reproduced on the other work sheet or sheets.

When the typewritten matter on a work form has been completed, the latches 52 and 63 that hold the platen frame members 49 and 50 are released, and the platen l0 together with its frame members 49 and 50 are swung up away from the feed rollers beneath it and forward against the stop 56. The ends of the work sheets I! are then grasped between the thumb and finger and pulled forward to the gauge 59, which has been swung forward with the platen frame, and the carbon shifter 21 is simultaneously moved by means of the handle fixed to it. This operation shifts the carbon paper back from between the forms which have just been filled out and places their ends between the next set of forms to be filled out. The platen frame is then swung back into its normal position, which causes the work sheets to b gripped between the platen I0 and the feed rollers beneath it. Thus, the work sheets I! ar held while the set of forms which has been filled out is torn off along the blade or knife 10.

As noted before, the gauge 59 is set so that after the work sheets have been pulled out to it and the platen ID has been swung back into its normal position, the :bottoms of the forms which have been filled out will lie along the edge of the knife 70. At the same time, the shifting frame 21 has been pushed back far enough so that the ends of the carbon sheets will lie a little below the knife 10 so that, after the filled-out forms are torn off, the remaining forms will project a short distance between the ends of the carbon sheets to enable them to be grasped without grasping the carbon sheets, thus facilitating the succeeding operation of moving the carbon sheets back with respect to the work sheets or Webs ll.

After the free extremities of the carbon sheets have been used for making out a number of sets of forms, they become worn out. When this occurs, the shifting frame 27 is not pushed back as the ends of the work sheets iii are pulled forward preparatory to being torn off, or else the shifting frame 27 is not pushed back as far as when the ends of the carbon sheets are not Worn out. The result of not pushing back the shifting frame 2? or not pushing it back as far as at other times is to allow the ends of the carbon sheets to project past the knife it together with the forms which are to be torn off so that, when the forms are torn off, end portions of the extended carbon sheets will also be torn off and may then be removed from the severed forms and disposed of.

The repeated tearing off of the end portions of the carbon sheets eventually reduces the length of that portion of each carbon sheet which has been extended from the carbon pack 3% to a point where the balance of the sheet must be replaced. In order to restore this free portion to its original length, the layers of work sheets I! are spread apart where they cross the shifter frame 21 and on the side from which the carbon pack support bar 3! extends. By so doing, the operator can unfold a fresh sheet of carbon paper 80 from the pack 3 1 and thread it through the machine along with the work sheets. This operation, however, is only necessary after the previously extended sheet has been used up.

When all of the carbon paper in the pack has been used or, in other words, when all of the carbon paper available for use in the pack has been used, a fresh supply of carbon paper may be introduced in the pack by merely detaching the binding strip and the remaining end portions of the carbon paper from the supporting sheet 75. This is made possible through the means of the snap fasteners previously described. Thus, my present invention does not necessitate a removal by the operator of the supporting sheet from the arm 3| in order to supply a new set of sheets of carbon paper. A new supply may be substituted for the removed binding strip 8| by merely snapping a new pad into cooperation with the snap fastener members 84-434 on the legs l8'i9 of the supporting sheet 15 of the pack 34.

This improvement constitutes an advantage in that it saves time on the part of the operator in having to remove the arm 3! in order to introduce in the machine a fresh supply of carbon paper when the previous supply has been used up. In addition, it enables a saving in material in that it is not necessary to throw away the :backing or supporting sheet each time the supply of carbon paper 80 has been used up. My construction permits of the use of the supporting sheet 15 over and over again. Particularly is this true if the supporting sheet is made of a good quality of material. In fact, the supporting sheet could be made of some heavier material than paper such, for example, as Celluloid. Good results are obtainable, however, by the use of a good heavy grade of paper.

It will, of course, be understood that various details of construction may be varied through a wide range without departing from the principles of this invention and it is, therefore, not the purpose to limit the patent granted hereon otherwise than necessitated by the scope of the appended claims.

I claim as follows:

1. A supporting member for a carbon pack for use in a manifolding typewriter or the like comprising a sheet folded substantially midway of its longer dimension, said sheet having a pocket formed adjacent the folded end thereof and having provided adjacent one of the free ends of the sheet means for detachably mounting the carbon pack and supporting the same between the free ends of the sheet.

2. A supporting member for folded carbon paper for use in a manifolding typewriter or the like comprising a sheet folded transversely of its length into two legs with a pocket therebetween at the folded end, said folded sheet having one of its two legs provided with means for detachably mounting and attaching the carbon paper thereto between the planes of said legs.

LAURENCE A. PETIT.