US2920835A - Securing tabs for printing paper rolls - Google Patents

Description

12, 1960 w. GIBSON SECURING TABS FOR PRINTING PAPER ROLLS Filed Sept. 7, 1955 INVENTOR. W/L L /A M 6/55 ON 2,920,835 Patented-kn- 1 sncunmo TABS FOR PRINTING PAPER ROLLS William Gibson, London, England, assignor to The Daily Mirror Newspapers Limited, London, England Application September 7, 1955, Serial No. 532,995

Claims priority, application Great Britain September 13, 1954 3 Claims. (Cl. 242-58.5)

This invention relates to securing tabs for printing paper rolls.

Printing paper rolls used, for example, for printing newspapers generally have the loose edge secured by means of an adhesive tab inserted under the loose edge, with a portion of the tab protruding.

When the rollers are used in printing processes in which the end of one roll is secured to the beginning of another, to ensure continuous running without loss of speed, a tab is required which will be strong enough to prevent the paper unrolling before it is joined up and :yet which will break to free the loose edge of the replacementroll' when it is joined by means of the free protruding portion to the tail end of the roll which has been used up.

One form of tab for doing this is described in US. Patent No. 2,039,696 in which the break is achieved by means of multiple cuts across the material of the tab.

While this form of tab is, in general, satisfactory when printing rolls are driven from a central spindle, it is not a satisfactory when the rolls are driven up to speed by means of belts passing around the circumference of the roll, for high speed work, since premature breaking or tearing then takes place.

The invention consists of a securing tab for printing paper rolls comprising two paper parts gummed together face-to-face over a restricted area whilst leaving the opposed faces free to be pulled apart from a respective edge of each part, one at least of the parts being coated overall with adhesive on its outer face.

In use, the tab is inserted between the free end of a printing paper roll and the underlying paper, and adhesively secured thereto by means of adhesive on the outer face of the respective paper parts, adhesive being applied for this purpose where both parts are not already coated on their outer faces. The tab is positioned so that the aforementioned edge of the outermost paper part protrudes sufiiciently to provide an extension of the free edge, and this extension serves to connect the free edge adhesively to the tail end of an already printed roll. Adhesive, or additional adhesive, may be applied to this extension where desired immediately before the tab is to be torn open.

The invention also consists in a securing tab for printing paper rolls, comprising a first paper part gummed faceto-face along one edge portion to a second paper part, the two opposed faces also being spotgummed together at a position spaced towards the opposite edge portion of the first paper part, leaving the parts free to be pulled away from one another beyond the gum spot. Preferably, the outer face of each paper part is coated with adhesive.

In one convenient arrangement, the first paper part is in the form of a strip gummed over one face and also across an end edge portion of the other face, and is cut to provide an ear spaced away from thestrip sides and ends which is turned back, this part being gummed to the second part over said end edge portion and by means of the gum on the turned-back ear. The second paper part may have its outer face coated with gum, or with a permanently tacky adhesive protected by a removable foil.

The second paper part of the tab is preferably of 'a less strong paper than the strip.

In an embodiment the first paper part comprises a strip of strong paper gummed at one side. Over this on the ungummed side is symmetrically stuck a trape zoidal piece of less strong paper which extends beyond the strip at its base, which is made wider than the strip and terminates short of the other end of the strip in a side of the same length as the width of the strip, the two paper parts being well stuck together at the area adjacent the base over the whole width of the strip, whilst at the area adjacent the short side of the trapezoidal piece of paper the two parts are not stuck together, while in an intermediate area they are less securely stuck together e.g. by a single blob of gum in the middle of the strip.

The outer surface of the trapezoidal piece can also be gummed but additionally it will have fresh glue applied thereto when the roll to which it is attached is taken into use. Alternatively it may be coated with a permanently tacky adhesive protected by a detachable foil.

In use for the purpose described, it will tear away leaving part of its fibers on the strip of stronger paper.

Preferably the edge of the first paper part, where it is gummed to the second paper part, is spaced inwards from the adjacent edge of the latter.

