US284929A

US284929A - wheeler

Info

Publication number: US284929A
Authority: US
Publication date: 1883-09-11
Anticipated expiration: 1900-09-11

Description

(No Model.) 2 Sheets- Sheet 1.

3. WHEELER. MEANS FOR AND METHOD OF PREVENTING OFFSET IN WEB PRINTING. N0.'284,929. Patented se g. 11, 1883.

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(No Model.) ELSheets-Sheet 2.

S. WHEELER.

MEANS FOR AND METHOD OF PREVENT-1m OFFSET IN WEB PRINTING. No. 284,929. PatentedfSept. 11, 1883.

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UNrrnn -STATES PATENT @FFlCEQ SETH \VHEELER, OF ALBANY, NENV YORK.

MEANS FOR AND METHOD OF PREVENTING OFFSET IN WEB-PRINTING.

SPECIFICATION forming part of Letters Patent No. 284,929, dated September 11, 1883.

Application filed January 3, 1882. (No model.)

To all whom it may cancer/1,;

Be it known that I, SETH \VHEELER, a citizen of theUnited States, and a resident of Albany, in the county of Albany and State of New York, have invented new and useful Improvements in Means for and Method of Preventing Offset in WVeb-Printing; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, forming part of this specification.

In machines in which the web of paper is rewound after it has been printed upon there will be within the printed web more or less offset, depending upon the ink used and closeness of the printed matter. This offset is so slight in the manufacture of wrapping-paper (because of the paper being a good absorbent of the ink) as to be little noticed. Vhen, however, highly-sized book or writing paper is being printed upon, several hours must elapse before the ink will be hard enough to be free from offset.

'In ordinary sheetprinting, especially with fine or colored inks, the printed sheets must be carefully laid between clean sheets, and not handled. This was an effectual barrier to fine work in web-printing until the introduction of my improvement, when such work was of a character not admitting of dividing the web into sheets immediately after the first impression, as in color-printing, where the paper is passed through the press for each color.

My improvement consists in winding into the roll of printed paper, as it is being printed, a secondary web, or one or more strips of paper, cloth, or other material, to prevent offset, and these strips may be continuous and longitudinal-with respect to the printed sheet or web, or of a suitable length to be placed transversely with respect to such web at proper intervals. The roll of printed matter is then laid away until it is sufficiently dry, when it is rewound into rolls of any desired size, the secondary web of paper being run out to be again used as before. Thus the press-work can go along continuously and at its usual speed, there being no delay by reason of taking precautions against liability to offset, such as waiting for the ink to sufficiently dry, 850., or attempting to dry it by proximity to heat.

\Vhen a web is completed, it is taken off the printing-press and laid asideuntil in a condition to be removed, during which interval of drying the press is at work printing and winding in the secondary web'or strips of paper or cloth on another web. Cords or even threads may be used in small rolls'to advantage in place ,of the strips of paper or cloth. This plan enables the printer to run up a large amount of printed web matter continuously into tightly-wound rolls of any desired size' that is to say, there is no necessity to-stop on the completion of one job before proceeding to another one, except to change the form in the machine for the second job. Thus a dozen different jobs may .be wound into one roll,

which may-represent an entire days work, which is then set aside until sufficiently dry to admit of rewinding into the small rolls.

In the drawings is represented one form in which my invention may be carried out.

Figure 1 is a side view of a Kidder printing-press, on which is arranged suitable apparatus for winding in the strips of paper or cloth. Fig. 2 is a vertical central section thereof, taken through the line 00 :20 of Fig. 3. Fig. 3 is a rear View of the press. Fig. 4 is a view of the friction-pad, looking in the direction of the small arrow on Fig. 2. Fig. 5 is a detached view of the roll on which the web of printed paper and the strips of paper or cloth are wound. 7

It is not deemed necessary to describe the parts of the Kidder Printing-Press, so called, or its operation, as such press is well known to the public, except so far as such press is altered or modified by the adaptation thereto of my apparatus for preventing offset. I remove from the top of the Kidder printingpress the cutting-shears and the receptacle for receiving the printed and cut sheets in a pile, and rearrange the printed paper-receiving mechanism, as follows: The printed sheet, as it leaves the bed a, against which it is pressed on receiving the impression from the type, passes over a guide-roll, Z), and around a guide-roll, 0, so as to run over the periphery of the delivery-roll d, a short distance from which it passes between such delivery-roll and the receiving-roll e, and is then wound 011 the latter roll.

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This traveling of the sheet upon the delivery-roll a short distance is necessary to insure the movement of the paper in a plane which will be at a right angle to a plane passing through the axes of both rolls d and e, which is essential in order to wind up the paper evenly and smoothly. The receiving-roll e is placed in a frame, f, containing slots 9 9, seats to permit of the roll adjusting itself in its bearings as it increases in size;

h isa shaft onwhich are placed two tape-carriers, 'i i, one near each end. Inthese carriers or spool-like receptacles are strips of paper, j j, or cloth, or other convenient material, which pass up to and 011 between two tensionrolls, k k, and then onto and over the freshlyprinted paper contained on the receiving-roll e, so as to be wound in with such paper, and thereby receive the offset or prevent its being received on the printed paper, which would be the case were such printed paper to be rolled up alone. The arrangement shown of the spools or roll for holding and introducing such strips or pieces of paper or cloth, j j, or equivalent material for preventing offset, may be changed so as to adapt the apparatus to other web-printing presses without departing from the principle of my invention.

Z is a friction-pad extending across the lower portion of the press and bearing upon the web of paper on as it leaves the paper-roll n. This pad is pressed down upon the surface of the paper by means of two arms, 0 0, made of spring-steel, one end of each of such-arms being attached to a bar, 19, the two bars pp being rigidly connected to the side frames .of the press, one to each frame. The friction-pad is held in position between brackets n n n n, placed on the bars 1) p. This will permit of the insertion and withdrawal of the frictionpadlthrough the openings 1 q in the side frames of the press whenever desired. The friction-pad, arranged to press upon the sheet of paper to be printed upon after it leaves the paper-roll a, is essential to insure a proper tension of such paper on the platen of the press.

I clain1 1. The method of preventing offset within a printed web of paper in web-printing, which consists in winding into the web, during the SETH XVHEIQLER.

Vitnesses 4 E. J. HEELER, R. M. I-LUU'ILTON.