US1735100A - Web-registering means - Google Patents

Description

QW HLRABE 4 WEB REGISTERING MEANS Nov. 12, I 1929.

Filed June 28. 1928 mama Nov. 12 1929 UNITED STATES,

PATENT, OFFICE OTTO WOHLBABE, OF PLAUEN, (FEB-MANY, ASSIGNOR T O VOGTLKNDISCHE MASCHINEN- I'LBBIK (VORHALB: J. C. AND H. DIETBICH) AKTIENGESELLSQHAFT, OF PLAUEN,

GERMANY WEB-REGISTERING MEANS Application filed June 2a, 1928, Serial No. 288,948, and in Germany m 5, 1921.

, This invention concerns improved means for feeding a web in proper register. Devices have already been proposed whereby a paper-web which has previously been printed uponand then rewound to a roll may be controlled in such a manner that the speed of removal of said web is maintainedin conformit with the speed of feed of a. further rin roduct arriving, say, from a printmg mac ine. The electrical relays and mechanical control devices employed for this .p'ur se'need, however, acertain time period wit in which to respond. This has such a delaying effect upon the speed of travel of the paper-web that known arrangements of this type do not allow of the attainmentof i nearly the speed of operation ofthe printing machine which-it is essential shouldbe provided in, namely, newspaper printing machines. Furthermore for the proper operation of these devices gaugin marks on the previously printed paper "we for example imprints with an electrically conductin dyestufi or perforations, are necessary an these are such as to require for their production a separate step in the operations and loss of paper. V

A-sufliciently high speed of travel of the previously printed (paper web can only be attained if, in accor ance with this invention, the feed of the-latter is observed by special optical devices and a control device provided on the printing machine is set accordingly. In this case, first of all, no separate working step is necessary for the preparation of the gauging marks on the paper web since these may be printed in the same colour as theprinted representation; use may'even be made for this purpose of any characteristic line in said printed representation, for example the edge of the letterpress, so that separate gauging marks are unnecessary and the attendant loss of pa er is eliminated. This is a very substantiaf advance more particularly as the novel arrangement does not have any delaying effect upon the speed of operation of the printing machine.

The preferred optical devices have been used heretofore only for observing phenom- 50 ena in rotatingmachine parts. It was not known that they might also be employed-for the observation of the proper feed of paper webs to a rotary cylinder. To ths end according to the invention both the cylinder in question, wherein said optical devices are provided, and also the paper web are furnished with simple observation marks the mutual coordination of which indicates the regular feed or removal of the previously printed paper web. In this fashion a novel range of applications is created for said optical devices and,

moreover, a technical problem which had hitherto been re arded as insoluble in spite of the existing j emand is solved in a practically perfect manner.

. One embodiment :of the invention and C81? tain modifications thereof are illustrated by way of exam'ple'in the accompanying drawing in which:

Fig. 1 shows diagrammatically the associatin -mechanism* or the led-in web arriving r'om the printing machine and the su plements or enclosures coming from a win m -off reel.

ig. 2 illustrates in a partially sectioned ele' vation a difierential gear whereb the feedspeed of the sup lements may be ept in accord with that o the led-in webs and Figs. 3 and 4 are more or less diagrammaticelevations' of two different constructional forms of optical arrangement for observing the gauged sections of the supplement or enclosure-web.

The paper webs 1 coming from the newspaper printing machine and pro rly associated or brought together are gui ed over a 1 1d producer 2 and are then conducted thro gh entry rolls 3 to cutting mechanism 4, 5 the cylinder 5 of which transfers them to an associating cylinder 6. v

The supplement'or enclosure web 11 drawn off from a winding-oil reel and printed at some time previous, i. e.,independentlyof the newspaper printing, is conducted over a fold producer 12 to a draw-roll pair 13 and through the latter to cutting mechanism 14, 15 whence the severed su plement sections are supplied by means of aYJand-device 17 to a feed cylinder l6 and by the latter to the above mentioned associating cylinder 6. After the as.-

sociation of the supplement-sections with the newspaper-sheets the printed roducts are transferred by a delivery cylin er 7 to a delivery-device 8.

Since the speed of unwinding of the paper roll 11 containing the supplements is not positively dependent in any way upon the speed of travel of the newspaper paper-web 1, consequently. the feed speed of the supplements must be capable of being supervised and mg I ulated accordingly at any time.

The latter problem may be solved in many ways: For example,'the winding-oil roll for the supplements might be driven witha positive or force drive and its speed of driving adapted to the printing speed of the newsaper with the aid of differential gears or y the control device of a separate driving motor.

