US1783767A

US1783767A - Rotary web-printing press

Info

Publication number: US1783767A
Application number: US318507A
Authority: US
Inventors: Howard M Barber
Original assignee: CB Cottrell and Sons Co
Current assignee: CB Cottrell and Sons Co
Priority date: 1928-11-10
Filing date: 1928-11-10
Publication date: 1930-12-02
Anticipated expiration: 1947-12-02

Description

10, 1928 2 Sheets-Sheet H. M. BARBER ROTARY WEB PRINTING PRESS Filed Nov.

Dec. 2, 1930.

INVENTOR /WW ATTORNEYS Dec. 2, 1930.

v H. M. BARBER ROTARY WEB PRINTING PRESS Filed Nov. 1o, 1928 f 2 sheds-sen 2 NMa INVENTOR fyM//m ATTORNEYS Patented Dec. 2, 1930 i UNITED STATES PATENTFMCE,

HOWARD M. EARBER,oE rAwcATUCK, CONNECTICUT, AssIGNoR rro cjB. comfrRELL a lsoNs COMPANY, or wEsTERLY,y RHODE ISLAND, A coRroRA'rroN or DELAWARE ROTARY WEE-PRINTING rREss Application'fileaNovember 1o, .1928. serial No. 318,507.

The objectof my present invention .is to provide a rotary `web printing press which 1s especially designed for socalled bag printing.; whereby theprinted 'webwhich may be.`

ofthin or loosely woven material, as burlap, ywill vhave rthe successive printlngs thereon in one or more colors, spaced at different distances apart according to the length ofthe sheets which are to be cut from the web.

My invention comprises an impression cylinder of a predetermined diameter and Vcoacting form cylinders of larger or Vsmaller corresponding diameters, which form cylin ders I will hereinafter designate as Change form cylinders as they maybe of any deslred corresponding diameters within a reasonable range and not necessarily sub-'multiples of the diameter of the impression cylinder,t0v suit bag vblanks or sheets of different lengths; 1the change form cylinders of one diameter for one predetermined length o'i-fsheet being readily substitutedfior change form cylinders of another diameter for anotheipredetermined length of sheet, withoutrebuild- I ing the press.

My invention further comprises, in afour color rotary web printing press, Vfour change `form cylinders of Vthe same selected diameter 1 and two impression cylinders,l each adjustvable for coaction with two ofthe changejform` cylinders; means being provided for movf ing each impression.cylinderfinto positionvto.

coact with its respective changevformV cylinders and for locking V.the impression cylinders in their adjusted positions; an adjustable registering gear whichcoacts with the impression cylinders, being also provided for ensuring the synchronous action of thetwo Vimpression cylinders.

VA .practical embodiment of:my,firiventionisV represented in the in which l l ,Y Y,

Fig. lvrepresents a detail'side elevation illustrating the impression cylinders adjusted Y accompanying drawings,

for coaction with relativelylarge change -form cylinders of the same diameter. f

Fig. 2represents a similar view illustrating the impressioncylinders adjusted for co- .1, in each side-of which frame the twofimpression cylinders. 2 and 3 of thesame'de- V:'5'5

siredY diameter have their shafts 1f-and; 5

mounted in horizontally adjustable'bearings `6 and??y ,located in the same horizontal plane.V4 These impression cylinders present an unbrdlien impression surface for the traveling we v In Figure 1 four change form cylinders 8, 9 and .10, 11` of the same relatively large diameter are illustrated, two cylinders being driven from and coacting with the impressioncylinder 2 and the other two cylinders .being driven from and coacting with the 'impression cylinder 3. VIn Figure 2 'four change formy'cylinders 12, 13'and'14', 15 of the same relatively small diameter are illustrated, two;` l

cylindersbe'ing drivenv from and coaoting with Vthe `impression cylinder 2 and the other vtwo cylinders-being driven from and coacting with the impression cylinder 3.

each impressioncylinder are located in a ver-v tical plane at equal distances above and below Vthe plane of movement. oftheir coacting-im pression cylinder topermit its simultaneous coactionwith both of the form cylinders., The circumference of, each change form cylinder is herein shown as ltwice the length or the lsheet to be subsequently cut from the web.

Y Fixed bearings 16, 17 and18, 19 are providedjin each side of the main frame -or amounting either the shaft-s 20, 21 and 22, I23A of the large change, .form cylinders 8, 9 and 10, 11 shown in Fig. 1., or the shafts24, 25

12, 13 andlf, 15,'shown i1rFig-f2. i

and 2 6, 27 of the small change form cylinders The two selected changeeform cylinders-for WhileA I have shownv change form' cylinders 'f two diameters in the two figures', itis to be.

V2understoodthat thesechange fornrcylinders i may be of anyV desired diameter,lnot necessarily asub-'multiple `of thelimpression cylY inder, so thatjsuccessive printings on the web may be spaced at any'desireddistance apart, within Vreasonable limits, to suit sheets of dilferent lengths to be cut from the 'prin-ted The inking mechanisms for the change form cylinders are denoted by 28, 29 and 30, 3l, said inking mechanisms being mounted and positioned in their

respective stands

32, 33, adjustable along the base of the main frame to bring the inking mechanisms into and out of coaction with their respective change form cylinders.

The impression cylinders 2 and 3 are connected for synchronous action, through the registering gear 34 which is adjustable along a plane at right angles to the plane of movement of the impression cylinders; the shaft 35 of the registering gear being movable along alined vertical slots 36 in brackets 37 carried by the main frame, a nut 38 serving to lock the registering gear in its adjusted position.

