US974607A

US974607A - Rotary web-press.

Info

Publication number: US974607A
Application number: US45800808A
Authority: US
Inventors: Christian N Smith
Original assignee: CHARLES A ARMBRUSTER; JOHN A HABEN
Current assignee: CHARLES A ARMBRUSTER; JOHN A HABEN
Priority date: 1908-10-16
Filing date: 1908-10-16
Publication date: 1910-11-01
Anticipated expiration: 1927-11-01

Description

G. N. SMITH. v ROTARY WEB PRESS. APPLIOATION FILED 001'. 16,1900.

Patented Noi-1, 1910.

8 SHEETS-SEEET-l.

www... \\1\ 'lill C. N. SMITH. v ROTARY WEB PRESS. APPLIoATxoN Hmm ooT. 1e. 190s;

974,607. 'l l Patented N0v.1,191o.

. 3 SHEETS-SHEET 2. L27/@3.

fr? 4.77 Zgf :ig /45 ,35) /57 1,-, A

' C. N. SMITH. ROTARY WEB PRESS. APPLIUATION FILED-00T. 16, 1908.

Patented Nov. 1, 1910.

4s SHEETS-SHEET sl` /.ff I I f M f" 1H: NoRms Psrsss co., wAsHmvraN, n. c.

CHRISTIAN N. SMITH, OF ELGIN, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, OF TWO-THIRDS 'I'O CHARLES A. ARIVIBRUSTER AND JOHN A. HABEN.

ROTARY WEB-PRESS.

Specification of Letters Patent.

Patented Nov. 1, 1910.

To all /whom Lt may concern:

Be it known that I, CHRISTIAN N. SMITH, a citizen of the United States, residing at Elgin, in the county of Kane and State of Illinois, have invented certain new and useful Improvements in Rotary Web-Presses, of which the following is a specification.

My invention relates to a printing press for printing a series of different impressions, as in multi-color printing, on a continuously moving web of paper or card-board, and has for its object to provide a simple and compact multi-color print-ing press which will secure an accurate register of the different impressions and which can be easily adjusted so as to print upon paper or card-board of different thicknesses and textures.

In accordance with my invention, I construct a printing press having a single impression cylinder and, instead of the ordinary tympan or make-ready, employ a traveling belt of some relatively soft, elastic material. Around the impression cylinder I group the several printing cylinders. This arrangement makes my press much more simple, compact and easily operated than the multi-color presses now in use. The use of the endless belt, instead of the ordinary tympan or blanket, makes this arrangement possible, the belt having nojoint which, with the commonly used blanket, makes the impression cylinder useless at one place on its surface. This arrangement has the further advantage that the printing of different sizes of sheets may be done by simply changing the printing cylinders.

A traveling endless belt has been employed for many years in the printing of woven fabrics, such as calico. In this work exactness of register is not very important. So far as I am aware, there has never been constructed and successfully put in operation a multi-color printing press for printing upon paper and card-board which has employed a traveling tympan. Multi-color rotary presses as used ordinarily consist of a number of printing couples, one for each color, through which the paper is run successively. If a belt is used, without any means for holding -it upon the impression cylinder, the belt tends to travel laterally on the cylinder and so to work olf the end of the cylinder. I have found by experiment that, if the belt is used with impression and printing cylinders having the 'ordinary bearers, or

rings, on the ends of the cylinders, that the belt works in between the bearers, with the result that it is torn and frayed and runs unevenly. If the belt goes far enough in between the bearers, it may, of course, stop the press or destroy some of its mechanism.

Itis one of the objects of my present invention to provide means on the cylinders for holding the belt in proper position and so that a perfect register of the successive impressions is obtained.

The invention has for a further object to provide means by which the belt, which is of elastic material, may be stretched more or less so as to make it relatively thick or thin, according to the kind of paper or cardboard which is to be run through the press, and so as to give it the proper degree of hardness or softness for the particular kind of work being done.

The press can be used for a number of diierent kinds of printing. It is particularly useful in the manufacture of cartons, or the like, to be printed in more than one color. W'ork of this sort has ordinarily, and I believe always, been done upon flat bed presses, the printed sheets being then removed to separate machines for t-he cutting and creasing or scoring operations necessary to finish the blank. By providing my machine with rotary cutting and folding mechanisms which receive the printed web just as it comes from the printing cylinders, I have a machine which, by one continuous automatic operation on a single machine, turns out a complete carton blank, or the like, creased, cut and printed in two or more colors, work which has always required several different machines and several handlings of the paper. It is one of the principal objects of my invention to provide a machine for accomplishing this result.