The constructional example illustrated in the drawing is, instead of the above, based on influencing the winding-off speed of the .roll by the action of the pair of draw rolls 13 and deriving the drive thereof in .a regulable manner from thedrive of the printing machine. To this end the cylinder 15 .of the cutting mechanism 14, 15 is positively driven from an adjacent shaft of the newspaper printing machine by means of a gear wheel 22 in a per se known mannerand its rotation is transmitted by means of an intermediate '.gear wheel 23.to a gear wheel 24 which is loosely mounted on ashaft 27 and is rigidly connected throughthe intermediary of a hollow shaft 25 with a gear wheel 26 also loosely mounted on said shaft 27. The latter wheel 26 meshes with a pinion 28 which is mounted on a gear wheel 29 mounted in turn, also in a loosely revoluble manner, on the shaft 27; this arrangement enables the pinion 28 to ,ride around the gear wheel 26 in the manner of a planet wheel. The wheel 29 may be rotated through a inion 30 by a hand crank 31 and when this device is not in use, it may be secured to the machine frame in its tem orary position in any appropriate fashion, or example by securing the hand crank 31. Instead of the hand crank 31, use might also be made of a non-return worm wheel gear or the wheel 29 might be driven continuousl or intermittently with the aid of a control able motor. 1

The pinion 28, referred to above, is made so broad that it meshes not only with the wheel 26 but also with a second gear wheel 32 which has one or two.teeth more or less than said wheel 26. The result of this is that a slight relative displacement occurs between the wheels 26 and 32' as the pinion 28 rides around the same. If, however, the toothed wheel 29 is locked in its temporary position, the driving movement of the toothed wheel 26 is transmitted through the pinion 28 to the toothed wheel 32. The latter is rigidly con-' nected to the shaft 27 which in turn drives the draw-in roll 13 through the toothed wheel gear 33, 34, 35. Thus the arrangement described enables the draw-in roll pair 13 to be driven through the intermediary of the cutting mech'anism 14, 15 and thus also in dependency upon the operating speed of the newspaper printing machine, although in a controllable manner so that the drawing ofl speed of the paper roll containing the supplements may be determined.

There remains the problem of enabling the paper web 11 drawn oflf from the supplement roll to be observed in such a manner as to allow it to be, readily determined at any time whether the cutting of the. paper web 11 by the cutting mechanism 14, 15 is taking place at the correct point between the separate printed reproductions. With the high operating speeds under consideration, this cannot be determined with certainty with the naked eye. For this urpose it would be necessary to open some 0? the finished discharged printed products in'order to examine the supplements or enclosures'which, however, 1s a considerable waste of time and also does not allow of perfect supervision of the influence of adjusting or regulating measures adopted.

To enable better observation of the regular feed of the supplement web gauge marks 40 are printed, during the normal printing of said web, at the edge thereof, at a slight distance from the point at which the cutting is later to take place. Corres onding to these a counter-mark 41 is provide onthe feed cylinder 16 by engraving or in some other fash ion so that dur ng proper cutting of the supplement web the a'uge'marks 40,1pr'ovided on the supplement s eets come to li'e in one line vwith the m'arks 41 furnished on the cylinder 16. Furthermore an o tical observation 'de'-- vice is mounted on sai cylinder 16 whereby the gauge marks 40 and 41 may be .observed with sufficient certainty in spite of the high running speed of the machine.

This object may be attained in the most simple manner by covering the end in question of the cylinder 16 by a hood such that, although the supplement parts can enter and leave the covered space, ver little light only can penetrate from outsi e. The covered space is then illuminated for a short instant during each. rotation of the printing 0 linder,

in dependency on the running spec of the rinting machine, b a lamp arran ed in the interior of; the hoo so that the e ge of the supplement-parts and the adjacent part of the I surface of the cylinder 16 ma be observed, throughan openlng in the hoo always in the position which they occup for the short instant of illumination by t e said lamp. On account of the short eriod of the illumination these parts give t e a pearance of being stationary so that the mar s 40 and 41 on the supplement sheet and-the cylinder 16 respec- Fi 2. other form of observation device is il-.

tively may be observed with certainty and thus the feed speed of the supplement web 11 may then be modified as necessary with the aid of one of the above described alternative controlling arrangements, for example by means of the differential gear illustrated in lustrated in Figure 3. In this case a screening disc 42, which rotates with the cylinder 16 and has an openin 43 in the vicinity of the point at which t e mark 41 is located on the cylinder 16,, is secured to the end of the cylinder 16. In addition the disc 42 supports, in the vicinity of this opening 43, an optical lens system 44 through which the marks 40 and 41 may be observed in a satis-' factory manner. The optical system 44 is so arranged that a virtual ima e of the marks 40 and 41 is formed in the axis of the cylinder 16. To allow of perfect observation of said marks, 'a continuously burning lamp 45 and also a screen46 provided with an opening through which the observer looks, are provided on the machine frame in addition to the disc 42. Thus the gauge marks 40 and 41 are always seen when the opening 43 in the disc 42 passes the lamp 45 and the gauge marks 40 and 41 lie in one line with the optical system 44 and the opening in the screen 46. To simplify the observ'ation'of the gauge marks, it is recommended in this case also that the end of the cylinder 16 employed should have the light excluded as far'as possible by the aid of a hood.

