US1155619A - Web-printing machine. - Google Patents

Description

Patented- Oct. 5, 1915. 2 SHEETS-SHEETI wwmmsgcs, 0. 17%.

0. ROESEN.

WEB PRINTING MACHINE. APPLICATION FILED NOV. 20. I9I4.

Patented Oct. 5, 1915.

2 SHEETS-SHEET 2.

VW NESSES.

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OSCAR ROESEN, OF NEW YORK, N. Y., ASSIGNOR TO B. HOE AND CO., OF NEW YORK,

N. Y., A COBPORATIONOF NEW YORK. I

WEB-PRINTING MACHINE.

Specification of Letters Patent.

Patented Oct. 5, 1915.

Application filed November 20, 1914. Serial No. 873,079.

This invention relates to certain improvements in web printing machines.

In web printing machines, it is usual'to print and perfect one impression on each side of two webs, the two perfected webs being then, if desired, further manipulated in different ways to produce various products. It is also frequently desirable in web printing to print and perfect one web having two impressions on each side, this being particularly desirable in color printing. To obtain the best results when one web is to be given two impressions on one side and perfected, it is desirable, to efiect proper registry and for other reasons, that the two impressions be made as close together as possible. usual arrangement adopted for this is'to employ two sets of printing mechanisms, one

for printing each side of the web, so as to perfect the latter, each printing mechanism employing-two plate cylinders and an. impression cylinder, the impression cylinder being located between the plate cylinders, so

- were utilized for printing and perfecting one that a very short interval shall elapse b.e-

tween the two impressions on the same side of the web. With a machine constructed to effect this, however, it is not possible to print one impression on each side of two webs. To make it possible to print and perfect two webs with one impression on each side, and

one perfected web with two impressions on each side, a machine has been provided-employing four separate printing couples, each including a form member and an impression member. When one impression is to be made on one side of two webs, two of these couples web, and the other two for printing and perfecting the other web. When, however, in this machine, one web was to be printed with two impressions on one side and perfected,

' the web had to be led through all four of the couples and since necessarily thes'e couples were spaced apart, aconsiderable interval elapsed between the first and second im- The pressions on the same'side of the web, with consequent tendency to non-register. This arrangement, furthermore, had other disadvantages.

It is the object of the present invention to produce a web printing machine in which the printing elements are so arranged that two webs can be printed and perfected with one impression on one side, and at the same time one web can be printed and perfected with two impressions on the same side, with a very small interval between the two impressions, so that accurate registry is se cured.

A further object of the invention is to produce a printing mechanism for effecting these results which shall be simple and compact.

ticular machine which has been selected to.

illustrate the invention is a rotary machine, in which the form and 'im ression members are cylinders, although, if desired, the invention may be employed in machines in which all the printing elements may not be cyliners. M

Referring first to the construction illustrated in Fig. 2, there are indicated two sets of printing mechanisms A, B, which are or may be duplicates of each other. Each of these sets in the particular construction illustrated includes form cylinders 1 9 these cylinders being preferably arranged substantially vertically of each other. The ink is supplied to these form cylinders from ink reservoirs 3, 4 through the usual train of ink distributing rolls 5, 6. Cooperating with the. form-cylinders, is an impression cylinder 7, the form cylinders being arranged so as to have quick successive printingrelation with this cylinder 7, being mounted to effect this in the particular com- A mechanism for carrying out the inveni 't1on is diagrammatically illustrated in the struction illustrated on the same side of the axis of cylinder 7. Two form cylinders and the impression cylinder are furthermore arranged so that their printing relations may be changed, so that in one position the form cylinders are both in printing relation with the impression cylinder, and, in

another position, one, only of the form cylinders is in printing relation with the impression cylinder. This change of the printing relation of these cylinders maybe effected in various ways, but inthe particular construction illustrated the impression cylinder 7 and form cylinder 2 are-arranged so that they may be thrown into and out ofprinting relation with each other. In thebest constructions, and as illustrated, the impression cylinder 7 will be mounted so that it can bemoved or tripped out of printing relation with the form cylinder 2, continumg, however, in printing relation with form cylinder 1. 'Any suitable mechanism may be employed for thus moving or ,tripping the cylinder and, as many such mechanisms are 'known'in theart, which may be employed,

none has been illustrated because unnecessary for an understanding of the invention.

I The second set of printing mechanism which may be used is indicated by the letter Band includes two -'form members illustrated as cylinders 9, 10 inked from suitable ink res- I ervoirs 11, 12, through the usual chain of distributing rolls 13, 1-1. Cooperating with form'cylinders 9, 10, which, as shown, are arranged preferably substantially vertically of each other, is an impression cylinder 15. Like the cylinders in set A, the form cylinders 9, 10 are arranged so as to have quick 'successive printing relation with impression cylinder 15, being mounted for this purpose preferably as' shown on the same side of the axis of the impression cylinder.

These form cylindersvand impression cylinders, furthermore, are arranged so that their printing relation may be changed, the cylinders being mounted so that the impression cylinder may, in one position, be in printmg relation with both form cylinders, and,

in another position, be in printing relation" with but one of the form cylinders. While this change in the printing relation of the cylinders may be effected in various ways, preferably impression cylinder 15 will .be

F a mounted so-that it can be moved or tripped ,out of printing relation with one of the "form cylinders, it being tripped out of vprinting relation in the particular construction illustrated with form cylinder 9 through suitable tripping mechanism, not illustrated, the position of the cylinder,

, when so moved, being indicated in the drawings by dotted lines. In accordance with the invention, and for purposes which will hereinafter appear, two other impression cylinders 16, 17 are provided which may,"

through suitable tripping mechanism, not

. shown, be 'brought into and out of printing relation with the form cylinders 2, 9.

