US3512770A - Web lead - Google Patents

Description

y 19, 1970 H. SCHUFFENHAUER 3,512,770

WEB LEAD- Filed Dec. 8. 19s? 3,512,770 WEB LEAD Herbert Schuifenhauer, Haworth, N..l., assignor, by mesne assignments, to James Talcott Inc., New York, N.Y., a corporation of New York Filed Dec. 8, 1967, Ser. No. 689,146 Int. Cl. B65h 39/16 US. Cl. 270-52 4 Claims ABSTRACT OF THE DISCLOSURE A web lead system in a rotary printing machine which has folders with two former folders and angle bar sections for each printing unit of the machine. A system of web rollers for leading half-width webs to one or the other former folder over the angle bar sections without changing the position of any one of the angle bars.

BACKGROUND OF THE INVENTION This invention rel-ates to paper web leading systems in rotary printing machines and more particularly to the means for barring one half paper web on top of the other after slitting the full-width web in half, before advancing the two half-width webs together into the folder of the printing machine.

It is a known and well-established practice to provide for so-called angle bar sections for every printing unit of a newspaper printing machine. The full-width paper web is slit into two half-width webs, sometimes also called ribbons, after being printed on both sides in the printing unit. One of the half-width webs is guided in a straight direction to the former folder of the folding apparatus of the printing machine whereas the other half-width web is transferred, or barred, by way of a pair of angle bars, arranged parallel to one another at the angle of 45 degrees over to the side where the straight running part of the web is, so that the two half-width paper webs will descend over the former folder which has the width of a half web, for being folded longitudinally together. A typical illustration of an arrangement of angle bars may be seen in the McMullen Pat. No. 2,866,636.

When, however, two former folders are arranged sideby-side in a newspaper printing machine, which is mostly the case, particularly when two lower folder apparatuses are installed below the two former folders, it becomes necessary to lead the half-width webs either to the former folder on the operating side of the printing machine or to the one on the drive side of it. In such case the position of the angle bars has to be reversed which is a time-consuming job. If the lower folder which is actually in operation during a newspaper production run, has to be taken out of action for one reason or another, and the adjacent other folder has to be used, a time loss by reversing the angle bars would be detrimental to the scheduled deadline of the newspaper production. This problem of the need for reversing the position of the angle bars for changing the web lead is solved by this invention.

SUMMARY The invention consist in such novel features, construction arrangements, combinations of parts and improvements as may be shown with the apparatus herein dis closed by way of example only and as illustrative of a preferred embodiment. This invention consists in an addition of new structural elements, such as web guide rollers, in the angle bar section by which elements the location of the pair of angle bars remains unchanged for the change of the web lead.

Objects and advantages of the invention will be set '3 States Patent 3,512,770 Patented May 19, 1970 forth in part hereafter and in part will be obivous herefrom or may be learned by practicing the invention, the same being realized and attained by means of the instrumentalities and combinations pointed out in the appended claims.

It is the object of this invention to provide a new system of web leads over angle bars in newspaper printing units.

It is furthermore an object of the invention to provide new means for facilitating guiding of half-width paper webs either to the operating side or to the drive side of the printing machine without altering the positioning of the pair of parallel angle bars or of any other machine member.

Another object of the invention is to provide for means for improving the operation of a newspaper printing machine.

Various further and more specific purposes, features and advantages will clearly appear from the detailed description given below taken in connection with the accompanying drawing which forms part of the specification and illustrates merely by way of example one embodiment of the device of the invention. In the following description and in the claims, parts will be identified by specific names for convenience, but such names are intended to be generic in their application to similar parts as the art will permit.

BRIEF DESCRIPTION OF THE DRAWINGS Like reference characters denote like parts in the several figures of the drawings, in which- FIG. 1 shows schematically one web lead;

FIG. 2 shows schematically the other web lead;

FIG. 3 shows the plan view of the web lead as shown in FIG. 1;

FIG. 4 shows the plan view of the Web lead as shown in FIG. 2.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now in more detail to the drawings illustrating a preferred embodiment by which the invention may be realized, there is shown the angle bar section of a newspaper printing unit not shown in the drawing. A pair of parallel angle bars 11, 12 are fastened to crossbraces 13, 14 which are mounted between the front or-operating side frame 15 and the rear-or drive side frame 16 of the newspaper printing unit. The full-width paper web 17, coming from the printing unit, is pulled by the slitter roller 18 which is driven by the main drive of the printing machine. A slitter 19 which is also positively driven, is located in the center of slitter roller 18. Web 17 is slit into two half- width webs 20 and 21 by slitter 19 on slitter roller 18. As seen in FIGS. 1 and 3 the two half-width Webs 20 and21 both are now guided under guide roller 22 toward the angle bars 11, 12. Half-width web 20 pro ceeds in a straight forward path over the guide rollers 23, 24, around the adjustable compensator roller 26 and over guide roller 25, whereas half-width web 21 is barred" over angle bars 11, 12 for meeting straight running halfwidth web 20 and for being guided over the rollers 27, 28, around the adjustable compensator roller 30 and over roller 29. Both half- width webs 20, 21 are then running one on top of the other over the same former folder 31 into the corresponding lower folder of the printing machine.

If it becomes necessary for any reason to change the web lead, that is to let half-width web 21 go straight forward and to bar half-width web 20 over to front side 15 of the printing machine in order to use the former folder 32 of the folding apparatus of the machine, two additional guide rollers 33, 34 mounted below angle bar sections 11, 12 between side frames 15, 16 are provided.

