US2553476A - Carbon paper pack - Google Patents

Description

May 15, 1951 B. R. SALISBURY CARBON PAPER PACK Filed June 17, 1948 BRUCE R. 5A1. 1:5 URY INVEN TOR.

Patented May 15, 1951 UNITED STATES PATENT OFFICE CARBON PAPER PACK Bruce R. Salisbury, Portland, Oreg.

Application June 17, 1948, Serial No. 33,453

3 Claims. 1

This invention relates to improvements in carbon paper packs of the type used in connection with continuous billing forms of either fanfold or open-web design wherein the carbon packs are inserted between the sheets of the continuous form.

It is one of the principal objects of this invention to provide a carbon paper pack with two cardboard fibre leaders (main and auxiliary) instead of the customary single leader. This eliminates the former practice of attaching the leader of the carbon pack itself to a blade of the blade-holder or to any part of the forms carrier which feeds the continuous forms into the billing machine. The main leader of my invention is attached to the blade of the forms carrier; the auxiliary leader, to which the carbon pack is secured, may be quickly and conveniently attached and locked to the main leader and detached therefrom without disturbing the engagement of the main leader with the blade of the blade-holder.

A further object of the two leaders is to provide a means of adjusting the alignment of the carbon feed laterally Within the continuous form. This adjustment within limits of one-fourth inch to either side takes place without necessitating the removal of the main leader from the blade of the blade-holder and is brought about by sliding the auxiliary leader either to the right or to the left, which ever is necessary to create the proper alignment, at the point where the auxiliary locks to the main leader.

A still further object is that the provision of greater leader length, through the use of two leaders instead of one, brings about better alignment of the carbon feed within the continuous form and prevents creepage of the carbon sheet from the side of the continuous form. The two leaders made of cardboard fibre terminate in a closer spaced relation to the platen of the billing machine than do the shorter types of single leader, thereby reducing the length of the flexible carbon sheet which feeds forward into the continuous form.

A still further object of this invention is to provide for the use of strip carbon, if desired.

Strip carbon is a carbon tissue, a portion of which is coated with carbon, the remainder left uncoated. Since the leader of a carbon pack cannot feed under the platen of billing machines, there has heretofore been a certain portion of any carbon sheet, attached to a leader, which has been unused, due to the fact that that portion of the carbon sheet lies under the platen of the billing machine when the leader is at the;

limit of its forward position. With the use of strip carbon, only the uncoated portion of the strip carbon tissue will be wasted, thus providing greater economy in the maximum use of the carbon sheet.

These and other objects will appear as my invention is more fully hereinafter described in the following specification, illustrated in the accompanying drawing, and finally pointed out in the appended claims.

In the drawing:

Figure 1 is a perspective view of a continuous billing machine showing my new and novel carbon paper pack operatively applied thereto.

Figure 2 is a perspective view of the main leader locked to the auxiliary leader which carries the carbon paper pack.

Figure 3 is an enlarged sectional side elevation taken approximately along the line 3-3 of Figure 2.

Figure 4 is a perspective view of a modified form of main leader locked to a modified form of auxiliary leader which carries the carbon pack.

Figure 5 is an enlarged sectional side elevation taken approximately along the line 5-5 of Figure l.

Figure 6 is an enlarged perspective view of the folded sheets of the carbon pack attached to the auxiliary leader.

Referring now more particularly to the drawmg:

In Figure 1, reference numeral 1 indicates generally a billing machine having a platen 2 and a rearwardly extending feed rack or forms carrier 3 on which the continuous billing forms 4 are fed to and around the platen. On the feed rack is a sliding tray 4A to which are attached vertical blade-holders 5 upon which are stacked the blades 8 by means of slots formed near their ends. The leaders of carbon packs are attached to these blades which must be inserted between the individual sheets of the continuous form to permit that continuous form to be pulled forward without obstruction while the blade-holder is held stationary. Heretofore when inserting carbon packs, it has been necessary to remove the blades from the blade-holder in order to attach the leader of the carbon packs thereto. This results in considerable waste of time on the part of the operator.