A further alternative for the observation of the gauge marks will now be explained by reference to Fi 4: In this arrangement the tnmnions 50 o the cylinder16 are bored axially and furthermore a prism stem 52, 53, 54 rotating with the cylinder an enabling the mark 41 on the periphery of said cylinder 16 to be observed is associated with'the bore. The li ht issuin from arotatin lam ed after it as illuminated t e a jaeent parts of the cylinder 16. and the supplement-sheet, through the-prisms 52, 53 and 54 into the axial direction of the cylinder 16 sothat the illuminated parts may be observed with, for example, the assistance of a mirror 55. In order to bring the image to rest, a tube 56 in which a rism 57 and if necessary a lens 58 are locate is mounted in the abovementioned axial bore in the cylinder trunnion 50. The tube 56 isrotated to ther with the prism 57 and the lens 58 in t e direction of rotation of the cylinder 16 but at half the rate of rotation thereof. 1 y i The above described examples do not exhaustall the alternative means for observing the u marks. It may be stressed in particu at t 'at the observation point may be removed from the cylinder 16 to otherlocations,

for exam ie to one of the cutting cylinders 14, 15 an 'even to the uncut paper web of the enclosure stri 11." Inthe latter case, it is to be recommen ed that-the web 11 before it 'reaches the fold guide 12, should be carried around an observation cylinder, the periphery of which corresponds to the size of the separate enclosure sheets. It is then possible, with the aid of a lamp, such as that a above described, which lights up periodically during each rotation of the printing cylinder of the newspaper printing machine, to observe the paper web 11 in relation to a mark provided, in the vicinity thereof. on the machine frame and to regulate the feed speed of the supplement web accordingly.

However the latter speed may be determined, it gives in every case a reliable indication in what measure and in what direction the device for'controlling the feed of the supplement sheets should be operated to efl'ect correction. If said sheets arrive too rapidly and their gauge marks 40 outstrip those on the printing machine, for exam le thegauge marks 41 provided. on the cyhnder 16, then the feed speed of the enclosure sheets must be decelerated and in the opposite case, must be accelerated. Accordingly, with the diflerential gear illustrated in Figs. 1 and 2, the hand crank 31 must be released from its locked position and rotated in the one or other direction; it will be seen that the desired purpose may be attained in a simple and. ready fashion.

What I claim is i 1. For maintaining register between a moving web and a second web with which the first is to be associated, an arrangement comprising in combination, auging means on saidarrangement adapte to cooperate with complementary gauging means on said first mentioned web, an observation device for ascertaining the in or out of register relation between said two auging means and adjusting means for tea ily modifying the feed of the first mentioned web.

2. For. maintaining a web in register with asecond webwith which it is to be associated, an arrangement comprisin driving means for the feed of the latter web, riving connections for transmitting a drive from said means to the feed of the first mentioned .web, an adjustin device whereby said drive may be modi ed to vary the feed of said first mentioned web, gauging means on said arrangement adapted to cooperate with complementing gauging means on said-first mentioned we an vo servation means for determining the in or out of register relation between said two gauging means.

3. For maintaining a printed aper web in register with another web for t e urpose ofensnrin'gproper association of s sets to be subsequently cut therefrom, an arran ement com rising an adjustable driving evice for e first mentioned web, gauging means provided on a cylinder around which said web, furnished with complementary gauging means, is passed and an observation device for ascertaining the relation between said guaging means.

4. For feeding a paper supplement web in proper register from a winding-0E reel to a printed product arriving from a printing machine, an arrangement comprising in combination adjustable feeding means and cutting means for said web, an associating devicefor combining the supplement with said printed productfgauging means on one of the elements of said feeding and cutting means and an observation device for determining the relation between said gauging means and complementary gauging means on said web.

. of ensuring, proper associationof sheets to 5. For feeding a paper supplement web in proper register from a winding-off reel to a printed product arriving from a printing machine, an arran ement comprising in combination adjusta le feeding means and cutting means for said web, an associating device for combining the supplement with said printed product, gauging means on a cylinder of said feeding and cutting means and an observation device for determinin the relation between said gauging means and complementary gauging means on said web, said observation device comprising a lamp for periodically illuminating said gauging meansgmd a rotary objective piecefor projecting a virtual image thereof in the axis of rotation of said cylinder.

' 6. For maintaining a printed paper web in register with a second web for the purpose be subsequently cut-therefrom, an arrangement comprising'in combination with adjust able. driving means for the first mentioned ,web, a cylinderover which the same is fed ---.and having 'a'size in simple relationship to the printing cylinder, gauging marks pro-" vided on the former cylinder and means for determining the condition of said marks in regard to complementary gauging means on the first mentioned web, said gauging means remaining in useful contiguity or association with each other over a wide angular range.

7 A device as per claim 2, in which said driving connections comprise differential gear adapted to transmit the drive of the second webto said first mentioned web.

8. In a device as per claim 3, in which said observation means include a rotary optical prism system for the deflection of said observation means along the axis of the cylinder and an oppositely rotating prism adapted to bring the observed image to rest.

In testimony whereof I aflix In signature.

QTTO W0 ABE.

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