US1273926A - Web-feeding mechanism. - Google Patents

Description

F F a.

INVENTOR.

O z W Z-W Q A YS- UNITED STATES PATENT OFFICE.

oscm nosnn, or. NEW YOBK, n, Y., AssIGNo TO n. HOE AND co., or NEW Yotax, N. Y.,

n oonrommon or NEW Yon WEB FEEDING MEGHANISM.

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Speciflca'on of Letters Patent.

Patented July 30, 1918.

Application fil'ed November 1 7, 1915. Serial No. 61,898.

To whom it may concern:

Be it known that I, OsoAR RO SEN', a citizen of the United States, residing at New York city, county of Kings, and State of New York, have invented certain new' and useful Im rovegnents in-Web-Feeding Mechanism, fu ly described and re resented in the following specification an the acor npanying drawings, forming a part of the same.

This invent-ion relates to certain inprovements in the rols or bars' employe in web feeding mechanisn usedfor giidng and directin the web through the machine.

In t is class of nechanism, and articnlarly mechanis n for forwarding en' d recting w'ebs such'as are employed' i'n rtaryweb prntin `machines, it isfdesirable to' 'ave the turrier ars and for Wardin and ot errolls over which the fpaper' or ot eif web' niaterial is led, and by which it direeted, 'of sn'ch character that little'ftietiri will 'be deireloped between the web'an'd'the roll or'bar, so that the web will'be easil and accurately dircted throughthe machine and liabi'lity to iiijfiry r'ed 'ce'd te nliniiniiin. It`is fur-- ther' desirable, particnl'arly 'where'the chine is handlin'g freshly printed' products, such 'as a'frshlypi inted perfe'cted web, th'at the printed oi'ton of the web be li'fted away'froni t 'e siirfate of the roll oi" bar over which the web'travels, so as 'to avoid smudgin' of'the f'reshink, the web being supporte' in its travel'byits iin'printed na'rportiois.

It is the objectof the present invention to provide an iinproved cons'trnction, for use in web feedin ,-machines`,whereby the f'r'iction betweent e' web and the rol ls or bars overwhichitis direct'ed or' led, s' reduced to a' miniinu'm, the constrnction being' such that the' frition du'e`to the forward'movement of the 'web is' reduced to' a inini'rnum and also any friotion due to a slight sidewise movement of the w'eb is also likewise r' fli ce It is a firther object o f the nventon to provide' :i cns'trction in wh'ch a prodnet, sich as a fr'eshly printed web, may be directed or through a feeding mechanism, the web being supported on its nrinted portions or margins so that the riotion of the web as it passes over the bar is reduced to a minimum and the printed portions of the web are not in contact with the feeding mechanism. l

For a full understanding of the invention, reference niay be had to the acconpanying drawings, in whichi Figure' 1 is a plan view showing the preferred form of theroll' or bar employed with a printed web for eflecting the 'desired e igl 1 ig. 2 is a section taken on the line 2-2 of Fig.'1; f

Figs. 8 and 4 are detail sectional views showing various niodifioations which' maybe m y ,and a ig. 5 is atop plan view of the cover plate slown in Fg. 4 for 'retaining the'balls in p ace.

Beferring now to the drawings, the invention has been shown in connectionwith `art of a printing machine in which the pro not to.be forwarded 'is'alprinted paper web, though 'it will be understood that the invention'is adapted for and may be used'in 'other web feeding rnachines in' which a rodiict other than a printed webis frwardbd' and directedthrough the machine. Insnch web printiiig machines, the printed web is foriv'arded and directed 'through 'the 'fnachine over variois rolls orbar's. The web is frwarded byanysuitable forwardin'g mechanisrn, as rolls Ri While'the'i'iveiitin may be employed` with any of the rolls or bars in the machine, in the particnlarconsti ucv Jllt ',4

tion llustrated lt has been shown 1n connection with the turner r'oll o 'r angl e roll injarked 1, though it` will be understood that the invention is'a plicable to and mav be used if desiied wit any of the rolls rba'rs over which' the web is' led or by which it is directed. g

Constructions embodying the invention in its preferred form' Will include in combination with these rolls antifr'iction deviees which shall act to reduce to a niini'mnni the friction between the paper and the'surface of the roll over which 'the'` paper travels,

these devices being preferably of such churacter as to reduce both the friction due to the forward travel of the paper, or any frietion which may be caused by a slight sidewise movement of the paper owing to the paper being improperly led or directed through the machine, or such sidewise frietion due to other reasons. While the par- `ticular construction of the antifriction devices employed for effecting these results may be varied, in the best constructions these antifriction devices will be in the form of a plurality of balls 2 which are mounted in the roll or bar 1. These balls will be niounted in the bar so as to have a free turning movement therein, and, furthermore, will be mounted so that they will project slightly above the surface of the roll or bar with which they are employed.

