US1401422A - Printing-press - Google Patents

Description

C. A. MEISEL. PRINTING PRESS.

APPLICATION FILED MAR. 29. 1920.

Patented Dec. 27, 192 1.

2 SHEETS-SHEET I.

lnvenior: Charles r/ZMea'seZ, 3531 C. A. MEISEL.

PRINTING PRESS.

APPLICATION men MAR. 29. 1920.

Patented Dec. '27, 1921.

2 SHEETS-SHEET 2.

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imaginary oy UNITED STATES PATENT OFFICE.

CHARLES A. MEIEEL, OF DORCHESTER, MASSACHUSETTS, ASSIGNOR T0 MEISEL PRESS MANUFACTURING COMPANY, OF DORCHESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

Specification of Letters Patent.

PRINTING-PRESS.

Patented Dec. 27, 1921.

To all whom it may concern:

Be itknown that 1, CHARLES A. MnIsnL, a citizen of the United States, and a resident of Dorchester, county of Suffolk, State of Massachusetts, have invented an Improvement in Printing-Presses, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the rawings representing like arts.

The invention relates to printing presses and is more particularly concerned with the control of the paper passing therethrough to be printed upon, the object being to provide a construction which will keep a sheet of paper smooth and without wrinkles whereby, for example, it may pass through several successive couples to be printed upon thereby in proper. registration.

The invention will best be understood by reference to the following description taken in connection with the accompanying drawings, wherein:

igure 1 is a partl diagrammatic and partly sectional view 0 a multi-color printmgrpress embodying my improvements; and y i 1 2 is an enlarged fragmentary sectionfi view on line 2-2 of Fig. 1.

Referring to the drawings, I have there illustrated a type of ress in some respects similar to that shown in the patent to Cottrell, No. 293,313, Feb. 12, 1884, and embodyin a plurality of rotary couples ada to to print in separate colors and inclu 'ng interior im ression cylinders 5 and exterior late cylin ers 7, which latter may be provi ed with any suitable inking mechanism (not shown). Suitable throw-off means controlled by cam 9 on the main drive shaft may be provided. The printing couples are referably ranged around an lindrical surface in such manner that the contact lines between them correspond to the elements of the cylinder, using the word elements in' its geometric sense, and supporting surfaces 11 corresponding to segments of the cylinder are interposed between snccessive palrs of couples to support the sheet as it passes from one to another.

A suitable movable carrier is adapted to i move the sheets through the several couples surfaces 11 and the contact lines of the printing couples and to carry a sheet of aper over that surface. These gripper ars may be supported at either end by ring gears 14: (see Fig. 2) supported by rolls 15 (see Fig. 1) carried by the frame. The ring gears and the gripper bars have an appearance somewhat similar to a lantern Wheel or trundle wheel. The gears 13 may be driven in any suitable manner as by gears on the plate cylinders '7 and the gripper bars, receiving a sheet from the receiving cylinder 17 and transfer cylinder 19, carry it around the cylindric surface over the supporting surfaces 11 and through the successive couples, finally delivering it to transfer cylinder 21 and delivery cylinder 23 where it passes out of the press. The paper in its passage through the press maintains a uniform curvature and as it is always supported in the cylindric surface the linear speed is constant.

My invention more particularly relates to means for keeping the sheet of paper, which is held at its forward ed e by the gripper bar, stretched out smooth y over the cylindric surface as it travels so that parts there of may not become relatively displaced in such a way as to cause inaccurate printing thereon and for this purpose I provide means whereby the sheet is subjected to a constant retarding friction which stretches it out rearwardly from the gripper bar and, in the example shown, tensions it over the convex surface provided by the cylindric su porting surfaces 11.

n the example of my invention here shown suitable belts or blankets 25 are provided overlying the surfaces 11, these surfaces 11 bein disposed just far enough inside the cylinglric surface defined by the contact lines of the couples to bring the outer surfaces of these belts or blankets flush with that surface. The blankets 25 may be stretched over rolls 27 at the ends of the surfaces 11, binder rolls 29 and idler rolls 31 beneath them.

