US1238614A - Web-press. - Google Patents

Description

H. A. W. WOOD.

WEB PRESS.

APPLIGA'HON FILED APR. 26. 1915. RENEWED JULY 5. 1917.

Patented Aug. 28, 1917.

.IINITD %TATE% ATENT ll ll lffll di HENRY A. WISE WOOD, OF NEW YORK, Y., ASSIGNOR T0 WOOD NEWSPAPER 1VAGHIN- ERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA.

WEB-PRESS.

Application filed. April 26, 1915, Seria1 No. 23,837. Renewed July 5. 1917.

T 0 all whom it may concern:

Be it known that I, HENRY A. WVIsE 0013, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful lVeoPress, of which the following is a specification.

This invention relates to presses particularly double width newspaper presses, and the principal object thereof is to provide means whereby the staggering of the plates on the plate cylinder in such a press will be prevented from causing any unequal strains in the web. These render the web taut at one side and loose at the other which ordinarily causes frequent fractures of the web.

Reference is to be had to the accompanying drawings in which- Figure l is a side view of a double width web press constructed in accordance with this invention; and

Fig. 2 is a plan of the same.

In all double width newspaper presses having four plates abreast, running crosswise of the press, a full width web is used. After such a web has been printed it is then slit in half, and if its two halves are to be associated they are brought together either before or after the operation of folding. A full width web thus slit would produce an eight page paper. Sometimes, however, when six pages need to be run on a press, the web will be three pages wide instead of four, one of which pages is slit off from the other two and is thereafter associated with them to make up a six page product.

On four-page-wide presses it is the rule to have the two plates on one end of a cylinder and the two plates on the other end so difierently set with respect to their margins across the press that when the impression cylinder is passing over one margin it is supported by the plates at the opposite end of the cylinder, and when it is passing over the margin at the opposite end of the cylinder it will be supported by the plates at the near end. This is referred to technically as staggering plates. This has been found necessary as cylinders of such great length are apt to spring down into a margin if it runs throughout their full length, and bound up when the cylinder comes in contact with the leading edges of the next plates to be Specification of Letters Patent.

Patented Au 28, 1917.

Serial No. 178,785.

met. It is obvious that the staggering of plates obviates this trouble.

The staggering of the plates, however, is deleterious to the operation of the machine at high speed, because staggered plates re lease their hold on the web, first on one side and then on the other, and not simultaneously full across the width of the web. Thus the release of the web is staggered, as are the plates, which staggered release makes the web both alternately taut and loose at each sidetaut at one side when it is loose at the other, and vice versa. The fact that the differing and contrary strains are set up in the same web causes frequent fractures of the web, particularly at speed.

Now in order to avoid this, according to this invention, I slit the web before it goes to the printing cylinders, and thus, while using a single web roll, I am printing on a. plurality of webs, each independent of the other. In this way neither web is subjected to a staggered effect, but throughout its full width receives uniform tension, notwithstanding the fact that I have retained the advantage of staggering the plates themselves.

Ordinarily the two webs may be run side by side through the press as if they were one. This, with. good paper and careful pressmanship, is practicable, but with poor paper and pressmanship these independent webs may occasionally wander, when the edge of one may mount on top of the edge of the other and give trouble.

To prevent this I use two pathways so that from the moment the web is slit into two, each of the two has a pathway of its own except while passing through the printing cylinders. In this way the wandering of the webs, which usually results between the printing cylinders and the folder, cannot cause them to interfere with each other.

Referring to the drawings in detail, A and B are the two printing couples and C and D their respective inking apparatuses. Four plates P are shown staggered on each plate cylinder. The web is fed into the machine from paper rolls 10 as usual, and through feeding roller 11 with its feed belts 12. As the web passes over the feed roller 11 it is shown as being slit by means of a slitter 13 driven from the roller 11 through gears 14land 15. Of course the slitting operation can be performed at some other point. From this point the slit parts of web are guided to the first printing couple independently of each other and preferably are separate as shown, one part bending over a roller 16 and the other over a roller 17. These rollers are of full width and are shown as out of registration with each other.

But the webs enter the printing couple A side by side. As they leave the printing couple B they are again separated, one part passing over rollers 18, 19, 20, 21 and 22 into the folder E and the other over rollers 23, 24. and 22 into the folder E. 01 course the usual turning bars may be employed, or the two webs treated in any other manner, as if they had been individuals from the start.

By this construction it is possible to utilize staggered plate cylinders and at the same time allow the two parts of the web to adjust themselves to any strain or slackness every time the margin openings of the printing cylinders pass each other.

Although I have illustrated and described only a single embodiment of the invention, I am aware of the fact that many modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to the details of construction herein shown and described, but what I do claim 1s:

1. In a. printing press, the combination with the printing couples having a plurality of sets of plates located in staggered relationship, of means for slitting the web before it passes to the printing couples, and means for conducting the parts of the web through the press independently of each other.

2. In a printing press, the combination with a printing couple having a plurality of sets of plates thereon located in staggered relationship, of means for slitting the web before it passes to the printing couple, and means for conducting the parts of the web through the press in different paths independent of each other except while pass ing through the printing couples.

8. In a newspaper printing press, the

combination with a printing couple having ship on the plate cylinder thereof, with means for slitting the web, and means for conducting both halves of the web to the printing couple in paths located in different planes.

5. In a double width newspaper printing press, the combination of a printing couple having plates located in staggered relationship on the plate cylinder thereof, with means for slitting the web, and means for conducting both halves of the web from the printing couple in paths located in different planes.

6. In a double width newspaper printing press, the combination of a printing couple having plates located in staggered relationship on the plate cylinder thereof, with means for slitting the web, means for con ducting both halves of the web to the printing couple in paths located in different planes, and bringing them into the same plane while they pass through the printing couples, and means for conducting the half webs from the printing couples in paths located in different planes.

In testimony whereof I have hereunto set my hand, in the presence of a subscribing witness.

HENRY A. WISE WOOD.

l/Vitness:

BLODWEN W. J ONES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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