The invention has for further objects such other new and improved constructions, devices and arrangements in printing presses as will be described in the specification and particularly set forth in the claims appended thereto.

The invention is illustrated in a preferred embodiment in the accompanying drawings, in which- Figure l is a diagrammatic, sectional elevation. Fig. 2 is a side view of the impression cylinder and one of the printing cylinders with the tympan belt in section.

Figs. 3, 4, 5 and G are detail views of the several cutting and creasing cylinders. Fig. 7 is a detail in elevation of a pair of creasing cylinders for creasing the web longitudinally. Fig. 8 is a sectional view illustrating the operation of a pair of creasing cylinders for creasing the web transversely. Fig. 9 is a section through the belt stretching device; and Fig. 10 is a diagram showing a web of paper as it is cut and creased in the making of carton blanks.

Like characters of reference indicate like parts in the several figures of the drawings.

Referring first to Fig. 1, A represents the impression cylinder and B, C and D three printing cylinders. These cylinders will be provided with any appropriate and well knownmeans for driving them and the printing cylinders will each have their inking devices, these parts forming, in themselves, no part of my present invention and not having been illustrated. E represents the traveling tympan, which consists preferably of an endless, rubber belt 11 reinforced by a backing 12 of canvas or the like.` The belt extends over an idler 13. F, F, G, G, H, H and I, I represent pairs of rotary cutting and creasing devices, which are arranged to receive the continuous web as it comes from the printing apparatus, the arrangement being preferably such that the web is carried along upon the belt and delivered to these cutting and creasing devices.

The construction of the cylinders by means of which the traveling tympan kept in place, is illustrated particularly in Fig. 2. The impression cylinder A is provided on its ends with the bearers 14, between which the belt E runs. The printing cylinder B, which is the one shown in this view, is also provided with bearers 14, so that they overlap and press upon the flat ,surface of the belt at each side. Cylinders C and D are preferably alsoprovided with bearers of this character. By this arrangement the belt E is held in proper position on the impression cylinder, thus insuring a perfect register of the successive impressions placed upon the web. j

The device for stretching the tympan is shown particularly in Figs. 1 and 9. It consists of a roller J having journals 16 mounted in boxes 17, which are slidable on the frame of the machine. Each box is provided with an adjusting screw 18. The roller J is located preferably approximately midway between the impression cylinder and the idler 13. A slight adjustmentof the roller will decrease the thickness of the belt and, at the same time, harden its surface. In this way the machine can be accommodated for printing upon thin paper or a relatively thick Vcard-board without any change in the position of the cylinders. This adjusting means is within easy reach of the person operating the press, so that the adjustment may be made while the machine is in operation, in order to get the right depth of impression. If the belt wears or becomes stretched on one sidegmore than the other, one of the screws 18 may be screwed up more than the other.

The cutting and creasing devices, as they are illustrated in Figs. 3 to 8 inclusive, can be best understood in their operation Lin connection with thel diagram (Fig. 10) showing a section of web cut and creased so as to form finished carton blanks. This particula'r form of blank has, of course, been chosen merely for purposes of illustration. By changing the dies on the cutters and creasers, a blank of a different form might be turned out. The creasing devices might be omitted, if desired.

In Fig. 10 a complete carton blank a and parts of a preceding blank b and a succeeding blank c are shown, the web traveling in the direction of the arrow. The blank a is outlined by the

lines

19, 20, 21, 22, 23, 24, 25 and 26. The pieces of the web e, f, g and h, z', j, 7c, and Z are cut out, as will be described. rIhe cuts 27, 28, 29, 30, 31, 32, 33 and 34 form together the locks of the cartons. The web is carried along from the printing cylinders on belt 12, until it reaches rollers F, F, F- being an ordinary, smooth roller of soft steel and F being the roller shown in F ig. 3. The latter is provided with the knives 35 and 36, the former, supposing the cylinder to be rotating in the direction of the arrow, making cut 30, the latter cut 29 and afterward, in the same way, cuts 28 and 27. Roller F is also provided with the

arcuate knives

37, 38 which make the

cuts

39, 40 and 41, 42. Similar knives 43, 44 make the cuts 45, 46, and 47, 48, and

knives

49, 50 make the

cuts

34, 33, 32, 31 in that order. The blank in this shape passes on to rollers G, G, the roller G being provided with two pairs of

