US746746A - Device for preventing smearing. - Google Patents

Description

PATENTED DEC. 15, 1903.

o. ROBSBN. DEVICE PGR; PRBVBNTING SMBARING.

APELIGATIUN FIILED JUNE l. NGL

2 SHEBTS-SHEET 1.

N0 MDDBL.

LIU

,Tillll No. 746,746. PATENTBD DEG. 15,1903;

0. RUESBN.

DEVICE FOR PRBVBNTING SMBAMNG.

APPLIGATION FILED .TUNE l. 1901.

No MODEL Z SHEETS-SHEET Z.

Invertia?" UNITED STATES v:Patented December 15, 1903.

OSCAR ROESEN, OF NEW-YORK, N. Y.,

AssIcNo'R To ROBERT HOE, OE NEW YORK, N. Y.

DEVICE FOR PREVENTING SIVIEIUNG.k

SPECIFICATION formingpar't of Letters Patent N o. 746,746, dated December 15, 1903.

Application inea June 1, 1to1'.

.To all whom it may concern:

Be it knownthat I, OSCAR ROESEN, acitizen of the United States, residing at New York, county of New York, and State of New York,

5 have invented certain new and useful Improvements in Devices for Preventing Smearing, fully described and representedin the following specication and the accompanying drawings, forming a part of the same.

This invention relates to certain improvements in devices for preventing offset and smearing in printing-machines. 'Y

In printing-machines, and more especially in machines which print upon webs, station- I5 ary guides are employed for the purpose of supporting the traveling web and for giving it direction.. When a traveling web which has been freshly printed passes over such a stationary guide, it is liable to become smeared, especially where, as in many instances, the web carries heavily-printed cuts. The difficulty referred to frequently occurs in forwarding webs where the webs are caused to pass around angle or turner bars for the z5 purpose of changing the direction of Amovement. In such cases the web is strained around the bar, and its freshly-painted surface, especially where this surface, as has been before stated, is composed in whole or in part of heavily-inked cuts, is aptY to become rubbed or smeared, and, furthermore, any ink which is rubbed o onto the bar will set off onto the succeeding portions vof the web.

The invention has for its object to produce an improved means whereby webs may be led over stationary guideswithout becoming smeared or without liability of offset.

With this and lother objects in view the invention consists in certain constructions and in certain part-s, improvements, and com-r. binations, as will be hereinafter fully de-- Serial No. 62,729. (No model.)

being shown in section, the view being taken iin the direction indicated by the arrow 2 in Fig. l. Fig. 3 is a front view of the construction shown in Fig. 1,' the View being taken in 55 the direction of the arrow 3 in that figure. Figs. and 5 are detail sectionalviews illustrating a modified construction.

Referring to the drawings, l indicates portions Of the side frames ofa printing-machine, 6o which frame may be of any approved construction. These side frames are connected by cross-'webs or brace-bars V2 and 3. In the present. machine the printed product consists of a perfected double wide web the columns of which are at right angles to the general direction of movement of the web. This web may be printed upon by printing-couples of any approved type; but since the construction of these couples has no relation to 7o the present invention they are not shown. The web after leaving the printing-couples is led over a .guide 4, which is or may be a compensating roll of the usual type. After leaving the compensating roll the web passes over a slitting-roll 5, 'where it is divided into two sections A and B by means of a slitter 6 of any ordinary construction. After leaving the slitting-roll the portion A of the web is led forward and' over a stationary 8o guide 7, which inn the present instance is a turner-bar, by which the web is given a direction at right angles to the line of move-l ment it had when it lefty the slitter. The portion B of the web after 'leaving the slitter 85 is led under a roll 8 and-then forward to .a :stationary guide 9, which Vin the present instance is a turner-bar, by which the direction of the web is changed, so that it runs beneath the portion A in order that it may 9o be associated therewith. The portion A of ythe web is led over a suitable guide-roll l() to a cutting and folding mechanism Il, and the portion B is led over a roll 12 to the same cutting and folding mechanism, the two portions being associated by this mechanism. y

In order to prevent-smearing and offsetting as the web passes over the guides 7 and 9,- which, as before stated, are turner-bars, a moving shield is employed. This moving mo shield may be constructed and operated in various ways. In the preferred form of the sns construction the shield consists of a belt, which may be formed of any suitable material,said shield passingbetween the stationary web-guides and the traveling web and being caused to move at a rate of speed substantially equal to the speed of the web. While an independent shield might be provided for each Web-guide, in the preferred form of the construction the belt which forms the shield will be endless, a single belt being utilized to form the shield for both guides.