Half-width web 20 now can be guided under roller 33 and around roller 27 and then over angle bars 11, 12 in the reverse running direction than before in order to meet half-width web 21. Web 20 is then led back around roller 22 to guide it into the forward direction and then it is led over rollers 23, 24, around compensation roller 26 and over roller 25 onto the former folder 32. Web 21 will have to be guided below half-width web 20 by guide roller 34, (see FIGS. 2 and 4) in order to obtain the same relative position as before so that it is now led under roller 34, over roller 28, around compensation roller 30 and over roller 29 onto the former folder 32 with web 20. The position of angle bars 11, 12 is not changed, and no guide rollers have to be re-located.

The operation is illustrated in FIGS. 3 and 4 by the single arrows indicating half-width web 20 and by the double arrows indicating half-width web 21 and is selfexplanatory from the figures.

While the invention has been described and illustrated with respect to a certain preferred example which gives satisfactory results, it will be understood by those skilled in the art after understanding the principle of the invention, that various other changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended therefor in the appended claims to cover all such changes and modifications.

I claim:

1. In the angle bar section of a printing unit of a rotary printing machine having a full-width paper web and a slitter device for slitting said full-width web into two half-width webs, at least one folding apparatus equipped with two former folders in side-by-side relationship, said angle bar section arranged for guiding either one of said half-width paper webs over to the other half-width web by a pair of parallel angle bars permanently assembled in said printing machine, the combination comprising a plurality of paper web guiding rollers mounted in said printing machine for cooperating with said angle bars for guiding one of said half-width paper webs in a straight path toward one of said former folders and for guiding the other half-width paper web around said angle bars so that both said half-width webs advance in superposed relation toward the same former folder, and at least two additional guiding rollers mounted on said printing machine having their axes parallel to the axes of said web guiding rollers and located substantially in front of and below said angle bars for guiding said other half-width paper web in a straight path toward the other former folder and for guiding said one of said half-width webs around said angle bars to advance in superposed relation with said other halfwidth web toward said other former folder.

2. The angle bar section of a printing unit of a rotary printing machine according to claim 1 wherein one of said additional guiding rollers is located above the other of said additional guiding rollers, whereby both of said half-width webs may be guided above both said additional guide rollers when said half width webs are to be guided to one of said former folders and so that one of said half-width webs may be guided by one of said additional rollers and the other half-width web may be guided by the other additional roller when said half-width webs are to be guided to the other of said former folders.

3. In the angle bar section of a printing unit of a rotary printing machine having a full-width paper web (17) fed thereto between a pair of side frames (15, 16) so as to be ultimately fed in half-width size to either of two former folders (31, 32) located in side-by-side relation and at the exit side of said angle bar section; the combination comprising a slitter device (18, 19) mounted between said side frames for pulling said full width web into said angle bar section and for slitting said full width web into first (20) and second (21) half-width webs; a first guide roller (22) mounted between said side frames for guiding both half-width webs in side-by-side relation into said angle bar section; a pair of angle bars (11, 12) mounted on crossbraces (13, 14) between said side frames at an angle of 45 thereto for guiding one of said halfwidth webs (21) to be led below the other half-width web (20) when said half-width webs are to be led together to one of said former folders (31); further guide rollers (23, 24, 25; 27, 28, 29) mounted between said side frames for guiding both said half-width webs to the said same former folder (31); second (33) and third (34) guide rollers mounted between said side frames having their longitudinal axes parallel to the other guide rollers and perpendicular to the plane of said side frames; said second and third guide rollers being located substantially between and below said first guide roller (22) and said angle bars; whereby said second half-width web (21) may be guided under said third guide roller (34) when said web (21) is to be led onto the other former folder (32), and whereby said first half-width web (20) may be guided under said second guide roller (33) so as to be led by said angle bars (11, 12) on top of said second half- Width web to be led together therewith over said further guide rollers (23-24-25 and 27-28-29 respectively) to said other former folder (32).

4. An improved angle bar section of a printing unit of a rotary printing machine having a full-width paper web fed thereto between two side frames of the printing unit, said section having slitter means mounted between said side frames and located at the entrance side of said angle bar section for slitting said full width web into equal halfwidth webs, a plurality of guide rollers for leading one of said half-width webs in a straight line toward the exit side of said angle bar section, a pair of turner bars mounted between said side frames and at an angle of 45 thereto for leading the other of said half-width webs underneah the straight travelling half-width web so that both half-width webs may be led in superposed relation over said guide rollers toward the exit side of said angle bar section, a pair. of former folders located at the exit side of said angle bar section so that both said half-width webs are led together over one of said former folders into a folder unit, wherein the improvement comprises first and second additional guide rollers mounted between said side frames being located substantially below and before said turner bars with respect to the direction of travel of said webs, said first additional guide roller being located substantially before and above said second additional guide roller, whereby one of said half-width webs may be led under said second additional guide roller and along a straight path toward the other former folder and the other one of said half-width webs may be led under said first additional guide roller and over said turner bars to thereby be led on top of the other half-width web as that both half-width webs may be led in superposed relation to the other former of said pair of former folders without having to change the angle of said turner bars.

References Cited UNITED STATES PATENTS 2,866,636 12/1958 McMullen 270-52 3,399,884 9/1968 Bahrani 270-52 FOREIGN PATENTS 949,169 9/ 1956 Germany.

LAWRENCE CHARLES, Primary Examiner

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