These balls mav be variously arranged on the roll or bar. `Where the product which is passing through the machine is, as in the present instance, a product which has a freshly 'printed surface, preferably the balls are arranged as shown in Fig. l, the balls being arranged on the bar so as to form a projecting surface which will come adjacent the margin or unprinted portion of the paper web as it goes over the bar. As shown in Fig. 1, in which a turner roll is shown, that is, a roll which turns and changes the direction of the travel of the paper, this is effected by providing the roll with a groove cut spirally about the roll. The balls 2 are arranged in this groove, and are loosely held therein in any suitable manner. As shown, for instance, in Fig. 2, a groove 3 is provided with a ball-retaining trough 4: suitably held in position in the groove. With this construction the printed surface of the web is kept away from the surface of the roll and is supported at its nargin, and the balls act to reduce both the forward friction of the web and any sidewise friction, the balls loosely turning in their groove.

In machines operating to produce printed products, and particularly where the product has dried, and in other machines where unprinted and dried products are being forwarded, it may be desirablc to increase the number of balls over the surface of the roll so as to provide a greater anti-friction surface for the paper to travel upon, and such construction is within the scope of the present invention. While the number and arrangement of the balls may be varied, two arrangements are shown in Figs. 3 and 4. ln Fig. 3 the roll is shown as provided with a groove 5 having a ball retainer G, the balls being arranged in the retainer in twos. In Fig. et the balls are shown as arranged in threes in a groove 7 in the bar, held in place by a cover plate 8, the balls preferably being arranged with a cover plate as shown in Fig. 5, that is, with groups of two balls alternating with groups of three balls along the surface of the roll where the paper is to come in contact.

V/hile the invention has been shown and described in relation to a turner bar for web printing machines, it will be understood that it may be used in various other relations in which paper is to be forward and directed through a machine, and while the antifriction devices have been shown as arranged in certain numbers and in certain relations, it will be understood that a wide Variation may be made in the arrangement and number of the balls without departing from the invention.

What is clainied is:

1. In a web feeding device, the combination with means for forwarding a web of material, of a roll or bar over which the web is led, and devices carried by the roll over which the web passes, said devices forming an antifriction surface conforming to the position of the edges or other unprinted portions of the web in its traveling movement.

2. In a web feeding device, the combination with means for forwarding a web of material, of a roll or bar over which the web is led, and antifriction devices on the roll projecting above the surface thereof and forming an antifri'ction surface for' the web conforming to the position of the edges or other unprinted potions of the web in its traveling movement.

3. In a web feeding device, the combina- -tion with web forwarding means, of a roll or bar over which the web is fed, and a plurality of balls loosely mounted on the roll and arranged to project above the surface thereof, said balls forming an antifriction surface for the web to travel over.

4. In a web feeding device, the combination with web forwarding means, of a turner bar over which the web is led, and a plurality of balls on the roll arranged spirally of the roll and projecting above the surface thereof, said balls forming an antifriction surface over Which the paper travels on its unprinted margins.

In a web feeding mechanism, a roll or bar over which the web travels provided with a plurality of loosely inounted balls arranged to pro ect above the surface of the roll and into the path of the web.

6. In a web feeding mechanism, a turner roll or bar over which the web travels provided with a plurality of balls arranged spirally of the roll and projecting above the surface thereof and into the path of the web.

7. In a web feeding mechanism, a roll or bar over which the web travels having its surface provided with a plurality of balls web.

and. projeoting above the and into the path of the 8. In a, web feeding mechanism, a roll or 5 bar over which the web travels provided with a slot, ers allowing th balls in the slot, and ball retaine bells to have free turning v path of the Web.

movements in the s1ots, the balls proj eoting above the Surface of the rolls and into the 10 In testimony whereof, I have hereunto set my hand.

I OSCAR ROESEN.

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