US1993538A - Printing press - Google Patents

Description

H; A. w. WOOD March 5, 1935.

PRINTING PRESS 2 Sheets-Sheet 1 Original Filed June 18, 1931 EY i March 5, 1935.

I H. A. w. WOOD PRINTING PRESS 2 Sheets-Sheet 2 Original Filed June 18, 1931 Patented Mar. 5, 1935 UNITED STATES PATENT orr cs PRINTING PRESS Henry A. Wise Wood, New York, N. Y., assignor to Wood Newspaper Machinery Corporation, v New York, N. Y., a corperation of Virginia ApplicationJune 18, 1931, Serial No. 545,198. Renewed August 2, 1934 6 Claims.

ii arrangement of single impression and multiple impression printing units, whereby a publication,

such for instance as a newspaper, may be printed;

partly in single color and partly in multiple colors or entirely in multiple colors, if so desired.

By the term single-impression unit and single-color unit I mean either an ordinary printing couple which makes an impression on one face only of a web, or a perfecting unit,-that is, a pair of printing couples through which a web is led in suchmanner as to receive an impression on each face thereof. Usually the impressions are in black but any othercolor of ink may be used andthe color of the printing on one faceof the webmay be different from that on the other. It will be understood therefore that the terms single-impression unit and single-color unit as used in the following specification, and claims refer to a unit which cannot print in more than one color on either face of a web, thereby distinguishingfrom a multiple impression unit, or multi-color unit which may make a number of impressions on a face of a web and said impressions may be in different colors.

In a copending application Serial No. 512,029, filed January 29, 1931, I disclose a novel form of multiple impression printing unit combined with a perfecting press unit, in which one unit is disposed above the other, and in another copending application Serial No. 520,292, filed March 5, 1931, I disclose an arrangement of multiple impression units and single impression units in which the units are arranged in tandem.

An object of the present invention is to provide an arrangement similar to that shown in the latter copending application wherein a tandem series of multiple impression and single impression units are arranged in alternation, means being provided, however, for leading a web from a single impression unit to either of the multiple impression units disposed respectively on opposite sides thereof. Thus a web printed in black on one face by a single color unit may be printed in multiple colors on the other faceby either of two multi-color units disposed on opposite sides thereof.

Another object of the invention is to provide means whereby the web may be led through the printing units in'such direction as to receive imon the same face thereof. p

A further object is to provide a multi-color unit with means for guiding aweb therethrough from opposite sides of the unit, the latter being reversible so that'the direction of the web through the unit may be varied at will.

My invention also includes assembling and folding meehanism with means forleading the pressions from the single and multi-color units Webs from various units thereto. I I prefer to use a multi-color press of the type disclosed in said co-pending application Serial No. 512,929, wherein a plurality of plate cylinders are disposed in an annular series about a single impression cylinder, each plate cylinder having its own inking system. However, my invention is not limited to the use of this particular form of multi-color press.

Other objects of the invention will appear in the following description taken in connection with the accompanying drawings and thereafter the novelty and scope of the invention will bepointed out in the claims.

In the accompanying drawings; 7

Figure 1 is a diagrammatic side elevation of a combined single color and multi-color press with a'pair of webs running through the press and being assembled into a unitary product; and- Fig. 2 is a similar view, but showing a different lead of the web through the printing units of the press. 7

Referring first to the arrangement shown in Fig. i, I provide a printing couple A and on eitherside thereof are multi-color units B and 13 re spectively. On the opposite side from the unit A, of the multi-color unit D, is a printing couple C. Thus there is a seriesof printing units consisting alternately of single color and multi-color units, which series maybe continued to include as many units as maybe desired.

The single-color unit A comprises an impres sion cylinder 11 and a plate cylinder 12 provided with the usual inking system 13. The multi-color unit 13, to the left of the single color unit A, comprises a single impression cylinder 14 and a plurality'of plate cylinders 15, 16, 17 and l 8 disposed annularly about the impression cylinder 14. Each of the plate cylinders of the'mult-icolor unit is provided with its own inking system 20 so that four different colors may be printed by the multi-color unit; p

A web a is led over a guide roller 21 and thence. between the cylinders of the printing couple A;

thereof. From the printing couple A the web is led over a guide roller 22 and about the impression cylinder 14 to receive, on the opposite face of the web, multi-color impressions from cylinders 15 to 18 inclusive. The web is led out of the multi-color unit about a guide roller 23 and then passes about guide rollers 24, 25 and 26 to a drag roll 27. Here a slitter roll 28 may be used to slit the web into a plurality of strips, two being shown at a and a respectively. An assembling mechanism, indicated generally at 29, is employed to bring the strips into superposed position before they are led over a roll 33 to a folder F. h

The units C and D are similar to the unit A and B respectively. The parts in unit D which correspond to parts in unit B are indicated with the same reference numerals with, however, a prime suffix. A web may be led through the units C and D in the same way as the web a is led through the units A and B. Thus after passing through the unit C the web 0 is led over roller 22 and thence about the impression cylinder 14' to receive impressions from plate cylinders 15', 16, 17 and 18". Emerging from the multi-color unit the web c'is led about the guide rollers 23 and 24' to a drag roll 30, where it is slit by means of a slitter roll 31 into a plurality of strips, two of which are indicated at c and 0 respectively. An assembling mechanism, indicated generally at 32, is employed to bring the strips 0 and 0 into superposed relation and also into vertical alignment with the strips 11 and a All of these strips then pass in superposed relation about the roll 33 and are fed to the folder F.

