US1638560A

US1638560A - Wrinkle remover for web rolls

Info

Publication number: US1638560A
Application number: US586419A
Authority: US
Inventors: Ernest G Beveridge
Original assignee: R Hoe and Co Inc
Current assignee: R Hoe and Co Inc
Priority date: 1922-09-06
Filing date: 1922-09-06
Publication date: 1927-08-09
Anticipated expiration: 1944-08-09

Description

Aug. 9,1927. 1,638,560

E. G. BEVEREDGE WRINKLE REMOVER FOR WEB ROLLS Filed Sept. 6, 1922 Patented Aug. 9, 1921.

UNITED STATES PATENT OFFICE;

ERNEST e. nnvnnrnen, or BROOKLYN,

YORK.

new YORK, assmnon, BY MEISNE assxcnmums, r 3. non AND co., ma, ornnw YORK,

N. 'Y., A CORPORATION OF NEW wnmxm armovnn roam nous.

Application filed September 6, 1822. -Seria1 No. 586,419.

This invention relates to certain improvements in devices for smoothing out or removing wrinkles in webs as the web comes from the web roll, and has been designed particularly for use in smoothihg out the webs used in'printing machines. 1

These webs, as-ordinarily supplied to the printer, are wound on cores and are of varying widths, some of the rolls being Very wide, particularl those adapted for printing in double-wi e presses. In the winding of the webs into the roll form, there is a tendency for the webs to wind more tightly at the edges than in the center of the roll with'the result that wrinkles are formed in the webs, particularly at the outer edges thereof. In high class printing, either black or color, it is very desirable that the web should pass between the printingl members with a smooth surface and wit out these wrinkles, because if these wrinkles'be present, an impression results which is very disadvantageous inthe printing, particularly in the fine printing produced in intaglio or rotogravure machines.

' It is the especial object of the invention to produce a device by which the unevenness in the web caused by wrinkles, is eliminated so that the web goes to the printing couple with a smooth and unwrinkled surface.

. A further object of the invention is to produce a device for effecting this which will be of simple form and which may be capable of adjustment 'widthwise of the web so that the wrinkles may be smoothed out at any particular point in the web at which they may occur.

With these and other objects not speci' fically referred to in view, the invention consists in certain novel parts, arrangements andcombinations which will be fully described in connection with the accompanyingdrawings and the novel features thereof pointed out in the claims hereunto appended.

In these drawings v Figure 1 is a side elevation of so much of a printing machine as is necessary for an understanding of the invention, the figurevbeing partly broken away and partly in section; p

Figure 2 is a side elevation, partly in secciion, of the improved smoothing device; an

Figure 3 is a detail plan view of part of the construction shown in Figure 2.

Referring now to these drawings .The invention has been illustrated as employed in connection with printing machines. It is understood, however, that it may be used in other relations where it is desired to remove wrinkles from free running webs. The particular machine selected to illustrate the invention is a rotary intaglio press, one printing couple of which is shown mounted in side frames 1, which are of,any

usual or suitable construction. This printing couple, in the particular construction illustrated, includes a form carrying cylinder 2 running in a fountain 8, a doctor 4: being provided, as is usual in this class of machines for removing surplus ink. This form cylinder cooperates with an impression cylinder 5 mounted above the form cylinder in suitable bearings 7 carried from brackets 8 secured to the side frame 1, This impression cylinder is, as usual, adjustable by means of adjusting collars 9. The web is supplied from a suitable web' roll, (not shown) this roll passing over tension roll 10 to and between the. printing cylinders, over a guide roll 11 to and over'a drying drum 12 and then over a guide roll 13 to be further operated upon in the machine, as per fecting.

In accordance with the invention, means are provided for smoothing out the wrinkles in the free running web, prior to the web passing between the printing couple, this smoothing device being preferably so arranged that by a simple manipulation the wrinkles may be removed from the web at any point in its width. While the specific embodiment of these means may vary widely, in the particular construction illustrated there is provided a smoothing member over which the web is led with suitable tension, this smoothing member being marked 14, preferably of metal, and having an outer surface 157pol-' ished so as to provide for free running of the web. In the specific embodiment of the invention illustrated this member 14 is in the form of a half round made so that its bearing surface, that is, the surface with which the web contacts, is adjustable widthwise of the web. In the particular construction illustrated this is effected by forming the half round of a light metal having suflicient flexibility so that its surface can be flexed toward or away from the web at any desired point.

widthwise thereof. While ,this may be effected in various ways, in the-device shown, there is provided a support in the form of a rod'or bar 16 carried in brackets 17 do ending from the side frame 1, before re erred to, this rod or bar being held in position in the brackets by set screws 18. This rod supports the half round which is secured at each end to the rod by bolts 19 having heads 20 and provided with' lock nuts 21 on each side of the bar so as to firmly hold the half round in position. Intermediate the supporting bolts 19, the bar is drilled at a plurality of points to form passages in which-work adjusting screws 22, these adjusting screws be ing provided with rounded heads 23 which bear against the inside of the half round, as clearly shown in Fig. 2, the other end of these screws being provided with grips 24 by which they may be easily and readily turned. With this construction, it will be seen that by adjusting the desired screw or screws 22, the half round may beflexed or bent outwardly, thus acting to spread the web as it passes over the round and remove any wrinkles that may be present therein, so that the web will'go to the printing couple with a smooth surface. To permit this in and out movement of the half round, the latter is slotted at each end, as indicated at 25 inFig. 3, the bolts 19 working in these slots. By providing the setscrews across the round this action may be caused to take place at any point widthwise of the web where the wrinkles may appear and the adjustment is a very simple one to effect.

While the invention has been illustrated in its preferred 'form, it will be understood vice and that the invention is not limited to to which a web is forwarded for printing, of i a metal tensioning device having a smooth curved surface in contact with the web and over which the web runs, and means for independently adjusting the surface to and from the web "at a plurality of points widthwise thereof.

2. A web smoothing device comprising a metallic element extending widthwise of the web and having a smooth curved surface contacting with the web and over which'the web runs, and means for independently adjusting the contact surface of the element toward and from the web at different points widthwise thereof.

3. A web smoothing device havin a curved surface of flexible metal over w ich the web runs, and means for flexing the surface toward and from the web at a plurality of points widthwise thereof.

4. A web smoothing'device comprising a half round of flexible metal, a support therefor, and means for flexing the surface of the half round toward and from a web passing thereover. 5. A web smoothing device comprising a curved surface of flexible metal extending widthwise of the web, and a plurality of ad-' i ERNEST G. BEVER'IDGE.