The impression cylinder 2 is shown as moved in a horizontal plane into position to simultaneously coact with its two change form cylinders by the following means:

A hand wheel 39 has its stud shaft 40 provided with a gear connection 41, 42, 43 with a cross shaft 44 having a worm and gear connection 45, 46 at each side of the frame with a screw shaft 47 engaging the bearing 6 which is slidable along a guideway 48. A set screw 49 is arranged in position to engage the bearing 6 and lock it in its adjusted position.

The impression cylinder 3 is shown as moved inte position to 4simultaneously eoact with its twochange form cylinders by the following means:

A handle 50 has its stud shaft 5l provided with a gear connection 52, 53, 54 with a cross shaft 55 having a worm and gear connection 56, 57 at each side of the frame with a screw shaft 58 which engages the bearing 7 slidable along the guideway 59. An adjusting screw 60 is arranged in position to engage the bearing 7 and lock it in its adjusted position.

A change gear drive is provided for the impression and changeform cylinders, which change gear drive is shown in the accompanying drawings as including in each form, a change gear of the same diameter asthe selected change form cylinders. The rocking support for the change gear is denoted by 6l and it carries a stud shaft 62. This L'stud shaft serves in FiO. l as a mountino' for the change gear 63 and in Fig. 2 as a mountingfor the change gear 64. Y

The means which I have shown for rocking the supports 6l to bring the selected change gear into its driving connection with the impression cylinder gear 65 is shown as a hand wheel 66 having its cross shaft 67 connected at each side of the machine through bevel gears 68, 69 with a worm shaft 70 having a worm 7l meshing with a gear segment 72 carried by the rocking support 6l.

The web is shown as passing aroundpsuitable rollers 7 3, 74 to and around the impression cylinder 3 and from thence around a suitable roller to and around the impression cylinder 2. From thence the web passes around suitable rollers 76, 77, to the delivery point.

The drive for either the change gear 63 or the change gear 64 is shown as a gear 78 ou the shaft 79 which meshes with a gear 80 on the shaft 8l. A gear 82 on this shaft Sl meshes with a gear 83 on the stud shaft 62.

The rocking support at each side of the machine may be locked in its adjusted position by means of a bolt 84 projecting through an elongated slot 85; a locking nut 86 being provided for said bolt.

In the accompanying drawings the web is printed in four colors and is shown as passing around both of the impression cylinders 2 and 3 to be printed upon by the four change form cylinders. However, it will be seen that the web may be printed in two colors only by passing it around either the impression cylinder 2 or the impression cylinder 3 to be printed upon by the change form cylinders coaeting with the selected impression cylinder.

It is to be understood that when the form cylinders of one diameter are changed for form cylinders of another diameter, the gears which drive the impression cylinders and through them the form cylinders, are also correspondingly changed.

It is evident that various changes may be resorted to in the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention, hence I do not intend to be limited to the particular embodiment herein shown and described, `but what I claim is:

l. In a multi-color rotary web printing press, two impression cylinders, each adjustable for coaction with change form cylinders of the same diameter selected from change form cylinders of different corresponding diameters, means for moving the impression cylinders in opposite directions into positions to eoact with their respective selected change form cylinders and adjustable means connecting the impresion cylinders for synchronous action.

2. `In a multi-,color rotary web printing press,.two impression cylinders, each adjustable for coaction with change form cylinders of the same diameter selected from change form cylinders of different corresponding diameters, means for moving the impression cylinders in opposite directions linto positions tocoact with their respective selected change form cylinders, impression cylinder gears, and an adjustable registering gear engaging both impression cylinder gears.

`impression cylinder into position-toV coact..

with its selected change form cylinders and adjustable means connecting the impression cylinders for synchronous action.

5. In a four color rotary web printing press, two impression cylinders, each adjust able for coaction with two change form cylinders of the, same diameter selected from change form cylinders of different corresponding diameters, means for moving each impression cylinder into position to coact.

with its selected change form cylinders, impression cylinder gears, and an adjustable. registering gear engaging both impression cylinder gears.

6. In a four color rotary web printing press, two impression cylinders, eachfadjustable for coaction with twochange formr cylvinders of the same diameter selected from change form cylinders l ofV different corre-V sponding diameters, means for moving each Y impression cylinder into position-to coact with its selected change form cylinders,

means for locking the impression vcylinders in their adjusted positions, impression cylinder gears, and anadjustable registering gear engaging both impression cylinder gears.v

' 7. In a four able for vcoaction with two changer form cyl- Vinders of the same diameterselected from change .form cylinders of different correspondingV diameters, jeach two selected change form cylinders of different corresponding diameters, each two Vselected change form cylinders being located in a vertical plane at equal distances above and below the horizontal plane passing through the axis of rotation of their impression cyl- Y inder, means for moving each impression cylmder along said horizontal plane into position to coact with its selected change form Y cylinders, impression cylinder gears,

and a vertically adjustable registering gear engaging both impression cylinder gears.

In testimony, that I claim the foregoing as my inventiomI have signed my name this 8th `day of November, 1928. Y HOWARD M. BARBER.

vcolorlrotary web printing v press,'two impression cylinders, each adjustchange form cylinders beinglocated at equal distances on both sidesl of aplan'e 'Y passing'through the .axis of rotationoftheir impression. cylinder, means for moving.f each impression Cylinder; @1011s Said plane into position to coact withlits selected change Vform cylinders, impression cylinder gears, and a registering gear 'engagingbothimpression .cylinderV gearsand adjustable along a plane at vright'angles to the movement of j.

theV impressionl cylinders. f

8. In, a four color'rotary web printingV press, two impression-cylinders mounted in Y.mi

the same horizontal planegand each adjustable for coaction with two change form. cyl'- inders of the same diameter selected from."

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