ribs

51, 52 and 53, 54, and the roller Gr with corresponding grooves, the rollers interacting, as shown in Fig. 7, in which a part of roller G having a groove 55 is shown. the longitudinal creases 56, 57, 58 and 59. The web proceeds to rollers H, H, roller H being provided with the longitudinal creasing ribs G0, 61 and H 'with corresponding grooves, one of these being shown at 62 (Fig. 8). These creasers make the creases or

scores

63, 64. Rollers I, I make the

cuts

25, 23 and 21, 19, rollerI being provided with the long knife 65 and the

short knives

66, 67. The blanks are thus turned out 'of the machine in finished condition, printed in three different colors, cut and creased and ready to be folded, the parts L, g, f, and e dropping out,- leaving the lap m which can be glued to the side a when the box is folded on the creases, the pieces Z, lo, j, z' also falling These creasing ldevices make Y out. The slit ends 0, p, g, r, s, t, u and lv of the blank form the ends of the Carton and are folded over on the creases 63, 64: in the familiar manner. The cut end 29 hooks into the slit 33 to form the lock.

I claim:

1. In a printing press, the combination of an impression cylinder, a printing cylinder, a traveling tympan in the form of a belt, retaining means on the impression cylinder for engaging the edge of the belt, and means on the printing cylinder distinct from and on each side of the printing portion of said cylinder for engaging the flat surface thereof.

Q.. In a printing press, the combination of an impression cylinder, a printing cylinder, a traveling tympan in the form of a belt, and bearers `on the impression cylinder and the printing cylinder, the bearers on the printing cylinder being Wider than those on the impression cylinder, so as to overlap the belt.

3. In a printing press, the combination of an impression cylinder having its central art recessed, a tympan for the same in the orm of a belt, a plurality of printing cylinders arranged around the impression cylinder so as to be in contact With the belt, and rings on the several printing cylinders which overlap and bear upon the edges of the belt.

4. In a printing press, the combination of an impression cylinder, a printing cylinder, an endless tympan belt around the impression cylinder, and bearers on said cylinders, the bearers on the printing cylinder overlapping the belt.-

5. In a printing press, the combination of an impression cylinder, a printing cylinder', an endless tympan belt around the impression cylinder, and cooperating means on the impression cylinder' and the printing cylinder other than the impression and printing surfaces thereof for retaining the belt in proper position on the impression cylinder.

6. In a printing press for printing upon a continuously moving paper Web, the combination with an impression cylinder, of a plurality of printing cylinders arranged around one side of the impression cylinder, an endless traveling tympan belt on the impression cylinder, a roller Which carries said belt arranged on the opposite side of the impression cylinder from the printing cylinders and cutting and creasing devices, arranged in line with said impression cylinder and said roller so as to receive the paper Web as it leaves said tympan belt, and a tension roller on the under side of said belt between tlie impression cylinder and said first named roller, said tension roller being adjutable against the outer surface of said be t.

7 In a printing press for printing upon a continuously traveling4 vveb of paper, the combination with an impression cylinder, of a plurality of print-ing cylinders arranged around the impression cylinder, a traveling tympan belt of elastic material on the impression cylinder, co-acting means on the impression cylinder and the several printing cylinders for preventing lateral displacement of t-he belt on the impression cylinder, nld means for varying the thickness of said S. In a printing press for printing upon a continuously traveling Web of paper, the combination With an impression cylinder, of a plurality of printing cylinders arranged around the im ression cylinder, a traveling tympan belt of elastic material on the impression cylinder, co-acting means on the impression cylinder and the several printing cylinders for preventing lateral displacement of the belt on the impression cylinder, a roller Which carries said belt, a tension roller arranged against the outside of the belt between said first named roller and the impression cylinder, and means for adjusting said tension roller.

9. A machine for printing multi-color upon a continuously traveling Web, and for creasing and severing said web, com rising an impression cylinder, a plurality ofP printing cylinders arranged on one side of the impression cylinder, a traveling tympan belt of elastic material on said impression cylinder, a roller which carries said belt on the other side of the impression cylinder from the printing cylinders, a tension roller arranged against the under side of said belt, means for adjusting said tension roller, a plurality of cutting and creasing rollers arranged substantially in line with the impression cylinder and said belt carrying roller to receive the paper Web as it leaves said belt and cooperating means on the impression cylinder and the several printing cylinders which prevent the lateral displacement of the belt on the impression cylinder.

CHRISTIAN N. SMITH.

Witnesses:

J. I-I. JONES, DoLPH PIHL.