By the arrangement described above, a black impression may be applied to one face of each of the webs a and c by the printing couples A and C respectively, while the opposite faces of these webs will receivemulti color impressions from the units B and D. If desired, however, this arrangement may be varied as follows: Instead of passing the web a from the unit A through the unit B it may be led about a compensating roller 34 and thence under a roller 35 to the unit D. Here it may pass under the plate cylinders 17 and 18', and thence under roller 23' and 24 to the drag roll 30. By this arrangement the web a would receive a single color impression on one face from unit A and a double color impression on the other face from the plate cylinders 17 and 18. At the same time the web 0 may be led from unit C into the unit D over the roller 22' to receive impressions from cylinders 15 and 16'. Then the web may be led out of the unit over a roller 36' and as indicated in dot-and dash lines may be guided by rollers 37, 38 and 39 under the unit A and by the rollers 24 and 25 to the drag roll 27.

If desired the web 0 may be dispensed with entirely and the web a may be led around the impression cylinder 14' so as to receive impressions from the plate cylinders of the unit D in the following order: 1'7, 18', 15' and 16'. Thence the web will be led under unit D, as indicated by broken lines, by guide rollers 36, 37, 38, 40 and 24 to the drag roll 30. By this arrangement it will be observed that the web printed on one face by the couple A will receive four impressions on the other face from the unit D. While I have shown only two single color and two multi-color units in the drawings it will be understood that the series may be extended as desired and hence each multi-color unit is provided with guide rollers on opposite sides thereof. Thus the unit B is provided with rollers 35 and 36 to guide a web from a printing couple (not shown) at the left hand side thereof.

As stated above, the mechanism shown in Fig. 2 is the same as that shown in Fig. 1, but a different lead of webs through the printing units is shown in Fig. 2. Thus following the web 12, we find that it runs through unit A and thence under roller 23 into the unit B instead of about the roller 22 as in Fig. 1. The web thus runs in reverse direction about the impression cylin- 'der 14 and receives impressions in the order 18,

17, 16 and 15 from the plate cylinders of said unit. Emerging from the unit B the web b passes over the roller 22 and thence is led by means of rollers, 41, 39, 42 and 43 under and around the unit'B. Thereafter it is guided by rollers 25 and 26 to the drag roll 27. Here it is slit into two or more strips 12 and b by slitter roll 28 and is then assembled in the usual manner as described above before being led to the folder F. With this arrangement the single color and multi-color impressions are made on the same face of the web.

Instead of passing a web from unit A through unit B it may run from unit A through unit D, as indicated by broken lines. Thus the Web 1) passes over the roll 34 and thence over guide roller 36 instead of 35' into the unit D. The web then runs around the cylinder 14' in counterclockwise direction, receiving impressions from the plate cylinders 16, 15, 18 and 17' in the order named.' Emerging from the unit D the web passes under roller 24 and thence is guided by rollers 25 and 26 to the drag roll 27. With this arrangement the units B and C are idle and the assembling mechanism 32 is not used.

In order to permit of the various arrangements of web leads above described, the impression cylinders 14 and 14 are arranged to run either clockwise or counterclockwise as desired. Such arrangement being fully shown and described in saidcopending application Serial No. 512,029, filed January 29, 1931. The plate cylinders of units B and D must also be reversible and since the inking fountains are fixed, each inking system of the multi-color units is provided with a pair of transfer rollers 45 and 46 between the pick-up roll 47 and the roller 48, as described in said copending application, so that although the pick-up roll runs always in one direction the rotation of the inking drum maybe varied at will by changing the position of said idlers from that shown in full lines in Fig. 1' to that shown in full lines in Fig. 2.

While I have shown a preferred embodiment of my invention and several web leads it will be understood that the drawings and specification are to be taken as illustrative and not limitative of my invention. For instance, I may use perfecting press units in place of the printing couples A and C and my invention is not confined to the specific multi-color unit shown. It will be understood therefore that I reserve the right to make such changes in form, construction and arrangement of parts as fall within the spirit and scope of the following claims.

I claim:

1. In a web press, a pair of multiple-impression printing units, a printing couple located between said units, and means for leading a web from the printing couple through either of said units.

2. In a web. press, a pair of multiple-impression printing units, a printing couple located between said units, and means for leading a web from the printing couple through either of said units, each of said units being reversible whereby the web may be led in either direction through said units to print either face of the web.

3. In a web press, a pair of multi-color printing units, a single-color printing unit located between said niulti-color units, and means for leading a web from the single-color unit through either of the multi-color units.

4. In a web press, a pair of multi-color printing units, a single-color printing unit located between said rnulti-coior units, and means for leading a web from the single-color unit through either of the rnulti-color units, each multi-color unit being reversible whereby the web may be led in either direction through said unit to print either face of the web.

5. In a web printing press, a series of single-impression and multiple-impression printing units arranged in tandem with the single-impression units alternating with the multiple-impression units, and guide rollers at each side of each multiple-impression unit whereby a web may be guided into the latter unit from either of the immediately adjacent single-impression units.

6. In a web printing press, a series of singleimpression and multiple-impression printing units arranged in tandem with the single-impression units alternating with the multiple-impression units, and guide rollers at each side of each multipledmpression unit whereby a web may be guided into the latter unit from either of the immediately adjacent single-impression units, the multiple-impression units being reversible to print either face of the web.

HENRY A. WISE WOOD.

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