As previously stated, one of the objects of the present invention is to provide a main leader, indicated at l, which remains permanently attached to a blade by being folded there-around and locked thereto by means of any approved form of paper clip or spring metal clamp as indicated at 9. The opposite end of each main leader is formed with a plurality of aligned slots II] to receive tongues I l punched out of the au'xiliary leader l2 as shown. By means of these tongues and slots, the auxiliary leader which carries the carbon pack may be quickly and conveniently locked to the main leader by a relative longitudinal movement in respect thereto in inserting the tongues into the slots. Conversely,

to detach the auxiliary leader from the main leader, the tongues are withdrawn from the slots. The length of the slots is greater than the width of the tongue to permit of the adjusting of the auxiliary leader with respect to the main leader for adjusting the alignment of the carbon feed laterally within the continuous form, as aforesaid.

To prevent accidental removal or disengagement of the auxiliary leader, I provide a locking means in the form of a sheet is which may be made of transparent material if desired, and hinged to the main leader by means of a strip of adhesive material Hi to provide a convenient means of lifting the sheet is for access to the auxiliary leader and its carbon pack.

In the modified form of main and auxiliary leaders indicated at l5 and 16in Figures 4 and 5, the main leader is folded back on itself as at I! to form a transverse pocket I8 to receive the folded under end E8 of the auxiliary leader 1%. One end of the pocket 18 is stapled as at NBA and its opposite end open for convenience in presenting both leaders for engagement with each other by an inwardly sliding motion-from one side; The folded under end 19 of the auxiliary leader I6 is stapled as shown at [9A. This form of invention is particularly adapted for use in the fanfold type of billing forms which are attached along one of their edgesfor example, the edge corresponding with the edge of the leader at the side wherethe pocket I8 is formed by the staples I8A.* By this engagement, the auxiliary leader of the carbon pack attached thereto may be conveniently slid outwardly from between the fanfold billing forms without the necessity of separating the continuous forms along their united edges. To prevent accidental detachment of the two leaders I attach the sheet of transparent material I3 to the main leader as in the form of the invention shown in Figures 2 and 3.

In Figure 6 is shown a plurality of the folded carbon sheets 28 which comprise the carbon pack. These carbonized sheets are attached by staples 20A to the folded end 21 of the auxiliary leader I2 or IS. The folded carbonized sheets are coated for a portion of their length as indicated at 22 and uncoated for the remainder of the sheet as shown at 23.

While I have shown a particular form of embodiment of my invention, I am aware that many minor changes therein will readily suggest themselves to others skilled in the art, without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to protect by Letters Patent is: V

1. A carbon paper pack including a detachable leader for use with a manifold typing machine having a platen roller, type bars, feed rollers, a shiftable pack carrier and a forms carrier for directing continuous billing forms into said platen and feed rollers, said pack comprising an auxiliary leader and a plurality of stacked carbon sheets secured along one of their edges to one edge of said auxiliary leader, a main leader having means formed at one of its ends for attachment to said pack carrier and means formed at its opposite end for removable engagement with said auxiliary leader whereby said pack may be removed from between said billing forms without disturbing the attachment of said main leader to said pack carrier, and means carried by the main leader for locking the auxiliary leader thereto against unintentional removal.

2. A carbon paper pack includin a detachable leader for use with a manifold typing machine having a platen roller, type bars, feed rollers, a shiftable pack carrier and a forms carrier for directing continuous billing forms into said platen and feed rollers, said packcomprising a main leader and an auxiliary leader, a plurality of folded and stacked carbon sheets secured along one of their edges to one edge of said auxiliary leader, and means formed in the opposite end of the auxiliary leader for locking engagement with means formed in one end of said main leader, the opposite end of said main leader being formed and provided with means'for attachment to said pack carrier, said first mentioned means consisting OI slots formed in the main leader to receive tongues formed in the auxiliary leader, said slotsbeing of greater length than the width of said tongues to permit relative lateral movement of both leaders for adjusting the alignment of the carbon sheets laterally within said continuous forms.

3. A carbon paper pack including a detachable leader for use with a manifold typing machine having a platen roller, type bars, feed rollers, a shiftable pack carrier and a forms carrier for directing continuous billing forms into said platen and feed rollers, said pack comprising an auxiliary leader folded back on itself at one of its ends, a plurality of folded and stacked carbon sheets secured along one of their edges to one edge of said auxiliary leader, each of said sheets being carbon-coated for a portion of its length and uncoated for the remainder of its length, a main leader folded back on itself at one of its ends for removable attachment to the said folded portion of the auxiliary leader, and means carried by the main leader and overlying the auxiliary leader and the carbon sheets carried thereby to prevent unintentional disengagement of the auxiliary leader from the main leader.

BRUCE. R. SALISBURY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 2,441,622 Doyle May 18, 1948

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