The invention further consists in a printing paper roll, the free end of which is stuck down by means of an inserted tab formed of two paper parts lying face-to face secured adhesively to the underside of the free edge and to the underlying printing paper respectively, and gummed together adjacent the inserted end of the tab whilst being free to be pulled apart by means of a protruding portion of the outermost paper part forming an extension of the free end, the extension being spotgummed to the underlying paper part.

The invention is further described with reference to the accompanying drawings, of which:

Figure 1 is a view from the underside of one embodiment;

Figure 2 is a similar view of a second embodiment;

Figure 3 is a top view of the embodiment of Figure 2;

Figure 4 is a top view of a printing paper roll secured by means of the embodiment shown in Figure 2; and

Figure 5 is a sectional view on the line 5-'5 of Figure 4.

The tab shown in Figure 1 comprises a paper strip 1 gummed at 2 and 3 to an underlying paper piece 4, strip 1 and piece 4 each being gummed overall on their outer faces.

The tab shown in Figure 2 comprises a paper strip 5 gummed over its outer face and gummed at 3 (as in Figure 1) to an underlying paper piece 4.

Intermediate its ends and spaced from its sides, strip 5 is formed with a turned-back ear 6 stuck by the gum thereon to piece 4.

In use, either tab (that of Figure 2 being illustrated for convenience) is gummed by means of strip 5 (or 1) to a roll 7 of printing paper such as newsprint with piece 4 gummed or otherwise stuck to the underside of the free end 8 of the printing paper leaving a portion 9 of piece 4 protruding as an extension of end 8. Where the outer face of piece 4 is not coated with permanently tacky adhesive, portion 9 will generally be coated with fresh adhesive immediately before use.

The expression gum" is used broadly to signify a gummed paper or-its equivalent. In Figure 3, a foil split at has been shown, overlying a coating of permanently tacky adhesive, By means of the split, the foil 'can be removed in two stages, first exposing the adhesive to be pressed againstthe underside of the leading edge of the printing paper roll, and then (after the tab has been secured in position) exposing the adhesive on the portion 9.

Generally, the two paper parts will not be stuck together until the tab is to be used. Since the parts will then be positioned manually, the adhesive-free face of the second paper part may have a guide (indicated at 11 in Figure 2) printed on it to show the position to be assumed by the first paper part.

The expression permanently tacky adhesive signifies an adhesive which does not have to be moistened or othjerwise activated immediately after the removal of a pro st n fo I claim:

1. A securing tab for printing paper rolls, comprising a strip of strong paper gummedat one side, over which on the ungummed side is symmetrically stuck a trapezoidal piece of less strong paper which extends beyond the strip at its base, which is made wider than the strip and terminates short of the other end of the strip in a side of the same length as the width of the strip, the two paper parts being well stuck together at the area adjacent the base over the Whole Width of the strip, whilst at the area adjacent the short side of the trapezoidal piece of paper the two parts are not stuck togethen while in an intermediate area they are less securely stuck together.

2. A paper part for a printing paper roll securing tab, comprising a paper strip coated overall with gum on one side and on the other side, with gum over an end portion, the strip being cut at a position between its ends spaced from the sides to define an ear adapted to be turned back towards said end portion.

3. A securing tab for printing paper rolls comprising a first paper part and a second paper part, the first part being gummed face-to-face along one edge portion to the second part, the two opposed faces being spotgummed together at a position spaced towards the opposite edge portion of the first part by means of gum on a turned-back ear of. the first part which is in the form of a strip gummed over its outer face.

References Cited in the file of this patent UNITED STATES PATENTS 2,039,696 Wood May 5, 1936 2,094,454 Keville Sept. 28, 1937 2,096,389 Bode Oct. 19, 1937 2,149,832 Bernard Mar. 7, 1939 2,212,937 Horton Aug. 27, 1940 2,292,272 Hirshfield Aug. 4, 1942 2,329,527 Golub Sept. 14, 1943 2,377,971 Roesen June 12, 1945 2 r M... v1...

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