In the construction illustrated in Fig. 2, the web W is to be printed with two impressions on one side', as, for instance, in two colors and perfected. When this is to be done, the cylinders 16, 17 occupy the position shown in full lines in Fig. 2, that is, they have been tripped out of printing relation with the form cylinders 2, 9, the cyl- I inders' 7, 15 having been tripped into the position shown inffull lines in the figure, so that the cylinder 7, is in printing relation with the form cylinders 1, 2, and the cylinder 15 is in printing relation with the form cylinders 9, 10. The web W is led from the web-roll through the usual drawoff rolls 18 around guide-rolls 19 between the form cylinder 1 and the impression cylinder 7, where it is given its first impres- '.sion. It then continues between impression cylinder. '7 and form cylinder 2, where it 1s tween cylinders 15, 9, where the second impression is given, the arrangement of these cylindersbeing the same as in mechanism A, so that a very short interval elapses between impression. If desired, an offset web 21 may be provided passing over a guide-roll 22 and meeting the printed web at guideroll 20, the ofi'set member being rewound on a rewinding-roll 22. After the web has been given its second or perfected impression, it may be led over guide-rolls 23, 23,

to a cutting and folding mechanism, or may be otherwisemanipula-ted as desired.

With the construction thus far described, it will be seen that the web is printed and perfected with two impressions on one side, these impressions being so produced as to allow of accurate registry.

When it is desired to print and perfect two webs with one impression on each side,

the machine illustrated in Fig. 2 isradjusted .so that the parts are in the position shown in Fig. 1. In this arrangement the impression cylinders 16, 17, are tripped so as to be in printing relation with the cylinders 2, 9, and the cylinders 7, 15, are tripped out of printing relation with the cylinders 2, 9, but continue in printing relation with cylinders 1, 10. With this arrangement of parts and simple adjustment of the impression cylinders, two webs can be printed and perfected with one impression on each side, as follows: Web W is led from a suitable webroll between the printing and impression cylinders 2, 16, where it is printed on one side, through a printing couple 9, 17, where it is perfected, and over guide-rolls 23 out of the machine. Web W is led from a suitable web-roll through impression cylinders 1, 7, and to and through cylinders 15, 10, where it is perfected, and out of the machine,

.and may be led with web W, if desired, to

any mechanism for further manipulation.

The cylinders of each set may be driven in any suitable manner. In the particular construction illustrated, the cylinders of mechanism A, and the cylinders of mechanism B are driven from cylinders 1 and 10. When, as shown, cylinders 1 and 10 are driving cylinders, reversing mechanisms, as pinions 24, shown in dotted lines are provided, which reverses the direction of rotation of cylinders 2 and 9. These pinions 24 are mounted so that they may be thrown out of gear with impression cylinder 7 through any suitable construction, not shown, they being so thrown out when the machine is to be used for printing two impressions on the same side of one web, as illustrated in Fig. 2. Certain changes and variations may be made in the specific construction shown and described, without departing from the in-.

vention, and the invention furthermore may be employed in machines in which all the printing elements are not cylinders and the invention is not to be restricted to the exact arrangement shown and described.

What is claimed is:

1. In a printing machine, the combination of a set of printing couples including form members and impression members arranged so that two form members may have quick successive printing relation with one impression member, a second set of printing couples including form members and impression members arranged so that two form members may have quick successive printing relation with oneimpression member, and means for changing the printing relation of the members of each set so that in one position a web may be given multiple impressions on one side in one set and perfected with multiple impressions in the other set, and in another position two webs may each be printed with one impression in one set and perfected in the other.

2. In a printing machine, the combination of a set of rotary printing couples including form cylinders and impression cylinders arranged so that two form cylinders may have quick successive printing relation with one impression cylinder, a second set of printing couples including form cylinders and impression cylinders arranged so that two form cylinders may have quick successive printing relation with one impression cylinder, and means for changing the printing relation of the cylinders of each set so that in one position a web may be given multiple impressions on one side in one set and perfected with multiple impressions in the other set, and in another position two webs may each be printed with one impression in one set and perfected in the other.

3. In a. printing machine, the combination of a set 'of rotary printing couples including two form cylinders, an impression cylinder, the two form cylinders being located on the same side of the axis of the impression cylinder so as to have quick successive printing relation therewith, a second couples including two form cylinders, an impression cylinder, the two form cylinders of the second set being located on the same side of the axis of the impression cylinder so as tohave quick successive printing relation therewith, and a second impression cylinder in the second set cooperating with one of the form cylinders, both impression cylinders of the second set being movable relatively to the form cylinders.

4. In a printing machine, the combination of a set of rotary printing couples including two form cylinders, an impression cylinder, the two form cylinders being located on the same side of the axis of the impression cylinder so as to have quick successive printing relation therewith, a second impression cylinder cooperating with one of theform cylinders, both the impression cylinders being movable relatively to the form cylinders, a second set of rotary printing couples including two form cylinders, an impression cylinder, the two form cylinders of the second set being located on the same side of the axis of the impression cylinder so as to have quick successive printing relation therewith, a second impression cylinder in the second set cooperating with one of the form cylinders, both impression cylinders of I witnesses.

' OSCAR ROESEN. Witnesses RICHARD KELLY,

HAROLD MoR'roN TILLINGHAST.

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