It will be understood that the paper passes through the press in a clockwise direction, viewing Fig. 1, and suitable means are provided for driving the blankets or belts 25 in a counterclockwise direction so that the upper run thereof which overlies the supporting surfaces 11 and makes contact with the unprinted side of the paper will be constantly moving in the direction opposite to that of the paper and will tend to smooth out the paper as it advances and keep the same properly tensioned. Any suitable means may be provided for driving the belts 25 but herein (see Fig. 2) sprockets are provided at the ends of rolls 27 and over these sprockets is trained the sprocket chain 35 engaging a driving gear 37 on the shaft of cam 9.

I have herein described my invention as applied to a particular type of multicolor printing press but obviously the principles are applicable to the feeding of paper in manyother types of pr ss and the description of the particular form of device here shown has had for its purpose the better understanding of a specific form of my inven tion and not a definition of the Scope thereof. The principles exemplified by this particular embodiment which I claim as new and desire to secure by Letters Patent I shall express in the following claims.

Claims: 7

l. A press comprising a plurality of printing couples the contact lines of which correspond to elements of a cylinder, means to carry a sheet around the cylinder, means for supporting the sheet as it passes to the couples comprising belts having runs lying in the cylindrical surface and means for moving said runs in the opposite direction to the travel of the sheet.

' 2. A press comprising a. plurality of printing couples the contact lines of which correspond to elements of a cylinder, means for feeding paper through said couples in succession, means for supporting the paper as it passes to the couples comprising belts having runs lying in the cylindrical surface and means for moving said runs in a direction opposite to the travel of the paper.

3. A press comprising a plurality of printing couples the contact lines of which correspond to elements of a cylinder, means exterior to the cylindrical surface for ad vancing sheet therealong' and sheet sustaining means inwardly of the surface hav ing a movement therein opposed to the movement of the sheet.

4. A' press comprising a plurality of printing couples the contact lines of which correspond to elements of a cylinder, means exterior to the cylindrical surface for advancing a sheet therealong and interior-1y disposed means for supporting the sheet in said surface including a member contacting with the sheet and constantly driven in opposition to the movement thereof.

5. A press comprising a printing couple, an annular sheetcarrier, a support leading to the couple, a blanket trained over the support and providing a cylindric surface for contact with the paper leading to the contact line of the couple and means for driving the blanket to move said surface in opposition to the travel of the paper.

(5. A press comprising successive couples each including an outer type cylinder and an interior impression cylinder and means for advancing a sheet along a path therebetween comprising a sheet advancing means exterior to the path. and driven means inward. of the path frictionally contacting with the unprinted side of the paper and moving in the opposite direction.

T. press comprising a printing couple including a type cylinder and an impression cylinder and means for advancing a. sheet along a path passing through the couple comprising means exterior of the path for engaging the leading edge of the sheet to dra the same forward and driven means inward of the path frictional] y contacting with the sheet and moving in the opposite direction.

8. A press comprising a printing ronplo, a sheet support leading thereto, means for drawing a sheet forwardly over said support by the leading edge thereof and a driven belt having a run arranged for contact with the sheet and moving in the opposite direction.

9. A press comprising a printing couple, a cylindrical sheet support leading thereto, means for drawing a sheet forwardly over said support by the leading edge thereof and a driven belt having arun tensioned over said cylindrical support and which moves in contact with the sheet in the opposite direction.

10. A press comprising one or more printing couples, means for drawing a sheet forward by the leading edge thereof for the printing operation, a belt having a run supporting the sheet in its travel and means for driving the belt to cause said run to move in the direction opposite to the travel of the sheet whereby to tension the sheet rearwardly from the drawing means.

In testimony whereof, I have signed my name to this specification.

CHARLES A. ME ISEL.

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