The belt which forms the shield may be arranged and driven in any suitable manner. In the construction shown, however, the belt 13, which forms the shield and which is substantially equal in width to the printed matter ou one of the sections A B, meets the web as the web passes over the slitting-roll 5, said belt passing between the slitting-roll and the web. After leaving the slitting-roll the belt runs forward beneath the web and passes around the guide 7 and' between said guide and the web. After leaving the guide 7 the belt passes over angle bars 14 15, which change its direction, as clearly indicated in Fig. 1. After leaving the angle-bar 15 the belt passes over and around a roll 16 and between this roll and a roll 17. After leaving the roll 17 it passes onward to a guide 18, which is located over the section B of the web and which changes the direction of movement of the belt, as clearly indicated in Fig. 1. After leaving the guide 18 the belt passes onward and around the guide 9, being interposed between this guide and the section B of the web. The belt follows the run of this section until both reach the roll 12, before referred to as the roll over which this section passes to the cutting and folding mechanism, after which the belt takes a turn backward around the roll 12 and passes over a turnerbar 19. This turner-bar 19 is located in the construction shown under the bar 7 and operates to turn the belt so that it runs back to a roll 20, which is preferably a driven roll, as will hereinafter appear. s

The slitting-roll 5 will preferably be driven as is usual. The means by which this roll is driven may be of any preferred type. As shown, a gear 21 is provided, which is mounted on a suitable stud on one of the side framepieces and which is driven from any suitable moving part of the machine by any suitable train of gears or other connection's. This gear 21 meshes with an intermediate 22, also mounted on the frame of the machine, and this intermediate is in mesh with a small gear 23, which is mounted on the shaft 8' of the roll 8, this gear being also located on the outsideoftheframe. TheshaftSisprovided on the inside of the frame with a gear 24, which meshes with a gear 25 on the shaft 5 of the slitter-roll.

The shield may be driven by any suitable arrangementofdrivingmechanism. Asshown, the rolls 16 and 17, over and between which the belt passes, are driven rolls. While the movement of these rolls may be derived from any suitable moving part of the machine, as shown, the shaft 8 is provided with a bevelgear 26, which meshes with a similar gear 27 on a short shaft 28, journaled in the crossbrace 2, before referred to. The other end of this short shaft 28 carries a gear 29, which meshes withagear 30on theshaftoftherolll7, said shaft having its bearings in cross-braces 2 and 3. The shaft of the roll 16 is provided with a gear 31, which meshes with the gear 30, said shaft also finding its bearings in the cross-braces 2 and 3.

While the rolls 16 and 17 may be depended upon to give the belt its movement, in the construction shown the shaft which carries the roll 20, before referred to, is also preferably provided with a gear 33, said gear meshing with an intermediate 34, which is driven from the gear 25 on the shaft 5.

Inasmuch as the belt which forms the shield travels when in contact with the printed web at the same rate as the web, there is little liability of oset; but should some ink be set off onto the belt it will have an opportunity to dry between the times when the belt leaves the first portion of the web and comes in contact with the second portion.

In the construction shown in the figures so far described the belt has a plain surface, so that its entire surface may come in contact with the paper. If desired, however, ribs, which may be in the form of tapes 35, (see Figs. 4 and 5,) may be formed on the belt, so that the major portion of the belt will not come in contact with the web.

While the construction which has been described forms a preferred embodiment of the invention, it is to be understood that the invention is not to be confined thereto, but that various changes and modifications may be made therein without departing therefrom.

What is claimed is- 1. The combination with an angle-bar forming a stationary web-guide which changes the direction of movement of the web, of a shield interposed between the web and the guide, and means for driving the shield, substantially as described.

2. The combination with a plurality of angle-bars forming guides for a web or webs, of an endless belt passing around the bars, said belt being interposed between the web and the bars and forming a shield, and means for driving the belt, substantially as described.

3. The combination with a slitting mechanism, of angle-bars for guiding parts of the slit web, an endless traveling belt forming a shield and passing between the bars and the web, means for supporting and guiding the belt, driving-rolls for the belt, and means for operating the rolls, substantially as described.

4. The combination with means for forwarding a plurality of webs, of angle-bars for changing the direction of movement of the webs, an endless belt forming a shield pass- IOO IOR u IIO ing around the bars and between the bars and the webs, guides for controlling the movement ofthe belt,and driven rolls around which the belt passes, substantially as described. A

5. The combination with a stationary webguide, of a shield interposed between the web and the guide, said shield consisting of a belt having a plurality of ribs on its operating-surface, and means for driving the shield, substantially as described.

6. The combination with a stationary webguide, of ashield interposed between the web and the guide, said shield consisting of an endless belt having a plurality of ribs on its operating-surface, and means for driving the shield, substantially as described.

7. The combination with an angle-bar, arranged to form a guide for a web or Webs, of an endless belt passing around Vthe bar and between the bar and the web or webs, said belt having a plurality of ribs on its operating-surface, and means for driving the belt, substantially as described.

8. 4The combination with means for forwardinga plurality of Webs,'of angle-bars for changing the direction of movement of the Webs, a pair of driven rolls, an endless belt driven by the rolls, said belt passing between the angle-bars and the webs, and a plurality of guides, said guides including suitably-arranged angle-bars for controlling the movement of the belt, substantially as described.

ln testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

OSCAR ROESEN. Witnesses:

GEO. M. BROWN, f WILLMMKOERNER.

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